IMPROVEMENT OF FINE MILLING TECHNOLOGY FOR MINING WASTE BASED ON PROPORTIONED STAGE-WISE DISINTEGRATION

It is suggested to improve selective milling and disintegration of mineral associations of mining waste by means of stage-wise increase in destructive energy. It is found that relative frequency of opposite rotation of rotors and the number of pass cycles of waste through disintegrator can be of use in optimization of separation of preset size fraction at minimized loss of spodumene owing to the reduction in slurrying. The flow chart is developed for the stage-wise disintegration of spodumene-bearing mining waste with obtaining of product of flotation size -0.16+0.02 mm at minimal yield (6.0%) of slime fraction -0.02 mm. The proposed flow chart efficiency is proved by the flotation concentration results.