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mineral processing, equipment manufacturers, ball mills, flotation, thickener - xinhai

mineral processing, equipment manufacturers, ball mills, flotation, thickener - xinhai

The new grooved annular liner increases the ball ore contact surface, strengthens the grinding effect, and has the ability to lift the ore, reducing energy consumption; the large double-row spherical roller bearing design can reduce the friction.

An air inflation mechanical agitation floatation cell with slurry suction, which is featured with strong agitation force, good air spreading effect, uniform mixing of slurry and air, less sedimentary of tailings, low turnaround speed and low power consumption.

This thickener is a new type thickening equipment independently developed by Xinhai. The thickener is equipped with additional deaerating tank, which can eliminate the solid particles attaching to the bubbles.

A double stages slurry pump with head of 70m. It is lined with high wear-resisting rubber, whose abrasion resistance index is up to 128%. Double Stages Slurry Pump is a rare rubber slurry pump with integrated effects of wear-resisting, anticorrosion and high head.

The Mongolia 1,000t/d gold mineral processing plant was an EPC+M+O project. Xinhai worked to achieve high recovery of gold and other valuable minerals by cutting costs and maximizing benefits and attach great importance to workers safety, environmental protection and energy conservation.

Mexico 1500t/d copper lead zinc gold and silver polymetallic ore dressing project is a mining industry chain service (EPC + M + O) project undertaken by xinhai, which is solely undertaken by xinhai from design and research, manufacturing and procurement of complete sets of equipment, commissioning and delivery to mine management and operation.

The Guinea 6,000t/d gold mineral processing plant was an EPC+M+O project. The design scope covered construction drawings and workshop drawings and involved engineers in the fields of mineral processing, water supply and drainage, power, civil engineering and general layout.

The Malaysia 700t/d gold mineral processing plant was a symbol of Chine-Malaysia cooperation in the mining industry under the policy of The Belt and Road. The raw ore consisted of pyrite, quartz, calcite and mica, with gold being the valuable mineral. It had a gold grade of 4.70g/t, silver grade of 4.63g/t, iron grade of 20.10% and a sulfur grade of 20.55%.

equipment manufacture, mine equipment manufacture, mine equipment manufacturer - xinhai

equipment manufacture, mine equipment manufacture, mine equipment manufacturer - xinhai

Aiming at mining and mineral processing equipment manufacturing and procurement, Xinhai Mining has established a complete and strict quality management system, procurement and supplier management system to ensure production and procurement in strict accordance with the quality manual.

Mechanical Design Institute undertakes equipment research and development, design, improvement, etc. The technicians provide required equipment according to the equipment requirements put forward by Mineral Processing Research Institute and Mine Design and Research Institute, which makes the clients enjoy the seamless connection turn-key service including "mineral processing test, mineral processing technology, equipment selection, mine design and equipment manufacturing".

All outside metal materials should be first treated by sand blasting and then by coating if they are to be processed in the factory. Over 20 laser, plasma and flame cutting equipment and over 10 automatic welding equipment stand in the manufacturing base. All exported equipment is coated with marine paint for long-time shipment.

For developed countries such as Australia, Canada, the United States, South America and high-demand clients, Xinhai will provide the matched accessories such as motor, reducer, bearing and electrical components of internationally renowned brands, for example: The motor adopts ABB or SIEMENS brand; the reducer adopts SEW or Sumitomo brand; the bearing adopts SKF or Timken brand; and the electrical components adopt Schneider, ABB or SIEMENS brand.

Equipment manufacture is in the charge of Xinhai mine production plants that covers an area of 100 mu, and are divided into 3 production plants. It could manufacture more than 600 kinds of equipment of mining, ore dressing and metallurgy, and could provide full sets of main and auxiliary equipment for mine less than 10000 tons / day capacity. Xinhai company passed the ISO9001:2000 international quality management system certification, and has formed a complete and strict quality management system in equipment manufacture, its operation is in strict accordance with the requirements of the quality manual.

Xinhai takes sole responsibility of all problems of dressing plant construction in EPC. Xinhai could select some main equipment basing on rich experience, so the mine design is in step with equipment manufacture, which greatly shortens the construction period, and saves time and cost for customers. In order to strictly control the period, Xinhai will formulate detailed and feasible project schedule in EPC, and project control group strictly supervise the progress of project.

Xinhai has built mature and perfect procurement and supply management system, and established long-term cooperative relationship with excellent suppliers who are influential in the industry. Xinhai can purchase the equipment and supplies required by mine construction and mineral processing operation for clients, which includes but not limited to mining equipment, excavators, loaders, bulldozers, dump trucks, drilling machinery, mineral processing equipment, water pumps, blowers, cranes, hoists, mine supporting materials, installation & maintenance tools, test & chemical laboratory equipment, spare parts, plant consumables, modular housings, steel structure workshops, etc.

