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| Number | Title | Issue Date |
| 7390357 | Method and plant for manufacturing cement clinker Described is a method for manufacturing cement clinker by which method cement raw meal is preheated and burned in a plant comprising a cyclone preheater (1) and a kiln (5). The method is peculiar in that that at least a portion of the raw meal is extra... | 06/24/2008 |
| 7384475 | Method and plant for preheating particulate or pulverulent material Described is a method as well as a plant for preheating particulate or pulverulent material such as cement raw meal or similar material in a cyclone preheater (1), comprising at least two cyclone stages, each comprising a riser duct (2a, 2 | 06/10/2008 |
| RE40208 | Pneumatic flash calciner thermally insulated in feed storage silo A self-contained calcination plant is enclosed in a feed-storage silo. The plant consists of a vertical reactor, a separation cyclone and a pair of heat exchangers connected by appropriate piping and immersed in the feed material stored in powdery form in the silo. ... | 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 |
| 7316564 | Method and installation for regulating the quantity of circulating solids in a circulating fluidized bed reactor system A method for regulating the quantity of circulating solids in a circulating fluidized bed reactor system, whereby a solid flow/gas flow mixture leaving the fluidized bed reactor is fed tangentially into at least one cyclone separator for separation of the solid from... | 01/08/2008 |
| 7264781 | Calcining plant and method Particulate material to be calcined is conditioned and then introduced into a stream of flue gases which transport the material along a sloping drying duct while drying the material. The dried material is then introduced into the same stream of flue gases upstream o... | 09/04/2007 |
| 7189074 | Method and process for co-combustion in a waste to-energy facility The co-combustion process may comprise the following unit operations: routing of hot gas (10) generated in the clinker cooling process to a rotary kiln (1); use of part of the rotary kiln exhaust gas to dry solid wastes in rotary dryers; leading the ga... | 03/13/2007 |
| 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 |
| 7052274 | Method and plant for manufacturing cement clinker A method and plant for manufacturing cement clinker are disclosed, in which cement raw meal is calcined in a calciner. The calciner comprises an upper zone and a lower zone, where fuel, combustion gas and raw meal are introduced into the upper zone of the calciner a... | 05/30/2006 |
| 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 |
| 7001177 | Method and apparatus for recovering energy from waste materials by combustion using a portion of tertiary air A method and apparatus for using in rotary kilns having a calciner and a tertiary air duct, which uses the hot air from the tertiary air duct for burning waste material in a combustion chamber formed therein, achieving a complete combustion of the waste material and... | 02/21/2006 |
| 6993857 | Milling and drying apparatus incorporating a cyclone A cyclone which includes an upper cylindrical portion opening into the wider end of a lower frustro-conical portion, with a primary air inlet such that the inlet air is substantially tangential to the circumference of the cyclone, and an exhaust outlet at or adjacen... | 02/07/2006 |
| 6916078 | Inkjet proofing with matched color and screen resolution One general aspect of the invention provides for creating half-tone ink-jet proofs on print-enhanced sheets based on an effective image cell pitch that substantially matches a cell pitch used to create press plates. Print process variables can be adjusted for the in... | 07/12/2005 |
| 6901868 | Plant for the thermal treatment of material and operation process thereof The plant for the thermal treatment of material, in particular scrap material, comprises at least a reaction zone within a rotary kiln having the longitudinal axis inclined of an angle in the range 0°±45° with regard to an horizontal plane and provided of first h... | 06/07/2005 |
| 6875015 | Cement producing system incorporating a waste derived fuel suspension burner for a down draft calciner A cement producing system includes a rotary kiln, a riser duct having lower portion communicably connected to the rotary kiln to pass process materials thereto, and a down draft calciner having a lower portion communicably connected to the lower portion of the riser... | 04/05/2005 |
| 6855302 | Method for emission control of dioxin and/or furan waste gas pollutants in a cement clinker production line In order to provide a comparatively simple and cost-effective method for cement clinker production lines where especially raw materials and/or fuel/secondary fuel containing chlorine compounds and a partial gas extraction with an electrostatic dust collector as wast... | 02/15/2005 |
| 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 |
| 6698365 | Apparatus for thermal treatment using superheated steam Material to be treated such as garbage is charged into a first rotary kiln 14 to be mainly dehydrated and charged into a second rotary kiln 18 to be carbonized. The first rotary kiln 14 has a first nozzle pipe 11 therein for spouting a first high temperat... | 03/02/2004 |
| 6691628 | Method and apparatus for thermal processing of powder raw materials In the manufacture of cement clinker from cement raw meal, sulfide-containing raw materials or raw materials with a high TOC (total organic carbon) level can be used for cement manufacture, which are uncontrollably incompletely burned in the upper cyclone... | 02/17/2004 |
