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Gold extraction of 90 pct was obtained by electrolysis when 275 lb of ore was treated at 200 amp for 7 hours in an 8- to 10-pct salt solution. Power consumption was in the range of 60 kwhr per ton. Author: Publisher: ISBN: UOM:39015078526269. Category: Extraction (Chemistry) Page: 20.

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Jan 01, 2006 The Chemistry of Gold Extraction. January 2006; Authors: Download citation. 5,6,10−12 Cyanidation is a Hg-free alternative effective in extracting gold with up to 90% efficiency.

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Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold nuggets and flakes. Placer mining techniques since the mid to late 20th century have generally only

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Gold extraction of 90 pct was achieved by cyanidation of carbonaceous ore that had been pretreated with 20 lb per ton sodium hypochlorite at 50° C for 4 hours. Similarly, pretreatment of the ore pulp with 35 lb chlorine per ton at 24° to 30° C and 15 hours reaction time resulted in 89-pct gold extraction by subsequent cyaanidation.

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[randpic] Download [PDF] The Chemistry Of Gold Extraction Free Gold extraction of 90 pct was obtained by electrolysis when 275 lb of ore was treat

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