Lu J.-B.,Jinchang Group Co. |
Wang D.-X.,Jinchang Group Co. |
Li Y.-J.,CAS Lanzhou Institute of Chemical Physics |
Zhao Z.,Jinchang Group Co. |
And 3 more authors.
Xiandai Huagong/Modern Chemical Industry
An activated amorphous nickel sulfide which has large surface area and high activity and prevents from being oxidized in the air is prepared to meet the requirements of industrial production. The influences of different reaction conditions on copper-removing are investigated. The reactivity of copper ions can be improved when a suitable amount of activating agent is added. The results show that removing copper with activated nickel sulfide will satisfy the industrial demand under the following conditions: 1:1.09 molar ratio of copper ion and nickel sulfide, 3.0-3.5 of pH and 20 minutes of reaction at 60℃. The concentration of copper is less than 3 mg/L in the electrolyte solution and the mass ratio of copper to nickel is more than 15:1 in the residue after removal of copper. In addition, after the activated nickel sulfide is kept in reduction solution for 33 days, it can still maintain a higher activity. ©, 2014, China National Chemical Information Center. All right reserved. Source