Selective leaching experiments of chalcopyrite or pyrite from copper concentrate with some enrichment cultures

Akira Kounosu; Tadashi Chida; Noboru Sakai; Toshikazu Shiratori; Chihiro Inoue; Junzo Shimoiizaka

doi:10.2473/shigentosozai1953.104.1209_789

Selective leaching experiments of chalcopyrite or pyrite from copper concentrate with some enrichment cultures

Akira Kounosu, Tadashi Chida, Noboru Sakai, Toshikazu Shiratori, Chihiro Inoue, Junzo Shimoiizaka

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-review

Abstract

The copper ore used was copper sulfide concentrate. The energy source of cultivation was sulfur or ferrous sulfate. The leaching of the copper ore with S° or Fe²⁺ enrichment culture was carried out under the condition of pH 2 or less. For the selective bacterio leaching of CuFeS₂, it is necessary to feed the ore particle with oxygen and to control Eh value in the range from 0.6v to 0.7v. In leaching with feeding little oxygen, the electrochemical leaching is decreased and FeS₂ is leached. This phenomenon is explained on the assumption that oxygen is taken away from the surface by the Fe²⁺ enrichment culture.

Original language	English
Pages (from-to)	789-794
Number of pages	6
Journal	Nihon Kogyokaishi
Volume	104
Issue number	1209
DOIs	https://doi.org/10.2473/shigentosozai1953.104.1209_789
Publication status	Published - 1988

ASJC Scopus subject areas

Engineering(all)

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10.2473/shigentosozai1953.104.1209_789

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abstract = "The copper ore used was copper sulfide concentrate. The energy source of cultivation was sulfur or ferrous sulfate. The leaching of the copper ore with S° or Fe2+ enrichment culture was carried out under the condition of pH 2 or less. For the selective bacterio leaching of CuFeS2, it is necessary to feed the ore particle with oxygen and to control Eh value in the range from 0.6v to 0.7v. In leaching with feeding little oxygen, the electrochemical leaching is decreased and FeS2 is leached. This phenomenon is explained on the assumption that oxygen is taken away from the surface by the Fe2+ enrichment culture.",

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T1 - Selective leaching experiments of chalcopyrite or pyrite from copper concentrate with some enrichment cultures

AU - Kounosu, Akira

AU - Chida, Tadashi

AU - Sakai, Noboru

AU - Shiratori, Toshikazu

AU - Inoue, Chihiro

AU - Shimoiizaka, Junzo

PY - 1988

Y1 - 1988

N2 - The copper ore used was copper sulfide concentrate. The energy source of cultivation was sulfur or ferrous sulfate. The leaching of the copper ore with S° or Fe2+ enrichment culture was carried out under the condition of pH 2 or less. For the selective bacterio leaching of CuFeS2, it is necessary to feed the ore particle with oxygen and to control Eh value in the range from 0.6v to 0.7v. In leaching with feeding little oxygen, the electrochemical leaching is decreased and FeS2 is leached. This phenomenon is explained on the assumption that oxygen is taken away from the surface by the Fe2+ enrichment culture.

AB - The copper ore used was copper sulfide concentrate. The energy source of cultivation was sulfur or ferrous sulfate. The leaching of the copper ore with S° or Fe2+ enrichment culture was carried out under the condition of pH 2 or less. For the selective bacterio leaching of CuFeS2, it is necessary to feed the ore particle with oxygen and to control Eh value in the range from 0.6v to 0.7v. In leaching with feeding little oxygen, the electrochemical leaching is decreased and FeS2 is leached. This phenomenon is explained on the assumption that oxygen is taken away from the surface by the Fe2+ enrichment culture.

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Selective leaching experiments of chalcopyrite or pyrite from copper concentrate with some enrichment cultures

Abstract

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