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| Number | Title | Issue Date |
| 7828548 | Reduction kiln Disclosed is a process for reducing metallic oxide or sulfide materials in a rotary kiln and a rotary kiln for reducing such materials. The materials are heated in a reducing atmosphere as they travel along the axial length of the rotary kiln. The materials are disc... | 11/09/2010 |
| 7353622 | Method and device for the drying of laundry The invention proposes a spin dryer which makes it possible to drain the laundry to approximately the same extent as a laundry press. For this purpose, a rotatable drum of the spin dryer is driven at a high rotational speed such that the laundry inside the drum is e... | 04/08/2008 |
| 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 |
| 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 |
| 7204688 | Gas burner for dryer Gas burner for a dryer including a gas nozzle for receiving, and injecting gas, a mixing tube for mixing the gas injected from the gas nozzle and primary air, igniter fitted to an outlet of the mixing tube for igniting the gas mixed with the primary air coming out o... | 04/17/2007 |
| 7181864 | Dehydration of body hem flanges As a metal assembly, which defines partially open voids in which liquid accumulates is conveyed through a heat-treating station, the hot air is blown across the open end of the void to produce a zone of low pressure at the surface of the liquid. The reduction in pre... | 02/27/2007 |
| 7172413 | Laundry dryer having gas combustion apparatus A gas combustion apparatus of a laundry dryer is provided, by which an initial ignition power is improved to enhance an ignition property. The gas combustion apparatus includes a gas supply; a mixing pipe, having a mixing passage extending from an inlet end to an ou... | 02/06/2007 |
| 7155841 | Rotary impinging stream dryer An improved rotary shell or drum dryer (10) is provided having an elongated, horizontally disposed, axially rotatable shell (12) with product and air inlets (14, 18) and an outlet (16) at opposite ends of the shell. Internally, the dryer ... | 01/02/2007 |
| 7040891 | System for reducing fuel consumption and pollutant emissions from asphalt cement production A system for reducing fuel consumption and pollutant emissions from asphalt cement production facilities which utilizes a recycle stream to reduce organic compound and carbon monoxide concentrations and a sorbent to reduce pollutant concentration prior to dischargin... | 05/09/2006 |
| 6944969 | Method and installation for drying a mass of fibrous materials by mechanical compression of very moist air The present invention pertains to a method and an installation or system for drying fibrous material. The method comprises the step of ventilating very moist air through the fibrous material located in a drying zone. The moisture content of the moist air is less tha... | 09/20/2005 |
| 6935048 | Device for supporting burner and dryer with the same A device for supporting a burner (20) and a dryer having the same are disclosed, in which a structure for supporting the burner is simplified, thereby decreasing the manufacturing price and fabricating of the device is easy. The device for supporting the burn... | 08/30/2005 |
| 6929393 | Asphalt production plant An asphalt production plant includes an asphalt binder storage tank, a mixer for mixing asphalt binder and aggregate materials, an asphalt binder pumping system for conveying asphalt binder to the mixer and an asphalt binder metering system for controlling the rate ... | 08/16/2005 |
| 6918194 | Heating configuration for a drier A heating configuration for a drier, particularly for a laundry drier, has a burner with a burner head, a first heating channel with an inlet opening and an outlet opening, and a second heating channel with an inlet opening and an outlet opening. The cross-sectional... | 07/19/2005 |
| 6790034 | Kiln plant control system A controller for a kiln plant, typically a cement plant, has a thermodynamic controller which measures a number of variables including the kiln hood temperature and one or more output gas concentrations, and controls the fuel input to the kiln to maintain the hood t... | 09/14/2004 |
| 6688883 | Apparatus for oxygen enrichment of cement kiln system The invention in its various embodiments includes an apparatus and a method for improving combustion in a cement kiln system. The apparatus in one embodiment includes a precalciner and an oxygen source coupled to the precalciner. The method in one embodim... | 02/10/2004 |
| 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 |
| 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 |
| 6375456 | Combustion process applicable to the manufacture of cement Combustion process especially applicable to cement works, in which process it is desired to use fuels which are difficult to ignite. To do so, a flame comprising a primary zone and a secondary zone is created. The hot primary zone is created using an oxy-... | 04/23/2002 |
| 6371757 | Kiln fuel system A kiln fuel system and method for producing cement. The system includes a tank for storing a fuel and a suction heater for drawing and preheating the fuel from the tank. A pressure station pressurizes the preheated fuel and a heater heats the preheated an... | 04/16/2002 |
