Finally,the most reasonable technological process of“stagewise grinding,coarse and fine classification,gravity separation magnetic separation reverse anionic flotation”has been found out.
Height is a measurement at right angles to this surface, and though gravity pulls mainly toward the centre of the earth, the geocentre, there are local variations.
Supergravity strengthens mass transfer process by using strong centrifuge field instead of gravity field, which has gained wide attention at home and abroad since it came out last century.