By John Marsden
ISBN-10: 0873352742
ISBN-13: 9780873352741
The Chemistry of Gold Extraction presents the huge base of information now required via all these operating within the gold extraction and gold processing industries. The ebook bridges the space among examine and by way of emphasizing the sensible functions of chemical rules and methods. The technical reference comprises in-depth discussions on historic advancements; ore deposits and technique mineralogy; �Read more...
summary: The Chemistry of Gold Extraction presents the huge base of data now required through all these operating within the gold extraction and gold processing industries. The booklet bridges the distance among learn and via emphasizing the sensible functions of chemical rules and methods. The technical reference comprises in-depth discussions on old advancements; ore deposits and approach mineralogy; approach choice; rules of gold hydrometallurgy; oxidative pretreatment; leaching; answer purification and focus; restoration; floor chemical tools; refining; effluent t
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Sample text
By 1922 the practice of direct amalgamation of stamp mill product was replaced by the use of corduroy strakes, which preconcentrated the amalgamation feed and significantly reduced the amount of mercury that was used. Encouraged largely for health and security reasons, this change led to many other advances in gravity concentration techniques within the grinding circuit, such as the use of jigs, Johnson drums, and shaking tables for the recovery of coarse gold. During the late 1980s, about 20% of South African gold was produced from gravity concentrates.
16 THE CHEMISTRY OF GOLD EXTRACTION Wiluna, Youanmi, and Beaconsfield (all in Australia), at Tamboraque (Peru), and Laizhou (Shandong, China). The motivation for the continued development of bio-oxidation processes for sulfide concentrate treatment is the potential cost savings over pressure oxidation and the considerable environmental advantages over roasting. 7). Significant improvements in gas scrubbing and cleaning technology were made in the United States, which brought low-cost roasting back into favor in the late 1980s.
Heinen, McClelland, and Lindstrom develop agglomeration process for heap leaching of clay ores. Guay patents preaeration and chlorination. Rand Mines Mining and Milling, Simmergo, Ergo, and JMS-OFS build large-scale tailings retreatment plants using CIP in South Africa. First (acidic) pressure oxidation plant commissioned at Homestake McLaughlin (United States). Sao Bento (Brazil) starts pressure oxidation plant. Start-up of concentrate biological oxidation plant in Fairview (South Africa). First (nonacidic) pressure oxidation plant for gold ore, in Mercur (United States).
Chemistry of Gold Extraction by John Marsden
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