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spiral chute | spiral separator - jxsc machine

spiral chute | spiral separator - jxsc machine

Spiral Chute is the best equipment for mining and mineral processing, which combines the characteristics of the spiral concentrator, shaking table and Centrifugal concentrator. It is made of the fiberglass lined with wear-resistant polyurethane and corundum cover, light moisture-proof, anti-rust. The spiral separator has the advantages of small occupation area, small water consumption, simple structure, no energy consumption, large capacity, easy installation, easy operation, small investment.

We supply different types of gravity separation equipment, such as gold centrifugal concentrator, shaking table, wet spiral concentrator. Spiral classifier applied in different conditions of extraction process dense media separation. Besides, the spiral chute design is available. email us to know the spiral classifier price. Mining equipment list

The Spiral separator/ spiral chute is the earliest mining machine. It has been used to classify the granularity 0.3-0.02 millimeters fine grain like iron, tin, tungsten, tantalum-niobium, gold ore, coal mine, monazite, rutile, zircon, and other metals. The non-metallic minerals which have a big enough specific gravity difference. Spiral chute principleRaise the spiral chute and fix it in the proper position, sand pump send the ore to the feed inlet, adding water to adjust the concentration of the slurry. The slurry naturally swirls from high to low and generates an inertial centrifugal force in the rotating bevel flow rate. The mineral is separated from the sand by the gravity and centrifugal force of the swirl by the difference in specific gravity, grain size and shape of the ore. The concentrate flows into the concentrate bucket and is connected by the pipeline. The tail sand flows into the tailing sand bucket and is connected to the sand pool by the pipeline, and then drained by the sand pump to complete the whole process of the beneficiation.

spiral concentrator, spiral chutes, spiral separators - gandong mining equipment

spiral concentrator, spiral chutes, spiral separators - gandong mining equipment

DescriptionsSpiral concentrator is our companys concentrating experienced scientific product, which is the best concentrating equipment, especially for concentrating sand ore in beach, riverside, seashore and stream. The product is made of the fiberglass lined with wear-resistant resin and emery. It is the domestic advanced level, the new highly effective equipment, it has been widely used in to enrichment the particle size 0.3-0.02 millimeters fine grain like iron, tin, chromite, ilmenite, tungsten, zinc, tantalum-niobium, gold, coal, monazite, rutile, zircon , other low-grade ores or non-metallic minerals which have a enough specific gravity difference.

Our company uses the newest design and a complete set of technology organization produced and strict quality testing to guarantee each specification of spiral separator qualified. We make the serialized with a special kind of grooved spiral separator to be selected by colored, ferrous metal mine, coal chemical industry, coal dressing, sulfur factory as well as the scientific research, the design department, the colleges and universities test chamber.

1 Reasonable structure and small occupation area;2 High recovery, high efficiency, and precise separation;3 Non-required power;4 Light in weight, anti corrosion, rust and wear resistant;5 Simple installation and minimal maintenance requirements;6 Low operating cost and long working life;7 Reliable running with minimal operator attention;8 Strong adaptability to fluctuation of feeding amount, density, size and grade;9 The surface of emery forms strong friction the concentration effect surpass plastic surface.

Model 5LL-2000 5LL-1500 5LL-1200 5LL-900 5LL-600 5LL-400 Spiral Diametermm 2000 1500 1200 900 600 400 Spiral Pitchmm 1200 720/540 900/720 /540 675/540 /405 450/360 /270 240/180 Starts 3 4 4 4 2 2 Feeding Sizes (mm) 4-0.04 0.8-0.037 0.3-0.03 0.3-0.03 0.2-0.02 0.2-0.02 Feeding Density (%) 20-45 30-60 25-35 25-55 25-55 25-55 Capacity (t/h) 15-40 6-8 4-6 2-3 0.4-0.8 0.15-0.2 Dimension(mm) Length 2300 1560 1360 1060 700 460 Width 2300 1560 1360 1060 700 460 Height 6500 5230 5230 4000 2600 1500 WeightKg 1100 800 600 400 150 50

gravity spiral concentrators,spiral chutes,spiral separators-well-tech international mining equipment

gravity spiral concentrators,spiral chutes,spiral separators-well-tech international mining equipment

Spiral concentrator is our companys concentrating experienced scientific product, which is the best concentrating equipment, especially for concentrating sand ore in beach, riverside, seashore and stream.

