The main working part of the ball mill is a rotating cylinder, which crushes and finely grinds the materials by the impact and grinding action of the grinding media (or grinding body) such as earth and steel segments installed inside.
The advantages of ball mill are:
(1) It has strong adaptability to materials, can produce continuously, and has large production capacity.
(2) The crushing ratio is large, up to more than 300, and the fineness of the ground product is easy to adjust.
(3) Can be adapted to operations under various circumstances. It can be used both dry and wet, and drying and powdering can be combined at the same time.
(4) The structure is simple, sturdy and reliable in operation.
(5) It has good sealing performance and can be operated under negative pressure to prevent dust from flying.
(6) It has a mixing effect while grinding.
The disadvantages of ball mill are:
(1) The utilization rate of electric energy is very low, and its effective utilization rate is only about 2%. Most of the remaining electric energy is converted into heat and sound and disappears.
(2) The structure is bulky and the cost is high.
(3) The consumption of grinding bodies and lining plates is very large.
(4) The noise is loud during operation.
Because ball mills have some outstanding advantages, they are not only widely used in the cement and ceramic industries, but also widely used to process various solid materials in industrial sectors such as mineral processing, metallurgy, chemical industry, and thermal power generation.