This classifier can filter materials and send coarse materials to the feeding mouth and discharge fine materials from the pipe. The seat of the machine features channel steel material, while the body is armor plated and the spiral axle is made of cast iron for durability. The machine's lifting equipment can be used manually or electronically.

 

The working principle of the grader is that different solid granularities have different gravity and thus have different dropping speed. The fine ore granularities floating in the water will overflow and the big ones will sink to the bottom and discharge from the upper part by spiral pushing. It can filter the granularities from the machine and then spin the rough particles to charging part by spiral vane and discharge the fine granularities from the overflow pipe. The base of the machine adopts a channel steel and the body adopts welded steel plate. The water inlet of spiral axle and axle head adopt pig iron cover for wear proofing and long life operation. The lifting equipment has two types, manual control and electric control.

Mineral Spiral Classifier Main Technical Specifications:

Model	Spiral diameter (mm)	Trough length (mm)	Spiral rotation speed (r/min)	Production capacity (t/d)		Motor power (kw<=)		Machine weight (t)
				Back to sand	Overfall	For driving	For lifting
FG7.5	750	5500	6-10	340-570	65	3.0	Manually	2.7
FG10	1000	6500	5.0-8.0	675-1080	110	5.5	Manually	4.43
FG12	1200	6500	5.0-8.0	1170-1870	155	5.5	1.5	8.7
FG15	1500	8400	4.0-6.0	1830-2740	235	7.5	2.2	12.5
FG20	2000	8400	4.0-6.0	3240-5400	400	11	2.8	20.5
FG24	2400	9210	3.6	4650-7450	580	15	3.0	25.6
FG30	3000	1250	3.2	11625	890	22	4.0	37.7
2FG12	1200	6500	5.0-8.0	2340-3740	310	5.5*2	1.5*2	14.0
2FG15	1500	8400	4-6.0	3660-5480	470	7.5*2	1.5*2	21.1
2FG20	2000	8400	3.0-5.5	7780-11800	800	11*2	2.8*2	36.5
2FG24	2400	9210	3.6	13600	1160	15*2	3*2	46.8
2FG30	3000	12500	2.0-3.2	14600-23400	1785	22*2	4*2	73.0