Formally known as the Raymond Series Suspended Roller Mill, this machine is a classic and mature industrial powder processing equipment, serving as a foundational model for modern medium-speed grinding mills. Its core positioning targets small-to-medium-scale production lines for non-metallic mineral powder processing. Its objective is to stably produce fine powders ranging from 80 to 425 mesh (approximately 0.045–0.18 mm) with cost-effectiveness and easy operation.
Simply put, it currently stands as the primary workhorse for processing medium-low hardness non-flammable and non-explosive materials such as limestone, calcite and barite.
• Applicable Materials: Limestone, calcite, barite, gypsum, bentonite, kaolin, coal, etc. (non-flammable, non-explosive, Mohs hardness ≤ 7).
• Industry Applications: Non-metallic mineral deep processing, building materials production, chemical processing, metallurgy, power plant desulfurization and coal powder preparation.
Patented technology, with an Inner automatic thin-oil lubricating system, and a long oil change cycle.
The Raymond mill adopts a three-dimensional structure and occupies a small area. The main transmission device utilizes a closed gearbox and pulleys, ensuring smooth operation.
The fineness of the finished product of this grinding equipment ranges from 613 microns to 440 microns (0.613 mm to 0.44 mm), and the screening efficiency is 99%.
The important components of Raymond Mill are made of high-quality castings and profiles. The entire machine exhibits high wear resistance and a low failure rate.
• Machine Positioning: This medium-speed suspended roller mill is a classic mainstream industrial pulverizing equipment. It serves as an efficient replacement for traditional ball mills and an economical alternative to high-end vertical roller mills. It processes non-flammable, non-explosive materials with Mohs hardness ≤ 7, producing fine powder at 80–425 mesh (≈0.045–0.18 mm), with customized versions reaching 800 mesh.
• Working Principle: Pre-crushed materials are evenly delivered into the main grinding chamber. Under centrifugal force, grinding rollers press tightly against the grinding ring, while scrapers lift materials into the roller-ring gap for compression and pulverization. Airflow conveys ground powder to the classifier for screening: coarse particles return for regrinding, and qualified fine powder is collected via cyclone separation to finish the whole grinding cycle.
| Model | Roller NO. (pcs) |
Roller Size L×H(mm) |
Grinding Ring Inner Dia.(mm) | Input Size (mm) |
Output Size (mm) |
Capacity (t/h) |
Power(kw) | Overrall Dimension L×W×H(mm) |
| 3R1510 | 3 | 150*100 | 570*100 | 15 | 0.125-0.044 | 0.8-10 | 7.5 | 3200*1200*3800 |
| 3R2115 | 3 | 210*150 | 630*150 | 15 | 0.125-0.044 | 1-12 | 15 | 3500*3300*4500 |
| 3R2615 | 3 | 260*150 | 780*150 | 20 | 0.125-0.044 | 1.5-20 | 18.5 | 4650*3600*5100 |
| 3R2715 | 3 | 270*150 | 830*150 | 20 | 0.125-0.044 | 2-28 | 22 | 4700*3600*5100 |
| 3R3015 | 3 | 300*150 | 875*150 | 25 | 0.125-0.044 | 2-35 | 30 | 5300*4100*5200 |
| 4R3016 | 4 | 300*160 | 890*160 | 25 | 0.125-0.044 | 3-36 | 30 | 5400*4100*5200 |
| 4R3216 | 4 | 320*160 | 970*160 | 25 | 0.125-0.044 | 4-45 | 37 | 7100*5900*7900 |
| 4R3220 | 4 | 320*200 | 970*200 | 25 | 0.125-0.044 | 4-55 | 45 | 9900*5800*1058 |
| 5R4119 | 5 | 410*190 | 1270*190 | 30 | 0.613-0.044 | 8-60 | 75 | 9200*7250*9700 |
*The output will vary according to different materials, feed particle size and other factors
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