1 results about "High copper" patented technology

The invention provides a method for recycling rhenium from copper smelting smoke washing waste acid. The method includes the steps that A, the copper smelting smoke washing waste acid is filtered, and clear waste acid and selenium mud are obtained; B, the clear waste acid is mixed with a first precipitation agent to react, and copper-removed later liquid and copper-deposited slag are obtained; and C, the copper-removed later liquid is mixed with a second precipitation agent to react, rhenium-deposited later liquid and rhenium-rich slag are obtained, and in the clear waste acid, the copper content ranges from 0.2 g/L to 3 g/L; or the method includes the steps that A, the copper smelting smoke washing waste acid is filtered, and clear waste acid and selenium mud are obtained; and D, the clear waste acid is mixed with a precipitation agent to react, rhenium-deposited later liquid and rhenium-rich slag are obtained, and in the clear waste acid, the copper content is larger than 0 g/L and smaller than 0.2 g/L. According to the method, the high-copper waste liquid is subjected to copper and rhenium deposition step by step, the low-copper waste liquid is subjected to rhenium deposition in one step, only one kind of auxiliary material sodium thiosulfate is needed in the whole process, the copper recycling rate ranges from 95.3% to 99.8%, and the rhenium recycling rate ranges from 99% to 99.53%.