Gravity Separation & Concentration Methods

Gravity Separation & Concentration Methods

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Gold Recovery efficiency of various gravity separation techniques (2 replies)

usman hameed
1 year ago
usman hameed 1 year ago

We are dealing in gold washing/placer gold mining at the Northern side of Pakistan. Unfortunately, the placer mining industry has not been flourished in Pakistan yet. The use of primitive gold washing techniques i.e., panning is common. 

The gold recovery percentage of different gravity separation techniques is an important factor with which the illiterate person could be convinced to switch to the new alternatives/ interventions.

Kindly share the chart/ literature/ data depicting the gold recovery percentage of different gravity separation techniques including gold panning.

Thanks so much.

1 year ago
SmartDog 1 year ago

The recovery efficiencies of the various types of equipment is dependent on many different factors.  These include size distribution of the material, the physical characteristics (density, shape, and such), and the feed rate versus equipment size.  I have set up a website that discusses many of these, see  in particular

1 year ago
(unknown) 1 year ago

In placer gold mines, gold usually exists in the form of single natural gold, and its density is generally greater than 16 tons/m3, which has a large difference with the density of gangue. Therefore, gravity separation is the most important, most effective and most economical way to select placer gold mines. Methods. But in vein gold, gravity separation is rarely used alone, and not as part of the combined gold extraction process. Generally, in the grinding and grading circuit, a jig and spiral chute are used in conjunction with a shaker to recover and cleavage in advance. Coarse single gold, to facilitate subsequent flotation and cyanidation operations, and obtain qualified gold concentrate.

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