What are the advantages and disadvantages of vertical mill and ball mill?

In the past few decades, due to the blockade of related technologies abroad and the high price of the vertical mill, the vertical mill is rarely used in our country.

China's domestic powder manufacturers mainly use ball mill to process powder.

In recent years, with China's reform and opening up and the development of science and technology, China has introduced the vertical mill from Germany and other developed countries.

Some domestic mining machinery manufacturers have made a copy of domestic vertical mill through reverse development.

Then it was quickly localized, breaking the foreign monopoly.

The price of the vertical mill then went down.

In guangxi hezhou, guangdong and other coastal areas more and more powder manufacturers began to choose vertical mill to process powder, ball mill was gradually replaced.

Then which is better, a vertical mill or a ball mill?

What are the advantages and disadvantages of vertical mill and ball mill?

Now,GuiLin HangDa Mining Machinery Co.,LTD. Will  give you a detailed explanation.

Grinding efficiency and energy consumption

Due to the structure and operating principle of the ball mill, under the same power, compared with the vertical mill, the ball mill grinding efficiency is low, high energy consumption, the vertical mill grinding power consumption is only 50% - 60% of the ball mill.

Drying capacity

Because the vertical mill produces a large amount of heat in the process of grinding the material, the heat will play a certain drying effect, so the water content of the material of the vertical mill can be 10%, or even more than 6% of the Raymond machine.

And the ball mill drying materials, the need for external heating device, through the hot air drying materials, not only increase the cost, but also increase the energy consumption.

Particle size of grinding material

Because the vertical mill is the use of hydraulic cylinder to increase the grinding force, the greater the grinding force.

Therefore, the particle size of the grinding material can reach 5% of the diameter of the grinding roller, so the large and medium-sized vertical mill can avoid secondary crushing.

control

The material stays in the vertical mill for 2-3 minutes, while the ball mill takes 15-20 minutes.

Therefore, the chemical composition of the product can be quickly calibrated by measurement when grinding the material with vertical mill.

As a result, the product composition fluctuations are small, conducive to homogenization.

The vertical mill carries materials by gas.

Qualified products can be separated in time to avoid over - grinding phenomenon.

All the products are uniform for calcining, so the vertical mill control is more convenient.

The floor space of the equipment

As the vertical grinding process is simple, concentrated crushing, drying, grinding, powder selection, conveying five to the process as one.

Simple process, compact layout, small building area.

The floor area is about 50%-70% of the ball mill system, occupying a small space, and the building space is 50%-60% of the ball mill.

Noise of equipment

Because the grinding roller and the grinding disc liner do not contact directly in the work of the vertical mill, there is no metal sound in the ball mill where the steel balls collide with each other and the steel balls collide with the liner, the noise is naturally much less.