Application of Laeg LD300 Series Inverter in Ball Mill

I. Overview of ball mill

The ball mill is the key equipment for crushing the materials. It is widely used in cement, building materials, ceramics, mining and other industries. The ball mill is mainly composed of transmission device, cylinder device, feeding device, discharging device and electrical control device. From the process classification, there are two kinds of dry grinding and wet grinding, and according to the different ore discharge methods, they can be divided into lattice type and overflow type.

Second, the working principle of ball mill

The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging, a grinding head, etc. The cylinder is a long cylinder, and the grinding body is generally a steel ball, which is loaded into the cylinder according to different diameters and a certain proportion.

According to the particle size of the grinding material, the material is loaded into the barrel by the hollow shaft at the feed end of the ball mill. When the barrel of the ball mill rotates, the grinding body is attached to the liner of the barrel and taken away by the barrel due to inertia, centrifugal force and friction. When it is brought to a certain height, it is thrown down due to its own gravity, and the falling grinding body smashes the material in the barrel like a projectile. 

Three, the ball mill using site characteristics

The starting current of the ball mill is large, which has a great impact on the power grid. The energy consumption of the ball mill is high, but the efficiency is low, and the electric energy is wasted seriously. The investment and maintenance cost of the hydraulic coupler is high. The environment is harsh, with more dust and high ambient temperature.

Iv. Application Scheme of Jianghuai Lange Ball Mill

5. Advantages after switching to Laeg frequency conversion package

Smooth soft start, reduce the impact on power grid and transmission part, and prolong the service life of ball mill shaft and gear box; According to the frequency curve set by the process flow of the ball mill, the effects of starting high torque and saving energy and electricity in operation are achieved; The equipment can save the hydraulic coupler and reduce the one-time investment and later maintenance cost; Thickened three-proof paint and structural optimization function