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| Number | Title | Issue Date |
| 7695276 | Furnace, its method of operating and control The present invention relates to a furnace (10), its method of operation and control. The invention overcomes problems associated with existing furnaces by improving the recovery rate of waste metal. In a preferred embodiment the furnace (10) comprises... | 04/13/2010 |
| 7172414 | Rotary tubular kiln for the production of activated carbon The present invention relates to a rotary tube (1), in particular for a rotary tubular kiln for the production of activated carbon, said rotary tube (1) having a plurality of mixing elements (3), in particular metal turning plates, said mixing e... | 02/06/2007 |
| 7086856 | Carbon baking furnace A carbon baking furnace comprising a refractory lined kiln defining a baking path, further comprising a means for substantially continuously receiving green carbon articles, means for packing said green carbon articles in a sacrificial medium, a means for substantia... | 08/08/2006 |
| 7033167 | Device for purifying and/or decontaminating polyester The invention relates to an apparatus for cleaning and/or decontaminating polyester, in particular polyethylene terephthalate (PET). The apparatus has an at least partially heated rotary tubular furnace to be fed with a mixture of polyester and an alkaline material ... | 04/25/2006 |
| 7029505 | Sheet type heat treating apparatus and method for processing semiconductors The single substrate thermal processing apparatus (2) includes a process chamber (5) arranged to accommodate a target substrate (W) and provided with a showerhead (10) disposed on its ceiling. A support member (28) is disposed to support ... | 04/18/2006 |
| 6948436 | Method and apparatus for the gasification and combustion of animal waste, human waste, and/or biomass using a moving grate over a stationary perforated plate in a configured chamber An apparatus for the combustion of organic waste such as poultry litter/manure, cow manure and swine manure, and/or human waste, and/or biomass using a moving grate over a stationary perforated plate to convert organic waste into usable energy. The unprocessed fuel ... | 09/27/2005 |
| 6884064 | Burner mechanism for a rotary kiln A burner protection shield is provided at a distance and in an area below a burner lance that is used in a rotary kiln for the production of cement clinker. Such a mechanism enhances the useful lifetime of the burner lance. ... | 04/26/2005 |
| 6883249 | Dryer with insulating flights An insulating flight for a dryer incorporates inner and outer plates with insulation between them. The concave surfaces of the inner and outer plates provide a space for the insulation and allow for thermal expansion without stressing the welds between the inner and... | 04/26/2005 |
| 6860735 | Rotary kiln Disclosed is a rotary kiln that can be used efficiently in drying, dry distillation and incineration of various garbage and industrial wastes. The rotary kiln comprises a cylindrical furnace body (10) disposed to incline at a small angle from the horiz... | 03/01/2005 |
| 6825339 | Apparatus for preparing polynucleotides on a solid support The present invention relates to an apparatus for preparing polynucleotides on a solid support in a reactor comprising a column containing an immobilized solid support that is functionalized for polynucleotide synthesis. The solid support can be porous, and can be f... | 11/30/2004 |
| 6705858 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the drum for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally closes the f... | 03/16/2004 |
| 6676407 | Warp resistant access door assembly for a high temperature combustion chamber A warp resistant fuel feed door assembly for use in injecting supplemental fuel into a high temperature combustion chamber such as a rotating cement kiln without substantial loss of heat or combustion gases. The apparatus, which is positioned on the exter... | 01/13/2004 |
| 6558157 | Rotary drum with rolling body arrangement A rotary drum for carrying out chemical processes at elevated temperatures which includes a rolling body arrangement for cleaning the interior of the drum, a stationary feed end for the material to be treated, a mounting device for the rolling body arrang... | 05/06/2003 |
| 6530779 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the frame for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally ... | 03/11/2003 |
| 6474985 | Toothed grate for rotary kiln peripheral discharge openings A rotary kiln for pyroprocessing particulate material includes a cylindrical kiln shell supported for rotation about a longitudinal central axis. The kiln has a plurality of circumferentially spaced peripheral openings provided in the kiln shell near its ... | 11/05/2002 |
| 6467190 | Drying kiln A duct system includes an upper duct that supplies heated air to an upper plenum and a lower duct that supplies heated air to a lower plenum, and the upper and lower plenums provide the heated air to a kiln chamber. An intermediate plenum is between the u... | 10/22/2002 |
| 6468074 | Rotary kiln for calcination of light aggregate cement A rotary kiln for calcination of light aggregate cement comprises a calcination kiln body, a heavy-oil combustion device, and a cooling device, wherein the calcination kiln body is formed in a U-turn for saving construction site and is composed of a feedi... | 10/22/2002 |
| 6447289 | Rotary drum roller support adjustable on a skew axis A support stand for supporting an elongated rotary drum for rotation about a longitudinally extending drum axis includes a lower portion extending upwardly from a base to a tilted top extending in a plane of tilt; a correspondingly tilted upper portion mo... | 09/10/2002 |
| 6435864 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the frame for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally ... | 08/20/2002 |
| 6405565 | Chalcogenide glass tubing fabrication An apparatus and process for fabricating tubing used in the making of chalcogenide fibers. The apparatus features a three-sectioned melt/spin ampoule that allows for fabricating the chalcogenide tubing without introducing impurities and contaminants, in a... | 06/18/2002 |
