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| Number | Title | Issue Date |
| 7226022 | Cable duct coupler A cable duct coupler for coupling a first cable duct section to a second cable duct section without the need for tools, the cable duct coupler comprising a channel portion, a first outer guide element and a second outer guide element, a barb mount extending from at ... | 06/05/2007 |
| 6901773 | Semi-convective forced air system having amplified air nozzles for heating low “e” coated glass A semi-convective forced air system for heating glass sheets during a heating cycle comprises a heating chamber having a length and a width, at least one heating element located within the heating chamber, a conveyor having a length and a width, the conveyor extendi... | 06/07/2005 |
| 6347937 | Rotary kiln burner A direct coal fired burner system for a rotary kiln in which the burner has a multi-barrel construction through which primary air for conveying coal is heated with tertiary air sourced from the rotary kiln, and the shape of the emerging flame is controlle... | 02/19/2002 |
| 6061924 | Batch sludge dehydrator A dehydrating apparatus includes a chamber for receiving wet material to be dehydrated. A rotatably-mounted agitator is provided with the chamber. The agitator is adapted to agitate material in the chamber when the agitator rotates in a first direction an... | 05/16/2000 |
| 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 |
| 5904904 | Treatment of contaminated particulate material by low-temperature thermal desorption with indirect heating Contaminants are removed from particulate material in an inclined, rotating drum which has an inlet for contaminated material at its upper end, an outlet at its upper end for vaporized contaminants, an inlet for air that is located between the upper end a... | 05/18/1999 |
| 5788481 | 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... | 08/04/1998 |
| 5771820 | Method for the thermal treatment of waste material, particularly refuse, and a rotary tubular furnace for applying the method A waste material, particularly refuse, is conveyed through a combustion chamber while simultaneously being mixed and is treated with a gaseous oxidizing agent. The combustion chamber comprises a rotary tubular furnace. The waste material is acted on by th... | 06/30/1998 |
| 5746590 | Heating chamber with inner heating tubes and method of replacing the heating tubes Heating chamber rotatable about a longitudinal axis thereof and having a plurality of heating tubes located in the interior thereof, a first end plate to which each of the heating tubes is secured by an end thereof, a second end plate to which each of the... | 05/05/1998 |
| 5743954 | Method for continuous refractoryless calcining of gypsum A method and apparatus is disclosed for the continuous calcining of gypsum material in a high-efficiency, refractoryless kettle preferably heated by a multiple series of separate immersion tube burner coils, each coil operating within a specific calcining... | 04/28/1998 |
| 5716205 | Rotatable heating chamber for solid material A heating chamber for solid material, preferably a low-temperature carbonization drum for waste, is rotatable about its longitudinal axis and is equipped with a number of heating tubes that are disposed in an interior space and are aligned approximately p... | 02/10/1998 |
| 5644997 | Waste pyrolysis rotary furnace with internal heating The present invention relates to a furnace intended for the thermal treatment of solid materials, comprising a rotary element (1) in which said solid materials circulate longitudinally, and a means (9) for heating said materials, which extends longitudina... | 07/08/1997 |
| 5562053 | Tunnel incinerator A tunnel type incinerator with cylindrical inner and outer barrels which are rotated in opposite directions relative to each other. A large number of crushing blades or protrusions are disposed and engaged with each other in a spiral shape on the wall of ... | 10/08/1996 |
| 5361708 | Apparatus and method for pasteurizing and drying sludge A device for applying heat to sludge, including a rotating tubular chamber having a hollow-centered helical auger on its interior to move the sludge longitudinally through the chamber, and a gas distribution tube extending through the center of the chambe... | 11/08/1994 |
| 5338188 | Radiant heat rotary volatilizer An apparatus and method for remediating soils and other materials contaminated with organic compounds comprising dual volatilizing zones and radiant heat. The material is treated in the volatilizing zones to substantially volatilize the organic compounds ... | 08/16/1994 |
| 5096415 | Reaction furnace A reaction furnace includes a rotating core within a heated shell, the core and shell defining an active annular zone. An interrupted helical screw carried by the core conveys material from an inlet at one end of the zone to an outlet at the opposite end ... | 03/17/1992 |
| 5078836 | Method and apparatus for retorting material An apparatus and a method are disclosed for the thermal treatment of feed material containing solids and liquids such as solid waste or the like. The apparatus includes one or more coaxial rotatable drums and one or more free rotating spirals advancing th... | 01/07/1992 |
| 4988289 | Reaction furnace A reaction furnace includes a rotating core within a heated shell, the core and shell defining an active annular zone. An interrupted helical screw carried by the core conveys material from an inlet at one end of the zone to an outlet at the opposite end ... | 01/29/1991 |
