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| Number | Title | Issue Date |
| 7665681 | Fine grinding roller mill A roller mill for pulverizing material and separating the pulverized material has a mill for crushing the material and a classifier disposed on the mill for separating the crushed material. The mill includes a grinding mechanism that has a plurality of grinding roll... | 02/23/2010 |
| 7350727 | Roller mill, particularly air-swept roller mill, and method for grinding materials with magnetizable, particularly iron-containing constituents, E. G. slag The invention relates to a roller mill, particularly an air-swept roller mill provided with a device for separating magnetizable constituents, particularly iron particles from the milling area. The invention also relates to a method for grinding materials with magne... | 04/01/2008 |
| 7331540 | Dispersing device In a device for the dispersion of, in particular, low-viscosity to high-viscosity mixtures of substances, including a container having one or more openings for introducing the substances to be dispersed and one or more openings for discharging the dispersed substanc... | 02/19/2008 |
| 7325761 | Hammer for a material size reduction machine A hammer 28 is provided for a material size-reducing machine of the type including a rotor on which the hammer is individually pivotally mounted. The hammer 28 includes a mounting end 36 having a throughbore for receiving a pivot pin therethroug... | 02/05/2008 |
| 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 |
| 7240868 | Dynamic ring classifier for a coal pulverizer The present invention is directed to, among other things, a classifier assembly for mounting on the center shaft of a rotary coal pulverizer which includes a labyrinthian sealing arrangement operatively associated with the shaft for limiting the egress of unacceptab... | 07/10/2007 |
| 7100853 | Deflector for coal pulverizer/classifier A deflector disposed immediately above and outboard of a rotating vane wheel in a pulverizer/classifier is protected from wear and abrasion by side-by-side abutting high-hardness wear plates having an alloy content of approximately 15 percent chromium and three perc... | 09/05/2006 |
| 6547171 | Pulverizing installation The ball mill is of the type including: a rotary drum (11, 12, 13) having a horizontal axis (XX') and each end of which is supported by a journal (14, 15) which terminates it and through which passes an axial tube (41) around which it delimits an annular duct ... | 04/15/2003 |
| 6443376 | Apparatus for pulverizing and drying particulate matter The invention relates a pulverizer equipped with a free air purging mechanical seal/classifier design that provides free air purging of the seal gap between the mechanical seal assembly and the classifier. The invention also provides a coarse particle ext... | 09/03/2002 |
| 6135371 | Method and apparatus for reducing acid and air toxic emissions in the combustion of comminuted solid particles A cylindrical chamber has a drive shaft rotatably mounted therein and extending along substantially the entire longitudinal extent thereof. This drive shaft is rotatably driven by a motor preferably at a speed of about 3600 rpm. Solid particles to be comm... | 10/24/2000 |
| 5971302 | Method and apparatus for drying and grinding moist material Apparatus and method for drying and grinding moist raw cement or other material wherein the moist material is introduced to a grinding zone at which it is ground to produce relatively fine and relatively coarse particles which are separated and delivered ... | 10/26/1999 |
| 5875977 | Technique for improving the response time of pulverized coal boilers A method of controlling the operation of the bowl mills in a coal-fired steam generating power plant is disclosed; and in particular a method of controlling the operation of such bowl mills such that the furnace of a steam generating power plant can more ... | 03/02/1999 |
| 5873532 | Ball mill The present invention relates to a ball mill having a substantially horizontal axis of rotation and including a drum supported by two trunions having the same axis of rotation and situated at respective ends of the drum, raw coal being conveyed by substan... | 02/23/1999 |
| 5873156 | Coal pulverizer and method of improving flow therein An improved coal pulverizer classifying system including a classifier cone extension to protect coal flow into the pulverizer from the annular fine-lifting airflow from the pulverizer throat. The classifier cone extension replaces traditional intermittent... | 02/23/1999 |
| 5871160 | Apparatus and associated method for derfibering paper or dry pulp An apparatus and method for defibering paper and dry pulp in a substantially dry processing environment is disclosed. The apparatus and method for defibering paper and dry pulp uses a dry processing cell into which cellulose material is supplied. The dry ... | 02/16/1999 |
| 5850977 | Method and apparatus for comminuting solid particles A cylindrical vessel has a drive shaft rotatably mounted therein and extending along substantially the entire longitudinal extent thereof. This drive shaft is rotatably driven by a motor at a speed of 1,500-10,000. Solid particles to be comminuted which m... | 12/22/1998 |
| 5695130 | Method and apparatus for the dry grinding of solids A method and apparatus for the dry grinding of solids, comprises initial coarse grinding of the solids in a controlled vortexing of a fluidized bed and directing the solid fine particles generally upwardly into a vortex grinding zone and grinding the upwa... | 12/09/1997 |
| 5505390 | Two stage hammer mill with particle separator A two stage hammer mill which reduces recycled glass and its associated contaminants to small glass particles in the 100-800 grit size range and waste. The glass grinder is of light weight, modular construction, such that it may be taken apart, relocated,... | 04/09/1996 |
| 5505389 | Closed circuit grinding system A recirculating grinding plant with a crushing high-pressure roller press and sifter which has low energy consumption and which operates without a separate drive disagglomerator for disagglomerating the roll press scabs. The raw material together with the... | 04/09/1996 |
| 5402947 | Media granulation apparatus A new and improved media granulation apparatus includes a cyclone chamber assembly which includes an outer wall, a plurality of vortex controller assemblies connected to the outer wall, and an inner wall. A first conduit is connected to the inlet of the c... | 04/04/1995 |
