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| Atmospheric Acid Leaching of Nickel and Cobalt from Nickel-base Alloy Scrap |
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Received:February 22, 2014
Revised:February 27, 2014
Accepted:February 28, 2014
Published Online:July 21, 2014
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| DOI：doi：10.3969/j.issn.1007-7545.2014.08.002 |
| KeyWord:nickel-base alloy; atmospheric acid leaching; Ni; Co; recovery |
| Author | Institution |
| Wang Zhijun |
西北有色金属研究院 陕西 西安 |
| Wang Jingkun |
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 |
| Chen Kunkun |
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: |
| Nickel and cobalt were leached from waste nickel-base alloy scrap by atmospheric acid leaching with sodium chlorate as oxidant, and tungsten, molybdenum and tantalum were enriched in residue. The results show that nickel and cobalt leaching rates are both 99% above under the optimum leaching conditions including particle size of waste alloy scrap of 0.075~0.100 mm, concentration of sulfuric acid of 4.5 mol/L, ratio of liquid to solid of 8∶1, dosage of sodium chlorate of 2.0 g (2% of waste alloy), leaching time of 2.5 h, and temperature of (85±3)℃. |
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