
THE ENVIRONMENTAL RISKS RESULTS IN BAYER HYDROMETALLURGICAL TECHNOLOGY
(Stef92 Technology, 2015-6-20, Lidia Cristea)
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(Stef92 Technology, 2015-6-20, Lidia Cristea)

(Stef92 Technology, 2015-6-20, Lidia Cristea)

(Stef92 Technology, 2014-6-20, Lidia Cristea)

(Stef92 Technology, 2014-6-20, Lidia Cristea)

(Stef92 Technology, 2013-6-20, Lidia Cristea)

(Stef92 Technology, 2012-6-18, Lidia Cristea)

(Stef92 Technology, 2011-06-20, Lidia Cristea)
Gold is a precious metal extracted and used since ancient times. The present paper analyzes the properties and characteristics of gold in terms of physical-mechanical properties and the process of its extraction from ore. After extraction of tons of low grade gol d ore using sodium cyanide (NaCN) are obtained two grams of gold and there are left mining waste dumps containing 25-50% gold. The technological process of cyanide not only shows a low efficiency of extraction, but it also brings great risks in terms of e...