Yunnan zhenyuan gold concentrate bacterial oxidation roasting oxidation + + calc
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The flotation gold concentrate oxidation pretreatment and cyanidation was studied. Because of the harmful ore composition complex, gold most submicroscopic gold and pyrite, and the arsenic and carbon containing fine. The roasting oxidation pretreatment technology, bacterial pre oxidation process and bacterial pre oxidation and Oxidation Roasting Pretreatment Process in which the combination process is reasonable, compared with a series of tests, found that the use of bacterial pre oxidation roasting oxidation pretreatment process, the index is obviously superior to the other pretreatment process, the index: gold flotation concentrate grade is 37.87g/t; the grinding fineness (-320 mesh) is 86.4%; four days of bacterial oxidation, the oxidation slag grade 50.50g/t; calcined at the temperature of 700 DEG C, roasting calcine grade for 1H; 59.30g/t; cyanide leaching recovery rate was over 97.40%. The leaching rate of ideal, higher than the contract of attorney of cyanidation leaching rate of recovery is 95% requirements. The test is successful, for the treatment of arsenic containing fine carbon and pyrite, wrapped in gold and other refractory gold ore has opened up a new way to effective.
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Address：No.18 Xuefu West Road，High-tech District，Yantai，Shandong，China
Tel：86-535-6857870（Operation） 86-535-6857866（Office）
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Mailbox：ytjinjian@126.com
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