To improve procurement efficiency, reduce procurement cost and guarantee procurement quality, Xinhai applies two levels of procurement mode which is centralized procurement by headquarters, auxiliary procurement by project management department, and constructs perfect procurement and supply management institution system, which mainly includes Purchase Management Regulations of Equipment and Materials, Management Method of Circulating Materials and Low-valued Consumables, and Management Regulations of Warehouse for Equipment Spare Parts. Besides, Xinhai establishes information platform of procurement business for communication, and operations of procurement plan reporting and approval, warehouse entry inspection, general ledger management and supplier management can be carried out in a unified and coordinated way at the platform, which is convenient for the real time monitoring to the procurement work.

Xinhai can also provide the customers with all kinds of equipment and spare parts needed in the mining production. If the part of the materials needed in mining production cannot be provided locally in the mining area, Xinhai can assist the customer to purchase the relevant materials.

In equipment manufacture, Xinhai takes advantages of a great deal of mining and ore dressing technicians to develop and improve 80% mining, dressing and smelting equipment by combining craft with machine manufacture. Some products reach the international leading level with own characteristic. In the equipment processing, Xinhai production factory owns more than 100 sets of general machinery processing equipment for example vehicles, milling, planing, grinding, boring, drilling, punching, welding, bending, shearing and so on, and independently developed mill processing equipment machine. The largest gyration diameter of machine tool is up to 6 meters.

morenci copper mine, arizona - mining technology | mining news and views updated daily

morenci copper mine, arizona - mining technology | mining news and views updated daily

The Detroit Copper Company started mining at Morenci, 16km south of Silver City, Arizona, in 1872. Copper Queen Consolidated Mining bought the property in 1885, with the company name changed to Phelps Dodge in 1917.

Ninety years later in March 2007, Phelps Dodge merged with Freeport McMoRan Copper & Gold, whose principal asset is the massive Grasberg copper-gold mine in Indonesia, in an agreed $25.9bn takeover by Freeport, the smaller of the two companies.

Morenci is the largest copper producer in North America and remains a major contributor to Phelpss copper output, which is second only to that of Chiles Codelco. In 1986, Phelps Dodge Morenci was established as a partnership between Phelps Dodge Mining Company (72%) and Sumitomo Metal Mining Arizona Inc. The latter belongs to Sumitomo Corp. (15%) and Sumitomo Metal Mining (13%).

For many years as an integrated mine-concentrator-smelter operation, Morenci pioneered the large-scale hydrometallurgical treatment of mined copper ore by dump leaching, solvent extraction (SX) and electrowinning (EW) during 1985, in parallel with conventional treatment.

In 1999, Phelps Dodge started a $220m mine-for-leach (MFL) conversion project, and from mid-2001 until 2006 produced all its copper this way. However, in 2005, the company announced the go-ahead for a $210m project to create the worlds first commercial copper-concentrate leaching / direct electrowinning operation at Morenci, a proprietary technology that allows primary sulphide ore treatment by leaching in combination with secondary ore processing.

As well as new leach-electrowin capacity, the project required reopening the mothballed Morenci concentrator. This programme was accelerated in 2006 to provide copper-in-concentrate for treatment at Phelpss Miami smelter, also in Arizona, before completion of the hydrometallurgical facilities at Morenci.

A feasibility study was conducted for an expansion project to raise the current milling rate from 50,000tpd to 115,000tpd. The Morenci mill expansion project began operations in in May 2014 and achieved full milling rates in the second quarter of 2015.

Copper mineralisation, identified by a regiment of California Volunteers in 1865, turned out to be part of a major porphyry copper ore body extending across a dissected mountain terrain. Both sulphide and oxide ores occur, pyrite and chalcocite being the main sulphide minerals, and chrysocolla and malachite the predominant oxides. Molybdenite, galena and sphalerite are also present.

Phelps mined underground until the 1930s depression, converting to an open-cut operation with rail haulage in 1937. The topography prevented development as a single pit: today the working area extends across 2.5km x 2.2km but is worked as three pits: the Metcalf (within the original Morenci pit), the NWX (Northwest Extension) and the Coronado.

Electric rotary rigs, mainly made by Bucyrus, drill blast holes and P&H 4100 and 2800 series electric rope shovels load the truck fleet. This includes more than 60 Caterpillar units, both 793 (218t capacity) and 797 (272t) models.

When hydrometallurgical processing started, these two mills worked in parallel with two leaching / solvent extraction operations and one electrowinning tankhouse. The MFL conversion required an expansion of the hydrometallurgical facilities to yield 365,000t/y of cathode copper, but led to the Metcalf concentrator being closed and the Morenci unit placed on care-and-maintenance until 2006.

