A spiral classifier 


 Grading machine Introduction: 
 Grader high weir type single helix and double helix, sank single spiral and the double helix of four grading machine. 

 Spiral grader scope of: 
 The grading machine is widely used in closed circuits with ball mills sub-way shunt mineral sands, or grading ore and fine mud, and metal beneficiation processes on the slurry particle size classification used in the gravity concentrator in the Concentrator, off mud and washing operations, dehydration and other operations. The machine has a simple structure, reliable, easy to operate. The grading machine is by means of solid particles of different sizes, specific gravity, and therefore the principle of settling velocity in the liquid, the fine ore particles zooplankton in the water into the overflow out of the coarse ore particles sink on the bottom. Push the upper part of the discharge by the screw, a kind of mechanical grading grading equipment, can mill to grind the material powder level in the filter, and then the crude material using spiral piece rotary vane screw mill feed inlet, to filter out the fine material discharged from the overflow tube. The machine base is made of channel steel body welded by steel plate. Into the head of the screw axis, the first axis, using pig iron, wear-resistant and durable to enhance the device electric and manual. 

 Spiral classifier it works: 
 Spiral classifier by means of solid particles of different sizes, specific gravity, and therefore the principle of settling velocity in the liquid, the fine ore particles zooplankton in the water into the overflow out of the coarse ore particles sink on the bottom. Push the upper part of the discharge by the screw, a kind of mechanical grading grading equipment, can mill to grind the material powder level in the filter, and then the crude material using spiral piece rotary vane screw mill feed inlet, to filter out the fine material discharged from the overflow tube. The machine base is made of channel steel body welded by steel plate. Into the head of the screw axis, the first axis, using pig iron, wear-resistant and durable to enhance the device electric and manual. 

 Spiral grader structural features: 
 The grading machine is mainly composed by the transmission, spirochetes, a tank, the lifting bodies, the lower bearing (bearing) and the row of ore valve. 
 The main technical parameters of the spiral classifier 
 Specifications Model back to the sand 
 (T/24h) overflow 
 (T/24h) Speed 
 (R / min) Motor Power 
 (Kw) Weight 
 (Kg) 
 The FG-7.5 340-570 65 6-10 3 2830 
 FG-10 675-1080 110 5-8 5.5 3.91 thousand 
 FG-12 1170-1870 155 5-8 5.5 7700 
 The FG-15 1830-2740 233 4-6 7.5 12 500 
 FG-20 3240-5400 400 3-5 11 20500