New process for recycling and treating calcium silicate slag containing copper and molybdenum

The invention provides a new process for recovering and treating calcium silicate slag containing copper and molybdenum, which comprises the following steps: 1) adding sulfuric acid into the calcium silicate slag containing copper and molybdenum, and adjusting the pH value for pickling; 2) carrying out primary filter pressing after pickling, washing with sulfuric acid after filter pressing, and blowing and slagging after washing; (3) sodium hydroxide is added into the copper and molybdenum mixed solution obtained in the step (2), the pH value is adjusted, and copper deposition is conducted; (4) carrying out secondary filter pressing on the solution subjected to copper deposition, washing after filter pressing is finished, and blowing and slagging after washing is finished; (5) sulfuric acid is added into the molybdenum solution obtained in the step (4), the pH value is adjusted, and molybdenum precipitation is conducted; and (6) the solution obtained after molybdenum precipitation is subjected to third-time f