The different effects of different ball mill speed brought
4 March, 2015 at 5:49 am in Business
Location : SHANGHAISend Inquiry
After the ball mill is the material being broken, and then smash the key equipment. It is widely used in cement, silicate products, new building materials, refractory materials, chemical fertilizer, black and non-ferrous metal processing, such as glass ceramics industry production of all kinds of ores and other materials may be grinding of dry or wet grinding.
Bring the different effects of different rotating speed:
The ball mill speed size directly determines the state of motion of the cylinder body of the grinding media and grinding effect.
When the Ball mill for sale speed is low, low height in ball mill ball was promoted, by the action of the ball itself gravity ball bearing slide to roll from the top down, a fall, the impact force at the moment the ball is small, but the grinding effect is very strong, the ore is mainly by grinding and peeling and crushing, grinding efficiency high.
When the rotation is higher, the ball is also high lifting height. The cylinder from the ball rises to a certain height, along a parabolic trajectory in the whereabouts, thrown off working state. With great impact in the left main landing point, ore by impact crushing, grinding efficiency is the highest.
When the ball mill speed exceeds a certain limit (speed is very high), the ball rotating with cylinder without falling, in centrifugal operation state. When the ball is no impact, the grinding effect is also very small so that the grinding action to stop.
We know the proper increase of ball mill can improve the mill productivity revolution, but can not be one-sided pursuit of high speed grinding. Because the rotation increases, there will be some problems. For example, now the ball mill is below the critical rotation speed according to the theory of design and manufacture, if the use of critical or supercritical speed movement, a may occur due to the centrifugal force and the grinding mill lost.
The two is due to the high speed movement will make the mechanical vibration and parts wear intensifies, the service life of the equipment is greatly reduced. At the same time, the internal grinding ball mill was destroyed, discharging coarsens, grading load increased, so that the products are not up to the requirements of qualified particle size. And the grinding medium and liner wear volume increased.
Therefore, most concentrator used in the production of the working speed without critical operation.