| 5386619 | Coal pulverizer and method of improving flow therein An improved coal pulverizer classifying system in which the feedpipe and classifier cone are provided with extensions to protect coal flow into the pulverizer from the annular fine-lifting airflow from the pulverizer throat. The feedpipe and cone extensio... | 02/07/1995 |
| 5383612 | Apparatus for segregating low BTU material for a multi-source of fuel materials The apparatus for processing a composite supply of material having limestone, culm or gob and pond fines for grinding reduction with coal, has the ability to discard the low BTU value materials and materials hard to grind, and comprising grinding means ha... | 01/24/1995 |
| 5381968 | Apparatus and method for the crushing of material for grinding of differing grain size Fresh raw material is delivered to a crushing zone for crushing. Beforehand, fine particles are separated from the raw material by means of an airstream and directed into the housing of the crusher where they are entrained by an independent gas stream tha... | 01/17/1995 |
| 5279466 | Isokinetic separator apparatus Apparatus for grinding material which comprises a flow of ground material that contains both desirable fines and undesirable oversize particles in which a separator rotor is equipped with shaped blades that isokinetically separate out the oversize particl... | 01/18/1994 |
| 5271319 | Roll press with deaeration apparatus Roll press or mill with two adjacent rolls (2, 4) with cooperating compression surfaces, mounted in bearing housings located between an upper and lower box girder, one roll being adjustable, with a material feed system with at least one fill chamber (6) w... | 12/21/1993 |
| 5251383 | Apparatus for and a method of disposing of wet sludge Apparatus for disposing of wet sludge by conversion to a substantially dry product during grinding of the wet sludge in a drying atmosphere which promotes the separation of the grindings into coarse fractions and fine fractions so that the coarse fraction... | 10/12/1993 |
| 5215262 | Method and apparatus for comminuting bulk materials A process and device for crushing bulk materials. The material to be crushed is fed from above to a first accelerating device which accelerates it into a first crusher, the fine particles in the crushed material produced by the first crusher being carried... | 06/01/1993 |
| 4993647 | Two stage separator apparatus A material separator apparatus for obtaining refined material subjected to a first grind reduction which is moved into the separator where the large and/or heavier particles of the material are separated out and returned by gravity to fall back into the f... | 02/19/1991 |
| 4919341 | Grinding method and grinding apparatus The invention relates to a grinding method and to grinding apparatus using a ring mill, in which the air speed in an air ring surrounding the grinding track is chosen to be sufficiently low that a proportion of the material which has already been comminut... | 04/24/1990 |
| 4733826 | Impact crushing machine An impact crushing machine for finely and effectively pulverizing materials includes impact plates disposed on one side of a rotary plate and classifying blades disposed on the other side of the rotary plate. A fine grain exhaust outlet and a coarse grain... | 03/29/1988 |
| 4605174 | Vane wheel arrangement with nihard wear plates A vane wheel arrangement (30) particularly suited for use in a bowl mill (10) of the type that is employed for purposes of effecting therewithin the pulverization of materials such as coal. The subject vane wheel arrangement (30) which is positioned withi... | 08/12/1986 |
| 4602745 | Coverging/diverging orifice assembly for embodiment in a bowl mill A vane wheel arrangement (30) particularly suited for use in a bowl mill (10) of the type that is employed for purposes of effecting therewithin the pulverization of materials such as coal. The subject vane wheel arrangement (30) which is positioned withi... | 07/29/1986 |
| 4579288 | Pulverizer A pulverizer for pulverizing solid material such as coal in which the chmaber of the pulverizer has jets of fluid projected thereinto at high speed to cause the particles to impact against one another to effect the pulverizing and in which a sleeve is mou... | 04/01/1986 |
| 4575013 | Mineral breaker A mineral breaker with a horizontally mounted driven accelerating rotor having a mineral inlet on the under surface thereof and with material to be processed being drawn into the rotor in a flow of air. The processed material is discharged also in a flow ... | 03/11/1986 |
| 4566639 | Center feed material grinding mill A material grinding mill having a grinding chamber with a closed bottom, a material feed disposed to force ground material to move axially of the rotary grinder to an outlet at one or both sides of the grinding chamber, a scroll liner directed to lie adja... | 01/28/1986 |
| 4550879 | Vertical type pulverizing and classifying apparatus The invention provides an improved vertical type pulverizing and classifying apparatus comprising a lower, pulverizing chamber and an upper, classifying chamber, wherein a material under treatment is carried by gas streams. The disclosed apparatus include... | 11/05/1985 |
| 4546926 | Pressure-chamber grinder A pressure-chamber grinder comprises a grinder chamber of substantially circular section, which chamber is provided with a feed opening for the material to be ground, fed as a gas-tight plug, and the opposite end of which chamber is provided with an outle... | 10/15/1985 |
| 4529135 | Grinding crusher There is disclosed a grinding crusher having a grinder piece disposed within a crushing chamber for relative rotation with respect to a casing defining the crushing chamber. The casing is journaled and driven in high speed rotation so as to cause a materi... | 07/16/1985 |
| 4479613 | Pulverizing machines A pulverizing machine in which alongside the pulverizer rotor 16 are a classifier zone 29 and a conveyor zone 41. The rotor 16 has pulverizer members 25 which project into an annular reducing zone 27. Guide means 17 is provided in the conveyor zone to pro... | 10/30/1984 |
| 4428536 | Pulverizing and classifying mill A classifier mill having first and second series of beaters (1, 2) on respective sides (3, 4) of the periphery (5) of a rotary pulverizer disc (6) within a chamber (7), an independently rotary classifier (8) coaxial therewith and radially inwards of the s... | 01/31/1984 |