While high-graded ore is conveyed to leach pads within the pit, the bulk of the primary crusher output (63,500t/d of ore) is secondary crushed and conveyed to the Stargo dump-leaching site. This ore is agglomerated for spreading by two Rahco mobile stacking units. Leaching is bacterially assisted, with air blown into alternate lifts.

The total heap and dump leach-liquor yield is 16,500m/h, copper recovery was 58.5% in 2003. Four SX plants, namely Central, Metcalfe, Stargo and Modoc, feed three tankhouses (Central, Southside and Stargo). The new leaching-electrowinning capacity was incorporated into the existing complex, which is already the worlds largest.

mining industry | market-specific solutions | siemens global

mining industry | market-specific solutions | siemens global

As a trusted mining partner,SIMINE solutionshelp customers to meet their challenges and thereby enable to set new benchmarks within the mining industry. To boost efficiency and reduce costs, we rely on our solutions for mine hoists, bulk material handling, gearless and conventional mills as well as mining-specific automation and power solutions.SIMINE solutions additionally offer solutions for the digitalization of your plants, machinery and processes which optimize operations and ensure consistent, end-to-end data management.

Competitiveness is mainly based on productivity and operational excellence. Modern technology offers new possibilities. The intelligent use of process data can help improve asset utilization, logistics, and maintenance, contributing to reaching an overall operational excellence.

Our SIMINE portfolio for continual mining extraction in open-cast mining ensures safe and reliable operations, while increasing productivity outputs and reducing the overall cost per ton extracted.

Our SIMINE bulk material handling solutions help you cover long distances and, simultaneously, increase your transported load and process speed while also saving energy and money along with providing a high level of safety.

Our gearless and pinion mill drives redefine operational reliability, availability, maintenance costs, and energy efficiency. In addition, we offer intelligent solutions such as condition monitoring for highest availability.

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learn more about swedens mining industry | miningforgenerations

learn more about swedens mining industry | miningforgenerations

The Swedish government has a clear goal to strengthen its position as the EUs leading mining countrythis has been expressed in Swedens mineral strategy. Along with the goal of increased ore production comes a heightened need for sustainable operating methods, as well as a need for sustainable and attractive communities to be built in the areas around the mines.

Global social development requires access to metals and minerals. We think it is wise to extract these from a place where strict safety and sustainability requirements exist, says Per Ahl, vice president for the Swedish industry organization, Svemin.

Sweden is Europes leading mining nation as it accounts for 91% of the continents iron ore, as well as 9% of the copper and 24-39% of its lead, zinc, silver and gold. In 2014, Swedish ore production broke a new record for the fifth year in a row; the increase was 2% from the previous year, and production amounted to about 89.1 million tons. Today, Sweden has 16active mines, of which 13 are metal mines.

The mining and mineral industry has been of great importance to Swedens prosperity for quite some time. In 2013, the mining industry contributed about 11.4 billion euros to Swedens GDP, which is equivalent to about 3%. Annual investments amount to about SEK 1.1 billion, which is a significant portion of all industry investments. In addition, the industry provides 13,000 jobs and directly contributes to creating an additional 35,000 opportunities for work. The industry consists of a large mining cluster made up of large and small companies, many of which act as subcontractors to the direct mining industry.

A sustainable mining industry creates positive conditions for future growth. Besides the existing mines, there are currently multiple projects that have been granted mining concession and are awaiting environmental approval.

The far-reaching success of Swedish mining is largely thanks to the fact that we combine specialized academia with an industry driven by innovation. Cooperation across borders makes it possible to establish and operate profitable plants despite high salaries and relatively low mineral levels, says Per Ahl.

A close partnership between academia and industry allows Swedish mining to act as a testing ground for the development of new and eco-friendly products and processes, which can then be adapted for other countries. This has led to Sweden now being a leader in mining equipment manufacturing. Swedish engineering companies account for 60% of all underground equipment.

Sweden has highly developed legislation for environmental and worker safety. A sustainable production processfrom mine to finished metalis guaranteed through the use of energy-efficient methods which deliver refined products to the customer, reducing overall environmental impact. Sweden is also highly focused on recycling. For example, Rnnskr is one of the worlds largest recycling facilities for electronics. The next challenge is ensuring sustainable management of mining waste.

