| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 106739000 | Portland type cement per se (e.g., clinker preparation, etc.) | 38 |
| 20080245275 | Plant and Method for the Production of Cement Clinker from Cement Raw Material - The invention relates to a device and a method for producing clinker from raw cement material. The raw cement material is preheated in a preheater, is precalcined in a calcining apparatus, is completely burned in a sintering furnace, and is final cooled in a cooler Tertiary air of the cooler is fed to the calcining apparatus while eliminated dust is thermally treated in a dust burning reactor with the aid of combustion air and fuel. At least some of the tertiary air is fed to the dust burning reactor as combustion air while the dust that is to be treated and the combustion air penetrate the dust burning reactor in the same direction of flow. | 10-09-2008 |
| 20100071598 | CEMENT CLINKER PRODUCTION WITH REDUCED EMISSIONS - The carbon monoxide and hydrocarbon content of flue gas in a cement clinker production apparatus is lowered by feeding a high velocity stream of hot oxygen into the flue gas. Methods and apparatus for producing the hot oxygen stream are disclosed. | 03-25-2010 |
| 20110041737 | SINGLE-PHASE HYDRAULIC BINDER, METHODS FOR THE PRODUCTION THEREOF AND BUILDING MATERIAL PRODUCED THEREWITH - The invention relates to a monophase amorphous hydraulic binder containing silicon, calcium and oxygen atoms in an arrangement comprising silicate building units having an average connectedness of at least Q | 02-24-2011 |
| 20110061569 | METHOD FOR MANUFACTURING A CEMENT CLINKER, AND CEMENT CLINKER MANUFACTURING FACILITY - A method for manufacturing a cement clinker includes a rotary furnace, a cyclone preheater receiving the fumes from said rotary furnace, an air blowing clinker cooler, and at least one heat exchanger, referred to as a first heat exchanger. The raw materials are preheated and decarbonated in said cyclone preheater. The clinker is cooled in said clinker cooler. A first portion of the hot air generated by said clinker cooler, or so-called secondary air, is directed to the rotary furnace to be used as combustion air. A second portion of the hot air generated, or so-called tertiary air, is directed and carried separately from the first portion to a place in the facility where fuel is burned. A third portion of hot air generated in said clinker cooler, or so-called excess air, is carried into at least said first heat exchanger for the purpose of recovering power to produce electricity. | 03-17-2011 |
| 20110067603 | Methods and compositions using calcium carbonate - Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided. | 03-24-2011 |
| 20120132112 | METHOD FOR PRODUCING CEMENT CLINKER IN A PLANT, AND PLANT FOR PRODUCING CEMENT CLINKER AS SUCH - A method for producing cement clinker in a plant that includes: a first cyclone preheater and a second cyclone preheater for preheating first and second portions of a raw material, respectively; a precalcinator using a combustion gas for burning a fuel, the fumes released by the precalcinator being directed to the second cyclone preheater; a rotary furnace provided with a fuel burner, the fumes released by the rotary furnace being directed to the first cyclone preheater; and a clinker cooler that blows cooling air across the clinker at the outlet of the rotary furnace. According to the method, the precalcinator combustion gas contains between 90 and 100 vol % of oxygen. The precalcinator may consist of a fluidized bed, the fluidization gas being the combustion gas. The invention also relates to a plant as such. | 05-31-2012 |
| 20130032061 | METHOD AND SYSTEM FOR REPROCESSING HIGH CARBON COAL FLY ASH TO PRODUCE CEMENTITIOUS MATERIALS - The invention provides a system and method of thermally processing high carbon coal fly ash to produce hydraulically reactive or pozzolanic supplemental cementitious material (SCM) and synthesis gas. In this “ash to energy and cement” (ATEC) process, coal fly ash and ancillary fuels are fed into a thermal reactor along with oxide materials, such as limestone. Carbon in the ancillary fuel and in the coal fly ash is converted to synthesis gas that is combusted to generate steam or electricity. The remaining low-carbon ash and bed material exits the thermal reactor chamber and is further processed at high temperature in a kiln or slagging unit to produce partially fused nodules or clinker. The nodules or clinker are cooled and ground to a desired fineness for use as a cementitious materials. The ATEC process effectively converts high carbon coal fly ash waste to energy and value added SCM. | 02-07-2013 |
