水钴矿湿法冶金废渣抑制钴、钒浸出毒性工艺研究

郭秋松; 刘志强; 朱薇; 张魁芳

doi:10.3969/j.issn.1674-991X.2018.01.013

水钴矿湿法冶金废渣抑制钴、钒浸出毒性工艺研究

doi: 10.3969/j.issn.1674-991X.2018.01.013

郭秋松^1,2,
刘志强^1,2,
朱薇^1,2,
张魁芳^1,2

^1. 广东省稀有金属研究所,广东广州 510650
^2. 广东省稀土开发及应用重点实验室,广东广州 510650

详细信息

作者简介:
郭秋松(1973—),男,教授,博士,主要从事环境污染防冶与生态修复研究, guoqiusong@163.com

中图分类号: X705
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- 被引次数: 0
出版历程
- 收稿日期: 2017-07-12
- 刊出日期: 2018-01-20

Research on cobalt and vanadium leaching toxicity reduction of dumped sludge from heterogenite hydrometallurgy process

^1. Guangdong Research Institute of Rare Metals, Guangzhou 510650, China
^2. Guangdong Province Key Laboratory of Rare Earth Development and Application, Guangzhou 510650, China

摘要

摘要: 以水钴矿湿法冶金废渣为研究对象,采取电化学辅助方法酸浸分离钴、钒并抑制其浸出毒性,考察了电辅助浸出时间、液固比、硫酸浓度、电流密度等因素对抑制废渣钴、钒浸出毒性的影响。结果表明:在浸出时间为120 min、硫酸浓度为600 mg/L、浸出液固比为10:1(mL/g)、电流密度为200 A/m ²条件下,经电化学辅助酸浸处理,水钴矿湿法冶金废渣的钴、钒、铜、锰、镍等重金属元素浸出毒性均明显降低;水平振荡法和硫酸硝酸法试验处理后的废渣钴浸出毒性分别降低99.1%和98.8%,钒浸出毒性分别降低91.7%和95.1%,较好实现了废渣浸出毒性的高效抑制和有价元素的分离回收。
- 湿法冶金废渣 /
- 钴 /
- 钒 /
- 浸出毒性
Abstract: In order to reduced cobalt and vanadium leaching toxicity of dumped sludge in heterogenite hydrometallurgy process, the electric-assistant acid leaching process was investigated. The influence of the electric-assistant acid leaching time, liquid-solid ratio, sulfuric acid concentration and electric current density on decreasing leaching toxicity was studied intensively. The results shows that under the condition of electric-assistant leaching time 120 min, sulfuric acid concentration 600 mg/L, liquid-solid ratio 10:1(mL/g) and electric current density 200 A/m ², the leaching toxicity of heavy metals such as cobalt, vanadium, copper, manganese and nickel has reduced obviously. After treatment by horizontal vibration method and sulphuric acid and nitric acid method, the cobalt leaching toxicity decreased by 99.1% and 98.8%, while the vanadium leaching toxicity decreased by 91.7% and 95.1% respectively. Therefore, the leaching toxicity of dumped sludge from heterogenite hydrometallurgy process was reduced efficiently, and the valuable elements were recovered and utilized successfully.
- hydrometallurgy sludge /
- cobalt /
- vanadium /
- leaching toxicity

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