Ore pulps are uniformly fed into machine and form different layers as they pass across chute. Heavy minerals precipitate to bottom and are moved toward inner edge by the comprehensive action of various forces light minerals are moved toward outer inner due to the speedy rotation. As a result mineral particles with different density are divided into three zones--concentrate middling and tailing.
Stable easy control wide range of concentration.
Large capacity enrichment ratio high recovery rate.
Small cover space less water consumption simple structure no need of power.
Simple installation convenient operationless investment quick return.
Spiral chute is suitable for treatment of 0.6-0.03mm lode and placer but high mud content is bad for separation. At present spiral chute has been widely used in the treatment of iron ore tungsten tin ore niobium tantalum ore coastal and riverside placer and gold ore.