| abstract |
The invention discloses a method for recovering copper and silicon powder from waste organosilicon contact bodies. The copper-containing waste silicon powder and sulfuric acid solution are added to the flotation machine, and then the flotation machine is sucked in air and mechanically stirred for oxidative leaching, and the leaching residue and the copper-containing leaching solution are obtained by solid-liquid separation. The leaching residue is washed and filtered to obtain washing filtrate and silicon powder, and the washing filtrate is mixed with the copper-containing leaching solution, and then electro-deposited to obtain cathode copper. In the invention, the flotation machine is used as the leaching device, and the air is used as the oxidant to recover copper and silicon powder from the waste organosilicon contact body, with high production efficiency, low treatment cost, environmental protection for the equipment, no secondary pollution, and low energy consumption; In the past, the iron was removed by ball milling and magnetic separation treatment on the waste organosilicon contact body, and no complicated extraction and back-extraction operations were required. The recovery rates of copper and silicon powder were both above 95%. Utilization is significant. |