Summary: As common grinding equipment, Raymond mill has been favored by many users around the world with stable performance, low energy consumption and high efficiency. ...
In recent years, China's grinding equipment industry has developed rapidly. The modules system for grinding mill development is reasonably mature and robust, which not only achieves simple operation in production, but also pays more attention to the diversification of equipment performance. In a word, the cost performance of grinding equipment has been greatly improved.
Today we will talk about Raymond mill which appeared earlier than vertical mill and ultrafine mill.
As common grinding equipment, Raymond mill has been favored by many users around the world with stable performance, low energy consumption and high efficiency. But for Raymond mill, what do we really know about it?
Next, I will introduce Raymond mill comprehensively from four aspects and hope that helps you understand it quickly.
1. The principles of Raymond mill
The operating principles of Raymond mill are: Materials enter into the hopper to be crushed by rollers. The rollers are going around the vertical axis and rotating itself at the same time. Due to the centrifugal force during rotation, the grinding roller swings outward to press the grinding ring to achieve the purpose of crushing materials.
In recent years, there have been many manufacturers producing Raymond mills in China. There are also more and more models of Raymond mill like Hanging Roller Mill and Vertical Raymond Mill.
Raymond mill has characteristics of outstanding advantages, high applicability and high market share.
2. Application range of Raymond mill
Raymond mill has been widely used in high-fine pulverization processing of non-flammable and non-explosive materials, such as quartz, talc, marble, limestone, dolomite, copper and iron, whose Mohs hardness is below grade 9.3 and humidity is below 6%. The output size of Raymond mill ranges from 60-325 mesh (0.125 mm -0.044 mm).
3. The functions and features of Raymond mill
Different grinding mills have their own advantages and performance. Generally, Raymond mill has these features.
- （1）The structure of Raymond mill is vertical with less space and strong systematisms. It can be a separate production system no matter from raw materials processing or transportation, powder and final packaging.
- （2）Compared to other grinding equipment, Raymond mill has a high screening rate. The screen rate of finished product grinded by Raymond mill can reach more than 99% while others couldn’t.
- （3）Raymond mill adopts electromagnetic vibration feeder which is easy to adjust and maintain. In addition, it can help save electricity.
- （4）The electric system adopts centralized control which can realize unmanned operation in production.
- （5）The transmission device of main engine adopts airtight reducer, which is stable in transmission, reliable in operation and free from oil leakage.
- （6）The main parts of Raymond mill adopt high-quality materials with fine craftsmanship and rigorous operation, ensuring the durability of the whole system.
4. Problems with the Raymond mill
In recent years, nonmetallic minerals have been widely used in ultrafine powder industry. For this, the downstream firms pay more and more attention to the quality on non-metallic mineral products, especially on product fineness. As we all know, some problems of traditional Raymond mill have been troubling mineral processing enterprises and equipment manufacturers.
These problems are mainly reflected in:
- （1）Low fineness of finished products
The fineness of ordinary Raymond mill is generally below 500 meshes, which makes this equipment can only occupy the low-end powder application market. From this aspect, it does not follow the trend of fine powder industry in China in the future. - （2）Raymond mill has drawbacks such as a high malfunction rate, loud noise, large power consumption, and particularly high pollution.
- （3）Low efficiency
The separation effect of the collection system of Raymond mill is undesirability. A large amount of fine powder cannot be collected effectively, which causes the power waste in the repeated circulation. - （4）The air duct design of the main engine is unreasonable
Large materials often enter the machine and accumulate at the end of the volute box, which reduces the air volume and easily causes machine blockage, no powder output or insufficient powder output.
In order to solve these problems and meet the needs of the market, many manufacturers of grinding mills have made a lot of improvements to the traditional Raymond mill. Through the efforts of researchers, these problems have been alleviated to a certain extent. Now, the new type of Raymond mill has begun to occupy the market.
However, new technologies cannot be applied in some enterprises with limited scale and weak research and development capacity. Some problems still exist in China's Raymond mill market to some extent. Users should choose the product with a positive brand image because it can guarantee the product with an accepted standard. As an international company with 30 years of development, SBM has great experience in the grinding field. If you have any need of grinding mill, please leave your message, we will send professional persons to help you answer questions.
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