According to the movement form and operation purpose of the medium, gravity separation has the following technological methods:

(1) classification

⑵ Dense medium beneficiation

(3) jig beneficiation

(4) shaking table beneficiation

5] chute beneficiation

[6] Spiral mineral processing

Primary centrifugal beneficiation

air cleaning

Levies ore washing

Classification and ore washing are separation operations according to particle size, which are often used for ore preparation before selection. Other processes are substantive sorting operations, which will be introduced in this paper.

The difficulty of ore gravity separation mainly depends on the density difference between minerals, which can be judged by gravity separation washability criterion e.