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9028249 Methods and systems for recovery of CO2 gas in cement-manufacturing facilities, and processes for manufacturing cement  
An object of the present invention is to separate CO2 gas generated in a cement-manufacturing facility in a high concentration and recover the CO2 gas. The present invention includes: feeding a...
8764438 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...
8647430 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...
8187374 Process for manufacturing clinker with controlled CO2 emission  
The invention relates to a process for manufacturing clinker from a raw mix, implementing the following: preheating of the raw mix by combustion flue gases; precalcination of the raw mix; and...
6875267 Process and device for feeding dispersible solid fuels into the calcinator of a cement clinker production line  
In order to make sure, for cement clinker production lines with blown injection of dispersible solid fuels such as, for example, coal dust, into the calcinator which is provided with fuel, that an...
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...
6444026 Process for the production of cement clinker in the rotary kiln intake chamber  
In cement clinker production installations, especially with short rotary tubular kiln, in order to find a way in which the thermally highly stressed rotary kiln intake chamber can be protected...
6146133 Process for the recycling of residues for the production of portland cement clinker  
The present invention concerns a process for the production of cement clinker in rotary kilns with substitution of primary raw materials and fuels by use of residual materials containing minerals...
5853474 Use of stabilized EAFD as a raw material in the production of a portland cement clinker  
A method for producing portland cement includes adding stabilized electric arc furnace dust (EAFD) to the raw materials fed into the feed end of a rotary cement kiln to form a cement clinker. The...
5698027 Method and plant for manufacturing mineralized portland cement clinker  
The invention relates to a method and a plant for manufacturing mineralized portland cement clinker. The method and plant provides for preheating, calcining, burning and finally cooling the...
5614016 Method and plant for manufacturing cement clinker  
A method and plant for burning sludge or filter cakes during the cement clinker manufacture where the cement is manufactured in known manner by the cement raw meal being preheated, calcined and...
5374310 Hydrolyzed chlorosilicon by-product addition to cement  
The present invention is an improved process for preparing a portland cement composition where the process comprises heat calcining a mixture comprising a source of calcium and a source of silicon...
5199987 Method of producing cement clinker  
A rotary cement kiln is operated with predried paper sludge in a secondary combustion period. The predrying of the paper sludge from a moisture content of about 50% by weight to a moisture content...
5122190 Method for producing a hydraulic binder  
A method for producing a hydraulic binder using partially calcined raw meal entrained in the kiln off gases. The raw meal flow form the lowermost cyclone is interrupted at or near the junction of...
5030287 Cement mix and method for producing reinforced building sheets from a cement mix  
A method for producing building sheets containing cement, inert materials and additives and reinforced with plastic mesh, starting from a cement mix which does not contain more water than that...
4548580 Calcining apparatus for powdery materials  
There is here disclosed a calcining apparatus for a powdery material comprising a first preheating series composed of a calcining kiln and preheaters at a plurality of stages for heating the...
4512809 Process for producing, from aluminous siliceous materials, clinker containing alkali metal aluminate and dicalcium silicate, and use thereof  
Aluminous siliceous starting materials are mixed and ground with correction materials to produce a raw mixture comprising oxides of aluminium, silicon, calcium and alkali metal having certain mole...
4504319 Method and apparatus for burning cement clinker  
A method and apparatus for burning cement clinker from differing mineral base materials. One of the base materials has a relatively high proportion of components which form melt phases at a...
4440578 Method and apparatus for processing raw meal having a high alkali chloride and/or sulfate content  
The method is used in processing raw meal such as cement raw meal, powdered limestone, alumina hydrate or the like including those having relatively high alkali chloride and/or sulfate content up...
4389252 Plant for manufacturing cement clinker  
A plant for manufacturing cement clinker from cement raw material includes a preheater first stage separated by a wall into a first chamber and a second chamber. Only raw material is passed...
4369067 Method of and plant for manufacturing pulverous or granular material  
A method is disclosed for manufacturing pulverous or granular material in a plant supplied with raw material, for example, cement raw meal, including a kiln for burning the raw material to be...
4366000 Method and apparatus for preheating dry raw meal prior to introduction of the meal into a suspension cyclone preheater system supplying a rotary kiln  
The method is used in processing raw meal such as cement raw meal, powdered limestone, alumina hydrate or the like, and includes the steps of metering the dry raw meal into a processing system,...
4363668 Method and apparatus for burning raw materials  
Method and apparatus for burning raw materials in the production of clinker from cement raw materials in which a portion of the cement raw materials are dried and partially deacidified under...
4353750 Method of firing carbonate-containing minerals  
A method of firing granular carbonate minerals, for example a cement-calcine-forming meal, in which the comminuted solids are preheated in a fluidized bed or by like entrainment in a hot gas and...
