Chemistry Of Gold Extraction Hotfile

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    chemical use in mining has changed dramatically over the last 20 years (e.g., cyanide "heap leaching" of gold has become widespread), creating new environmental and human health challenges and leading to a resurgence of mining

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    these processes can all occur in holding pools in which the slurry after gold extraction is put into. some chemical processes can . also be used. one of these is the cyanisorb process which is used at a mine near waihi. this takes the. slurry and reacts it at low ph forming hydrogen cyanide which can be converted back to cyanide ion for reuse later.

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