The preliminary crushing ore mined first jaw crusher, crushing to a reasonable degree of fineness via hoist feeder evenly fed into the ball mill, ore crushing, grinding by ball mill; ball mill grinding of ore fines into the nexta step of: grading; spiral sorting machine by means of the proportion of solid particles precipitated in the liquid velocity of different principles, the classification of the ore mixture, selected mineral;

Ore grading method:

A, through, and fractionated mineral mixture passes through the separator, due to the different than the susceptibility of various minerals, via magnetic and mechanical forces Mixture magnetic substance separated.

B, after graded mineral mixture through the separator, due to the different than the susceptibility of various minerals, via magnetic and mechanical forces of the magnetic substance of the mixes stars apart, through the mixing tube will be selected minerals are separated, because they contain large amounts of water, subject to the concentrator the preliminary concentrated can be obtained, and then through a dryer to dry minerals;