Spiral Classifier

Spiral Classifier is widely used for classification according to the particle size in the mineral processing flow, and is also applicable for desliming and dehydrating in the mineral washing work. Generally, Classifier forms a closed process flow with ball mill. The classifier has the advantages of simple structure, reliable working, and convenient operation, etc.

Working Theory of Spiral Classifier

The Spiral Classifier depends on different deposition speed of solid particle due to their size difference and weight difference. Thin mineral particle can float in the water and flow out, and the coarse mineral particle will deposit into the bottom of the cell, which is pushed up by screw and discharged. Classifier is a kind of mechanical classifying equipment. Classifier can filtrate the powdery materials grinded by ball mill, transport the coarse materials into inlet with screw, and discharge the filtrated fine materials through overflow pipe.

Structure of Spiral Classifier

Spiral Classifier mainly consists of transmission device, screw, cell, movable lift, lower seat (bush) and discharge valve. The bottom seat adopts V-iron, and the machine frame is welded and connected steel board. The water inlet and axis of the screw axle adopt durable pig iron cover.

Purpose of Spiral Classifier

Spiral Classifier is widely used for classification according to the particle size in the metal mineral processing flow, and is also applicable for desliming and dehydrating in the mineral washing work. Generally, Classifier forms a closed process flow with ball mill.

Specification and Technical Parameter of Spiral Classifier
Typer and Specification	Return Sandt/24h	Overflowt/24h	Rotary Speedr/min	Power of Motorkw	Weightkg
FG-7.5	340-570	65	6-10	3	2830
FG-10	675-1080	110	5-8	5.5	3910
FG-12	1170-1870	155	5-8	5.5	7700
FG-15	1830-2740	235	4-6	7.5	12500
FG-20	3240-5400	400	3-5	11	20500