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Gravity Separation

Gravity Separation of Coal

Gravity separation of coal is a process that uses gravity charges to separate crushed particles of material. An industrial process used to separate large amounts of material particles, gravity separating is most often used in the process of sorting mineral ore. This process can help remove valuable material from ore, or it can help remove foreign material to purify a substance. In mining, the process of crushing mining ore into particles for the purpose of separating minerals is called beneficiation.

gravity separation

Generally, gravity charges are used to attract or repel differently charged material. When gravity separation uses the force of attraction to sort particles, conducting particles stick to an oppositely-charged object, such as a metal drum, thereby separating them from the particle mixture. When this type of beneficiation uses repelling force, it is normally employed to change the trajectory of falling objects to sort them into different places. This way, when a mixture of particles falls past a repelling object, the particles with the correct charge fall away from the other particles when they are repelled by the similarly charged object.


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