| 6322355 | Method and apparatus for disposing of waste dust generated in the manufacture of cement clinker A method of disposing of undesirable chemical compounds in waste dust generated in a first kiln in the manufacture of cement clinker by using the dust and slag as the feedstock material to a second kiln, heating the feedstock material in an oxidizing atmo... | 11/27/2001 |
| 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 |
| 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 |
| 6203315 | Rotary burner for solid fuel A device for the combustion of solid fuel in the form of granules, pellets, chips or other fragmented or finely divided form, comprising a rotary reactor drum (1), which forms the main combustion chamber (13) and has a rear end wall (65) and at the opposi... | 03/20/2001 |
| 6109913 | Method and apparatus for disposing of waste dust generated in the manufacture of cement clinker A method of disposing of undesirable chemical compounds in waste dust generated in a first kiln in the manufacture of cement clinker by using the dust and slag as the feedstock material to a second kiln, heating the feedstock material in an oxidizing atmo... | 08/29/2000 |
| 6077072 | Prefferential oxygen firing system for counter-current mineral calcining Superior heat transfer in a kiln is achieved by the use of at least one injector which injects both an oxidant, preferably containing oxygen, and a secondary fuel into the kiln. The injectors are provided so that the energy resulting from the combustion o... | 06/20/2000 |
| 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 |
| 6036484 | Process for reprocessing slag and/or ash from the thermal treatment of refuse In a process for reprocessing slag and/or ash from the thermal treatment of refuse, the refuse (1) is pyrolyzed, gasified or partially combusted in a first process step, heavy-metal-containing slag and/or ash (8) having a comparatively high carbon content... | 03/14/2000 |
| 6012918 | Method and apparatus for producing cement clinker Cement clinker is produced from powdered and fine-grained raw material by the use of a vertical stage cyclone preheater, a precalcinator, a kiln, and a cooler. The raw material is preheated by exhaust gases from the kiln and the cooler. Dust is filtered o... | 01/11/2000 |
| 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 |
| 5967062 | Rotating tire combuster An apparatus burns tires in a horizontally rotating combuster. The tires are loaded into a rotating combustion chamber through a traveling air lock and burned until they are reduced to ash. Combustion is enhanced by tumbling the burning tires in the rotat... | 10/19/1999 |
| 5947720 | Apparatus for preparing materials for road repair Portable-to-site apparatus is operative to produce ready-to-lay traffic-wear surfacing and/or road etc course materials. A drum-like container is supported for axial rotation within insulation walling of a heating chamber allowing front access to one end ... | 09/07/1999 |
| 5938433 | Soil remediation system having heat-loss dust decontamination apparatus A soil remediation system having apparatus for decontaminating particulate matter or dust entrained in and exhausted with a hot gas stream from a rotary drum wherein the particulate matter is subjected to heat-loss through an outer cylindrical wall of the... | 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 |
| 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 |
| 5902040 | Asphalt plant including flame arrester An asphalt plant includes a rotary dryer, a rotary mixer, a conduit for transferring gas from the mixer to the dryer, and a flame arrester in the conduit adjacent to the dryer to prevent a fire from propagating from the dryer back through the conduit.... | 05/11/1999 |
| 5822881 | Method for conditioning refuse A method and apparatus for treating refuse by non-combustibly shrinking plastics in the refuse. The trash is heated to a temperature of at least 250° to 500° for a minimum period of time. A rotatable chamber heats the refuse and transports the refuse fo... | 10/20/1998 |
| 5819437 | Quiet operating industrial dryer with a combustion burner grate An improved industrial dryer adapted for more efficient, quieter and safer operation. The dryer blower has a relatively large size blower wheel adapted for generating high volume air flows at substantially reduced noise levels so as not to disrupt the wor... | 10/13/1998 |
| 5791267 | Waste pyrolysis process and installation having a preheating unit The present invention relates to an installation intended for the pyrolysis of solids, comprising a rotary furnace (1) inside which pyrolysis is achieved, and a means (21) for heating the rotary furnace. The installation according to the invention further... | 08/11/1998 |
| 5785516 | Conveyable heating apparatus A conveyable heating apparatus which is operable in a working place of repairing a paved road and can be carried on a vehicle. An asphalt-reclaiming apparatus 1 embodying one example of the heating apparatus comprises a combustion chamber 2 having an open... | 07/28/1998 |
| 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 |
