Initial concentration techniques included hand-sorting and gravity concentration.
2.
Dense Media Separation and Gravity Concentration are two examples of standard Sepro process modules.
3.
It was used to recover a sphalerite concentrate from tailings, produced using gravity concentration.
4.
It is necessary to determine the suitability of a gravity concentration process before it is employed for concentration of an ore.
5.
A "'Knelson concentrator "'is a type of gravity concentration apparatus, predominantly used in the gold mining industry.
6.
Although concentration criteria is a useful rule of thumb when predicting amenability to gravity concentration, factors such as particle shape and relative concentration of heavy and light particles can dramatically affect separation efficiency in practice.
7.
Copper flotation, which had been successfully used in the United States since 1912, achieved a recovery rate 20 % higher than gravity concentration, and this contributed to the recession of metal prices in the 1920s.
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