By 2025, Sweden will triple its mining production, which should provide more than 50,000 new jobs. The Swedish government has formulated Swedens mineral strategy with the aim of ensuring long-term sustainable growth while taking ecological, social, and cultural aspects into consideration. The overall goal is clear: Sweden will maintain and strengthen its position as the EUs leading mining nation.

nordic mining equipment & technology | e & mj

nordic mining equipment & technology | e & mj

Annually, E&MJ offers a roundup of activities among suppliers from the Nordic region. Several major mining and mineral processing equipment manufacturers (OEMs), as well as emerging small- and medium-size suppliers, are headquartered in the region. The surrounding hard rock mines that lie at or above the Arctic Circle often serve as the proving grounds.

Mining in the Nordic region dates back three centuries and its an important part of their culture. Using the experience they have gained, they have developed or continue to upgrade equipment and technology. For many of them, placing their equipment in the mines and mills is the first step. Letting the explorers, miners and mill superintendents test the gear is an achievement. If they earn that Nordic stamp of approval, they know their equipment will work anywhere.

What follows is a digest of equipment and service-related concepts from the Nordic region. Most of it was brought to E&MJs attention by readers in the region. While the major original equipment manufacturers (OEMs) want to maintain their position as industry leaders, the small- and medium-sized companies hope to export their services to other major mining districts around the world.

SANDVIK DISCUSSES DEVELOPMENTS IN AUTOMATIONAutomation has become a buzzword for the mining businessnot just on the surface, but also undergroundand Sandvik Mining is in tune with that. The awareness and interest for more productive and safer equipment has clearly increased over the past few years, said Riku Pulli, vice president of automation for Sandvik Mining. He believes that awareness has been heightened by more and more successful reference cases as well as the clear link to the current challenging market where mines have been forced to find new and more cost-effective ways to extract ore.

Overall, industrial digitalization can also be clearly seen in mining, Pulli explained. Mining companies are looking for ways to make the entire process more continuous including real time control and overall transparency of operations, Pulli said. With todays technology, such as mine-wide digital communications, robust sensor technology and industrial computing capacity, many of the past bottlenecks can now be removed. Along this process, the amount of generated and stored data is now growing exponentially and this will soon lead to further exciting opportunities.

Sandvik launched automated long hole drilling more than20 years ago. In 2004, the company developed semiautomated LHDs delivering the first systems to El Teniente in Chile and Pyhsalmi in Finland. Sandvik worked with DeBeers to launcha fully autonomous underground trucking system at the Finsch diamond mine in South Africa in 2006. A similar system was installed at the Williams gold mine in Canada in 2008. Several other successful load-and-haul (L&H) automation systemsfollowed including Northparkes in Australia, Kiruna and Garpenberg in Sweden, Kidd in Canada and just recently Tara mines in Ireland.

One of the new features Sandvik has included in the AutoMine Loading product is the automatic bucket filling technology, which makes the LHD operating cycle fully autonomous when a computer also knows how the bucket is loaded quickly and efficiently. All the other parts of the cycle, including tramming, tipping and traffic management were previously automated.

In the past few years, theres been a strong focus on expanding the automation platform to surface drilling applications. Sandvik now has a comprehensive automation package for single rigs or large fleets ranging from smaller DP-series top hammer drills to the large DR-series rotary drills, Pulli said. The new product allows fully autonomous operation and supervision from a distance. The control center can be mounted in a mobile trailer or a van or it can be located in a mines control room further away from the bench.

Sandvik has been working intensively on advancing automation for underground drilling. The new DD422i development jumbo is a prime example. The DD422i has plenty of automation built into it, including automated face drilling, data transfer, supporting office software, etc., Pulli said. This is now the platform the other underground drills will share in the short term, including long-hole drills and bolters. These units can also be remotely operated from a control room using the AutoMine platform.

As Sandvik has traveled along this 20-plus-year path developing more and more automated equipment, it quickly realized the importance of creating an overarching information management system that integrates equipment and interfaces with other aspects of the mining process. Sandviks offering now includes a modular and fully integrated information management system that allows customers to:

The potential upside from automation has been well documented. Improved operating safety is an obvious benefit, especially when miners are removed from hazardous working conditions. In addition to safety, many Sandvik customers have reported significant increase in equipment utilization and reduced operating costs when using automation, Pulli explained. At the last Austmine conference, Northparkes reported a 23% increase in daily production when using AutoMine loaders, with 24% lower operating costs, Pulli said. Finsch has also seen a 26% increase in productivity by having truck availability out 14% and utilization 24% higher compared to manual operation. Kidd also reported significant productivity gains right after implementing AutoMine Loading Lite with more tons being remotely loaded during shift changes and blast windows.

Sandvik has worked already with many customers to address this question successfully and they can now choose a step-by-step approach where they can start with more basic automation and gradually bring in more when the time is right.

