ARV 7.04% 7.6¢ artemis resources limited

Critical commodities present mostly as by– or co–products from...

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    Critical commodities present mostly as by– or co–products from the processing of major commodities

    [1 Co (from Cu–Co deposits – sulphide ores)
    Copper–Co concentrates produced by flotation are roasted. The resulting calcine is leached, with Cu won using electrowinning and, after impurities are removed from the leachate, Co is precipitated as a hydroxide.


    Critical commodities present mostly in mineral systems related to mafic–ultramafic magmatism

    [2 Ni, Co and platinum– group elements (Ru, Rh, Pd, Os, Ir and Pt) in sulphide ores
    Flotation is used to produce Ni–Co and Cu concentrates from the ores. The concentrates are then smelted to produce metal–rich mattes, which are then leached to produce a leachate from which Ni and Co, and Cu are extracted by solvent extraction, electrowinning and/or H2 reduction. PGEs are also refined from the mattes using hydrometallurgical methods.

    [3 Ni and Co in lateritic ores
    Saprolite ores are smelted to produce ferronickel, whereas limonitic ores are leached at high temperature and pressure, with Ni and Co recovered by solvent extraction, electrowinning and/or H2 reduction.
 
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