| 20150107493 | SHRINKAGE-COMPENSATING CONCRETE - A shrinkage compensating concrete does not require restraint. The expansive forces developed during hydration compensate for concrete shrinkage, obviating the need for any added internal or external restraint element. Using this new shrinkage compensating concrete, substantially crack-free slabs may be built without using restraining steel bars, fibers, or other separate restraining element. The shrinkage compensating concrete includes a cement that develops internal expansive forces that never exceed the tensile strength of the concrete, such that the internal expansion compensates for the concrete shrinkage. The expansive cement may be an ASTMS, M or S cement, or other expansive cements may also be used. | 04-23-2015 |
| 20150368157 | CALCINER AND A METHOD FOR CALCINATION OF A CARBON DIOXIDE RICH SORBENT - A method for calcination of a carbon dioxide rich sorbent (containing CaCO | 12-24-2015 |
| 106743000 | Control of a parameter of operation in response to a measurement or test or to vary a result in a process | 1 |
| 20110126738 | CEMENT SYSTEM AND METHOD FOR OPERATING A CEMENT SYSTEM - In the method according to the invention for operating a cement plant, the raw meal is preheated in a preheating zone, the preheated material is precalcined in a calcining zone and the precalcined material is finally sintered in a sintering zone. The cement plant is operated in such a manner that the precalcined material which is supplied to the sintering zone has an SO | 06-02-2011 |
| 106744000 | Employment of a fluidized bed | 1 |
| 20090255444 | METHOD FOR CAPTURING CO2 PRODUCED BY CEMENT PLANTS BY USING THE CALCIUM CYCLE - A method for capturing CO | 10-15-2009 |
| 106745000 | Waste material employed as raw material or fuel (not kiln dust) | 4 |
| 20100132592 | Method and facility for disposing wet sludge - An object of the present invention is to provide a wet sludge disposal method and facility capable of smoothly transferring wet sludge to a kiln inlet part, or the like, of a dry process kiln, by a low feeding pressure and without substantially increasing the moisture content in the wet sludge. To this end, the present invention is characterized, in a cement clinker manufacturing facility having a preheater ( | 06-03-2010 |
| 20100175591 | 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 risers, precalciners and/or the rotary tubular kiln. The device for carrying out the method is characterized by a tubular housing ( | 07-15-2010 |
| 20110265692 | METHOD AND PRODUCT FOR VARYING THE THICKENING TIME OF A CLASS G CEMENT USED IN COMPLETING A SUBTERRANEAN WELLBORE - Spent Claus catalyst having a high alumina content is used as an ingredient in the manufacture of Portland cements in place of all or a portion of a conventional source of alumina. The spent Claus catalyst is preferably of a small particle size and can be ground to the desired fineness before mixing with the other ingredients that are heated in a conventional kiln to produce the cement composition. Finely ground spent Claus catalyst can also be used as an additive at levels of 0.1% to 2% by weight to increase the thickening time of shallow casing cement slurries. | 11-03-2011 |
| 20130152826 | Process for utilizing organic waste materials - In a process for utilizing organic waste materials, in particular cellulose-containing, moist, organic waste materials, in a clinker production process in which the waste materials are introduced as fuel and burnt in the clinker production process, the waste materials are brought into contact with the hot exhaust gases of the clinker production process and dried in a drying step flowing in parallel therewith before they are introduced into the clinker production process. The drying step is carried out in a drying reactor in which the moist waste materials are passed together with the hot exhaust gases through a series of concentrically arranged tubes, with multiple changes in flow direction about 180°, and the temperature of the hot exhaust gases is set to a maximum value of 400° C. by mixing in of ambient air and/or air from the clinker production process before the drying step. (FIG. | 06-20-2013 |
| 106746000 | Electrical, magnetic or wave energy employed (e.g., electric arc, etc.) | 1 |
