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    Liquid–liquid extraction (LLE), also known as solvent extraction and partitioning, is a method to separate compounds or metal complexes, based on their relative solubilities in two different immiscible liquids, usually water (polar) and an organic solvent (non-polar). There is a net transfer of one or more species from one liquid into another liquid phase, generally from aqueous to organic.

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    Since it is common for the copper solvent extraction plant to supply feed electrolyte to an electrowinning plant, it is useful to combine the operating costs for the two plants when comparing costs of copper recovery by solvent extraction techniques with those for cementation.

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    Case Study: Copper solvent extraction fires

    The first two commercial copper solvent extraction (CuSX) plants were small-scale plants built in Arizona in the late 1960s. The plants were built to treat heap leach and dump leach solutions, respectively, and to produce 5,500-6,500 short tons per annum (STPA) of cathode copper.

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    Carbonate concentrates are a relatively minor product produced from copper cementation plants, typically as the end-stage of a heap-leach operation. Such carbonate concentrates can be treated by a solvent extraction and electrowinning (SX-EW) plant or smelted.

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    Solvent Extraction - an overview | ScienceDirect Topics

    Solvent extraction is a relatively new technology compared to other unit operations such as distillation and absorption. The first large-scale industrial solvent extraction plant was built in 1942 by Mallinckrodt Chemical Company for production of ton amounts of uranium by selective extraction of uranyl nitrate by ether from aqueous solutions.

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    Copper extraction - Wikipedia

    Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.

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