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Raymond mill and roller mill(three-ring/four-ring medium-speed mill) both belong to the series of mills in mining machinery, but there are also great differences in working principle, feed size, and discharge size.
1. The high-pressure micro-powder is only suitable for the feed particle size within 20 mm, and the roller mill is adapted to the feed particle size of 10 mm;
2. The size of the finished product of the roller mill is finer than that of the high-pressure fine powder;
3. The power of the mainframe of the high-pressure micro-powder Raymond mill is generally between 18.5-37 (unit: kw), and the power of the blower is generally between (unit: kw) 15-30. The power of the roller mill is generally between (unit: kw) 37-90, the power of the blower is generally between (unit: kw) 30-75.
| Raymond Mill | Roller Mill | 
| D97<325 mesh 2 microns<10% | D97<2500 mesh 2 microns<30% | 
| Grinding bycentrifugal force,loud noise,direct touch between rings and rollers in high abrasion. | High rotation speed of grinding parts,suitable for grinding materials lower than Mohs 6 grade. | 
| Low grade products | 2 microns content about 30% at most. | 
| Low investment,low cost,unstable quality | Low investment,easy operation | 
Raymond Mill

Roller Mill