| 6368103 | Method and apparatus for reducing emissions in kiln exhaust A method for reducing emissions of a kiln including a feed end, the method includes operating the kiln and spraying a slurry inside the kiln at least five feet from the feed end. Additionally, the kiln includes a substantially tubular body including a bor... | 04/09/2002 |
| 6257878 | Preformed modular trefoil and installation method A trefoil for a rotary kiln is provided that has at least three spoke-like refractory legs. Each one of the legs extends radially outwardly from a center of the trefoil; spans approximately from the kiln shell to the center of the kiln; is pre-formed outs... | 07/10/2001 |
| 6244859 | Rotary kiln A rotary kiln (1) is equipped with a horizontal kiln drum (3), arranged rotatable and drivable in a furnace body (2), which kiln drum is closed at the charging and delivery side by end plates (4, 5) forming central charging or delivery openings (6, 7), re... | 06/12/2001 |
| 6219937 | Reheaters for kilns, reheater-like structures, and associated methods Elliptically shaped reheater conduits extend downward into a portion of a flow path that extends through a lower chamber interior space of a kiln chamber. Each of the reheater conduits has opposite ends, defines a length that extends between the opposite ... | 04/24/2001 |
| 6213763 | Door assembly for rotary furnace A rotary furnace includes a drum and a frame supporting the frame for rotation about a nominally horizontal rotational axis. The frame and the drum are supported for pivotal movement about a horizontal pivotal axis. A door supported on the frame normally ... | 04/10/2001 |
| 6193505 | Rolling body for a rotary drum and rotary drum with a rolling body A revolving drum containing a rolling element is provided that includes a member for the cleaning of the inner wall areas of the revolving drum which has at least two cleaning zones. The cleaning zones include projecting cleaning elements and lie in tande... | 02/27/2001 |
| 6186778 | Device for driving a cylinder in rotation The invention relates to a device for driving a cylinder in rotation about its longitudinal axis, and includes a ring gear perpendicular to the cylinder axis; truncated rollers arranged on each side of the ring gear, at least one of which is a drive rolle... | 02/13/2001 |
| 6164809 | Counter-flow asphalt plant with independently rotatable dryer and mixer A counter-flow asphalt plant with a separately controlled and operated dryer 50 and mixer 52 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition. The dryer 50 is rotated by a variable dryer drive 58... | 12/26/2000 |
| 6042370 | Graphite rotary tube furnace A rotary tube furnace suitable for operation in controlled atmospheres at temperatures in the range of 1500° to 2800° comprises a generally horizontal rotatable graphite tube slidably supported on water-cooled split ring graphite bearings. The graphite ... | 03/28/2000 |
| 6027338 | Furnace and method for firing ceramics A furnace for manufacturing ceramics is disclosed. The furnace contains a cylindrical heat resistant container, a furnace body for heating the cylindrical heat resistant container, and driving means for driving the cylindrical heat resistant container. Th... | 02/22/2000 |
| 6000936 | Rotary oven The invention relates to a rotating oven with a horizontal or inclined drum, of which at least the inner part is composed of a fireproof material and which is pivotably mounted around its longitudinal axis. The drum contains a tubular element (1) of a fir... | 12/14/1999 |
| 5997289 | Rotary calciner with mixing flights A rotary calciner for the treatment such as thermal treatment of particulate solids equipped with riffle flights, each in the form of an inverted V shape. The flights are arranged in at least two rows on the inner circumferential wall of the calciner, the... | 12/07/1999 |
| 5997288 | Apparatus for thermal removal of surface and inherent moisture and limiting rehydration in high moisture coals A flighted, horizontally inclined rotary retort, heated externally by flame, hot gases, steam or other sources of heat. The retort shall have sufficient flight area to transport the coal through the retort in the predetermined time. The coal being process... | 12/07/1999 |
| 5989018 | Lime sludge feed arrangement A method and apparatus for supplying lime sludge to a rotary kiln guides the flow of the lime sludge into the kiln, and the flow of flue gases out of the kiln, in distinct paths so that contact between the lime sludge entering the kiln and flue gases exit... | 11/23/1999 |
| 5980244 | System for connection of an annular tire or hoop and a rotary drum or tube, such as a rotary kiln or furnace A system for the connection of an annular tire (1) to a rotary drum (10) comprising blocks (2a, 2b) bearing upon the side faces of the tire and held in place by retaining elements fastened to the drum, said blocks comprising a portion (8) inserted underne... | 11/09/1999 |
| 5967065 | Method for disposing of paper in an asphalt plant A method and apparatus for disposing of paper in an asphalt plant. The asphalt plant comprises a container for stone aggregate to be heated, a burner for producing a burner flame to provide thermal energy for heating the stone aggregate in the container, ... | 10/19/1999 |
| 5927969 | Batch system cross-flow rotary calciner This invention relates to a batch type rotary calcination system where the gas used to heat and chemically react a particulate material is cross-flow contacted with the particulate material. This cross-flow is achieved by locating a gas inlet and a gas ou... | 07/27/1999 |
| 5913677 | Carbon reactivation apparatus A carbon reactivation apparatus has a fossil fuel kiln adjacent to a rotary dryer and flue gas from the kiln flows through the dryer co-currently with carbon particles to provide a more efficient process than previously known. The apparatus has a rotary k... | 06/22/1999 |
| 5908291 | Continuous cross-flow rotary kiln A direct heat rotary calciner and method for providing improved thermal treatment of particulate material comprises a rotary tube having a plurality of screened apertures along the length thereof. Material to be treated is passed through the rotating tube... | 06/01/1999 |
| 5906483 | Rotary film calciner An apparatus for drying/calcining comprises a horizontally extending rotatable drum and a center tube, concentrically positioned within the rotatable drum to provide an annular combustion chamber between the outer wall of the center tube and the inner wal... | 05/25/1999 |
