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| Number | Title | Issue Date |
| 8162659 | Method for introducing waste and/or alternative fuels into a clinker production method and device for carrying out said method In a method for introducing waste substances and/or alternative fuels into a clinker production process, the raw materials, in the form of slurries or suspensions, are subjected to mechanical deagglomeration as a pumpable mass. The pumpable mass is ejected into rise... | 04/24/2012 |
| 7351056 | Method and apparatus for introducing materials into a rotary kiln An apparatus for introducing a material into a kiln using low pressure air injection. In a preferred embodiment, that apparatus has a movable vessel that is movable between a collection position and a discharge position. The vessel has an open top and an open base. ... | 04/01/2008 |
| 7331119 | Apparatus and method thermally removing coatings and/or impurities An apparatus for thermally de-coating and/or drying coated and/or contaminated materials comprises a support and an oven pivotally mounted to the support. The oven has charging portion for receiving material to be treated and a changeover portion. Incorporated withi... | 02/19/2008 |
| 7229281 | Method of mixing high temperature gases in mineral processing kilns A method is described for reducing NOx emissions and improving energy efficiency during mineral processing in a rotary kiln. The method comprises injection of air with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification o... | 06/12/2007 |
| 7150416 | Liquid fuel injection Liquid fuel injectors are provided. The liquid fuel injectors allow the injection of a fine spray of liquid fuel. The liquid fuel injectors utilize a schrader valve movable between an open position and a closed position. When the schrader valve is in the closed posi... | 12/19/2006 |
| 6474984 | Air injection for nitrogen oxide reduction and improved product quality A calcining system is operated in a substoichiometric mode for reducing nitrogen oxide generation and removing sulfur from materials to be processed by creating an oxygen deficient atmosphere. The calcining system includes a rotary kiln rotating on a slig... | 11/05/2002 |
| 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 |
| 6380517 | High temperature rotating vacuum kiln and method for heat treating solid particulate material under a vacuum A rotating vacuum kiln for heat treating solid particulate material under vacuum conditions uses a rotating refractory metal cylindrical vessel with a cool inlet zone, hot intermediate zone, and cool exit zone, with a first series of inner radiation shiel... | 04/30/2002 |
| 6379610 | Apparatus and process for treating a particulate material within a rotating retort Apparatus (1) and process for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5) for tilting movement in a ver... | 04/30/2002 |
| 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 |
| 6279492 | Method of thermally decomposing waste materials A method of burning tires in a horizontally rotating combuster includes the steps of loading the tires into a rotating combustion chamber through a traveling air lock and burning them until they are reduced to ash; enhancing combustion by tumbling the bur... | 08/28/2001 |
| 6273009 | Method for automatized combustion and combustion apparatus A method for automatized combustion of solid fuel in a combustion apparatus which comprises a burner with a device, which is rotatable about the center axis of the burner for stirring the fuel in the burner which is connected to a boiler and has a feeding... | 08/14/2001 |
| 6253689 | Incinerator A waste incinerator which includes a housing formed by a heat insulating outer wall, air ducts; a decomposing chamber; a fire room; and a catalytic converter, all disposed in the housing. Waste is introduced into the fire room and incinerated there, and t... | 07/03/2001 |
| 6241514 | Oxidant-driven dust recycling process and device for rotary kilns A kiln adapted to recycle kiln dust includes a recycle dust pipe in fluid communication with an oxidant stream to increase the concentration of oxygen in the fluidized recycle dust before the recycle dust stream is directed into the kiln flame. Increasing... | 06/05/2001 |
| 6152729 | Spray cooled furnace discharge assembly A discharge assembly for removing material from a hearth in a rotary hearth furnace including a discharge auger and a coolant spray. The discharge auger is positioned above the hearth of the rotary hearth furnace and includes a central shaft having at lea... | 11/28/2000 |
| 6116896 | System and method for oxidant injection in rotary kilns A system and method for increasing the amount of oxygen in a kiln chamber is disclosed. The radial surface of a rotatable kiln is provided with at least one oxidant injection port extending through the radial surface into the kiln chamber. A cam is connec... | 09/12/2000 |
| 6090209 | Thermal conditioning apparatus A vapor control apparatus including an endless rim, a stagnation plate and a cover having an exhaust port. The endless rim has a first edge engaging the cover, a second edge opposite the first edge, an interior region and an exterior region defined by the... | 07/18/2000 |
| 6017213 | Method and apparatus for cooling exhaust gas in a kiln by-pass A probe having a double-tubed structure is provided to communicate with a kiln exhaust gas flowing path. A part of kiln exhaust gas is extracted through an inner tube of the probe, while cooling gas is supplied to a fluid flowing path formed between the i... | 01/25/2000 |
| 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 |
| 5937771 | Method of processing kiln exhaust gases by chlorine bypass system and apparatus therefor In the processing of exhaust gases by a chlorine bypass system, a portion of kiln exhaust gases G is extracted from a kiln 1, after the extracted exhaust gases G are instantly cooled to 600° C. to 700° C. or less, the dust W in the cooled exhaust gases ... | 08/17/1999 |