Descriptions Spiral concentrator is our companys concentrating experienced scientific product, which is the best concentrating equipment, especially for concentrating sand ore in beach, riverside, seashore and stream. The product is made of the fiberglass lined with wear-resistant resin and emery. It is the domestic advanced level, the new highly effective equipment, it has been widely used in to enrichment the particle size 0.3-0.02 millimeters fine grain like iron, tin, chromite, ilmenite, tungsten, zinc, tantalum-niobium, gold, coal, monazite, rutile, zircon , other low-grade ores or non-metallic minerals which have a enough specific gravity difference.

Our company uses the newest design and a complete set of technology organization produced and strict quality testing to guarantee each specification of spiral separator qualified. We make the serialized with a special kind of grooved spiral separator to be selected by colored, ferrous metal mine, coal chemical industry, coal dressing, sulfur factory as well as the scientific research, the design department, the colleges and universities test chamber.

1 Reasonable structure and small occupation area; 2 High recovery, high efficiency, and precise separation; 3 Non-required power; 4 Light in weight, anti corrosion, rust and wear resistant; 5 Simple installation and minimal maintenance requirements; 6 Low operating cost and long working life; 7 Reliable running with minimal operator attention; 8 Strong adaptability to fluctuation of feeding amount, density, size and grade; 9 The surface of emery forms strong friction the concentration effect surpass plastic surface.

Model 5LL-2000 5LL-1500 5LL-1200 5LL-900 5LL-600 5LL-400 Spiral Diametermm 2000 1500 1200 900 600 400 Spiral Pitchmm 1200 800/680/540 720/540/360 660/540/400 450/360/270 240/180 Starts 3 4 4 4 2 2 Feeding Sizes (mm) 4-0.04 0.8-0.037 0.3-0.03 0.3-0.03 0.2-0.02 0.2-0.02 Feeding Density (%) 20-45 30-60 25-35 25-55 25-55 25-55 Capacity (t/h) 15-40 6-8 4-6 2-3 0.4-0.8 0.15-0.2 Dimension (mm) Length 2300 1560 1360 1060 700 460 Width 2300 1560 1360 1060 700 460 Height 6500 5230 5230 4000 2600 1500 WeightKg 1100 800 600 400 150 50

gravity spiral concentrator working principle

gravity spiral concentrator working principle

The gravity spiral circuit is designed to extract and concentrate coarse gold from the recirculating load in the mill grinding circuit and hence prevent a build up within that circuit and the eventual escape of some of that gold into the C.I.L. tanks and thereon into the final tails. (See fig. 4)

For the spirals to work efficiently the feed supply must have consistent characteristics and be of a constant rate. Variations in the flow rate, the feed size distribution and percentage solids will have adverse effects upon separation. Generally the solids tonnage should give adequate loading of the concentrate and middlings areas and the pulp density should be low enough to ensure mobility of particles in these areas. BUY SPIRALS

Feed to the spirals may be adjusted by the moving of two splitter arms on either side of the cyclone underflow discharge box, this altering the volume of the feed passing over the splitter screen. (See fig. 5)

The feed may also be adjusted by varying the speed of the gravity feed pump. This is necessary when the mill feed has been dropped and it is impossible to get sufficient feed for the gravity pump by adjustment of the splitter arms. At such times the speed will need to be dropped and the water additionadjusted to provide optimum feed density.

The pulp density may be altered by the addition of water, before the splitter screen, in the gravity feed pump hopper or to the concentrate launder beneath the primary spirals. The latter option adjusts the density of the feed to the cleaner spiral only.

The static distributor (See fig. 6) at the head of the primary spirals ensures an accurate division of the pulp stream to the spirals. For maximum efficiency a constant head should be maintained in the head pot. The head can be adjusted by either altering the flow rate from the splitter screen and/or altering the annular gap between the head pot and the distributor body, by moving the head pot up or down as required.

Feed from the splitter screen passes down into the gravity feed pump hopper and from there it is pumped to the static distributor above six triplex type primary spirals. As the pulp passes down these spirals; separaration of particles occurs according to specific gravity and the heavier minerals progress to the inner profile while lighter minerals are forced towards the outer profile, along with most of the water and slimes. At the bottom of each spiral layer there are splitters which can be adjusted to ensure the optimum recovery of coarse gold. (See fig. 7)

The middlings and tailings from the primary spirals are directed to both the mill feed and the mill discharge pump. The proportion going to either may be adjusted so as to help achieve optimum grinding conditions.

The concentrate from the inner outlet of the cleaner spiral is fed directly on to the Wilfley table and the middlings and tailings report to the gravity sump pump which feeds into the mill discharge pump feed hopper.

