Gravity Concentration By Jigs Engineering Essay

Gravity Concentration By Jigs Engineering Essay Gravity concentration methods separate minerals of different specific gravity. They are used to treat a great variaty of materials [ranging from Au ( sp. gr. 19.3 ) to coal ( sp. gr. 1.3 ) ]. Gravity concentration methods remained, however the main concentrating methods for iron , tungsten, tin ores and coal. This methods are usually preferred to flotation due to its low cost . Minerals liberated at sizes above flotation range may be concentrated even more economically using gravity methods (also cause efficient dewatering due to decreased surface area.). The main principles of appliying this method is different size and shape of minerals having different specific gravity. This method can be applied at the range of 7.5 1.3. And, the advantages of this method are its simplicity, having high capacity and low cost. In order to apply gravity concentration method concentration criteria ( cc ) shoud be at optimum range. CC = dh df dl df CC >2.5 ( 74 micron ) CC