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ball mill is key equipment to of grinding mill , and the Ball Mill with medium hard is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics etc. They are manufactured with highest quality material and workmanship; deliver the most efficient, trouble free and economical combination of material ranging from (5-30mm) down to varying product sizes.

The ball mill works mainly under the force of impacting and grinding. The movement of grinding media in the cylinder body takes several different forms. Some media make upward movement by attaching onto the surface of cylinder;

some slide downward; some make projectile motion. In order to further know the motion law of grinding media in the ball mill and simplify the problem, the following hypothesis are made in the research:

When the ball mill operates at normal speed, the grinding medium in cylinder makes circular motion according to its position;

2. The motion trajectory of the grinding body comes in only two kinds: one is ascending motion along with rotating barrel according to the concentric circular track centering the cross-sectional geometry center; another is downward motion along the parabolic trajectory.

The sliding movement between the grinding media and the cylinder and that between the layers of the grinding media is too subtle to be counted.The effect exerted by material to the cylinder body can be neglected.

The rotation speed and the filling rate of the cylinder have a big effect on the grinding effect. According to the different factors, the motion types can be summarized as follows, To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery,

Purging fall type

When the cylinder speed is too low and ball mill media are too few, there will only be rolling and sliding and basically no impact can be produced, so the grinding efficiency is not so ideal.

Tossing down type

When the cylinder speed is proper, the grinding media can attach themselves to the cylinder wall under the effect of centrifugal force. The grinding media will make upward circular movement along with the cylinder and will be taken to the appropriate height, and then land like projectiles.

According to the discharging type, ball mill could be divided into three types, overflow type Ball Mill, open-type Ball Mill and peripheral type Ball Mill. Overflow type Ball Mill is the most common one. As the first class open grinding equipment, ball mill is widely used for first class grinding equipment of concentrator, artificial sand stone and electricity sector of chemical plants. The Ball Mill rotation is based on deceleration motor and large gear deceleration rotation or through large gear deceleration rotation which driven by low speed synchronous motor, and then drive Ball Mill cylinder rotating. Steel bar, the grinding media is installed in cylinder; media is promoted to a certain height because of the joint action of friction and centrifugal force, and is dropping or falling off. The grinding materials are continuously feeding into the cylinder through inlet of ball mill, crushed by steel bar and discharge the finished products out of Ball Mill by overflow and continuous feeding strength then go to the next process.