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| Electrodeposition of Fe-Ni Alloy in Waste Catalyst Leaching Solution |
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Received:April 11, 2022
Revised:April 19, 2022
Accepted:April 21, 2022
Published Online:July 13, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.08.015 |
| KeyWord:spent catalyst; electrodeposition; Fe-Ni alloy; current efficiency; partial current density |
| Author | Institution |
| FENG Zhen-wu |
东北大学冶金学院 |
| LU Dian-kun |
东北大学冶金学院 |
| ZOU Xiao-ping |
矿冶科技集团有限公司 |
| XIE Feng |
东北大学冶金学院 |
| FU Yan |
东北大学冶金学院 |
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| Abstract: |
| Based on sulfuric acid leaching solution of spent synthetic diamond catalyst, the DC static electrolytic deposition of Fe-Ni alloy was carried out under 1 200 C constant charge by using L16(45) orthogonal experimental scheme. Effects of process parameters on electrodeposition current efficiency, nickel mass fraction and partial current density of Ni and Fe precipitation were studied, and the optimal process parameters were obtained by taking current efficiency as the main index. The results show that the order of influencing factors on current efficiency is pH value > current density > temperature > saccharin sodium concentration > thiourea concentration. The optimum process parameters include average current density of 500 A/m2, temperature of 45 ℃, pH value of 3.55, sodium saccharin concentration of 3 g/L, and thiourea concentration of 0.15 g/L. The results of optimal conditions verify the reliability of orthogonal test result. |
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