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| Translation and Dissolving Behavior of Iron and Sulfur in Oxygen Pressure Water Leaching of Pyrite from Ni-Mo Ore |
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Received:March 18, 2019
Revised:March 18, 2019
Accepted:March 22, 2019
Published Online:July 15, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.08.003 |
| KeyWord:pyrite; oxygen pressure water leaching; dissolution behavior; translation |
| Author | Institution |
| ZHU Bei-ping |
云锡文山锌铟冶炼有限公司 |
| DENG Zhi-gan |
昆明理工大学 |
| WEI Chang |
昆明理工大学 |
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| Abstract: |
| Aiming at conversion behavior of pyrite by oxygen pressure leaching, pyrite in Ni-Mo ore is taken as the research object to investigate effects of initial sulfuric acid solution, temperature, oxygen partial pressure, and particle size on oxidation translation behavior of pyrite under pressure filed. The results show that iron exists in solution in form of ions with small part of element iron remaining in form of hematite and iron jarosite in residue during whole reaction. Sulfur exists in solution in form of sulfate and a small amount of elemental sulfur come into shape in residue during whole reaction. Under the reaction conditions with addition of initial acid, acid consumption is bigger than acid formation in initial stage of reaction, while in later reaction the amount of acid produced is more than the amount of acid consumed. Acid is produced without addition of initial acid. |
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