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| Study on Removal of Thallium from Secondary Displacement Solution of Zinc Hydrometallurgy |
| Received:December 25, 2018 Revised:January 03, 2019 |
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| DOI：doi：10.3969/j.issn.1007-7545.2019.05.002 |
| KeyWord:zinc hydrometallurgy; secondary replacement solution; potassium permanganate; lead acetate; Tl; removal ratio |
| Author | Institution |
| TaoJie |
河南豫光锌业有限公司 |
| Xubin |
河南豫光锌业有限公司 |
| Kong Jinhuan |
河南豫光锌业有限公司 |
| Shang Huifeng |
河南豫光锌业有限公司 |
| Gong Gaofeng |
河南豫光锌业有限公司 |
| Yang Tengjiao |
河南豫光锌业有限公司 |
| TIAN Lei |
江西理工大学 |
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| Abstract: |
| Based on distribution characteristics of thallium in secondary replacement solution of zinc sulphate solution in industry, thallium was removed from this solution by zinc powder replacement, zinc powder + activated carbon, zinc powder + potassium permanganate, and zinc powder + lead acetate, respectively. The results show that Tl removal rate of zinc powder + potassium permanganate is 85.83% under the optimum conditions including reaction temperature of 70 ℃, potassium permanganate dosage of 3 g, zinc powder dosage of 40 g, stirring speed of 300 r/min, and reaction time of 90 min. Removal rate of Tl of zinc powder + lead acetate is 93.89% under the optimum conditions including reaction temperature of 90 ℃, lead acetate dosage of 0.8 g, zinc powder dosage of 40 g, stirring speed of 300 r/min, and reaction time of 90 min. Combined with actual industrial production, it is recommended to remove thallium from secondary replacement solution by zinc powder + lead acetate. |
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