| 20110100265 | PROCESS AND SYSTEM FOR INCREASING DENSITY OF NON-CONDUCTIVE POROUS SOLIDS AND MATERIAL MADE THEREFROM. - A “green process” and system employing a first operation of electrophoresis in a liquid suspending selected solids to introduce the suspended solid particles as micro- or nano-particles, or both, into pore spaces of a porous non-conductive medium. A second operation uses electro-transport to move ions of solids into small pore spaces inaccessible via electrophoresis alone to grow solids in these smaller pore spaces to a size that may fill them, thus increasing the density and strength of the medium. The process yields a material that has improved strength, reduced porosity, high density and, in select applications, resistance to formation of mildew, mold, fungus and the like. Certain applications also enable decorative colors and florescence to be introduced to the media. Materials made from the process include high strength concrete construction panels, “backer boards,” work surfaces, counter tops, complex decorative configurations, strong thin walled items, and the like. | 05-05-2011 |
| 106748000 | Aftertreatment of clinker | 1 |
| 106749000 | Refire or recalcine clinker | 1 |
| 20130228102 | PROCESS FOR CONTROLLING A CRYSTAL FORM OF ALITE IN PORTLAND CEMENT CLINKER - The present invention relates to a process of controlling crystal form of Alite in Portland cement clinker, wherein the said Portland cement clinker is thermally treated in order to change the crystal form of Alite in Portland cement clinker, so as to improve performance of resulting Portland cement clinker. The said process of present invention is easy and feasible. | 09-05-2013 |
| 106751000 | Involving kiln dust (e.g., recovery, treatment, processing thereof or product, etc.) | 3 |
| 20080282938 | CEMENT MAKING METHOD - A method of making cement clinker in a wet rotary kiln that includes providing raw material at the front of the kiln and adding a second group of materials for processing at an intermediate location along the kiln. This second group may include materials that improve the clinker and requires less energy to produce. A kiln system that employs this method and a cement clinker made by the method. | 11-20-2008 |
| 20100083878 | EXHAUST GAS TREATMENT METHOD AND SYSTEM FOR CEMENT BURNING FACILITY - An object of this invention is to provide an exhaust gas treatment method and system for a cement burning facility which allows the handling property of collected powder dust to be improved and which enables smooth removal of hydrogen chloride that may result from burning of organic sludge. When part of exhaust gas in a lowermost part of a preheater | 04-08-2010 |
| 20150053119 | CEMENT KILN DUST TREATMENT SYSTEM AND METHOD - A method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water soluble alkaline-earth metal polysulfide; combining the heavy metal stream with the water soluble alkaline-earth metal sulfide to create a combined stream; and removing at least a portion of one heavy metal from the combined stream. | 02-26-2015 |
| 106756000 | Classifying, sorting, separating, screening, sizing, grading or subdividing solid material (e.g., centrifugal separation, flotation, etc.) | 2 |
| 20090133607 | METHOD AND PLANT FOR MANUFACTURING CEMENT CLINKER - Manufacturing methods and plants for carrying out methods of manufacturing cement clinker including diverting gases from a separation cyclone for a calcined cement material. The diverted gases are cooled to a temperature of 850° C. or less by introducing raw cement materials into the diverted gas stream. | 05-28-2009 |
| 20110056410 | CEMENTITOUS COMPOSITION AND APPARATUS AND METHOD FOR MANUFACTURING THE SAME - A cementitious composition capable of forming high early strength cement when admixed with water may comprise, for each 100% by weight, no more than about 60% by weight C | 03-10-2011 |
| 106758000 | Raw material and fuel premixed or specified fuel | 1 |
| 20100037804 | PROCESS FOR THE PRODUCTION OF CEMENT - The invention provides a process for the production of cement which comprises the calcination of calcium carbonate-containing raw meal in a calciner heated by combustion of a carbon-containing fuel with a gas comprising oxygen and from 0 to 80% by volume of carbon dioxide, and substantially free of nitrogen, and isolating the gas produced by combustion and calcination in the calciner. | 02-18-2010 |
| 106761000 | Recycling exhaust gas, reusing heat from process, or purifying exhaust gas | 5 |
