Compared with other ball forming methods, our applied cool isostatic pressing can overcome the defects of hollow, delamination and low tightness, increase the production rate and improve the wear resistance of our alumina grinding ball.

The ball forming pressure has significant influence to the density of the unfired alumina ball, shrink in firing and the firing temperature. In certain pressure range, when increase the ball forming pressure, the density of the unfired alumina ball will be increased and the shrink in firing will be decreased.

The ball forming pressure also can influence the firing temperature; the different pressure in ball forming can lead to 20 -50°C difference in alumina ball firing temperature.

The ball forming procedure is very important to the quality of alumina grinding ball.

Firing is the key to determine the alumina ball quality, so prepare the ideal heating curve is the key factor to guarantee the quality of alumina ball.

We, HuaMing Alumina Technology Ltd., adopt the full automatic 1700°C tunnel kiln enable the continuous production and increased the production capacity.