ATM INDUSTRY APC series Spiral Classifier is the professional mineral processing equipment, which is mainly applied in pre-grading and inspection grading of the grinding loop, sand washing and mud removing. APC would normally carry out grading materials according to the settlement of particles in the pattern of fluid by gravity or centrifugal force, with the features of robust structure, reliable performance, easy to handle. APC usually cooperates with the grinding equipment with diameter less than 4.0m to constitute grinding loop. According to overflowing material size, the spiral classifier is divided into high-weir type and submergence type. High-weir type is suitable for coarse classification, with overflow size larger than 0.15mm, in return, Submergence type is for fine classification of overflow size smaller than 0.15mm.