The basic principle of ball mill grinding process
Author : RuiGuang Time : 2013-10-30 Click :
Ball mill grinding operations are carried out in the ball mill cylindrical body with grinding media . Grinding media with the rotation of the cylinder was taken to a certain height , due to the weight of the whereabouts of the media . So mounted in the cylinder body of ore to be medium impact force ; partly because grinding media in the cylinder along the cylinder axis of revolution and rotation , and between the grinding media and the cylinder contact area has produced the ore crushing and grinding stripping force, thereby grinding the ore .Since the friction between the ball and the cylinder when the ball mill rotates, the ball incurs brought up and rise to a certain level, the ball itself, gravity , along a given track of the whereabouts of the last . In the region ( the ball was brought ) the role of the ball by two forces : one for the cylinder rotates the ball from the tangential direction of the applied force ; another with diametrically opposite said one side of the ball with the force opposing forces , the force generated due to its own weight, slide down the ball caused . Therefore , these two forces , a ball for any couple would constitute a pair . And because the ball is being squeezed in the middle of the cylinder and the adjacent ball , so the ball will couple exist between different sizes of friction, and thus with the cylinder axis of the layers to make the ball will revolve movement ( of course , there are layers of the ball is not synchronized with the cylinder speed , while the orbital speed of the ball layers are not the same ) . In the region since the fall into the falling ball , and thus on the cylinder body in the area where a strong impact occurring ore crushing effect . Since impact force generated when the ball drops , and thus in the region have an extremely strong ball without orderly movement.
Including:
( A ) Point online side strong ball rolling ;
( 2 ) along the dotted line at the ball of the fast-moving ;
( 3 ) a dotted line following the ball mill shell with the fast-moving ;
( 4 ) the impact of the interaction between layers of steel balls . Visible region which is the grinding effect is most strongly . Most of coarse mineral particles get ground here .
From the above , the main cylinder of the mill the ore is subject to impact, grinding stripping strength and extrusion pressure, which is grated .
www.cnballmill.com