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| Number | Title | Issue Date |
| 8141803 | Roller mill for grinding particulate material A roller mill (1) for grinding particulate material such as cement raw materials, cement clinker, coal and similar materials, said roller mill (1) comprising a substantially horizontal grinding table (3) and a set of rollers revolving about a ve... | 03/27/2012 |
| 8109458 | Rolling bearing Described is a rolling bearing (1) for a rocker arm, said rolling bearing comprising an at least partly circular outer part (2), an at least partly circular inner part (3) and a number of rolling elements (5) which are fitted between the ... | 02/07/2012 |
| 8061641 | Roller mill for grinding particulate material A roller mill (1) for grinding particulate material such as cement raw materials, cement clinker and similar materials has a substantially horizontal grinding table (3) and a set of rollers revolving about a vertical shaft (5). The set of roller... | 11/22/2011 |
| 7992815 | Pulverizer mill yoke with supporting framework A pulveriser mill has a grinding set (2) supported by a support table (4), the support table having on its underside supporting parts 8′, 10′, 12′. By such means the working life of the support table may be extended. ... | 08/09/2011 |
| 7954743 | Roller mill The invention relates to a roller mill having at least one mill roller and a rotatable mill platen, which are arranged in a mill inner space, and a moment arm which is retained so as to be pivotably movable and rotationally secure in a bearing, with the mill roller ... | 06/07/2011 |
| 7926754 | Safety systems for roller mills A drive systems for a roller mill is provided. To ensure the continuous availability of the mill, more than two drives are provided, wherein the at least two drives are capable of achieving the full grinding capacity of the roller mill. ... | 04/19/2011 |
| 7866584 | Vertical mill The invention relates to a vertical mill comprising a grinding track (1) and at least one grinding roller (2). The grinding track (1) is provided with a central zone (Ia) made of a harder material and two laterally adjacent edge zones (Ib, Ic) m... | 01/11/2011 |
| 7731116 | Roller mill safety system In order to minimize the loss of production of a crushing plant, particularly a cement crushing plant and optimize on the gear side the availability of the roller mill, according to the invention a replacement gear is provided alongside the operating mill gear. The ... | 06/08/2010 |
| 7673827 | 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,... | 03/09/2010 |
| 7438247 | Grinding rollers for a vertical crusher The invention relates to a composite milling roller, produced by casting, comprising peripheral inserts of a high wear-resistance and high hardness material, sealed in a ductile material on said casting. The roller comprises first zones subject to high wear and seco... | 10/21/2008 |
| 7395981 | Plunger can assembly A plunger can for a roller assembly within a pulverizing mill has a body which contains a compression spring. A stub shaft transfers the force generated by the compression spring to the roller assembly. A bushing in cooperation with a locking guide in the fore end o... | 07/08/2008 |
| 7341212 | Enhanced ore comminution process and apparatus A method and apparatus for comminuting particulate material by inter-particle comminution in a bed of particles are disclosed. The apparatus includes a vertical roller mill with a horizontal grinding table rotating about a verticle mill axis. At least one grinding r... | 03/11/2008 |
| 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 |
| 7182283 | Pulverizer real-time monitoring system A pulverizer monitoring system is applicable to at least one pulverizer having a rotatable bowl assembly, and at least one journal assembly having a grinding roll positioned proximal the rotatable bowl assembly, wherein the grinding roll is deflected by the feedstoc... | 02/27/2007 |
| 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 |
| 6935585 | Grinding head A grinding head (10) includes a grinding bowl (12) provided with a boss (14) fixed to a bottom wall (16) of the bowl (12) and projecting into the bowl (12). The head (10) also includes a grinder ring (18) that ... | 08/30/2005 |
| 6874715 | EL type pulverizers Improvements in EL type pulverizers provide for longer wear life and reduced incidences of parts failures include: deep-dish contour grinding rings, tight tolerance ball tracks, heavy-duty top grinding ring flukes, larger diameter grinding balls, and an improved all... | 04/05/2005 |
| 6401561 | Bowl mill transmission A bowl mill transmission which has a high overall transmission ratio with a large output torque, is of compact construction and is simple to assemble. The transmission being a vertically arranged bevel-gear stage for power input and a multi-stage transmis... | 06/11/2002 |
| 6344011 | Bowl mill transmission A bowl mill transmission which has a high overall transmission ratio with a large output torque, is of compact construction and is simple to assemble. The transmission includes a vertically arranged bevel-gear stage for the power input and a multi-stage p... | 02/05/2002 |
| 6024311 | Rotating shaft support assembly for a bowl mill A pulverizer shaft rotation support assembly includes a rolling element sub-assembly for rotationally supporting the shaft of a pulverizer of a bowl mill of the type which is operative for pulverizing material such as coal into smaller particles, and incl... | 02/15/2000 |