| 6672865 | 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 strat... | 01/06/2004 |
| 6637503 | Lower cyclone heat exchanger A lower heat exchanger for preheating powdered raw materials has a system of cyclones. The exchanger is divided into a high temperature part and a low temperature part, mutually interconnected with an interconnecting tube of hot gas. Lowest member of low ... | 10/28/2003 |
| 6595772 | Method and apparatus for the thermal treatment of mealy raw materials To create a calcinator for a cement clinker production line which is connected to the rotary tubular kiln in series and which is equipped with double firings, in which it is possible expediently to dispose of lumpy combustibles such as unchipped used tire... | 07/22/2003 |
| 6574885 | Cyclone heat exchanger The cyclone heat exchanger according to the invention comprises a set of cyclones for preheating powdered raw material. The set of cyclones is divided into a high temperature part (1) and a low temperature part (2) mutually interconnected by a tube (4) wi... | 06/10/2003 |
| 6544032 | Method and installation for heat-treating fine-grained products A method and apparatus for heat treatment of fine-grained material. In order to reduce the nitrogen oxide content of the exhaust gas from the combustion zone, a region of the calcination zone is operated under reducing conditions and ammonia-containing ad... | 04/08/2003 |
| 6524099 | Method and apparatus for thermal treatment of mealy raw materials In order to create, for cement clinker production lines, a calcinator that is connected upstream from the rotary tubular kiln and is equipped with two firings, which enables on the one hand a high-grade calcinated raw meal and on the other hand an exhaust... | 02/25/2003 |
| 6485295 | Equipment for calcination An equipment for calcination for precalcining of powdered materials before their burning in a sintering equipment is inserted between the last but one cyclone (72) of connected cyclone exchanger (7) and the mixing channel (2), arranged over the input cham... | 11/26/2002 |
| 6484416 | Apparatus for producing cement clinker It is required with respect to the production of cement clinker from wet slurry raw materials that are calcined to cement clinker in a drying-rotary pipe furnace, which is preceded by a cyclone suspension type heat exchanger system, after the materials ha... | 11/26/2002 |
| 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 |
| 6470812 | Method and apparatus for recovering energy from wastes by combustion in industrial furnaces Method and apparatus to recover energy from waste by means of combustion of such waste in industrial furnaces, particularly of the rotary type, that has an external calciner, feeding such waste into the tertiary air duct of the calciner and burning the wa... | 10/29/2002 |
| 6468075 | Apparatus for thermal processing of raw material in meal form Cement clinker production apparatus having a precalcination stage connected upstream of a rotary kiln, in which precalcination stage a CO-containing reduction zone in the rotary kiln off-gas duct is employed for the purpose of reducing the pollutant NO | 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 |
| 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 |
| 6383283 | Control of cement clinker production by analysis of sulfur in the end product Cement clinker is produced using high sulfur fuels by combusting high sulfur fuel within a kiln. The feed material is introduced at an inlet of preheater of the kiln and is sintered by the combusting fuel to form sintered material. The sintered material i... | 05/07/2002 |
| 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 |
| 6363625 | Multiple drum mixing system A drying and mixing plant is provided comprising a tapered inner drum (1) and an oppositely tapered outer drum (4) attached together concentrically and rotated as a unit. A burner (37) directs a hot air stream into the small end (2) of the inner drum (1).... | 04/02/2002 |
| 6345981 | Controlled solid fuel thermolysis in preheater/precalciner kilns A method and apparatus for controlling the combustion of fuel modules charged into a preheater or precalciner kiln above the transition shelf, typically into the riser duct, is described. The apparatus includes a sensor for providing signals indicative of... | 02/12/2002 |
| 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 |
| 6318278 | Process for calcining an ore-based material In this process the material is passed through a precalcination device equipped with at least one fuel injector at the outlet of which a fuel injection zone is formed, then the at least partially calcined material is passed into the rotary kiln which at i... | 11/20/2001 |
| 6309210 | Kiln universal oxygen enrichment A kiln is provided with oxidant injection locations upstream of air blowers which blow air into the kiln. The addition of oxygen into the kiln increases the cooling capacity of a clinker cooler, and enhances combustion in the kiln.... | 10/30/2001 |
| 6293787 | Method of regulating the flue gas temperature and voltage supply in an electrostatic precipitator for a cement production plant A cement production plant and method of regulating the flue gas temperature in a cement production plant. The cement production plant includes a kiln, a flue gas conditioning device, a mill and an electrostatic precipitator. The flue gas from the kiln is ... | 09/25/2001 |
