magnetite mining machinery introduction
Many ores contain a variety of iron ore. According to their mineral composition, they can be divided into four categories: magnetite, hematite, limonite and siderite. Due to the differences of their chemical composition, crystal structure and geological conditions, all kinds of iron ore have the different external morphology and physical properties.
Although geological survey of the Antarctic continent and its shelf is difficult and mineral resources development is difficult as well, with the development of mineral resources in other continents dwindling and dried up, it will force humans come into the ocean, Antarctica, or other place to find a way to explore minerals. As to fears that mineral resources development may cause the environment, ecological destruction and pollution, humans will find proper solutions with the progress of science and technology. But at present, the South Pole is banned all the development and utilization of mineral resources.
Identified as the world's reserve of iron is considerable, but the rich iron ore deposit with industrial production value, it is not so optimistic. In recent decades, geologists gradually pay attention to Antarctica for the vision of iron ore resources. Iron ore is one of the largest mineral reserves found in the Antarctic continent, mainly in the east of South Pole.
Mine crusher is mainly used for all kinds of stone crushing. According to the different working principle of broken and the different particle size, it is divided into many types. Commonly used mechanical crushing machines are jaw crusher, counterattack crusher, vertical impact crusher, hydraulic cone crusher, hammer crusher, roll crusher, compound crusher, cone crusher, gyratory crusher, mobile crusher etc. Crusher is widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry, and many other sectors.
Jaw crusher is mainly used as coarse crusher and medium crusher in mining, building materials, construction and other departments. According to the activities of the motion of the jaw plate in different ways, Jaw crusher can be divided into simple oscillating jaw crusher; complex oscillating jaw crusher and comprehensive oscillating jaw crusher produced by shanghai SBM.
Counterattack crusher is a new type of high efficiency crushing equipment. Its features are: small volume, simple structure, big crushing ratio, less energy consumption, large production capacity, uniform product size, and selective crushing effect, which is a very promising device. The chief drawback of counterattack crusher is that plate hammersand counterattack plate especially easy to wear and tear, especially when dealing with hard ore. At present due to the emergence of some wear-resisting material, the drawback of counterattack crusher can be avoided and this crusher has been applied in some metal concentrator. Due to the plate hammer is easy to wear and tear, it is restricted in the application of hard material broken and usually used in coarse crushing, or finely crushing in limestone, coal, calcium carbide, quartz, dolomite, sulfide ore, gypsum and chemical raw materials and other brittle materials,which are not so hard.
Allthese crushers are produced by shanghai SBM, a professional manufacturer and supplier of some mining machines as well as some beneficiation machines. Thecompany devotes their focus into the latest mining machines' research and development. In recent decades, they have designed many advanced mining machines, which sales well in more than 170 countries in the world. Mainly machines produced by SBM are crusher and grinding machine. These two categories products have got their reputation in the world.
magnesitemining equipment and open pit quarry plant for sale
China has the world's richestmagnesite resources.The total magnesiteore reserves are 3 billion tons, ranking No. 1 in the world. One important feature of Magnesite is not widely distributed;the reserves are relatively concentrated in some region. Magnetiste is primarily used as refractories, also for preparing compounds of magnesium and extraction of magnesium metal. Other major producers of magnesite ore in the world include the former Soviet Union, North Korea, the Czech Republic, Yugoslavia, Austria,Australiaand Greece and other countries.
In early time, magnesitemining exploitation started with open pit mining, but due to higher quantities demanded and the increase in thickness of the overburden.When deposits are difficult to reach from the surface (depth, cliffs permitting side access), the only alternative is underground workings. Currently some 90% of thetotal production is produced in underground mining. There are both open pit mining plant and underground mining equipment for magnesite in the world market.
Pillar mining system withuncemented backfilling is often used for magnesite mining operation.The main advantage of this mining method is the high flexibility for quality control. The bigdisadvantage is that the support of the roof is destroyed when taking the nexthanging wall. New support then has to be installed to protect the miners.This mining method has proven high efficiency up to an overburden of some 700 m. If theoverburden is higher than that, the pillars have to be redesigned due to higher stresses and theincreased risk of rock fall.
In magnesite mining applications, the extracted magnesite will go through several processing operation, such as extraction, crushing,grinding, screening, separation etc. Crushing between jaw crushers or rollers crushers is the normal practice, followed by coarse screening to produce half to one inch lumps for gravels etc. Further crushing and screening yields smaller pieces, particularly 3/8 inch, 1/4 inch, and 3/16 inch, cleaned by passing over trommels.
SBM has been dedicated in mineral mining and processing technology for several decades. With know-how technology, we developed the state-of-art magnesiteminingequipment for sale, such as jaw crusher, impact crusher, cone crusher, mobile crusher, ball mill, ultrafine mill, vibrating screen, classifier, magnetic separator, flotation separation machine etc. SBM experts can do ore experiments and analyze the ore properties, and customize suitable mining solution according to specific requirements.
Open pit mining methods requires low cost than underground mining method, if the magnesite ore deposit is not so deep. Magnesite ores are produced by open pit mining by developing benches up to 7.5 m height. Mining activities in open pits may be divided into five main stages such as overburden removal, drilling, blasting, loading, and transporting to magnesiteopen pit quarry plant. Enrichment of raw magnesite minerals from open pit can be divided into the following main operations: screening, crushing, sizing, and concentration, and most of these operations are widespread to the production of sized aggregates and ores.
In magnesite open pit quarry plant, the following several main types of machines are involved:
Crushing plant: jaw crusher for primary crushing, impact crusher and hammer crusher for secondary crushing, gyratory crusher and cone crusher for tertiary crushing.
Grinding mill: ball mill, high pressure mill, ultrafine mill, vertical roller mill, trapezium mill, raymond mill etc.
Auxiliary machine: vibrating screen, belt conveyor, sand washing machine, drying plant etc.
SBM not only provides high quality equipment, we also provide whole range of consulting service and training service including mining technology, design, installation, operation, maintenance etc. We aim for providing high advanced equipment and create more wealth for customers. If you are interested, please just contact us for more information.
Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimization, filler content control, gradation control, water content control, and environmental protection into a single syst