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Cuban Chain Transformation: From 10K to 14K Gold!

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See how we make a 14K Cuban link chain by melting down a 10-Karat gold Cuban chain and mixing it with the correct amount of 24K gold plus other metals.

YSelf

The cyanidation process is still the most widely used method on an industrial scale in the recovery of gold and silver from ores and concentrates. However, the difficulties encountered in the processing of refractory ores, the concerns caused by cyanide as a toxic substance, and the rules that must be followed in the discharge of cyanide residues to the environment are the disadvantages of the process. As a result of these; General attention has been focused on the availability of alternative reagents that are less toxic or non-toxic than cyanide. In studies conducted for this purpose, thiourea and its derivatives, thiosulfate, iodine-iodide, chlorine and ammonia constitute the main reagents tried as alternatives to cyanide. In this review, interaction mechanisms of reagents tried as an alternative to cyanide and ore, concentrate, etc. It is given in comparison with cyanidation, taking into account the studies made with natural materials.

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Construction & Machinery
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