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| Nickel Sulphate Electrolyte Extraction Purified by M5640+P204+P507 |
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Received:July 04, 2011
Published Online:December 06, 2011
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| DOI：doi：10.3969/j.issn.1007-7545.2011.12.005 |
| KeyWord:Nickel electrolyte；Extraction；M5640；P204；P507 |
| Author | Institution |
| LI Xue-peng |
云南锡业集团（控股）有限责任公司研究设计院 |
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| Abstract: |
| The extraction purification of nickel sulphate electrolyte was studied. M5640 was used to remove Cu2+. The extraction rate was higher than 99.83% and the content of Cu2+ as lower than 0.1 mg/L on the conditions including pH =3.0, O/A=1/1, volume concentration of M5640 to be 15%, and the reaction time as 2 min. Then, P204 was used to remove other impurities. The conditions included pH =4.0, O/A=2/1, volume concentration of P204 to be 25%, and reaction time as 7 min. At last, raffinate was purified with P507 on the following conditions that 75% P507 was saponificated by sodium hydroxide solution, the concentration of Co2+ was increased to 4.19 g/L (Co/Ni=1/10), pH=4~5 and extraction series was 4. The final raffinate can satisfied the standard of 5N nickel. |
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