| 5904307 | Pulverizer apparatus with horizontal axis pivot scraper A scraper assembly for use with an associated coal pulverizer or as part of a coal pulverizer having a vertical axis with a central hub that rotates during normal operation of the pulverizer. The scraper assembly includes a bracket dimensioned and configu... | 05/18/1999 |
| 5901912 | Efficient production of landplaster by collecting and classifying gypsum fines A landplaster production method includes the steps of providing a supply of particulate gypsum material, drying the gypsum material by passing a stream of heated air thereby as the material is rotated, classifying and separating the dried particles into f... | 05/11/1999 |
| 5585180 | Method of preparing glass microfibers for use in composites and flowable microfiber products Glass microfibers having diameters of less than one micron are useful in engineered plastics to achieve very smooth surfaces and thermal stability in composite parts. As made, glass microfibers are very bulky and intertwined making it impossible to meter ... | 12/17/1996 |
| 5580002 | Method and apparatus for heating and grinding materials Hot gas is introduced into a fluidised bed of granular material, for example gypsum, contained in a vessel 10 having a grinding device or mill 11 in its lower region, which may comprise grinding rollers 15 cooperating with a table 17 on the base of the ve... | 12/03/1996 |
| 5531388 | Air-swept mill An air-swept mill has an annular space with a blade ring between a rotary grinding pan and a casing wall for fluid delivery flow. The annular space and the blade ring form a gas directing or guiding device for rotary flow and circulation flow of the fluid... | 07/02/1996 |
| 5524840 | Milling device The milling device comprises a milling roller running in a milling ring, wherein the diameter of the milling roller is at least equal to the inner radius of the milling ring. The milling roller is driven by a tangential force. By this arrangement it is gu... | 06/11/1996 |
| 5513812 | Grinding roller A grinding roller for roller or rolling mills, and its method for manufacture. For inexpensive manufacture and for increasing the service life, accompanied by limited repair expenditure, a roller jacket is manufactured in one piece for mounting on a radia... | 05/07/1996 |
| 5346148 | Asymmetric pulverizer tire Reinforcement sections are provided at an outer surface and at an inner surface of a tire for a roll wheel assembly used in a pulverizer for crushing a material such as coal. These reinforcing sections cause the tire to be asymmetrical and are located on ... | 09/13/1994 |
| 5251831 | Roller mill Raw coal is caused to fall through a coal feed pipe and onto a table so as to be pulverized by a roll. Fine coal particles and coarse coal particles resulting from pulverization are moved upward between an auxiliary classifier cone and a mill casing by ho... | 10/12/1993 |
| 5050810 | One-piece pulverizing roller A one-piece pulverizing mill roller assembly and method of rebuilding the same. The roller assembly comprises a body, an integral hub portion and an integral circumferential outside tread portion which mates with an annular groove in a grinding table. The... | 09/24/1991 |
| 4989795 | Roller mill journal labyrinth lubrication system Improvements are provided for the journals used in rock grinding and similar operations to lubricate the bearings of such a journal in such a way as to prevent contaminants from ever reaching the bearings.... | 02/05/1991 |
| 4863109 | Related to grinding mills An upper grinding conical shaped member rolls around a lower grinding surface, granular material to be ground being fed onto the grinding surface through a hole in the apex of the upper grinding member and being deflected into the path of the upper grindi... | 09/05/1989 |
| 4860962 | Bowl-mill crusher An owl-mill crusher with stationary grinding rollers (6) inside a housing (1) that roll over a grinding bowl (3) resting on a rotating grinding-bowl support (5). An air box (8) is provided below the grinding bowl (3). A circular-conical disk (17) is secur... | 08/29/1989 |
| 4807818 | Mill for grinding granular material A conical grinding member (2) is caused to move over a grinding surface (1) and material deposited on the surface is ground by a crushing and shearing action. The mill finds particular application in the grinding of grain.... | 02/28/1989 |
| 4787562 | Grinding mill with means for damping roller displacement A vertical spindle type grinding mill for example for crushing coal comprises upper and lower rings 1, 2 together defining a track for rolling grinding members 3 and yokes 7, 4 bearing against the upper and lower rings 1, 2 for resisting forces tending to... | 11/29/1988 |
| 4723718 | Chip crushing surfaces The cooperating surfaces defining a pressing nip in a chip crusher are formed with specific patterns to treat the chips by fissuring to facilitate penetration by cooking chemical for the making of pulp for papermaking and the like. One of the surfaces is ... | 02/09/1988 |
| 4705223 | Bowl mill A ball mill with a housing (1) that accommodates three stationary rollers (2) rolling along a rotating track (3). The rollers are held against the track by means of an upper and lower frame (9 & 10). The frames have springs (11) between them. Rods (8), ea... | 11/10/1987 |
| 4694997 | Apparatus for exerting a downward force on a grinding roller An improved mechanism for exerting a downward force on a roller mechanism of a roller mill which includes a fluid actuated piston-cylinder device connected to the rocker arm of the roller by means of a link element pivotally connected at its one end to th... | 09/22/1987 |
