Mineral containing gold ore is often up to the associated minerals. The role of different iron minerals in cyanide solutions is also different.
In the cyanide leaching process, iron oxide minerals such as hematite, magnetite, goethite, and siderite in the ore are not dissolved by the oxide solution. The cyanide solution reacts with pyrite and its oxides.
The oxidation products of pyrite and pyrite can react with cyanide to increase the consumption of cyanide.
The oxidation products of pyrrhotite also react with cyanide to increase cyanide consumption.
When grinding, the lining and the steel ball wear a large amount of iron powder. Especially when cyanide is added during the grinding operation, the fresh iron powder reacts with cyanide to increase the consumption of cyanide.
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