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| Number | Title | Issue Date |
| 7267293 | High efficiency bowl mill A high efficiency bowl mill (100) is provided by the present invention. Included in the high efficiency bowl mill (100) is a plow (185) that is downstream of a grinding roll (180) on a grinding surface (145). The plow (185) ... | 09/11/2007 |
| 7252253 | Bowl mill for a coal pulverizer with an air mill for primary entry of air A bowl mill for a coal pulverizer with an air mill for primary entry of air, comprising a substantially closed separator body (2) having a central axis; and a bowl-like grinding table (3) mounted on a shaft (4) rotatable about said central axis,... | 08/07/2007 |
| 7226010 | Method and apparatus for solid fuel pulverizing operation and maintenance optimization A system for use with a roll bowl type mill for the pulverizing of solid fuels such as coal. The system includes hardware in the form of sensors and other components and software to among other things monitor the operating condition of the mill's moving parts and pr... | 06/05/2007 |
| 7028934 | Vertical roller mill with improved hydro-pneumatic loading system An accumulator assembly comprising at least two accumulators that are hydraulically interconnected to the same source of hydraulic fluid. Each accumulator containing an energy absorbing medium which is compressible when a movable barrier which separates the hydrauli... | 04/18/2006 |
| 4786289 | Process for producing a coal-water slurry A process for producing a coal-water slurry of low viscosity and high coal concentration with a low specific energy and a good efficiency is provided, which process comprises wet-grinding coal by means of a wet vertical ring-roll mill in the presence or a... | 11/22/1988 |
| 4072276 | Pulverizer with caster roller assembly An apparatus is provided for pulverizing material into comminuted particles in which at least three rollers are mounted for rotation and maintained in contact with the material on a grinding ring. The rollers are suspended in a manner to allow the rollers... | 02/07/1978 |