Modern mines are becoming rock factories where the process has become continuous and it can be monitored and controlled in real time. Its incredibly exciting to see that the visions of automation that have been discussed over and over again in the past two to three decades are now becoming a reality, and this is still just the beginning, Pulli said.

MECHANIZED SLOT DRILLINGThe San Geronimo underground copper mine, located in Chile, was facing the same challenge as many underground minesthe ability to efficiently create open slots in a safe manner. The slots provide a free face (or void) for fragmentation in production blasting. The mine approached Wassara, knowing that, when it comes to drilling a long-hole rise, the companys down-the-hole (DTH) hammers drill straight holes efficiently and impart less stress on the host rock.

Previously, the staff at San Geronimo used the traditional air leg raise miner for the opening slots. A miner worked his way up the hole on ladders and drilled and blasted, cut by cut. This method was not very productive and posed a great hazard for the raise miner. To create one open slot with the dimension of roughly 1.2 m x 1.2 m and 20 m in length with this method, it took three to four miners roughly 28 days. In a search for alternatives to drilling the open slots, the use of a box-hole rig was quickly eliminated due to the high cost and requirement of large development drives.

The ideal solution would create open slots with existing equipment and technologies in the production, like the drill rigs used for the long blast holes. This has been tried by many mines, but with unsuccessful results as the requirements of very straight holes couldnt be met. In a long-hole rise, the holes are positioned very close to each other, sometimes as close as 20 cm. In these 20-m-long holes, it equals 1% of borehole deviation.

With the very tight spacing between the holes in a long-hole rise, it is important that the drilling process doesnt create or prolong existing structures and voids in the host rock. If this happens, the blast holes might get connected to each other with explosives during the charging process. If so, undesired initiation of the explosives will happen during the blasting sequence oftentimes leading to poor fragmentation. With conventional drilling technologies, it is very hard to keep the holes parallel, which is the key to achieve an successful blast of the long hole rise.

Wassaras water-powered DTH hammer enables very straight holes with less than 1% deviation in traditional lengths of long hole rises. The successful reference from the LKAB mines in Sweden, where the Wassara hammer is being used for long hole rises up to 35 m in length, made the choice easy for the mine.

The drill pattern of the long hole rise consisted of 82-mm (3.25-in.) blast holes and 127-mm (5-in.) open void holes. The length of the long hole rises varies around 20 m and is 90 upward and has about 70 side rotation.

The Wassara W70 hammer is used for the 82-mm holes, while the Wassara W100 hammer is used for drilling the 127-mm holes. It takes three to five days to complete one long hole rise with Wassara. Comparing it to the method they used before, that is a factor of four to five times as fast, and more importantly it eliminates the hazards that comes with air leg raise mining.

They surveyed the drill holes to measure the deviation, using the Reflex system as surveying method. All holes had less than 1% deviation while many of them had close to zero. To date, the mine has drilled 10 long hole rises and they require about two long hole rises per month to meet production requirements. The rate of penetration in this formation was 0.8 m/min with the W100 hammer and 1 m/min with the W70 hammer.

CONCRETE SPRAYING MACHINESFinnish underground equipment supplier Normet introduced its new concrete sprayer at a mining exhibition in Tampere, Finland, earlier this year. The Spraymec 5070 VC was designed for medium capacity spraying work, and can be considered the little brother of Spraymec 8100 VC as it uses the same high performance carrier but comes with somewhat lower capacity spraying features.

New features include a new spraying boom SB307 providing adequate reach in tunnels with profiles up to 7 m. The boom is equipped with self-lubricating slide pieces and roller to minimize wear and tear. All the boom movements are pressure compensated and have proportional functions allowing the operator to create a smooth and homogeneous tunnel lining structure.

The Spraymec 5070 VC uses Normets low pulsation concrete spraying pump (NSP30) with a theoretical concrete output of 28 m3/h. An onboard screw compressor provides a reliable air supply for medium capacity spraying jobs.

The same intuitive nozzlemans interface is available for the Spraymec 5070 as is standard for the Spraymec 8100. This includes the operator being able to carry out all spraying functions from the radio remote control and follow spraying process parameters though a turntable and movable multicolored display placed on the front of the machine. Service convenience is assured with open access to all service points.

The Norsmart control system can log all spraying process and carrier data such as concrete and accelerator volume, dosing percentage, pumping speed, change of process parameters, engine and compressor hours, hydraulic oil system pressure and temperatures etc. The NorSmart system also provides full fault diagnostics.

FLOWROX WINS VALVE PROJECT IN NAMIBIA Flowrox recently won a project to supply the Husab uranium mine in Namibia with 83 550-mm hydraulically actuated pinch valves. They will be used for the mines tailings operation that will span more than 23 km2. The valves will be operated by means of two mobile gasoline-powered hydraulic power packs whenever required.

