reactions of ore dressing of gold

reactions of ore dressing of gold

Ore Dressing Methods Metallurgist amp; Mineral Processing Engineer

The fact that a product of high value and small bulk can be produced at a gold mine, often by relatively simple milling processes, has made it possible to operate gold mines successfully in remote and inhospitable regions where high costs of transportation, fuel, and power would make it impossible to exploit profitably base metal ores of equal doll...

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In the milling of gold ores, as with other kinds of ores, the treatment that will give the best metallurgical and economic results in any particular instance is determined primarily by the character of the ore, although other factors previously mentioned must be considered also. The principal ore characteristics that govern the selection of the mil...

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There are two principal methods of amalgamationplate amalgamation and barrel amalgamation. In plate amalgamation the ore is crushed wet in stamp mills or ground in ball mills and the resulting pulp flows over copper plates , which are coated with amalgam and mercury. Particles of free gold and silver coming in contact with the merc...

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Concentration is employed for the purpose of segregating the gold in a product of relatively small bulk for direct shipment to a smelter or for further treatment in the mill. For many years gravity concentration was virtually the only concentrating method employed in gold mills, but in recent years flotation methods have been used widely, especiall...

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The cyanide process is based on the work of MacArthur and the Forrests and involves the leaching of gold and silver from alkaline pulps with dilute solutions of sodium or potassium cyanide, the filtering and clarification of the gold silver bearing solution, and precipitation of metals from solution. Oxygen is essential to the solut...

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The data in table 57 have been obtained from various sources as noted. In view of the frequent changes in practice that take place in most mills due to changes in ore characteristics, in methods and equipment brought about by research and improved machines, and increases or decreases in capacity, these data should be understood to apply specificall...

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