The Humphreys Spiral Concentrator, which was invented by I. B. Humphreys and first used in 1943 for concentrating chromite in Oregon beach sands, consists of five or six spiral turns of a modified semicircular launder which is about the size of a conventional automobile tire. Feed enters the top spiral and the tailing discharges from the bottom one, while concentrate and middlings are cut off by outlet ports regularly spaced at each turn of the spiral, and the products passed through rubber hoses to common launders which run the full length of a bank of spirals. Wash water is supplied from a small wash-water channel paralleling the main channel.

Operating entirely by gravity flow and involving no mechanical parts, the separation of the heavy constituents of the feed is effected by the same centrifugal forces and flow gradients encountered in ordinary river or stream concentration.

A capacity of 38 tons per spiral was obtained in the 1000-ton per 24 hr. Oregon plant operating on about a minus 40-mesh feed and in the 5000-ton plant recently installed near Jacksonville to concentrate ilmenite 174 roughing, and 12 finishing spirals have replaced an installation of tables and flotation cells.

The Humphreys Spiral has been successfully applied to recovery of chromite from chrome sands, rutile, ilmenite, and zircon from sand deposits, tantalum minerals and lepidolite from their ores, gravity concentration of base metal ores and in the cleaning of fine coal.

How it works: Pulp is introduced at the top of the spiral and flows downward. As the pulp follows the spiral channel the light particles in the pulp stream move outward and upward into the fast flowing portion of the stream while the heavy particles move to the inner slow moving portion of the stream, where they are drawn off through concentrate ports.

Adjustable splitters allow any portion to be removed through the ports. Tailing is discharged at the bottom of the spiral. Spirals are usually installed in double units, two spirals to a frame, in rows of two to twelve. Feed is split evenly to all spirals. At one plant 21 rows of 12 spirals each are fed by one pump.

The Humphreys Spiral Concentrator is a simple, efficient gravity concentrator which effects a separation between minerals of the proper size range that have sufficient difference in their specific gravity.

This concentrator is a spiral conduit of modified semi-circular cross-section, with outlets for removal of concentrate and middling. Pulp is introduced at the top of the spiral. As the pulp follows the spiral channel, lighter particles in the pulp stream move outward and upward into the fast moving part of the pulp stream. The heavy particles move to the inner, slow moving portion of the stream, where they are drawn off through concentrate or middling outlets. Adjustable splitters allow any portion of the concentrate or middling to be diverted through the outlets. Tailing discharges from lower end of spiral. A full- size spiral is used for laboratory testing. Two arrangements are suggested for test work.

In the closed circuit test unit illustrated, although a full-size spiral is used, as little as 20 pounds of material will indicate the possibility of spiral concentration in a batch test. By removing measured quantities of products, and adding like amounts of feed in repeated steps, substantial samples may be taken for analysis and estimates of capacity. Results from this procedure, using 100 to 300 pounds of material, are close to pilot test results.

Another arrangement, also using a full-size spiral, is a small pilot plant, and is suitable for test work where a larger quantity of material can be handled. The storage tanks may be built on the job from drawings supplied. This unit allows continuous feeding of material and permits accumulation of concentrate and tailing in separate tanks, which may then be re-run as feed for second stage concentration or scavenging of tailing.

Spiral concentrators are modem, high capacity, low costunits developed for the concentration of low grade ores. Spirals consist of a single or double helical sluice wrapped around a central support with a wash water channel and a series of concentrate take-off ports placed at regular intervals along the spiral (Figure 17). To increase the amount of material that can be processed by one unit, two or more starts are constructed around one central support. New spirals have been developed that do not use wash water. These new units have modified cross sections and only one concentrate-take-off port, which is

rapid wear of the rubber lining and irregular wash water distribution resulted in major production problems. Although still in use, the Humphreys cast iron spirals have been largely superseded by a variety of other types, notably the fiberglass Reichert spirals and new, lightweight Humphreys spirals.

The processes involved in mineral concentration by spirals are similar for all models. As feed containing 25-35% solids by volume is fed into the channel, minerals immediately begin to settle and classify. Particles with the greatest specific gravity rapidly settle to the bottom of the spiral and form a slow-moving fluid film. Thus the flow divides vertically: one level is a slow-moving fluid film composed of heavy and coarse minerals; the other level, the remainder of the stream, is composed of lighter material and comprises the bulk of the wash water. The slow-moving fluid film, its velocity reduced by friction and drag, flows towards the lowest part of the spiral cross-section (nearest the central support) where removal ports are located. The stream containing the lighter minerals and the wash water develops a high velocity, and is thrust against the outside of the channel (Figure 18). Separation is enhanced by the differences in centrifugal forces between the two: the lighter, faster flowing material is forced outward towards the surface, and the heavier, slower material remains inward towards the bottom.

