The influence of the critical value of ball mill on the production efficiency

Ball mill is an important grinding equipment in mineral processing production line, the critical value of ball mill, here mainly refers to the impact of the critical value of ball mill cylinder speed on the production efficiency.

The critical speed is one of the main data to measure the working condition of the mill. The speed of the ball mill cylinder directly determines the effect of the grinding media and the grinding operation. If the rotational speed is slow, then the steel ball is lifted to a small height, and the gravity itself causes the steel to be in a cascading state, with little impact, although the grinding effect is strong, and although it can improve the crushing rate, the effect is too low.

Rotational speed is the cylinder speed, and steel balls and materials in the grinding process, after expert precision calculations, there is a critical value in a very small range, can make the material and steel ball to reach the most value of the grinding state, if you can control the speed of the situation, to control the ball consumption, equipment production efficiency and equipment consumption, etc., can save a lot of production costs for enterprises.

When the rotational speed is high, the height of the ball mill steel ball is lifted is also high. After the ball rises to a certain height, it breaks away from the cylinder and falls along the parabolic trajectory, and is in the working state of throwing down. At the point of throwing down, the ore is mainly crushed by the impact and the grinding efficiency is the highest.

When the ball mill speed exceeds a certain limit, that is, when the ball mill speed is very high, the steel ball will rotate with the cylinder without falling, in a centrifugal operation state. At this time, the steel balls have no impact effect and the grinding effect is also very small, so that the grinding effect stops. When the outermost balls in the ball mill just rotate together with the cylinder and do not fall, the ball mill speed at this time is called critical speed.

The critical speed of various ball mills is proportional to its diameter D. The absolute value of critical speed is not easy to find, and only the formula of theoretical critical speed is widely used at present.

In the production process, it is not easy to grasp the critical value of ball mill speed in order to achieve the purpose of reducing steel ball consumption and saving mineral processing grinding cost. We will provide you with the best solution to provide you with comprehensive, advanced mineral processing production line equipment, as well as suitable for your use of the program to ensure that customers maximize the benefits of production, the website customer service 24 hours a day online welcome to consult the purchase.