Spiral Classifier

 

Spiral classifier is one of the beneficiation equipment. It is a kind of equipment for mechanical classification based on the principle that the specific gravity of solid particles is different, so the precipitation speed in liquid is different. Spiral classifier is used to deal with alluvial placer, especially for those with high dissociation degree and flat shape of useful mineral monomers. Spiral classifier is called classifier for short. There are mainly four kinds of classifiers: high weir single screw and double screw, submerged single screw and double screw.

 

 

The classifier is widely used in the concentrator and ball mill to form a closed-circuit circulation process and separate ore sand, or in the gravity concentrator to classify ore sand and fine mud, as well as the particle size classification of ore slurry in the metal beneficiation process, as well as desliming and dehydration in ore washing operation. The classifier has the characteristics of simple structure, reliable operation and convenient operation.

 

 

When the machine works, the classifier is based on the principle that the size and specific gravity of solid particles are different, so the settling speed in liquid is different. Fine ore particles float in water and overflow, and coarse ore particles sink at the bottom of the tank. It is a classification equipment for mechanical classification by pushing the screw to the upper part for discharge. It can filter the material powder milled in the mill, then screw the coarse material into the feed inlet of the mill by using the screw plate, and discharge the filtered fine material from the overflow pipe. The base of the machine is made of channel steel and the body is welded with steel plate. The inlet head and shaft head of the spiral shaft adopt pig iron sleeve, which is wear-resistant and durable. The lifting device is divided into electric and manual.

Technical specificatin of spiral classifier
 

Model		FG3	FG5	FG7	FG10	FG12	FG15	FG20	2FG12	2FG15
Spiral diameter (mm)		300	500	750	1000	1200	1500	2000	1200	1500
Spiral rotating speed (r/min)		8.3－2.2	8.5－15.5	2.4－9.9	1.6－7.4	5.6	2.5－6	(3.6)5.5	5.6	2.5－6
Capacity (t/d)	Return sand	35－105	145－260	100－445	160－700	1145－1370	1120－2680	(3240)5940	2290-2740	2240-5360
	overflow	10－30	45－77	31－165	50－260	150	230	400	300	460
motor	model	Y90L-6	Y90L-6	Y132S-6	Y132M2-6	Y132M2-6 Y90L-4	Y160M-6 Y90L-4	Y160L-4(6) Y100L2-4	Y132M2-6 Y90L-4	Y160M-6 Y90L-4
	Power (kw)	1.1	1.1	3	5.5	5.5 1.1	7.5 1.5	15(11) 3	5.5 1.5	7.5 1.5
	Qty	1	1	1	1	1 1	1 1	1 1	2 2	2 2
dimensions	l	3844	5480	6720	8004	7979	10196	10590	8520	10270
	w	645	940	1275	1570	1700	1976	4634	2760	3490
	h	835	1274	1584	1934	3087	4080	4491	3087	4080
weight	machine	668	1620	2683	4200	7710	11283	19930	10936	22093
	Motor	27	27	65	84	110	180	200	220	240