Tecnodieci Alumina Bilya;
Alumina ball is used in ceramic and other raw material grinding mills and generally contains 92% Alumina.
It is a hard, very low-wear ceramic material. Alumina ball has high abrasion and impact resistance.
It is achieved by the purity of the raw materials used, the production process and the high firing degree.
However, since the percentage of wear cannot be determined visually, it must be subjected to a comprehensive wear test in a laboratory. The most important feature to be considered is that since it is a solid material, due to insufficient firing temperature and time, although the surface wear is within the standards, increased wear can be seen when the inner areas are reached.
For this reason, the most correct method is to fill the mill with the same batch of standard distribution balls and test the operation.
One of the most important factors to consider here is that different brands of balls are mixed in the same mill.
Because both balls have %. Even if they are 92 gauge, the balls may corrode each other as their densities may be different due to their processes.
There are two types of balls: dry and wet grinding balls. Therefore, if you do not choose the ball suitable for your grinding,
wear will be higher.
Ball sizes are generally between 5 - 90 mm. Appropriate balls should be selected according to the place of use and shape. In ceramic raw material grinding, 30-40-50-60 mm balls are generally used from the beginning to the mill. Then, when there is constant wear, the largest size of additional balls is selected.
Practically, 40% of the mill volume is ball, 40% raw material and water, the remaining 20% is left as agitation.
and ball selection; if the material you are going to grind is soft, a medium sized ball should be used, if you want a hard material, a larger ball (for crushing) should be used.
When purchasing balls, you can check the % water absorption value of the ball specified by the manufacturer. Practically, the lower the water absorption percentage, the less ball wear.
and finally, you can empty the mill balls on the ground at certain periods, sort them with a sieve system and throw them back into the mill, or you can attach a filter cover to the filling cap of the mill with the diameter of the ball you want to fall and fill the mill with water.
You can turn it empty and throw out the small balls inside.
