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| Industrial Test and Optimization for Preparation of Cadmium Sponge from Cu-Cd Slag |
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Received:April 23, 2019
Revised:April 30, 2019
Accepted:May 05, 2019
Published Online:August 16, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.09.008 |
| KeyWord:Cu-Cd slag; cadmium sponge; cadmium cake; industrial test; optimization |
| Author | Institution |
| wangshengdong |
北京矿冶科技集团有限公司 |
| zhaofeng |
北京矿冶科技集团有限公司 |
| Feng Lingyong |
北京矿冶科技集团有限公司 |
| Jiang Xunxiong |
北京矿冶科技集团有限公司 |
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| Abstract: |
| Copper and cadmium residues were treated by leaching, replacement, dissolving and secondary replacement. Under given production parameters, cadmium sponge with cadmium content of 80% above and zinc content of 5% below is obtained, while copper slag with copper content of about 50% and cadmium content of 2% below is sold as raw material for copper smelting. Zinc powder consumption is as high as 1 000 kg/t. In order to reduce zinc powder consumption, the further optimization process includes leaching, replacement, pressing cake, overflow slurry making liquid, secondary replacement, and pressing cake, which is a stable operation of process and industrial production. The output cadmium cake with cadmium content of 70% above meets the requirement of cadmium sponge pyrometallurgy smelting. Zinc powder consumption is 690~730 kg/t, and cadmium recovery is 98% above. |
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