| 4934931 | Cyclonic combustion device with sorbent injection A combustion device for the pyrolytic destruction and gasification of industrial or other wastes, or lower sulfur fuels, is provided which includes an elongated cylindrical kiln body. Air is introduced into the kiln body by a plurality of pipes which defi... | 06/19/1990 |
| 4881947 | High efficiency gasifier with recycle system A high efficiency gasifier employs a rotary kiln having an indirect fired gasifier and a recycle system. The rotary kiln provides an essentially oxygen-free gasifying chamber into which raw feed material is introduced. Radiant tubes within the chamber tra... | 11/21/1989 |
| 4850861 | Apparatus for conductive drying loose The apparatus includes a housing 1 accommodating inner and outer tubes 2 and 4, respectively, arranged concentrically relative to each other. Lower ends of the tubes 2 and 4 are connected by a flange 15 to a disk-type feeder 14 the flange and feeder havin... | 07/25/1989 |
| 4815969 | Heat loss reduction in rotating drum dryers A drum dryer for use in the manufacture of bituminous concrete asphalt is provided with a jacket including a layer of ceramic fiber insulation bonded to an outer sheath of aluminum, the jacket being wrapped around the outer peripheral surface of the wall ... | 03/28/1989 |
| 4676740 | Heat exchange apparatus and process for rotary kilns Heat exchange apparatus is provided for use in a rotary kiln having a bed therein for introducing thermal energy directly into central portions of the bed without lifting or tumbling thereof. In this manner, efficient heat transfer is effected from hot up... | 06/30/1987 |
| 4639216 | Grain roasting machine and method A grain roasting machine includes an elongated hollow roasting drum mounted for rotation about its fore-and-aft longitudinally-extending central axis and a burner for producing a roasting flame within the drum in a direction extending generally longitudin... | 01/27/1987 |
| 4612711 | Apparatus and method for drying particulate material Disclosed is an apparatus for drying particulate material. The apparatus comprises a rotatable drum positioned in an oven. Conduit means positioned in the drum offset from its axis of rotation form flow paths isolated from the inside of the drum leaving f... | 09/23/1986 |
| 4522587 | Rotating melter A horizontally disposed helical coil is positioned around and in communication with a hollow horizontal shaft extending lengthwise of a tank having oppositely disposed inlet and outlet ports. Hot oil is directed into the hollow shaft and circulated throug... | 06/11/1985 |
| 4492043 | Apparatus and method for drying particulate material Improved method for internal heating of rotary driers consisting in the use of an unique snorkel (placed inside the rotary drum) made by two opposite snorkels connected by any type of joint. This unique snorkel extends from feed end to discharge end of th... | 01/08/1985 |
| 4477984 | Multi purpose three pass drum dryer A multi purpose three pass drum dryer comprised of two independent and intermeshed systems utilizing an air circulation flowing contrary to the progression of the material through the dryer.... | 10/23/1984 |
| 4427376 | Apparatus for heating aggregate, recycled asphalt and the like A drum-type drier and/or mixer in which particulate material such as aggregate or recycled asphalt is introduced into the forward end of the drum. A burner at the rear end of the drum directs its flame forwardly through an elongated firing tube which exte... | 01/24/1984 |
| 4422846 | Method and apparatus for indirectly drying and preheating fine material A method and apparatus is disclosed for indirectly drying and preheating fine material, in particular, moisture containing coal or the like, comprises, providing a rotary drum which is mounted for rotation and has a plurality of heating tubes extending th... | 12/27/1983 |
| 4392823 | Method and apparatus for indirectly drying and preheating fine material A method and apparatus is disclosed for indirectly drying and preheating fine material, in particular, moisture containing coal or the like, comprises, providing a rotary drum which is mounted for rotation and has a plurality of heating tubes extending th... | 07/12/1983 |
| 4354826 | Process of drying and calcining bulk materials A process for drying and/or calcining bulk material in a rotary kiln when hot gases are passed countercurrent to the flow of bulk material thereto, and the bulk material is dried and/or calcined in the rotary kiln is disclosed. According to the invention,... | 10/19/1982 |
| 4283171 | Heating device A heating device comprising at least one drum open at both ends thereof. The drum is adapted to continuously rotate around a substantially horizontal axis. The device further comprises at least one burner arranged within the drum which itself comprises a ... | 08/11/1981 |
| 4191527 | Apparatus for the dehydration of waste and vegetable matter Apparatus for dehydrating organic waste material in a rotary oven. The oven is within an insulated chamber and the oven is heated by a burner. The waste gases from the oven are recycled and burnt in the burner. The dried product is usable for soil enrichm... | 03/04/1980 |
| 4175335 | Machine for drying granular materials A machine for drying granular materials such as sand and gravel. The machine includes coaxial inner and outer cylinders. Moist sand is introduced into an inlet end of the inner cylinder and gravel is introduced into the inlet end of the outer cylinder. Th... | 11/27/1979 |
| 4043745 | Apparatus and process for the drying of wet, loose material, in particular, coke power or fines A process and apparatus for the drying of coke fines without the generation of noxious quantities of dust by means of a burner flame and associated flue gases extending along an axis. The wet loose material is moved along the axis toward the burner and ro... | 08/23/1977 |
