coal spiral concentrator

Coal Spiral Concentrator

Coal Spiral Concentrators | Multotec

Multotec has designed and optimised both single (SX4) and double (SX7 and MX7) coal spiral concentrators that are supplied with steel rubber-lined or PVC/polyurethane pipe launder systems. The spiral models each have different combinations and have been developed to suit the coal quality.

KREBS - Cyclones - Coal Spirals Concentrator by FLSmidth

Spiral coal concentrators use the specific gravity of materials with different densities to separate coal, and produce a low-ash coal product at high efficiency. Our high-performance Coal Spirals deliver a feed capacity of 2 STPH to 3 STPH (1.8 mtph to 2.7 mtph) per start, dependent on raw coal quality and refuse amount to be discarded.

Gravity Spiral Concentrator Working Principle

Spiral Concentrator. Spiral concentrators are modem, high capacity, low cost units 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).

KREBS® Coal Spirals for fine coal cleaning - FLSmidth

Technical specifications and features of our Coal Concentrator Spirals include: An integral product piping system that eliminates the need for open launders. Wear- and corrosion-resistant construction. Integral "lock-in-place" cutter positioner and indicator. Recessed cutter position that allows ...

Spiral Concentrators - Mine Engineer.Com

Spiral concentrators are normally used in banks of multiple spirals. Typical capacities for spirals run from 1-3 tons per hour of feed for minerals and 3-5 tons per hour for coal. Typical construction of a spiral concentrator is fiberglass and urethane to reduce wear from abrasion.

Multotec Spiral Concentrators - Preptech

Multotec Spiral Concentrators--Coal Benefits of Two-Stage Coal Spirals (SX7) Overall Plant Benefits • Allows DMC to process only down to 1 mm size—more efficient desliming, more efficient media recovery • Often allows coarse coal circuits to operate at higher separating gravities because

Spiral Concentrator | Multotec

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.

Evaluate Spiral Concentrator Circuit Performance

Evaluate Spiral Concentrator Circuit Performance Circuit analysis can be used to evaluate the overall effectiveness of various configurations of unit operations in mineral and coal processing circuits. This powerful tool, has regretfully seen only limited application in the analysis of coal processing circuits.


around a central axis, separation occurring mainly on size and density. Spiral concentrators are primarily employed to process –fine material (-1mm particle size). Over the last few years a “low-cut” spiral technology has entered the market. The study entails a technology comparison using feed material sourced from two Exxaro coal mines.

Spiral separator - Wikipedia

Wet Spiral Separators. adding ridges on the sluice at an angle to the direction of flow. Typical spiral concentrators will use a slurry from about 20%-40% solids by weight, with a particle size somewhere between 1.5-.075 mm (17-340 mesh), though somewhat larger particle sizes are sometimes used.

Case study: high capacity spiral J concentrators

Spiral concentrators are compact, cost-effective and generally efficient gravity concentration separators for a wide range of applications (for example: coal, beach sands, iron ore, chromite and tantalite). Large mineral processing plants consist of thousands of spiral concentrators resulting in …

Gravity Concentrating Spirals - YouTube

Oct 08, 2017 · Self Feeding Sluice Box! Cool new invention takes the pain out of feeding a sluice box. - Duration: 4:00. MrTeslonian 599,518 views


The twisting open trough geometry of spiral concentrators is illustrated in Figure 1. Employed in the fine coal and heavy mineral processing industries, a slurry mix of fine (75 - 3000 µm) particles and water is fed to the top of the concentrator.


Spiral Concentrator Application for Ultrafine Coal Cleaning. Recent studies have found that spirals such as the SX7 can provide an effective gravity-based separation performance for -100 mesh coal. Required volumetric flow rate is around 15 gpm/start and feed solids content should be nearly 15% by weight.

Operating guidelines for coal spiral circuits | Request PDF

Spiral concentrators are widely used in coal preparation plants in Illinois and elsewhere to generally clean the 1 mm x 150 micron particle size fraction. Compound spirals are capable of providing...

Gravity Separation - Mineral Technologies

As the world leader in spiral technology we provide you with unparalleled levels of confidence in the performance of gravity separation circuits. We design, manufacture and supply the MD range of gravity separation equipment including spirals, shaking tables and slurry distribution and laundering systems.

Coal Mining Spiral Chute Spiral Concentrator Equipment ...

Spiral chute made of fiberglass which had combined features of spiral classifier, shaking table andcentrifugal concentrator. It was first invented in China in year of 1977 and taken as a revolution in gravity mining machine.

Gold Concentrators - Oro Industries - - The “Martin” Multi ...

Cleaner Model Spiral Concentrator A continuous or batch feed secondary concentrator for processing primary sluice concentrate, primary jig concentrate, centrifuge concentrate, and milled hard-rock ores. Set up as a cleaner, the 16 "or 24 "spiral concentrator is perfect …

Spiral Concentrators — IMSC Group

Coal/Mica Spiral Spiral Concentrators Larger diameter units than the mineral-spiral series, these spirals are designed to take advantage of the particle shape differences. Take-off splitters at different points down the helix give this spiral a high capacity to remove refuse or …

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