Raymond Mill for Sale
Raymond mill also known as raymond roller mill, is a high-efficiency and high-fineness grinding mill. Compared with a ball mill for limestone, raymond mill is a vertical piece of equipment with a smaller footprint, effective reduction of venue costs. raymond mill is grinding materials adoption of high-pressure spring pressurization and Increases the pressure of the centrifugal force of the grinding rollers on the material. Raymond mill is suitable for grinding hardness less than 9.3 on the Mohs scale and below 6% humidity. It can be used for grinding limestone, kaolin, dolomite, graphite, and other 120 kinds of rocks. Raymond mill has the advantages of the finished product’s uniform and fine grain size. The grain size of the finished product is 0.61mm-0.033mm, with a sieve rate of up to 99%. Raymond mill finishes the grinding in a closed loop system and is equipped with a dust removal system to avoid pollution and comply with national environmental requirements. Raymond mill is widely used in Mining, building materials, the chemical industry, metallurgy, and other industries.
Advantages of Raymond Mill
High Efficiency
The feed size range of raymond mill is ≤30mm, a larger feed size than other limestone grinding mill. At the same power, the production capacity of raymond mill is increased by 10%—20%. The finished product has a fine grain size, some materials can reach 600 mesh. Sieve pass rate up to 99% and more.
Simple Structure
Raymond mills are vertical structures. Compared to ball mills for limestone, they have smaller footprints, simple structures, and are easy to operate. This effectively reduces the site and labor costs. The important parts of Raymond mills are made of high-quality steel, and the wear parts are made of high-performance wear-resistant materials, extending the service life of raymond mills.
High Degree of Automation
The raymond mill’s electrical system uses centralized control. The finished product particle size can be arbitrarily adjusted between 80 and 325 mesh. The mill enables unmanned operation of the server room, reducing labor costs for your production line.
Environmentally Friendly
The entire system operates under negative pressure. The Raymond mill has a dust collector with sealed welding. The total air leakage rate is less than 2%. The concentration of dust emissions is less than 30mg/m3, which is better than national requirements and standards to achieve environmentally friendly production.
Important Parts of a Raymond Mill
Grinding Roller
Grinding Ring
Shovel Blade
- Grinding Roller
The grinding roller is one of the most important parts of the raymond roller mill. It is usually made of high-strength wear-resistant materials, for example, there are alloy steel, alloy carbon steel, ZG65Mn manganese alloy steel, ZGMn13 high manganese alloy steel, and other materials. In raymond roller mill operation, the grinding roller and grinding ring are used together. There is a strong squeeze between them to crush the material into powder.
- Grinding Ring
The grinding ring is located outside the raymond roller mill and forms a grinding chamber. Crushing the material between the grinding roller and grinding ring. Grinding rings have good wear resistance and low costs.
- Shovel Blade
The shovel blade is installed on the spindle of a raymond roller mill and follows the rotation of the spindle. The material scattered on the millstone will be rooted up. Due to high-speed operation, the material will be root up and enter between the grinding roller and the grinding ring, So that the material is fully ground.
- Classifier
The Classifier is installed on the top of raymond roller mill. Through the rotation of the impeller to take compliant materials out. The non-compliant materials return to the grinding chamber for further grinding. Ensure the uniformity of the finished product.
- Blower
The blower mainly feeds the airflow in the raymond roller mill. So that the ground material is fed into the classifier through the airflow for classification.
How the Raymond Mill Works
1. Feed: The material is fed into a grinding chamber through a vibrating feeder or other feeding systems. Part of the material directly enters between the grinding roller and the grinding ring to be ground. Material dispersed on the grinding disk is scooped up by the spinning shovel blade, and entering between the grinding roller and the grinding ring to be ground.
2. Grind: The grinding roller is carried out a rotation under the rotation of the spindle and pressed firmly against the grinding ring under the influence of centrifugal force. The material between the grinding roller and the grinding ring is ground under pressure until the material is ground to a fine powder.
3. Classification: The blower generates a powerful airflow that feeds the ground fines into the classifier. The impeller in the classifier carries out a rotation to Bring out the fine powder that meets the requirement, and entire the collection system. Non-compliant fine powder is dumped back into the grinding chamber for further grinding.
4. Finished product collection: Compliant finished product is discharged from the bottom for collection. Residual airflow and trace amounts of dust are filtered in the dust collector, ensuring the exhaust gas is in compliance with environmental standards.
Reliable Manufacturer of Raymond Mill
AGICO the industry’s leading manufacturer of raymond mill, offers high efficiency and reliability raymond mill for global customers. AGICO also offers other ancillary equipment, such as a limestone crusher, stacker reclaimer machine, and vibrating feeder. Our equipment is widely used in many industries such as mining, building materials, and chemical industry. Customized solutions ensure that the equipment perfect match for your production requirement, maximization of production capacity.
Raymond Mill FAQ
Discharge particle size is too coarse or too fine
The classifier’s impeller speed is unstable, promptly adjust the impeller speed. Heavy wear of grinding roller and grinding ring, replace if necessary. The grinding time of the material is not enough, for the harder material to increase the grinding time of the raymond mill appropriately.
Excessive vibration in raymond mill
Check for foreign objects between the grinding roller and the grinding ring. Unstable foundations can also lead to excessive vibration in the raymond mill. Tighten equipment components regularly.
Decline in finished goods production
The material humidity is too high, leading to clogging and drying of the material. Heavy wear of the grinding roller and the grinding ring also affects the output. Adjust classifier impeller speed to improve classification efficiency.
Other Tips
Metal is not allowed in the raymond mill. Stop the feed for one minute before stopping the machine, then the mainframe, and finally the Blower and classifier.
Parameters of Raymond Mill
| Models | 4525 | 4119 |
|---|---|---|
| Feeding Size(mm) | ≤30 | ≤25 |
| Output Size(mm) | 0.173-0.044 | 0.173-0.044 |
| Shift Output of Different Material Fineness(t) | 16-176 | 8-78 |
| Rotation Speed of Central Shaft(r/min) | 82 | 105 |
| Ring Diameter(mm) | 1770 | 1400 |
| Roller Diameter(mm) | 450 | 410 |
| Roller Height(mm) | 250 | 190 |
| Main Motor | Y315M-4-132 | Y280S-4-75 |
| Fan Motor | Y315M-4-132 | Y280S-4-75 |
| Analyzer Motor | YCT250-4A-18.5 | YCT200-4B-7.5 |