Extraction of Copper from Chalcopyrite Concentrates without Sulfuric Acid Generation via Chlorination - II. Selective Oxidation of Chlorinated Products

Iwasaki, Iwao
Tamagawa, T.
Fu, N. X
Kobayashi, M
1999
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Extraction of Copper from Chalcopyrite Concentrates without Sulfuric Acid Generation via Chlorination - II. Selective Oxidation of Chlorinated Products

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1999

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University of Minnesota Duluth

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Technical Report

Abstract

A low temperature chlorination-selective oxidation, followed by aqueous chloride leaching and SX-EW for producing electrolytic copper, elemental sulfur and ferric oxide was investigated for hydrometallurgical processing of a chalcopyrite concentrate. In this article, the selective oxidation phase of the process is described. The selective oxidation requires a temperature well above the CuCl-FeCl3 eutectic points. The test procedure was developed with a batch reactor and then tested with a continuous reactor. The process was initiated by adding small amounts of chlorinated samples to a fluidizing bed of dead-roasted sulfide concentrate micro-pellets. The selectively oxidized samples thus prepared were shown to fully dissolve copper, while virtually all the iron remained undissolved.

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Technical Reports
Minerals & Metallurgy

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NRRI Technical Report;NRRI/TR-99-42

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Iwasaki, Iwao; Tamagawa, T.; Fu, N. X; Kobayashi, M. (1999). Extraction of Copper from Chalcopyrite Concentrates without Sulfuric Acid Generation via Chlorination - II. Selective Oxidation of Chlorinated Products. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/187121.

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