Comparison of advantages and disadvantages of ball mill and vertical mill

Compared with the advantages and disadvantages of ball mill and vertical mill, cement manufacturers and beneficiation manufacturers have more equipment when choosing ore pulverizers. This article makes a multi-faceted comparison from the aspects of mill equipment concept, shape, processing technology, footprint, power consumption, noise and grinding wear parts.

1. Concept of ball mill and vertical mill equipment

(1) Introduction of ore ball mill

Ball mill

The ball mill is the key equipment for the material to be crushed and then crushed. This type of grinding machine is to put a certain number of steel balls in its barrel as grinding medium. Ore ball mills are widely used in cement, silicate products, new building materials, refractory materials, fertilizers, ferrous metals, non-ferrous metal beneficiation and glass ceramics and other production industries, dry or wet for various ores and other grindable materials. Grind. Ball mills are suitable for all kinds of ores and other materials, and are widely used in beneficiation, building materials and chemical industries. They can be divided into dry and wet grinding methods. According to different discharge methods, it can be divided into grid type and overflow type.

(2) Introduction of vertical mill

Vertical grinding mill

Vertical grinding mill is a high-efficiency and energy-saving mineral grinding equipment integrating drying, grinding, grading and conveying, which is developed and improved by learning and introducing foreign advanced technology. Vertical grinding mill are widely used in cement, electric power, metallurgy, chemical industry, non-metallic minerals and other industries. It is used to grind block, granular and powdery raw materials into the required powdery materials.

2. Comparison of advantages and disadvantages of ball mill and vertical mill: Appearance

(1) The shape of the ball mill

The ball mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head. The cylinder is a long cylinder, and the installation style of the equipment is lying on the ground. The layout of the land is rectangular. Cover a large area.

(2) Appearance of vertical mill

The vertical grinding mill is vertical and occupies a small area.

3. Comparison of advantages and disadvantages of ball mill and vertical mill: difference in processing technology

(1) Ball mill processing technology

Ball mill processing technology: steel balls are used as grinding media to collide and crush materials

The ball mill processing technology is a mechanical grinding method that uses steel balls as grinding media to collide and crush materials. When the barrel of the ball mill rotates, the grinding body (steel ball) is attached to the barrel liner and taken away by the barrel due to the action of inertia, centrifugal force and frictional force. When it is brought to a certain height, due to its It is thrown down by its own gravity, and the falling grinding body (steel ball) hits and smashes the material in the cylinder like a projectile.

(2) Processing technology of vertical mill

Vertical mill processing technology

The processing technology of the vertical mill is to use the grinding roller to crush the material. The material is placed in the grinding disc and crushed by the wheel-shaped grinding roller. The grinding roller does not move, but the grinding disc is fixed at the center and is driven by the central axis of the installed grinding disc to make a circular motion.

Compared with the processing technology of the ball mill and the vertical mill, it can be seen that the vertical mill does not need to add grinding media, while the ball mill needs to add steel balls as a process assistant. The vertical mill belongs to the grinding equipment of "material bed crushing", and the grinding roller of the vertical grinding mill adopts a wheel-shaped arc surface. And the operation of turning over and replacing is simple.

4. Comparison of advantages and disadvantages of ball mill and vertical mill: power consumption

The comparison of advantages and disadvantages of ball mill and vertical mill is the comparison of power consumption. The vertical mill has high grinding efficiency and low energy consumption. Compared with the ball mill, the energy consumption is 40%-50% lower; the single machine has a large production capacity and can use low-valley electricity.

5. Comparison of advantages and disadvantages of ball mill and vertical mill: noise

(1) Noise of ball mill

The ball mill uses steel balls to collide and crush materials, and the collision between steel balls and steel balls, steel balls and cylinders will generate loud noise. It's always been a problem to solve.

(2) Noise of vertical mill

The whole system of HLM vertical mill has little vibration and low noise. The noise has little impact on the workshop and surrounding areas.

6. Comparison of advantages and disadvantages of ball mill and vertical mill: cement industry

(1) Advantages of ball mill in cement processing

The ball mill has advantages in the production of cement and clinker. Because the particle shape produced is approximately spherical, it is beneficial to the unique advantages of raw meal calcination and "hydration hardening" of cement. This is the main reason why clinker mills still mostly use ball mills.

(2) Advantages of vertical mill in cement raw material processing

According to the survey, vertical pulverizers can save 20% to 30% of electricity than ball mills, and grinding slag can save 30% to 40% of electricity. They have been widely used in the world.

7. Comparison of advantages and disadvantages of ball mill and vertical mill: material moisture

(1) Ball mill

Ball mill processing materials can be wet or dry. Therefore, there are almost no requirements on the moisture requirements of materials.

(2) Vertical mill

The vertical mill adopts dry grinding, and the moisture content of the material is usually controlled within 10%. However, with drying equipment, the use of hot air drying for materials with high moisture content can also solve the problem of high moisture content of materials. It is an ideal equipment for the milling industry that integrates crushing, drying, grinding, grading and conveying.

8. Advantages of HLM vertical mill

HLM vertical mill focuses on coal, cement, slag, and non-metallic ore milling fields!

Finished particle size: 22-180μm Production capacity: 5-700t/h

HLM series vertical pulverizer is a high-efficiency and energy-saving advanced pulverizing equipment integrating drying, grinding, grading and conveying, developed by Guilin Hongcheng through learning and introducing foreign advanced technology and after more than 20 years of painstaking research and development. .

Hongcheng HLM vertical mill has the advantages of high grinding efficiency, low power consumption, large feeding particle size, easy adjustment of product fineness, simple equipment process, small footprint, low noise, small dust, easy use and maintenance, and easy operation. It has the advantages of low cost and low consumption of wear-resistant materials. It can be widely used in electric power, metallurgy, cement, chemical industry, non-metallic minerals and other industries. The material is grinded.

The whole system of HLM vertical mill has small vibration and low noise; the whole system is sealed and operated under full negative pressure, and there is no dust overflow, which can basically realize a dust-free workshop.

If you need to consult HLM vertical mill model and quotation, please contact me by email: hcm@hcmilling.com.