gravity concentration


Also found in: Medical.

gravity concentration

[′grav·əd·ē ‚käns·ən′trā·shən]
(engineering)
Any of various methods for separating a mixture of particles, such as minerals, based on the differences in density of the various species and on the resistance to relative motion exerted upon the particles by the fluid or semifluid medium in which separation takes place.
The separation of liquid-liquid dispersions based on settling out of the dense phase by gravity.
References in periodicals archive ?
The aim of this study is to evaluate the cleaning amenability of coal of selected areas of salt range through washability analysis and gravity concentration techniques including jigging, shaking table and spiral.
The manganese ore was tested for its susceptibility to beneficiation through gravity concentration magnetic separation and flotation techniques.
In October of 2012, Ireland successfully installed all of the gravity concentration equipment and determined the operating parameters for the concentration components of the on-site precious metals extraction circuit.
Flotation combined with gravity concentration can be used to recover 83% of the gold and 87% of the copper into saleable concentrates.
Unit processes will include primary jaw crushing; single-stage semi-autogenous grinding with recycle to produce an 80% passing 75-p grind size; gravity concentration and removal of coarse gold from the milling circuit recirculating load; pre-leach thickening; a leach/ carbon-in-leach circuit incorporating a leach tank and six carbon-in-leach tanks for gold adsorption; an elution circuit treating loaded carbon; electrowinning; and gold smelting to produce dore.
The outcome from the programme suggests the resource could be economically treated using standard Gravity Concentration / Carbon in leach (CIL) cyanidation technology.
Because of the high specific gravity of the tungsten minerals, they are amenable to gravity concentration methods.
In South Africa, the company has added to stockpiles, bringing the total stocks of materials for processing to 44,050 oz, equating to four years of current woodchip production capability, three years of gravity concentration capacity and three years of leach capacity.
This concentrate will pass through a gravity concentration circuit comprising a Knelson concentrator and a Gemini table to recover the free gold, before being reground to nominally 100% minus 75 microns and pumped to the flotation circuit.
The gravity concentration circuit has been fully commissioned, while testing of the leaching and resin extraction circuits are underway.
These results were achieved by testing a master composite representing mineralized material from the Meio and Serra zones of the Project using gravity concentration followed by carbon-in-leach (CIL) cyanidation of the gravity tails.
The synergistic effect of combining flotation with gravity concentration results in an outcome that cannot be achieved by either approach alone, according to the company.