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Gravity Separation Method Gravity separation method is a traditional methods for treatment of tungsten, tin, gold ore, especially when dealing with gold dust, sand tin. In dealing with rare metals (niobium, tantalum, titanium, zirconium) of the placer application is also very common. Re-election is also used to sorting the weak magnetic iron ore, manganese ore The application of Gravity separation method: Gravity separation method is useful for re-election deal with the gangue minerals with large density difference between the ore and other raw materials. It is a effective way to dealing with Coarse-grained, medium-and fine-grained ore (generally limit is greater than 25 mm, 25 “2 mm, 2 ~ O.1 mm), but the efficiency is not high when in dealing with fine mineral mud (less than 0.1 mm), the flow of modern film processing equipment can be effectively recycled to the 20-30 micron grain size, centrifugal concentrator to 10 microns can be. Gravity separation method in non-metallic mineral processing industry has also been developed in recent years, mainly used for treatment of asbestos, diamond, kaolin, apatite, pyrite and other minerals. In the election of copper, lead, zinc, antimony, mercury sulfide ore flotation plant, often used method of gravity concentration for primary election. Gravity separation method usually combined with other beneficiation process in the main election process, to select out the Concentrates or tailings in the state of Coarse-grained in advance. This will help reduce production costs and metal loss. The Gravity separation method is always a priority, when there a variety of processing ore methods. Gravity separation method must conduct in certain fluid media, Medium usually by water, Also use medium by air or heavy-medium (heavy liquid or dense medium). Media moved in a certain way inside separation equipment. Mineral grain begin loose with the effect of Medium buoyancy and hydrodynamic, and then to press the density (and sometimes by size) stratified. Layered mineral particles affect the nature of the process is its density, size, and minor shape factors.