| 20120247371 | METHOD AND INSTALLATION FOR PRODUCING CEMENT CLINKER - During the production of cement clinker by preheating cement raw meal in a preheater and calcining and sintering the preheated cement raw meal, the exhaust gases which are produced during the calcination and the sintering process are used for preheating and are subsequently cleaned in an SCR catalytic convertor. There are used during the clinker production replacement fuels which contain carbon-containing odorous substances and/or ammonia-containing compounds which are previously dried, wherein a drying exhaust gas which is produced during the drying operation and/or exhaust vapour condensate being used at least partially for exhaust gas quenching upstream of the SCR catalytic convertor, and the carbon-containing odorous substances and/or ammonia-containing compounds in the drying exhaust gas and/or exhaust vapour condensate being converted on the SCR catalytic convertor. | 10-04-2012 |
| 20140109800 | PROCESS AND PLANT FOR PRODUCING CEMENT CLINKER AND FOR PURIFYING THE OFFGASES FORMED - The invention relates to a process and a plant for producing cement clinker and for purifying the off-gases formed thereby, wherein
| 04-24-2014 |
| 20160039714 | Method for operating a plant for producing cement - A method for operating a plant for producing cement clinker from raw meal having, as viewed in the materials flow direction, at least one calciner for deacidifying the raw meal, and at least one rotary kiln for sintering the deacidified raw meal to form cement clinker. The deacidified raw meal, after passing through the calciner, flows via a cyclone preheating stage into the rotary kiln. Exhaust gases are guided from the rotary kiln into a reactor, arranged between the rotary kiln and the calciner, with fuel being fed into the reactor superstoichiometrically in relation to the dwell time of the exhaust gases in the reactor, so that carbon dioxide in the exhaust gases is reduced to form carbon monoxide. The carbon monoxide is used as a reducing agent for nitrogen oxides, which are chemically reduced in the reactor independently of the short dwell time in the calciner. | 02-11-2016 |
| 20160052822 | PROCESS AND DEVICE FOR CEMENT CLINKER PRODUCTION - In a process for the production of cement clinker, in which raw meal is preheated in a preheater ( | 02-25-2016 |
| 20160129393 | METHOD FOR DECREASING AN AMOUNT OF A HARMFUL SUBSTANCE OF AN OFF-GAS STREAM FORMED OR USED IN A THERMAL TREATMENT OF A MATERIAL - A method for decreasing an amount of a harmful substance of a chlorine-containing off-gas stream formed or used in a thermal treatment of a material may comprise dividing the chlorine-containing off-gas stream into a main stream and a substream, separating at least some chlorine from the main stream, lowering an amount of the harmful substance in the main stream by introducing a chlorine-containing additive into the main stream to enhance separation of the harmful substance, and filtering the substream such that a filter cake separated from the substream comprises at least part of the chlorine-containing additive. | 05-12-2016 |
| 106765000 | Calcium sulfate containing raw material | 1 |
| 20140305346 | Alkaline Earth Oxides For Green Processes For metals and other Material - The present invention teaches the method to use the sulfate or sulfites based raw materials, such as magnesium, calcium and other alkative earth sulfates or sulfites to produce the respective oxides in a carbon five basis, by using sulfur as the fuel and the reductant. The invention also utilizes renewable energy such as solar thermal or green electricity wherever possible. This approach provides a green process, of ultra-low carbon dioxide emission, for the production of magnesium, other alkaline earth metals and other material which requires alkaline earth oxide, such as in the production of carbon free Portland cement requiring lime. The invention also provides a useful outlet for waste streams leading to sustainable processes. The cost of the production of these precursors are kept low by concurrently producing a saleable by-product—sulfuric-acid. | 10-16-2014 |
| 106768000 | Potassium, halogen or sulfur containing raw material (K, F, Cl, Br, I, S) | 1 |
| 20100282132 | ENVIRONMENTAL COMPOSITION AND METHOD FOR MAKING THE SAME - A cement composition is made from a heat activated chemical salt selected from the group consisting of magnesium oxide, potassium oxide, sodium oxide, and calcium oxide and mixtures thereof. This activated salt is the mixed with hydraulic cement in an amount of 2½ to 3½ parts activated salt to one part hydraulic cement and the resulting mixture of hydraulic cement and activated salt is mixed with water and aggregate. In addition, industrial waste may be added to the mix in minor amounts of 5 to 30 percent | 11-11-2010 |