In addition to the valves themselves, Flowrox has conducted competence training for the mines technical staff, ensuring a high level of sustainable plant operability. A healthy amount spare parts will enable mine staff to carry out any service and repairs if and when required.

Husab only partners with the premium product suppliers in this market sector and Flowrox was chosen due to our quality performance, said Henlo Blignaut, who was appointed managing director, Flowrox Pty Ltd. South Africa in June. He sees the situation in Southern Africa as challenging, but he is confident about future prospects.

Two Finnish manufacturers, Doofor and Avant Tecno Oy, are bringing new rock drilling solutions to the world market. The Avant D22x drill attachment can be installed for Avant 635, 640 and 700-series compact loaders and it can drill up to 45-mm-diameter holes in hard rock. The D22x drill attachment includes Avant quick-attach system and hydraulic multiconnector for a quick installation. The drifter is a Doofor DF530X hydraulic rock drill, which has a 7/8-in. hexagonal female chuck and can use both air and water as drill hole flushing media. The complete attachment weighs 205 kg and it is equipped with a hydraulic 90 tilt to vertical drilling. We see a lot of potential for this kind of compact, robust, but effective drill attachment, said Avant Tecnos Jukka Kytmki. There are a number of existing Avant-users in need of such an attachment. This also makes the Avant-loaders yet more versatile, which adds to the number of future Avant owners.

Doofor also recently introduced the DF540L-BLT, a bolting and grouting rock drill in the 14-kW size class. The rock drill has been designed symmetrically to give miners and rig developers as much free space for design as possible. With no top or bottom, the unit is completely flappable. The DF540L-BLT is also quite short in relation to its power.

The DF540L-BLT offers double sealing for grouting purposes. The seals are also accessible and easy to maintain. The flushing chamber is also placed so that the water doesnt enter the rock drill even in an unlikely case of seal failure. The rock drill has an oversize and very robust rotation gear, which it shares with the bigger Doofor rock drill models DF560L and DF550L. The rock drill design is simplified to reduce maintenance costs by lowering the number of pressure seals.

Jama Mining Machines, which is based in Skelleftehamn, Sweden, recently received its first export order to Finland for mining rigs in the Jama 8000-series. Europes largest gold mine, the Agnico Eagle Kittil mine in northern Finland, purchased a mechanical scaler and a shotcrete rig from Jama.

The Jama machines are leaders in their niche. When Jama also could present a trustworthy concept for service and support, we became confident to choose them as our supplier, said Kysti Huttu, chief mining engineer at Kittila, who has been responsible for the technical aspect of the purchase agreement.

We see this as a breakthrough in Finland since the Kittila mine is regarded as Finlands most modern mine and is considered as a role model and trendsetter for the countrys other mines, said Anders Norberg, business development manager and responsible for export sales at Jama Mining Machines.

At the end of last year, Jama launched the latest version of its 8000-series machines, the 8000B. It has a Deutz diesel engine that meets emission class Tier 4 final, which reduces emissions to an absolute minimum. It also has a new PLC control system integrated into a 15-in. touch-screen monitor. The operator interface is user friendly. The system has a redundant CAN-bus technology, Ethernet communication and a simplified troubleshooting tool.

In March, Jama added rescue chambers and lifts, and various utility vehicles to its product portfolio when its parent company, Hgkammen, acquired Bergteamet AB. The products in Bergteamet division-MEC were placed under Jama Mining Machines. In addition, Jama is also now selling a Wheel Carrier system, which had been marketed under Hgkammens Komab Industriteknik subsidiary.

Founded in Sweden in 1940 for produce equipment for the Swedish navy, Grindex is a company with extensive experience in the engineering field. It has now evolved into one of the global leaders in submersible dewatering pumps. In 1960, the company developed the first dewatering pumps able to run dry with a revolutionary air valve. Since then, the products have changed to reflect customer demand, but Grindex has maintained a strong focus on quality.

More recently, Grindex introduced the Primo range suitable for tough dewatering applications. The pumps are often found working in media containing chemicals or in otherwise contaminated environments. Because of the affordable price, it can be advantageous to fit a new one and dispose of the old unit in an environmentally responsible manner.

OUTOTEC INAUGURATES DEWATERING TECHNOLOGY CENTEROutotec recently established a Dewatering Technology Center in Lappeenranta, Finland is dedicated to developing new products, processes and services for solid-liquid separation, and raw material reuse. With the new Dewatering Technology Center, Outotec can simulate and optimize customer processes to integrate them with Outotec technology to capture new levels of efficiency throughout the life cycle of a plant.

