The spiral concentrator is one of the most effective, low-cost devices for the gravity beneficiation of ores. Manufactured from lightweight, corrosion and abrasion resistant materials, spirals require a minimum of maintenance and upkeep.

Washwaterless Spirals This type of spiral is used in most applications, particularly for concentrating low-grade ores. The only water required is added with the solids prior to introducing feed onto the spiral. Concentrates are removed either at the bottom directly into the product box or at several intermediate take-off points down the spiral.

Coal/Mica Spirals Larger in diameter than mineral-type spirals, these spirals are designed to take advantage of the particle shape differences as well as specific gravity differences. Take-off splitters at different points down the helix give this spiral a high capacity to remove refuse ore and siliceous contaminants from the coal or the mica.
Washwater Spirals Washwater spirals require the addition of water at various points down the spiral providing more efficient washing of the concentrate, i.e., transporting away light gangue (silica) from the concentrate band.

Spiral Selection

Specifications

For more specific information on each spiral model visit our Download Brochures page where you will find product leaflets for each series.