Spiral concentrators are capable of sustained recoveries of heavy minerals in the size range of 3 mm down to 75 microns (6 to 200 mesh). They are suitable for use as roughers, cleaners, or scavengers. Feed rates may vary from 0.5 to 4 tons per hour per start, depending on the size, shape, and density of the valuable material. Some factors that affect recovery are the diameter and pitch of the spiral, the density of the feed, the location of splitters and take-off points, and the volume and pressure of thewash water. Individual spirals are easily monitored and controlled, but a large bank of spirals requires nearly constant attention.

Advantages of spiral concentrators include low cost, long equipment life, low space requirements, and good recovery of fine material. They can also be checked visually to determine if the material is separating properly. For maximum operating efficiency, feed density should remain constant, the particle-size distribution of the feed should be uniform, and fluctuations in feed volume should be minimized. Spiral concentrators will tolerate minor feed variations without requiring adjustment. Spiral concentrators, like cone concentrators, are efficient, low-maintenance units that should be considered for any large- scale gravity separation system.

The newer Humphreys spirals are capable of recovering particles as small as 270 mesh (53 microns). In a test at CSMRI, a new Mark VII Reichert spiral recovered 91.3% of the free gold contained in the feed in a concentrate representing only 5.4% of the feed weight. The unit showed little decrease in gold recovery efficiency with material down to 325 mesh (45 microns) (Spiller, 1983).

spiral concentrator | multotec

spiral concentrator | multotec

As a turnkey supplier of gravity concentration equipment across the world, Multotec can deliver end-to-end spiral solutions, from process audits and test work, to complete spiral concentration plants optimised for your process. With our global branch network, we support your application with tailored field service and complete availability of spares for your plant.

Your local Multotec branch will help you with end-to-end solutions for your gravity concentration plant, from testing equipment through to field service, ongoing optimisation and any maintenance. We keep a wide range of spares and accessories for your spirals, reducing lead times to ensure maximum processing uptime.

We have a range of spirals, from 3 to 12 turns, with high-, medium- and low-gradient profiles. Our high capacity spirals (the HX series) provide a per-start tonnage rating of 4 to 7.5 tons per hour, depending on the mineral type, and is especially suited for the treatment of low-grade ore, where large tonnages are processed.

Mineral spiral separator components include the spiral trough; sliding or auxiliary splitters; launders; distributor and piping; feed box; product box and stainless steel product splitters; and the discharge chute at the bottom of the modular housing frame. Our spiral separators have a diameter of +/- 950 mm.

Our single- and double-stage spiral separators are optimised for coal particles in the size range of 1 to 0.1 mm, providing enhanced coal washing for slurries. Their compact, modular design provides flexibility when building or upgrading your plant.

Double start spirals reduce the requirements of height and floor space in a plant, and reduce capital and operating costs. The MX7 spiral separator is ideal for difficult-to-wash coals, improving the overall efficiency of tougher separation applications.

Spiral concentrators are simple low energy-consuming devices used for mineral separation mainly on the basis of density or by shape. Spirals are widely used in mineral processing as a method for pre-concentration and have proven to be metallurgically efficient and cost-effective.

As the mineral stream is fed from the top of the spiral, a combination of forces act on particles as they move down the trough of the spiral circuit. These forces include gravitational forces, centrifugal force, hydrodynamic drag, and lift and friction forces. Apart from the forces acting on a spiral, the properties of the slurry flowing on a spiral including, solids concentration, feed rate and wash water also plays an important role in the separation on the spiral.

During separation, the heavy particles migrate toward the inner region of the trough, with lighter-density particles migrating to the outer edge of the trough. In a dry spiral separation, materials are sorted by shape. Rounder particles travel faster, are forced to the perimeter of the spiral, from where they can be collected separately from non-round material.

spiral chute - pineer mining machinery

spiral chute - pineer mining machinery

Spiral Chute is the best equipment for mining and mineral processing, which combines the characteristics of the spiral concentrator, shaking table and Centrifugal concentrator. It is made of the fiberglass lined with wear-resistant polyurethane and corundum cover, light moisture proof, anti-rust. It is mainly used for separation and recovery of a wide range of minerals: zircon, ilmenite, rutile, iron ore, chromite, manganese, tin, tantalum and tungsten ore, silica sands, gold, copper and base metals and etc., as well as other non-ferrous metals, rare metals and non-metallic minerals.