| 5927216 | Burner apparatus A burner apparatus uses fuel derived from waste resin. The burner includes a cylindrical body in combination with an oxygen supplier, which form an oxygen deficient atmosphere. While rotating the cylindrical body, a small portion of waste resin is partial... | 07/27/1999 |
| 5924861 | Furnace discharge assembly A discharge assembly for removing material from a hearth in a rotary hearth furnace. The discharge assembly includes, in combination, a discharge auger and a fluid cooled hood. The discharge auger is positioned above the hearth of the rotary hearth furnac... | 07/20/1999 |
| 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 |
| 5895214 | Kiln closure mechanism A closure mechanism (16) for controlling charging of material through a port into a rotary kiln such as a cement kiln comprises a first and second portion (24,26), and a passage (29) which communicates with the port (12) to enable material to pass into th... | 04/20/1999 |
| 5806442 | Apparatus for feeding solid wastes into a rotary kiln A feeding apparatus for feeding whole tires into a cement kiln comprising a feed opening in the shell of the kiln, a passageway including a sleeve extending within and outside the kiln, an arcuate sector valve device for closing the passageway and timed t... | 09/15/1998 |
| 5662052 | Method and system including a double rotary kiln pyrolysis or gasification of waste material A method of destructively distilling an organic material in particulate form wherein the particulates are introduced through an inlet into one end of an inner rotating kiln ganged to and coaxial with an outer rotating kiln. The inner and outer kilns defin... | 09/02/1997 |
| 5603615 | Smoke pollution device for tunnel kiln The present invention relates to a smoke and heat source recycling device for a tunnel kiln in order to prevent smoke pollution. It has an exhaust fan in the preheating zone, the exhaust fan absorbing heat from the preheating zone and delivering such heat... | 02/18/1997 |
| 5580242 | Rotary kiln A rotary kiln has a generally cylindrical housing centered on and extending along an axis inclined to the horizontal and having an upper upstream end and a lower downstream end and a drive that rotates the kiln about its axis. Particles to be heat-treated... | 12/03/1996 |
| 5473998 | Cement kiln having tire injection system A cement kiln having a tire injection system. The tire injection system comprises an entrance chute having an outer end portion protruding outwardly of a wall of the kiln and an inner end portion which protrudes into the kiln. The entrance chute further i... | 12/12/1995 |
| 5463819 | Dehydration treatment apparatus for sludge A dehydration treatment apparatus for sludge wherein organic sludge and a modifying/setting agent are charged into a rotating drum and the sludge is dehydrated and dried. The apparatus comprises a rotating drum, a sludge charging hopper arranged on the in... | 11/07/1995 |
| 5286200 | Rotary kiln A rotary kiln with primary air feed at the end wall of the rotary kiln is distinguished by the feature that at least two primary air nozzles are oriented relative to each other and to the fuel bed so that two oppositely directed vortices are generated wit... | 02/15/1994 |
| 5261738 | Asphalt drum mixer with bypass for controlling the temperature of the exhaust gas A drum mixer which is useful in the continuous production of asphalt paving composition. The mixer includes a hollow drum which is mounted for rotation about an inclined axis, and the aggregate is introduced into the upper end of the drum so that as the d... | 11/16/1993 |
| 5259756 | Rotary kiln off-gas vent system A rotary kiln has a rotatable cylinder through which a product passes in counter-current to a hot gas stream which dries the product. At the product entrance end, a vent annulus enters into the kiln for a length sufficient to allow entrained particles in ... | 11/09/1993 |
| 5254172 | Rotating furnace tube having a non-rotating slidable work holder for processing semiconductor substrates An semiconductor substrate processing apparatus of the type including a furnace tube associated with a fluid supply unit and a fluid discharge unit, wherein the furnace tube is rotatably supported by pairs of confronting rollers and rotated by a motor und... | 10/19/1993 |
| 5227026 | Retort heat exchanger apparatus A heat exchanger including one or more rotating drums with a freely rotating helix inside the drum to move material to be heated or cooled longitudinally through the drum, as well as to help clean the surface of the drum, together with carriers to assist ... | 07/13/1993 |
| 5207176 | Hazardous waste incinerator and control system A hazardous waste incinerator (100) includes a rotary kiln (120) with a helical flight (250) within. The kiln (120) is fed hazardous waste by either a continuous feed system (164) or a positive feed system (162). The kiln (120) is comprised of six retort ... | 05/04/1993 |
| 5174750 | Circumferential seal system for a rotary combustor A circumferential seal system wherein both low differential pressure circumferential seals and high differential pressure circumferential seals are utilized to provide the proper sealing for various wind box plenum zones supplying combustion air to a rota... | 12/29/1992 |
| 5073107 | Apparatus for making green briquettes for forming Si, SiC or ferrosilicon A process and apparatus for the preparation of green briquettes for the production of silicon or silicon carbide or ferrosilicon in electric pit furnaces, quartz sand, a carbon carrier and a bituminous binder being mixed together, the mixture being shaped... | 12/17/1991 |
| 5018968 | Revolving grate cooler for cooling of clinker or similar products A revolving grate cooler for cooling of clinker or similar products comprising a tubular shaped body having a plurality of holes. A plurality of curved metal cooling plates having a plurality of openings are secured to a front inner surface of the body, a... | 05/28/1991 |
| 5007823 | Dust recycling to rotary kilns A process and apparatus are described for recycling dust generated in rotary kiln processes such as cement manufacture. The invention resides in enriching the atmosphere in the kiln with oxygen so as to increase the heat generated and accommodate the intr... | 04/16/1991 |
