1970s by engineers invented in China, is mainly used for sand Gold selection. Thin gold on gold capillary effect is very good. It effectively overcome the chute compaction phenomenon, but also reduce the silt trough phenomenon, significantly improved the recovery of fine gold. The original fixed chute is gold carpet of gold, as a result of compaction chute, silt trough other phenomena, gold carpets mention selection rate net of gold is only about 30% of these shortcomings, encouraging chute targeted were overcome - - it's bottom plate is made of rubber, the use of mechanical agitation baseplate so slow agitation floor, overcome sediment compaction, periodic agitation, complete layering and sediment, making the net selection rate to about 90%. Agitation chute maintenance is simple. Can be used alone and fixed chute together, it can be connected to electricity, and the installation of a fixed chute is not much difference. At best, the most difficult is to change the rubber-soled (single 3 ---- 6 months for once, a rubber 100 dollars to get. Double thick changed once a year to two years), two unskilled Workers use four hours. The main technical parameters: Device Model feed size power handling capacity Dimensions Weight Reducer RSG-20 15-20 ≤10 1.1 200 3 * 0.9 * 0.7 0.6 RSG-50 30-50 ≤10 3 250 3.2 * 1.5 * 0.95 1.2