Influence of Accompanying Minerals
Nature Gangue On Top of the Gold Mineral Treatment
In many of the typical characteristics of gold, certain minerals present in the mineral: sulphurs, oxides, minerals of the gangue which have an important influence in the establishment of a process of treatment and in the values of the parameters of its function.
The knowledge of the mineralogy of the minerals of gold is therefore indispensable, particularly in the case in which the habitual techniques of base do not conduct to satisfactory results.
The Minerals of Copper, Lead and Zinc
The old experimentations of Leaver and Wulf have shown that the most part of the minerals which are carriers of these elements were more or less soluble in the cyanide solutions. The dissolution of those minerals drags an excessive consumption of cyanide. Dorro-Bosqui indicates a molar efficiency, copper over cyanide of 4, must be maintained in the solution to conserve its dissolving power facing gold.A pre-treatment of the mineral in an upward direction of the Cyanidation will very often be necessary to extenuate this inconvenient.
In the case of the base metals are extracted by the same mineral, the gold is often recuperated after the pyrometallurgic treatment of the concentrates of those metals (40% of the cases of the production of The United States).
|
