Spiral classifier is suitable for ore,nonmetal materials were classified,dehydration,to take off the mud etc.mainly for the wet grinding system grinding units into closed-circuit circulation flow,grinding machine is available through the mineral fine grains of relief and coarse grained return sand two products.FG type The Spiral classifier have : High Weir Spiral Classifier(single and double)FC type sunk Spiral Classifier(single and double)。