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The Technological advance of gold concentrating at abroad In recent years

Jia Kuangui (Ma-Anshan Research Institute of Mine)  
A great advance of gold concentrating has been made at abroad in recent years.Broadly speaking, the advancemant can be broken into five respects, refractory gold ores,heap leaching,carbon-in-pulp technology, effluent treatment and alternative lixiviants. This paper formulates systematically the new technological contents,applied state, technological index and economical efficiency of each respect.
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