What are the advantages of Raymond mill compared with ball mill?

The comparison between Raymond mill and vertical mill, and the difference between Raymond mill and ball mill are issues that purchase mineral powder equipment purchasers, powder company owners and powder industry experts pay more attention to. For owners of powder companies and individuals with mining and deep processing experience, it is difficult to decide on the choice of machinery when purchasing because they do not know much about it.The editor of HCM Hongcheng Machinery Vertical Mill summarized the comparison between Raymond mill and vertical mill, and the difference between Raymond mill and ball mill mainly from three aspects: equipment energy consumption, investment cost and milling efficiency.

Raymond mill, also known as Raymond mill, has stable performance, high cost performance and strong adaptability. It is suitable for the preparation of various mineral powders and coal powders, such as the fine powder processing of raw ore, gypsum ore, coal and other materials. The structural features are three-dimensional structure, uniform fineness of finished powder, important components made of high-quality steel, and centralized control of the electrical system.

The vertical mill is an ideal equipment for the grinding industry that integrates crushing, drying, grinding, and grading transportation. It can be 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 required powdery materials. After the optimized operation of the vertical mill, its characteristics are more prominent, including high grinding efficiency, low operating cost, strong drying capacity and stable product quality.

The ball mill is the key equipment for crushing the materials after they have been crushed. It is widely used in production industries such as cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal mineral processing, glass and ceramics, etc., for dry or wet grinding of various ores and other grindable materials. It is characterized by simple structure, smooth operation and reliable work.

Comparison between vertical mill and ball mill

In the past few decades, due to the blockade of foreign related technologies and the high price of vertical mills, vertical mills have rarely been used in our country. Domestic powder manufacturers in my country mainly use ball mills to process powders; in recent years, with the development of my country.With the reform and opening up and the development of science and technology, my country introduced vertical mills from developed countries such as Germany, and then some domestic mining machinery manufacturers copied domestic vertical mills through reverse development, and then quickly localized them, breaking the foreign monopoly. As the price dropped, more and more powder manufacturers in coastal areas such as Hezhou and Guangdong in Guangxi began to choose vertical mills to process powder. Ball mills are gradually being replaced. So which one is better, vertical mill or ball mill? What are the advantages and disadvantages of vertical mills and ball mills?

Due to the structure and operating principle of the ball mill, the grinding efficiency of the ball mill is lower and the energy consumption is higher than that of the vertical mill under the same power. The grinding power consumption of the vertical mill is only 50%-60% of that of the ball mill.

Since the vertical mill generates a lot of heat when grinding materials, and this heat will have a certain drying effect, the moisture content of the materials in the vertical mill can be 10%, even more than 6% in the Raymond mill. To dry materials in a ball mill, an external heating device is required to pass in hot air to dry the materials, which not only increases the cost, but also increases energy consumption.

Because the vertical mill uses a hydraulic cylinder to increase the grinding force, the grinding force is larger, so the particle size of the grinding material can reach 5% of the diameter of the grinding roller, so large and medium-sized vertical mills can save secondary crushing.

Because the vertical mill uses a hydraulic cylinder to increase the grinding force, the grinding force is larger, so the particle size of the grinding material can reach 5% of the diameter of the grinding roller, so large and medium-sized vertical mills can omit secondary crushing.

The residence time of materials in the vertical mill is 2-3 minutes, while the ball mill takes 15-20 minutes. Therefore, when grinding materials with a vertical mill, the chemical composition of the product can be quickly measured and corrected, so the fluctuation of the product composition is small, which is beneficial to Homogenization, the vertical mill relies on gas to transport materials, and qualified products can be separated in time to avoid over-grinding. The uniformity of products is conducive to calcination, so the control of the vertical mill is more convenient.

Due to the simple process of the vertical mill, the five processes of crushing, drying, grinding, powder selection and transportation are integrated into one. The process flow is simple, the layout is compact, the building area is small, and the floor area is about 50%-70% of the ball mill system. It occupies a small space, and the construction space is 50%-60% of the ball mill.

Since the grinding roller and the grinding disc lining of the vertical mill are not in direct contact during operation, there is no metallic sound of the steel balls colliding with each other and the steel balls hitting the lining in the ball mill, so the noise is naturally much smaller.

Comparison between Raymond mill and vertical mill. The difference between Raymond mill and ball mill.

Comparison between Raymond mill and vertical mill, and the difference between Raymond mill and ball mill mainly lies in the power consumption.

1. Comparison of power consumption

Depending on the grindability of raw materials and product particle size, ball mills consume 3 to 4 times more energy than Raymond mills. Ball mills also consume about 30% more energy than vertical mills, but the fine powders of Raymond mills and vertical mills The content is lower than that of ball mill.

2. Cost comparison

The initial construction cost, operating cost and maintenance cost of a Raymond mill are about 40% of that of a ball mill and 30~40% of that of a vertical mill.

3. In terms of grinding materials

Ball mills and vertical mills must be equipped with drying equipment to grind materials with humidity below 10%, while Raymond mills can directly grind such materials without the need for drying equipment, so it also saves a lot of costs in supporting equipment. 

4. Production comparison

If different values are used, the output of Raymond mill can be the same as that of vertical mill and ball mill.

5. Grinding efficiency comparison

Vertical mills and Raymond mills use new technology grinding roller devices to grind materials, and their bodies are all vertical structures. The ball mill uses ball collision and friction, so the grinding efficiency of the ball mill is low.

3. HCM Hongcheng Machinery Raymond Mill models and advantages

The most well-known model of HCM Raymond Mill in Guangxi is the 1700 Raymond Mill. The price of HCM 1700 Raymond Mill is suitable for China's national conditions and has high cost performance. HC1700 longitudinal pendulum mill is a new generation of large-scale and efficient Raymond mill independently developed by HCM. It draws on the working principle of the pendulum mill and improves the swing mode of the pendulum mill. Without changing other parameters, the centrifugal grinding force is increased by nearly 35% and the contact area between the grinding roller and the grinding ring is improved. , the output is 2.5 to 4 times higher than the traditional 5R Raymond mill, the crushing efficiency is greatly improved, and the unit energy consumption is reduced. Using a forced turbine classifier, the fineness range of the product can reach  between 0.18-0.038mm (80-400 mesh). At the same time, the sealing structure of the transmission device and grinding roller assembly has been improved, making the operation of the equipment more reliable and making maintenance more convenient. HC1700 has the characteristics of large output, high unit power output, low comprehensive investment cost and operating cost, energy saving and environmental protection, etc. It is the choice for large-scale powder processing projects.
To inquire about the price of Raymond powder machine, you are welcome to contact us by email:mkt@hcmilling.com