| abstract |
The invention discloses a method for removing arsenic from copper ore, in particular, after coarse grinding of arsenic-containing copper ore, after first flotation, copper coarse concentrate and primary flotation tailings are obtained, and copper coarse concentrate is subjected to second time. Flotation and arsenic removal of copper concentrate and secondary flotation tailings, secondary flotation tailings return to coarse grinding, primary flotation of tailings after fine grinding, after three times of flotation, respectively, three flotation concentrates and three floats The tailings are selected, the third flotation concentrate is returned to the first flotation operation, and the third flotation tailings is obtained by leaching method in the ultrasonic wave radiation environment to obtain the leaching slag and the leachate. After the leaching liquid is oxidized, the leaching solution is purified by sulfide precipitation. The precipitate and the leaching slag enter the tailings together, and the precipitated filtrate is a copper noble liquid. The method is simple in process and easy to implement, and has good arsenic removal effect on copper ore, and can simultaneously treat arsenic-containing complex copper ore containing copper sulfide and copper oxide, and can be widely applied to arsenic removal in copper ore in industry. |