The Spiral separator/ spiral chute is the earliest mining machine. It has been used in to classify the granularity 0.3-0.02 millimeters fine grain like iron, tin, tungsten, tantalum-niobium, gold ore, coal mine, monazite, rutile, zircon, and other metals. The non-metallic minerals which have a big enough specific gravity difference.

Raise the spiral chute and fix it in the proper position, sand pump transport the ore to the feed inlet, adding water to adjust the concentration of the slurry. The slurry naturally swirls from high to low, and generates an inertial centrifugal force in the rotating bevel flow rate. The mineral is separated from the sand by the gravity and centrifugal force of the swirl by the difference in specific gravity, grain size and shape of the ore. The concentrate flows into the concentrate bucket and is connected by the pipeline. The tail sand flows into the tailing sand bucket and is connected to the sand pool by the pipeline, and then drained by the sand pump to complete the whole process of the beneficiation.

spiral separator | spiral chute | spiral classifier | mining equipment

spiral separator | spiral chute | spiral classifier | mining equipment

The spiral separator is the best gravity concentrating equipment, especially for concentrating sand ore in seashore and riverside. It is made of the fiberglass, lined with wear-resistant polyurethane and covered with corundum cover. It has advantages such as lightweight, moisture proof, anti-rust and corrosion, noiseless, very suitable for the different feeding particle sizes and grades.

Capacity: 0.15-8t/h Feeding size: 0.3-0.02mm Advantages: 1. Simple structure, easy to operate and maintain 2. Low energy consumption 3. Relate wide range of particle size 4. Small volume, space saving 5. High productivity and efficiency

Main parts: ore distributor, feed chute, spiral chute section, cutting trough, collecting hopper, support, etc. Spiral separator types: single spiral separator, lab spiral separator, rotary spiral separator, multi-deck spiral separator.

Application: The spiral separators are designed for classifying the granularity 0.3-0.02 millimeters fine grain like iron, hematite, ilmenite, chromite, brasses, tin, tungsten, tantalum-niobium, gold ore, coal mine, monazite, rutile, zircon, and other Non-ferrous metal, rare metal, and non-metallic minerals with different specific gravity in the mineral processing plant.

Working principle of spiral separators The ore materials are separated by the specific difference of gravity force, inertial centrifugal force, flow force, and surface friction of the light and heavy ore particles in the downward flow along the spiral tube slope. Generally speaking, the movement of the slurry flow on the spiral concentrating tables surface produces two directions, one is the longitudinal flow which rotates swiftly around the vertical axis of the spiral chute and down along the chute surface, which is called the main flow, the other is the transverse flow which rotates around a balance layer of the ore flow itself, called transverse circulation flow or vice flow. Under the comprehensive action of longitudinal main flow and transverse circulation, the mineral particles on the surface of spiral classifier move differently along longitudinal and transverse direction due to different density, particle size and shape, and settle at the bottom of the spiral groove in different time and speed, so the mineral particles are stratified according to density and particle size.

Stratification is the first stage of the separation process, which is basically completed after the first processing circuit of the spiral separators. After delamination, the light mineral particles in the upper layer flow to the outer edge of the spiral separator machine gradually, while the heavy mineral particles in the lower layer are affected less by the longitudinal main flow and move to the inner edge gradually. In this way, the layered particles are divided again, which is the second stage called zoning, completed after series ( 3-5 times ) sorting process. After the above two stages, the ore intercepting trough and the ore receiving hopper discharge the different grade separation products from the clay trough, and the separation process is completed.

The grain size distribution rule along the cross-section of the wet spiral separator is as follows: under normal ore-feeding conditions, more than 70% of the ore particles are concentrated in the middle of the spiral concentrator beneficiation area; About 20% of the ore grains are located at the inner edge of the chute; Less than 10% of fine ore grains are near the outer margin.

JXSC spiral separator manufacturer ( and other mining equipment) focuses on producing spiral gravity separator decades of year, qualified separator machines popular in the world market of various mineral processing. Contact us to the spiral separator price, installation instruction and special design service. Spiral separator for sale. Click to find more gravity concentration methods in mineral processing.

Mining Equipment Manufacturers, Our Main Products: Gold Trommel, Gold Wash Plant, Dense Media Separation System, CIP, CIL, Ball Mill, Trommel Scrubber, Shaker Table, Jig Concentrator, Spiral Separator, Slurry Pump, Trommel Screen.

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