what's happening in copper hydromet - ALTA Metallurgical Services
what's happening in copper hydromet - ALTA Metallurgical Services
what's happening in copper hydromet - ALTA Metallurgical Services
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HYDROMET PROCESSES FOR SULPHIDE CONCENTRATES<br />
• Numerous processes have been tested over many years but only<br />
a few have been commercialized, with limited success.<br />
• Current processes under development <strong>in</strong>volve:<br />
– medium and high temperature pressure oxidation<br />
– atmospheric tank bio-oxidation<br />
– atmospheric tank galvanic leach<strong>in</strong>g<br />
– chloride leach<strong>in</strong>g.<br />
• Of these:<br />
– high temperature pressure oxidation has been commercialized<br />
– medium temperature pressure oxidation and tank bio-oxidation<br />
have reached small scale commercial or semi-commercial level<br />
– galvanic leach<strong>in</strong>g has reached pilot plant scale<br />
– chloride leach<strong>in</strong>g has reached pilot scale (though a<br />
commercial operation has been operated <strong>in</strong> the past).<br />
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