Spiral classifier Introduction 
 Screw machine high weir type single helix and double helix, single helix of low weir and the double helix, sank in high weir spiral classifier and the double helix of several classifier low weir now use very little, mainly high weir type, and sunk. 
 Mineral processing equipment spiral classifier is one of the beneficiation equipment, spiral classifier with the proportion of solid particles, and thus the rate of precipitation in the liquid principle, a kind of mechanical grading equipment. As a washing machine manufacturer products in strict accordance with national standards. The grind can mill material powder level in the filter, and then the crude material spiral piece rotary vane mill feed screw and mouth to filter out the fine material discharged from the overflow pipe. Spiral classifier referred to as classifier. Grader high weir type single helix and double helix, sank single spiral and the double helix of four grading machine.