China Alluvial Mineral Gold Diamond Tin Ore Jig Spiral. 1 high recovery rate through our test the recovery rate for placer gold can be 98 or more for rock gold the recovery rate could reach 97 when the feeding size is below 004mm 2 high efficiency stlb60 gold concentration separator has a capacity of 1530tph and stlb100 gold concentration separator has a capacity of 60100tphonly one machine ...