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Copper processing method

A copper source, copper sulfide technology, applied in the field of processing ore or source materials to recover copper or suitable copper compounds from them, which can solve the problems of increased operating costs of copper production, increased impact of greenhouse gases, increased demand for electrical energy, etc.

Inactive Publication Date: 2016-08-17
THE UNIV OF QUEENSLAND
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Problems solved by technology

[0021] Clearly, as using the conventional pyrometallurgical and hydrometallurgical routes, the operating costs of copper production will increase due to lower average ore grades, and the electrical energy demand will increase, as will the greenhouse gas impact if fossil fuels are used to generate the energy used
Furthermore, arsenic is increasingly becoming a more serious problem in copper processing due to the increasing concentration of arsenic in numerous copper ores and on the other hand the stricter restrictions on its environmental release

Method used

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Embodiment Construction

[0044] The present invention was at least partially foreseen upon the discovery that a copper concentrate could be precipitated from an aqueous acid leach solution suitable for direct feeding to a smelting or conversion step for thermal decomposition to provide a copper product. The use of lime and / or limestone has been found to be particularly useful in precipitating copper concentrates, which can be advantageously incorporated into smelting / conversion operations. This scheme allows the integration of the early steps of the hydrometallurgical scheme with the downstream steps of the pyrometallurgical scheme, enabling the efficient processing of a wider range of copper ore types and ore grades. Furthermore, it has been shown that copper sulfide ores or concentrates can advantageously be converted to a form that provides the desired solution from which copper concentrates can be precipitated by subjecting the ores or concentrates to oxidative calcination prior to leaching. This ...

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Abstract

A method of processing a copper-containing source material is provided whereby an aqueous acidic leach solution of the copper-containing source material is formed and then contacted with a pH increasing agent to thereby cause the precipitation of a copper-containing intermediate. The copper- containing intermediate can then be collected and exposed to a high temperature treatment, such as would be encountered in smelter or converter operations.

Description

technical field [0001] The present invention relates to a method of processing copper-bearing ore or other source material. In particular, the invention relates to a method of processing ore or source material to recover copper or suitable copper compounds therefrom. Background technique [0002] Any reference herein to background art is not to be construed as an admission that such prior art forms common general knowledge in Australia or elsewhere. [0003] Copper is a high-value commodity as demand for production increases due in part to the rapid development of economies such as India and China. At the same time, the identification of new high-grade deposits is becoming increasingly challenging. [0004] Most copper is extracted from its ore in one of two ways. Most copper sulphide ores are refined by flotation and processed by pyrometallurgical routes, while other copper ores, such as copper oxide ores and some lower grade sulphide ores, are processed by hydrosmelting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/00
CPCC22B15/0086C22B15/0089C25C1/12Y02P10/20C22B1/02C22B1/248C22B3/065C22B3/08C22B3/10C22B3/44C22B15/0015C22B15/0052C22B15/0069C22B15/0071C22B15/0073
Inventor W·霍克J·沃恩彼得·海斯伊夫冈尼·贾克
Owner THE UNIV OF QUEENSLAND
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