Raymond mill, also called Raymond roller mill, combines grinding, classifying, and if necessary, drying, in one machine to produce precisely sized powders to meet exact production specifications. It is an efficient fine grinding machine for large-scale powder production.
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Baichy Raymond roller mill is a dry grinding machine for producing mineral powder with a controlled fineness. It is designed for non-flammable and non-explosive materials such as limestone, calcite, barite, dolomite, talc and other suitable industrial minerals.
A Raymond roller mill grinds material between rotating grinding rollers and a grinding ring. After entering the grinding chamber, the feed is reduced by compression and friction. An air stream then carries the ground particles to the classifier.
Fine particles that meet the selected specification pass through the classifier and enter the collection system. Coarse particles are returned to the grinding chamber for further grinding. This closed-circuit process helps maintain a more stable product fineness than an open-circuit grinding arrangement.
A complete Raymond grinding system can include the feeder, main mill, classifier, blower, cyclone collector, pulse bag filter, pipes and electrical control cabinet. The exact equipment list depends on the material, required capacity, feed condition and site requirements.
Raymond mill production line
Raymond mill host
Raymond mill roller
Roller working condition
Model selection should begin with the finished product requirement and the material condition, rather than the material name alone. The following factors affect the final configuration:
• Required capacity in t/h
• Target product fineness within the 80–325 mesh range
• Maximum feed size
• Material moisture
• Mohs hardness and abrasiveness
• Required working hours per day
• Available power supply and workshop conditions
• Whether a crusher, dryer, explosion protection or additional dust control is required
Feed should normally be crushed and screened to meet the maximum feed requirement of the selected model. Wet or sticky feed may require a drying or moisture-control stage before grinding. Baichy can recommend the raymond roller mill model and auxiliary equipment after reviewing these project conditions.
The classifier separates fine and coarse particles to produce 80–325 mesh powder.
Coarse particles return for regrinding, helping maintain stable product fineness.
The line can include the feeder, mill, classifier, blower, cyclone collector, bag filter and electrical cabinet.
Models with 15–75 kW main motors can be selected according to capacity, material and site conditions.
1. Feed preparation: The raw material is crushed and screened to the required feed size. Wet material may need a drying stage.
2. Controlled feeding: The feeder sends the material into the grinding chamber at a steady rate.
3. Grinding: Grinding rollers press the material against the grinding ring, reducing it into powder.
4. Classification: The air stream carries the powder to the classifier. Fine particles pass through, while coarse particles return for regrinding.
5. Collection: Finished powder is collected by the cyclone collector, while the pulse bag filter helps recover fine dust and control emissions.
| Model |
Roller (pcs) |
Roll Dia. (mm) |
Roll Ring Size (mm) |
Max. Input Size (mm) |
Output Size (mm) |
Capacity t/h |
Power (Kw) |
Dimension (mm) |
| 3R2115 | 3 | 210*150 | 630*150 | 15 | 0.125-0.044 | 0.4-1 | 15 | 3500*3300*4500 |
| 3R2615 | 3 | 260*150 | 780*150 | 20 | 0.125-0.044 | 0.5-2 | 18.5 | 4650*3600*5100 |
| 3R2715 | 3 | 270*150 | 830*150 | 20 | 0.125-0.044 | 0.8-3 | 22 | 4700*3600*5100 |
| 4R3016 | 4 | 300*160 | 890*160 | 25 | 0.125-0.044 | 1-4 | 30 | 5400*4100*5200 |
| 4R3216 | 4 | 320*160 | 970*160 | 25 | 0.125*0.044 | 1.8-4.5 | 37 | 7100*5900*7900 |
| 5R4119 | 5 | 410*190 | 1270*190 | 30 | 0.613-0.044 | 2.5-9.5 | 75 | 9200*7250*9700 |
A raymond roller mill is used for dry grinding and classification of suitable non-flammable, non-explosive mineral and industrial materials. Common applications include limestone, calcite, barite, dolomite, talc, kaolin, gypsum and selected coal or industrial mineral powders.
The finished powder size is 80–325 mesh. The final mesh size within this range depends on the material, feed rate, air volume, classifier setting and equipment condition. Confirm the required mesh size before selecting the model and operating parameters.
The listed reference models cover approximately 0.4–9.5 t/h. Actual output varies with material grindability, feed size, moisture and final fineness. Higher plant capacity may require parallel units or a different grinding solution.
A raymond roller mill is mainly used for dry grinding. Material with excessive moisture or sticky characteristics may require a dryer or another process arrangement. Send the moisture content and material description for confirmation.
A complete line may include a crusher, bucket elevator, hopper, feeder, Raymond roller mill host, classifier, blower, cyclone collector, pulse bag filter, pipes and electrical control cabinet. The exact list depends on the feed condition and the required product.
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