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| Study of Acid Leaching for Superalloy Scrap |
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Received:November 03, 2013
Revised:November 05, 2013
Accepted:November 08, 2013
Published Online:April 22, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.05.001 |
| KeyWord:superalloy scrap; oxidizing leaching; leaching rate; Ni; Co; Re |
| Author | Institution |
| WANG Jingkun |
西北有色金属研究院 陕西 西安 |
| Meng Hanqi |
西北有色金属研究院 陕西 西安 |
| Wang Zhijun |
西北有色金属研究院 陕西 西安 |
| Guo Rui |
西北有色金属研究院 陕西 西安 |
| Li Jin |
西北有色金属研究院 陕西 西安 |
| Ma Guang |
西北有色金属研究院 陕西 西安 |
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| Abstract: |
| Ni, Co, Re and other metals were leached from superalloy scrap by oxidizing leaching with H2O2 as oxidant, and W, Hf were enriched in slag. The results show that the leaching rate of Ni, Co and Re is all 99% above under the optimum conditions including alloy powder of 100 g, particle size of 0.075~0.100 mm, hydrochloric acid concentration of 6 mol/L, ratio of liquid to solid of 6∶1, dosage of H2O2 (30% mass concentration) of 200 mL, temperature of 85 ℃, and leaching duration of 3 h. |
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