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- Title
锌湿法冶金三段净化渣置换中上清液回收铜.
- Authors
牟兴兵; 付维琴; 刘俊场; 翟忠标; 王 坤; 邹 维; 谢天鉴
- Abstract
The residual metal zinc powder in the three-stage deep purification slag of zinc hydrometallurgy was used to replace the copper in the supernatant of precipitation to recover copper. The influence of adding method of purification slag and technological parameters on copper deposition was studied. The results show that after acidification and slurry pretreatment of the three-stage purification slag and adding it into the medium supernatant in several times, under the conditions of adding 12.45 g of wet purification residue, 15 g/L sulfuric acid concentration of the slurry, 75 c reaction temperature and 2.0 h reaction time, the copper deposition rate can reach 90. 53%, and the copper content in the liquid after copper deposition is 161. 50 mg/L. The copper content in the liquid after copper deposition meets the control requirements of the deep purification section of zinc smelting production. After acid washing, the copper content in the copper slag is 54.87%, and the copper recovery rate is 89.37%, meeting the requirements of copper slag for sale.
- Subjects
ZINC powder; ZINC smelting; METAL powders; COPPER slag; SULFURIC acid; HYDROMETALLURGY
- Publication
Mining & Metallurgy (10057854), 2022, Vol 31, Issue 6, p105
- ISSN
1005-7854
- Publication type
Article
- DOI
10.3969/j.issn.1005-7854.2022.06.016