With the recent acquisition of Kovit Engineering and Outotecs expansion into tailings management solutions, the new dewatering technology center brings world-class knowledge in the study of tailings dewatering and treatment. Cooperation with our research partner Lappeenranta University of Technology further supports us in developing more efficient and sustainable total solutions for our customers globally, said Kalle Hrkki, head of Outotecs Minerals Processing business area.

PROVIDING POWER IN KAZAKHSTANFinlands Wrtsil will supply a 40-megawatt (MW) Smart Power Generation power plant for LLP KazAzot in Kazakhstan. The company, located near Aktau, produces anhydrous fertilizer and ammonium nitrate. The power plant will provide electricity and steam for process and it is scheduled to be operational in late 2016.

Also, Wrtsils capability to extend the scope of supply to include both the steam cogeneration plant and the civil materials were important factors influencing our choice, said Kinis Urakov, CEO of LLP KazAzot.

The extended equipment delivery includes four Wrtsil 34SG engines running on natural gas, cogeneration units for steam generation, mechanical and electrical accessories balance of plant, as well as civil materials supply.

The AisaKESTREL push-brooming sensor systems integrate the experienced gained in SPECIMs 20 years of airborne hyperspectral remote sensing. When it comes to detecting vegetation, water or soil attributes of minute spectral differences, there are simply no alternatives in the market compared to the radiometrically and spectrally stable data and high signal-to-noise ratio, as provided by AisaKESTREL in variable real world remote sensing conditions. You may find lighter sensors than 5 kg, but not without serious compromises in the data quality, said Petri Nygren, sales manager for Airborne Systems at SPECIM. Landsat started spectral remote sensing with GSDs at the 100-m level. Aircraft mounted AISA sensors brought GSDs to 0.5- to 1-m level. Now for UAVs, we have broken even that GSD barrier down to a 5- to 10-cm level, first time with professional data quality. While 5- to 10-cm GSD is the norm with other airborne sensor technologies, such orthophoto cameras and LiDARs, hyperspectral data is perfectly complementary in a multitude of ways. This marks a completely new era for creating added value through remote sensing.

Based in Oulu, Finland, SPECIM Spectral Imaging Ltd. is a world leading manufacturer of hyperspectral imaging instruments and systems. In addition to AISA airborne remote sensing systems, the company provides ImSpector Imaging Spectrographs, Spectral Cameras and Hyperspectral Imaging Solutions.

The Boxray 24 has a carousel with 24 measurement cells. Each stream has its own measurement cell eliminating the risk of cross-contamination of samples. Flushing the cells between measurements is made while an other cell is being analyzed, allowing shortest possible cycle times. The secondary sampling tanks are fully automated. Daily samples are collected in tea pots, which are drained in the sampler tank standvery convenient for the lab personnel as the samples will only be slightly humid when they are collected, which saves time when drying the samples in the lab.

It has three measurement cells mounted on a linear guide. Two cells are for samples and the third holds a reference briquette. A multiplexer system is then used to allow up to 16 samples. The analyzer automatically changes between the two measurement cells. As one cell is being analyzed the other one is flushed and filled with the next sample. The Boxray Compact has the same automated collecting of daily samples in the secondary sampling/multiplexing tanks as the Boxray 24, with drained pots.

Using the Boxray Compact to monitor copper content in electrolyte is an economic way of achieving full control over a tank house. The data from the analyzer can be displayed in the control room or retrieved automatically to the plant control system and thereby creating a fully automated process. The operators will at the same time be able to monitor content of precious metals or contaminants from the ore.

Earlier this year, JLT announced a significant technology leap for its products by upgrading their wireless connectivity, giving miners immediate access to the best wireless WAN, LAN and Bluetooth performance, according to the company.

Wireless connectivity is now arguably the primary method of communication, particularly for mobile computers. By investing in upgrading its existing product portfolio, JLT is leading the way in making rugged computing more accessible and reliable for all mobile users. Using wireless technologies in harsh environments can present end-customers with unique challenges; JLT Mobile Computers expertise in developing robust and reliable equipment for use in exactly these environments makes it a leading solutions provider in its field. Ensuring a reliable wireless connection in working environments where most technologies would be rendered useless requires a sophisticated connectivity solution leveraging the latest technology.

Today, mining conveyor OEMs are building even larger, more complex conveyors that combine greater strength and capacity for increased productivity. Mine operators are demanding braking systems that are more intelligent, quicker and more user-friendly.

Denmarks Svendborg Brakes introduced the first generation of the Soft Braking Option (SOBO) controller in 1998. It provided smooth, controlled braking on mining conveyors around the world. Over the years, pulse width modulation (PWM), pulse frequency modulation (PFM), and a combination of both methods of the SOBO controller were introduced. These models provided improved control for low-torque/low-volume hydraulic brakes and reduced oil flow, an important feature to achieve long controlled braking in case of power failure.

