Together with the cyanidation process invented in 1887, the Bayer process marks the birth of the modern field of hydrometallurgy.
12.
These pyrometallurgical or hydrometallurgical treatments are themselves usually followed by cyanidation and carbon adsorption techniques for final recovery of the gold.
13.
It is used for the recovery of fine particles of free gold, meaning gold that does not require gold cyanidation for recovery.
14.
Three attempts were made in the Romanian Parliament to ban gold cyanidation in Romania, none of which have been successful so far.
15.
Both the cyanidation itself, as well as the use of lead compounds in the process, are deemed controversial due to the compounds'toxic nature.
16.
Gold cyanide compounds ( MAu ( CN ) 2 ) are of some importance to gold cyanidation, a process for the extraction of gold from low-grade ore.
17.
In South Africa, Cordner-James notably formed the Gold Recovery Syndicate to acquire the patent rights to practice the MacArthur-Forrest gold cyanidation mining process in 1922.
18.
He studied the solubility of metallic gold, silver and copper in aqueous solutions of cyanide compounds and was the first to discover the Elsner�s Equation, the stoichiometry of gold cyanidation.
19.
In 2004 Barrick Gold is undertaking gold mining 43 km west at Lake Cowal through the process of in situ cyanide leaching, a variant of the controversial process of Gold cyanidation.
20.
Buildings and plant are relatively intact and the complete gold mining process from raising the ore to the final extraction of gold through the milling and cyanidation processes, can be traced through the physical evidence remaining on site.
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