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why is zinc added to gold cyanide

Some months since the attention of the author was directed to certain statements to the effect that the goldcontents of foul or extremely dilute cyanidesolutions could not be effectively precipitated in practice by the usual zinc cementation of gold called the “zincmethod” Such statements caused all the greater surprise because it is well known that this difficulty is not encountered ... As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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