SX20-3 sand and gold washing unit is based on the SX20 and SX20-1,SX20-2 model to further improve the structure of the model, After many years of industrial tests, the SX20 molding sand gold washing unit has obtained better technical and economic indexes. The birth of SX20 sand gold washing unit has filled a blank for the equipment and process equipment for the washing and processing of open pit mining of placer gold in China. A new technical approach is opened up for placer gold dressing. The recovery rate of this unit is 14.65% higher than that of the current chute. Compared with the jig, the unit has the advantages of simple structure, stable and reliable operation, high enrichment ratio, less water consumption and easy maintenance and operation. The recovery rate is as high as 90. Compared with the gold mining ship, it has the advantages of less investment and faster efficiency, less labor intensity, wide recovery granularity and easy relocation. The centrifugal disc separator can be used on the gold mining ship, and the whole set of water supply is 50 m per hour to supply the water gun. Central water pipe and centrifuge unit for washing concentrate. The water gun water supply is 75, that is, the water supply of the water pipe in the center of 37.5m per hour is 25%, that is, the working pressure 1.5-2KG/cm is 12.5 m per hour and the water supply is flushed every 20 minutes or so for each centrifuge.
II.Main technical and economic indexes of equipment (industrial test report of Jinpan gold deposit, Chayou Zhongqi, Inner Mongolia, 1981)
1, ore placer gold grade: 0.35 g-5 g / m (for reference data only).
2, processing capacity: 24 m / h-20 m / h.
3,Recovery rate: 90%.
4, liquid-solid ratio: 5-3: 1.
5,The yield of concentrate is 0.5%.
6, stripping cost: 9.69 yuan / m.
7, washing cost: 3.48 yuan / m.
8, output value: 24.9 yuan / m。
9,Profit: 11.7 yuan / m.
