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    Gravity concentrate from the Knelson Concentrator is transferred in batches to a ConSep ACACIA Model CS2000 intensive leaching reactor to dissolve most of the gravity recovered gold. A concentrated caustic and cyanide solution (30% w/w NaCN) is heated to around 35°C and circulated through the concentrate bed for ~12 hours.

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    Gravity Leaching of high grade gravity gold concentrates, such as Knelson Concentrates, with the ACACIA Reactor represents a new generation of concentrate treatment methods. The ACACIA Reactor is a complete packaged plant for the maximising of gold recoveries from gravity gold concentrates. This paper will introduce the process

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    Feb 08, 2017· As a result, over 85% of all gold extracted worldwide is produced by hydrometallurgical extraction with the use of cyanide. The gold mining sector uses approximately 66,000 tons of sodium cyanide

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