Iron Recovery by Two-Stage Roasting the Gold-Bearing Pyrite Concentrate and Gold-Leaching from the Pyrite Cinder by Thiourea
2014 ◽
Vol 962-965
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pp. 784-788
Keyword(s):
Pyrite cinders, which are the waste products of sulphuric acid manufacturing plants, contain hazardous but valuable heavy metals. This passage introduced that iron recovery by two-stage roasting the pyrite concentrate and gold-leaching from the pyrite cinder by thiourea. After re-floating and two-stage roasting of the gold-bearing low-grade pyrite concentrate, the final cinder contains about 0.056% As and 61% Fe and high grade gold and silver. The thiourea gold-leaching experiment for the pyrite cinder shows the gold-leaching rate is up to 90.4% in the case of grinding fineness of 60%-0.074mm, pH = 1~2, R=1:2, thiourea dosage of 10g / L, ferric sulfate dosage of 3g / L, leaching time of 6h.
2012 ◽
Vol 610-613
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pp. 81-85
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2013 ◽
Vol 303-306
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pp. 2473-2476
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2017 ◽
Vol 16
(3)
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Keyword(s):
2018 ◽
Vol 170
◽
pp. 486-495
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2011 ◽
Vol 47
(9)
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pp. 833-840
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2009 ◽
Vol 29
(11-12)
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pp. 2257-2264
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Keyword(s):
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2018 ◽
Vol 25
(9)
◽
pp. 981-989
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2009 ◽
Vol 71-73
◽
pp. 409-412
Keyword(s):