China Beneficiation Equipment Gravity Separator Spiral Chute for Gold Tin Mining Spiral Chute, Find details about China Spiral Separator, Spiral Chute from Beneficiation Equipment Gravity Separator Spiral Chute for Gold Tin Mining Spiral Chute - Nanjing Sinonine Heavy Industry Science Technology Co., Ltd. Enriching (Gravity separation equipment). The gravity separation equipment such as the centrifugal concentrator, spiral chute, jig machine, are always applied at this process to enrich the heavy minerals. 3rd. Roughing, scavenging, and cleaning. We usually apply the shaking table for concentration after the 2nd step. 4th. Refinery.