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Cyanide Strength For Gold Heap Leaching Process Grinding Gold Plated Scap

Jun 24, 2015 Gold and Silver Leaching. For Gold and Silver, the most common leachants used are Na or K cyanides in the presence of oxygen, Thiourea NH 2. CS.NH 2, also in the presence of oxygen, or Ammonium polysulphide NH 4 2 Sx, especially for Gold. Optimum physical conditions for cyanidation are Maximum temperature of 85 o C, Operating ph range of 9.5 11.5

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