Carbon In Pulp Technology For The Extraction Of Gold
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Extraction of Gold from Carbonaceous Ores
Author | : |
Publisher | : |
Total Pages | : 28 |
Release | : 1972 |
Genre | : Extraction (Chemistry) |
ISBN | : |
Oxidation procedures based on the chlorine-hypochlorite system were investigated for improving gold recovery from carbonaceous gold ores. The oxidation pretreatment prior to cyanidation was accomplished by (1) addition of sodium hypochlorite to ore pulp, (2) by addition of chlorine to ore pulp, and (3) by generation of hypochlorite in situ by electrolysis of a brine solution used to pulp the ore. 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. Concomitant studies showed that electrolyzing the pulp prepared with a brine solution was equally as effective as electrolyzing hypochlorite and chlorine for oxidizing carbonaceous ore constituents that are deleterious to cyanidation. 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.
The Carbon-in-pulp Gold Recovery Process : a Major Breakthrough
Author | : |
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Total Pages | : |
Release | : 1979 |
Genre | : |
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The carbon-in-pulp process, which has been described as the most revolutionary gold recovery development since the cyanide process, could have extremely significant implications for the gold mining industry. This paper summarizes the state of the art.
Carbon-in-pulp and Gold Processing Technology
Author | : Jim Avraamides |
Publisher | : |
Total Pages | : |
Release | : 1989 |
Genre | : Carbon, Activated |
ISBN | : |
The Chemistry of Gold Extraction
Author | : John Marsden |
Publisher | : Society for Mining Metallurgy & Exploration |
Total Pages | : 688 |
Release | : 2006 |
Genre | : Science |
ISBN | : |
Extensively revised and updated, this edition provides the broad base of knowledge required by all working in the gold extraction and gold processing industries. It bridges the gap between research and industry by emphasizing practical applications of chemical principles and techniques.