4349387 Method for calcining fine-grained material, particularly for the manufacture of cement clinker  
A method for burning fine-grained material particularly for the manufacture of cement clinker wherein a stream of the raw cement meal is sequentially treated at progressively increasing...
4334860 System and method for the heat treatment of fine grained materials  
The present invention relates to a method for the heat treatment of finely divided materials, such as those used in the manufacture of cement. In the improved method of the present invention, two...
4333766 Calcium process for manufacturing silicate and/or aluminate based products  
A process for manufacturing calcium silicate and/or aluminate based products, such as Portland cement or aluminous cements. The raw material subjected to a first heating step in which it is heated...
4248641 Method and apparatus for the production of cement clinkers from moist agglomerated raw material  
A method and apparatus for the production of cement clinker from a raw material containing sufficient moisture to be agglomerated wherein the raw material is dried and subsequently subjected to...
4218210 System and method for the heat treatment of fine grained materials  
The present invention relates to a system and method for the heat treatment of finely divided materials, such as those used in the manufacture of cement. In the improved system of the present...
4197137 Process and apparatus for calcining finely divided cement raw materials including finely divided combustible materials  
Process and apparatus for calcining finely divided cement raw materials including finely divided combustible materials in a suspension preheater with a calcining furnace. Finely divided calcareous...
4101336 Method of burning pulverous alkali-containing raw materials and kiln plant therefor  
A method is disclosed for burning alkali-containing raw materials such as cement raw meal in a plant having a multiple string cyclone preheater, each string containing at least two cyclone...
4083676 Method for heat treating fine-grain material  
Fine grained material such as raw cement meal is preheated in a preheater and discharged from the latter into a rotary kiln for calcining and through which hot exhaust gases pass in counterflow to...
4071310 Installation for the manufacture of cement  
An installation for the manufacture of cement in a rotary tubular kiln comprises a combustion chamber upstream of the kiln, two preheaters for the raw material, one of the preheaters receiving hot...
4062691 Method for the thermal treatment of finely granular material, particularly for the calcining of cement  
A process and mechanism for thermally treating fine ground material for the calcining of cement in stages which passes finely ground calcareous and argillaceous material into a vertical chamber to...
4050882 Dual variable orifice for reinforced preheater  
Variable dual orifices in the restricted portion of the flue between the kiln and the preheater provides a controlled bypass of 0 to 100% of the kiln gases around the preheater and prevents short...
4043746 Method for the heat treatment of fine-grained materials containing alkali compounds  
A method for the heat treatment of fine-grained materials containing alkali compounds which liquify at critical temperatures comprises pre-heating the materials and discharging them to a rotary...
4022568 Method and apparatus for heat treating pulverous raw materials  
A method is disclosed for heat treating pulverous raw material such as cement raw meal prior to subjecting it to further heat treatment such as sintering. By directing the raw material to a...
4002420 Method of burning calcined and uncalcined pulverous raw material and rotary kiln plant therefor  
A method is disclosed for heat treating a preheated pulverous raw material containing at least a portion of lime to produce a partial calcination prior to passing the raw material down through an...
3998649 Process of manufacturing Portland cement clinker  
Portland cement raw material components completely calcined before being sintered in a rotary kiln by blending clay and limestone to high and low calcium blends and feeding each blend through...
3895955 Process for burning cement clinker  
A new process for burning cement clinker consisting of a rotary kiln, a raw material suspension preheater comprising multistage cyclone heat exchangers, and a fluidized calciner having a separate...
3716387 CEMENT CLINKER PRODUCTION  
Calcareous rock having an appreciable kerogen content, forming up to 75 percent of kerogen-bearing limestone deposits and previously unsuited for use in cement producing operations, is roasted at...
3584850 ROTARY KILN FOR SHOCK SINTERING  
This invention relates to a method of and apparatus for pyroprocessing raw material having a reaction temperature and containing moisture into sinter. The apparatus has a rotary kiln adapted to...
3473794 SYSTEM AND METHOD OF PRODUCING CEMENT CLINKER  
3445550 METHOD OF MAKING CEMENT  
3442498 COMBINED WASTE TREATMENT AND CEMENTMAKING METHOD AND MEANS  
3044756 Production of cement  
2993687 Wet process for making cement and apparatus for use therewith  
2758828 Process for manufacturing hydraulic cement in rotary kilns  
2668042 Title is not available  
2469989 Process of forming chemical reaction products of metal oxides  
15 Claims. 1 This invention relates to an improved method for producing compounds of oxides of metals of group II of the periodic system with at least one oxide of a metal of groups III and IV....

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