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Gold(I) sulfide

Gold (I) sulfide is the inorganic compound with the formula Au2S. It is the principal sulfide of gold. It decomposes to gold metal and elemental sulfur, illustrating the "nobility" of gold.

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A Pretreatment of Refractory Gold Ores Containing Sulfide

In this study, a new method to improve gold extraction from sulfide bearing gold ores is proposed based on the model experiments using a mixture of gold powder and arsenopyrite-bearing sulfide (HAsBS) ore.

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Recovery of gold from sulfide refractory gold ore: Oxidation

Recovering gold from sulfide refractory gold ore has been an important guarantee for the sustainable development of gold industry, while there are many challenges in the treatment of sulfide refractory gold ore, such as environmental pollution and low gold recovery.

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A clean and efficient innovative technology for refractory

For high arsenic sulfide gold ore, a sufficient sulfur source (addition of pyrite or sulfur) could be supplemented, and then thermal activation pretreatment for thiosulfate generation. This alternative technology can prevent the volatilization of hazardous gases (SO 2 and As 2 O 3) and instead collect them as less harmful solids (S 8 and As 2 S ...

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Bio-oxidation of Gold from Refractory Sulfide Ores: A Journey

Small particles of gold, a metal of higher interest, are mostly found in a matrix of sulfide-based minerals and not affordably recovered with conventional approaches encompassing cyanidation, pyrometallurgy, extreme heating (roasting), oxidation of ore samples at high pressure.

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8 Types of Gold Ore

Gold sulfide ore is a rock gold ore with a chemical formula of Au 2 S. It is the principal sulfide of gold (usually pyrite ) and decomposes to gold metal and elemental sulfur, illustrating the "nobility" of gold.

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Gold Extraction from a Refractory Sulfide Concentrate by

In this study, we conducted experiments to characterize the effects on gold extraction of ores using a range of sodium cyanide concentrations (1–8 g/L), temperatures (40–75 °C), and oxygen pressures (0.5–1.1 MPa). Characterization of the ores showed that pyrite and quartz were the main minerals present in the concentrate.

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