In February, Svendborg Brakes debuted the new SOBO iQ at the Society of Mining Engineers annual conference. It represents the latest technology in braking, which includes brakes, hydraulics and the SOBO iQ controller.

The first version of SOBO was basically a black box that the customer didnt have to think about, said Soren Holm, Svendborg area sales manager for Chile and Peru. But today, mine operators need and want to know whats going on in every area of their facility. The SOBO Q empowers mine operators as it provides all conveyor braking data online for easy access.

The system controls braking torque based on preset speed ramps and actual speed and system pressure feedback. Different braking profiles are provided for different scenarios. Advanced functions including independent overspeed monitoring, rollback and gear monitoring are integrated into the control box.

The System Functions Similar to a VFD SOBO iQ features a revolutionary dual-loop PI control (pressure/speed) and an internal pressure control loop. Pressure control is not only based on speed but also on deceleration. The control provides only the torque needed for a safe, controlled stop. Units have three-state digital modulationnever used in a braking system before. Each controller can accommodate up to 4 HPUs with defined torque sharing. Other features include full BUS-based communication with the master control system. Remote access and touchscreen for setup and monitoring are also available.

The SOBO iQ controller offers customers enhanced functional flexibility, according to Robin Schmidt, Svenborg application specialist for North America. It can be used as a backstop, a dynamic brake and a parking brake all incorporated in the same system. Users can get signal feedback for all the braking system functions. The control utilizes different communication ties plus different communication protocols. Users can easily access and change the parameters inside the control, such as defining a parking sequence or pre-setting a stop time.

Jan Mikyska, a Svendborg engineer who helped develop the SOBO iQ, explained, Control flexibility also means we can stop the conveyorno matter if its fully loaded or emptyin the same time or distance, depending on what the customer needs. We simply add S curves with specific desired braking profiles.

For example, when you want to stop your truck, you apply hard pressure to the brake pedal, he said. When the truck is almost stopped, you begin lifting your foot. We can apply the same kind of curve to the SOBO system. So when the conveyor is almost stopped, less braking force is used. Or, a two-stage mode can be inserted to put the same pressure onto the stops. It depends on the situation, whether its a normal stop or an emergency, but in all cases the conveyor can be stopped in a smooth, controlled fashion.

The SOBO system is also capable of providing additional dynamic braking functionality. For example, in a situation where the motor VFD loses control of the conveyor due to material overload, causing the conveyor to accelerate beyond its normal running speed, the SOBO can be set up to send an over speed alarm to the main PLC. The main PLC then decides whether a full SOBO stopping ramp should be initiated or if it is preferred to just bring the conveyor speed back to normal running speed again (in this case, the brakes will be programmed to automatically release when normal speed is reached and let the conveyor continue to run).

Svenborg recently supplied a complete braking systems for use on a series of three downhill in-line conveyors at a large copper mine in Chile. Two of the conveyors are 1,600 m long and another is 700 m long. The copper mines conveyors can transport 5,000 metric tons per hour (mt/hr) with a belt speed of 5.5 m/s. The braking systems provide emergency stopping and parking functions. Each conveyor braking system consists of two model BSFH 520 caliper disc brakes, a SOBO controller, a hydraulic power unit and disc.

The spring-applied, hydraulically-released BSFH 520 brakes act on a 1.6 m diameter disc mounted on the low-speed side of the drive shaft. The brake system provides up to 182,160 Nm nominal braking torque to stop the conveyor in a controlled manner over a 50-second time period.

The three SOBO controllers allow the mine to give a brake command to each conveyor brake system at the same time, or they can program a delay if desired. In this case, they give the same brake command at the same time for the three conveyors. The brake control can be set up with three to four different stopping ramp programs.

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zero-emission mining equipment aces reliability test at subarctic mine

zero-emission mining equipment aces reliability test at subarctic mine

Miner Agnico Eagle Finland and equipment manufacturer Epiroc announced that Epirocs battery-powered machines passed a tough-conditions test at Agnicos Kittil mine in northern Finland, close to the Arctic Circle.

According to the companies, the green machines endured the harsh polar environment and delivered high reliability and increased performance, while their battery autonomy matched both parties expectations.

This project is aligned with our ambition to deliver the worlds greenest machines and establishing ourselves as a leading provider of zero-emission battery-electric vehicles, Sami Niiranen, president at Epirocs Underground division, said in a media statement.

The benefits with battery-electric equipment are obviously the reduction of fossil fuels and the reduction of our carbon footprint, but also the major advancements that we have made on health and safety for our employees, Tommi Kankkunen, Kittils general manager, said in the press brief.

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