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UPGRADING NICKELIFEROUS PYRRHOTITE CONCENTRATES BY AQUEOUS OXIDATION COUPLED WITH PRECIPITATION AND FLOTATION
Alternative TitleInt. J. Miner. Process.
Deng, T.
1995
Source PublicationInternational Journal of Mineral Processing
Issue1-2Pages:91-98
AbstractAs pyrrhotite either dilutes nickel concentrates when recovered or causes significant metals loss and potential environmental harassments if discarded, production of separate pyrrhotite concentrate was thought as a reasonable alternative; however, processing it presents a challenge. A new process was studied to upgrade nickeliferous pyrrhotite concentrates using aqueous pressure oxidation under mild conditions, followed by sulfide precipitation and flotation. The effects of operation parameters such as oxygen pressure, temperature, initial acidity, retention time and concentrate composition were investigated. Pyrrhotite was found to be readily converted into iron oxide. The metal values present in the concentrate, principally nickel and copper, were dissolved in part as pyrrhotite was oxidized, then precipitated from the pulp as sulfides and finally recovered by flotation as a much higher grade concentrate with unreacted sulfide minerals and the produced elemental sulfur together. The pyrrhotite reporting to the leach residue as iron oxide was thus rejected in the flotation tailings.
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Indexed BySCI
Language英语
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6102
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Deng, T.. UPGRADING NICKELIFEROUS PYRRHOTITE CONCENTRATES BY AQUEOUS OXIDATION COUPLED WITH PRECIPITATION AND FLOTATION[J]. International Journal of Mineral Processing,1995(1-2):91-98.
APA Deng, T..(1995).UPGRADING NICKELIFEROUS PYRRHOTITE CONCENTRATES BY AQUEOUS OXIDATION COUPLED WITH PRECIPITATION AND FLOTATION.International Journal of Mineral Processing(1-2),91-98.
MLA Deng, T.."UPGRADING NICKELIFEROUS PYRRHOTITE CONCENTRATES BY AQUEOUS OXIDATION COUPLED WITH PRECIPITATION AND FLOTATION".International Journal of Mineral Processing .1-2(1995):91-98.
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