| 106769000 | Iron or manganese containing raw material (Fe, Mn) | 1 |
| 20110259247 | HYDRAULIC BINDER WITH A BASE OF SULFOALUMINATE CLINKER AND PORTLAND CLINKER - The present invention relates to a composition including at least a Portland clinker and a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF). | 10-27-2011 |
| 106771000 | Preprocessing or processing of raw material before firing (e.g., preheating, etc.) | 7 |
| 20100050906 | INSTALLATION FOR PRODUCING CEMENT CLINKER, AND METHOD FOR OPERATING ONE SUCH INSTALLATION - To provide a cement clinker production line with a calcining stage which is connected upstream of the rotary tubular kiln and has an integrated calcining combustion chamber, with formation of a CO-containing reduction zone whose size and length and reduction potential can be adapted with simple means to different NO | 03-04-2010 |
| 20100095873 | Method for pretreating charges contaminated with carbon carriers - In a method for pretreating charges contaminated with carbon carriers such as, for instance, carbon-carrier-contaminated earths, soils, rocks or minerals having low calorific values for use in clinker kilns, the mentioned charges are introduced into a reactor ( | 04-22-2010 |
| 20100180803 | Method and Plant for the Simultaneous Production of Electricity and Cement Clinker - Described is a method as well as a plant for the simultaneous production of electricity and cement clinker by which method cement raw meal is calcined in a calciner ( | 07-22-2010 |
| 20110113987 | PROCESS FOR MANUFACTURING CEMENT CLINKER IN A PLANT, AND CEMENT CLINKER MANUFACTURING PLANT AS SUCH - The invention relates to a process for manufacturing cement clinker in a plant having a cyclone preheater, a precalcination reactor, a rotary furnace and a clinker cooler. According to the invention, the flue gases produced by the rotary furnace are separated from the gases from the preheater so as not to mix them, the precalcination reactor is fed with an oxygen-rich gas and a portion of the gases leaving the cyclone preheater is recycled into said precalcination reactor, or even into the preheater so as to obtain a flux suitable for suspending matter in the preheater. The non-recycled other portion of the gases, rich in carbon dioxide, is adapted for the purpose of limiting the amount of CO2 discharged, by means such as sequestration means. | 05-19-2011 |
| 20110113988 | PROCESS FOR MANUFACTURING CEMENT CLINKER IN A PLANT, AND CEMENT CLINKER MANUFACTURING PLANT AS SUCH - The invention relates to a process for manufacturing cement clinker in a plant having a cyclone preheater, a precalcination reactor, a rotary furnace and a clinker cooler. In the process, the flue gases from the furnace are conducted to the precalcination reactor, or even to the cyclone preheater. According to the invention, the precalcination reactor is fed with an oxygen-rich gas, the nitrogen content of which is less than 30%, constituting the sole oxygen source for said reactor, and a portion leaving the cyclone preheater is recycled into the plant so as to obtain a suitable flux necessary for suspending matter in said preheater, while the other portion, rich in carbon dioxide, is adapted for the purpose of a treatment for limiting the amount of carbon dioxide discharged into the atmosphere, such as particularly sequestration. | 05-19-2011 |
| 20110168060 | DEVICE AND SYSTEM FOR PRODUCING CEMENT CLINKER - In the method according to the invention for producing cement clinker, raw cement meal is preheated in a preheater, the preheated raw cement meal is precalcined in a calciner and the precalcined raw cement meal is burnt in a kiln, fuel and combustion air having an oxygen content of at least 75 mol % being used in the calciner, and the raw cement meal being precalcined in a fluidised bed in the calciner. The exhaust gases occurring in the kiln are delivered to the preheater, bypassing the calciner, and the exhaust gases of the calciner are delivered to a CO | 07-14-2011 |
| 20150299040 | MOLTEN SALT SYNTHESIS FOR MANUFACTURE OF CEMENT PRECURSORS - A method of manufacturing calcium silicates, calcium aluminates, calcium aluminosilicates and calcium ferrites and the products thereby derived utilizing molten-salt synthesis and/or molten-salt sintering. Molten-salt synthesis enables efficiently manufacture calcium silicate (Ca—SiO | 10-22-2015 |
