roasting gold sulfides with lime

A fundamental study of the alkaline sulfide leaching of gold

Due to the increasing concerns over the emission of sulfur dioxide from roasting ... gold/silver leaching in a sulfide ... Leaching gold and silver by lime ...

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Patent US5074909 - Gold and silver recovery method - Google ...

Citing Patent Filing date Publication date Applicant Title; US5254320 * Dec 17, 1991: Oct 19, 1993: A. Ahlstrom Corporation: Method for roasting sulphide ores

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Such ores are often refractory because of their excessive content of metallic sulfides or ... 24 such as lime or soda ash ... roasting. Gold recovery ...

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Roasting (metallurgy) - Wikipedia, the free encyclopedia

Roasted gold ore from Cripple Creek, Colorado. ... leaving behind vesicular blebs of native gold. Roasting is a step of the processing of certain ores.

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roasting | metallurgy | Encyclopedia Britannica

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Gold and silver recovery method - Inco Limited

... minerals including roasting a concentrate of said sulfide and ... Gold and silver recovery method ... with increasing lime. Gold extraction ...

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Microwave roasting of a carbonaceous sulphidic gold concentrate

... between 10.5 and 11 using a saturated solution of lime. The gold in solution was determined using an ... roasting processes, the sulphide sulphur was ...

Gold extraction - Wikipedia, the free encyclopedia

Gold extraction or recovery from its ores may require a ... roasting, and pressure oxidation ... concentration of the sulfides results in concentration of gold ...

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US Patent # 5,074,909. Gold and silver recovery method ...

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ECONOMICS OF REFRACTORY GOLD ORE PROCESSES

Refractory gold ore pretreatment processes ... roasting and bacterial oxidation with or without ... especially if less than complete oxidation of the sulfides will

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