Development and Application of Out-Limited h/D Helical Chute

Based on the sizing principle of conventional fine helical chute,this article advanced and developed an out limited h/D helical chute,which successfully solved some problems experienced in the desliming and primary beneficiation of andalusite.Under the same conditions,the yield of rough concentration by desliming with out limited chute is 10% more than with conventional chute,and the content of Al 2O 3 is about 4% more.