The Acacia Reactor - Improving Gravity Recovery

CIM Vancouver 2002
Ish Grewal,
Abstract Effective gravity concentration circuits have been shown to improve overall gold recovery at numerous installations. While primary gravity recovery using centrifugal gravity concentrators, such as Knelsons, can be high, significant gold losses are realized in upgrading the gravity concentrates in the gold room. The Acacia reactor was developed to maximize gold recovery in gravity concentration circuit using an intensive cyanide leaching process. Additional benefits observed with the use of the Acacia Reactor were: increased security, reduced gold grade reporting to the primary cyclone overflow, reduced gold content in the comminution circulating load, reduced health hazards associated with calcining such as dust and sulfides containing arsenic, and improved daily metallurgical accounting. This paper discusses the development history and the operation of the Acacia reactor.
Keywords: Acacia Reactor, Gravity concentration, Intensive Cyandation, Gold Leaching, Knelson
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