Patents for C04B 11 - Calcium sulfate cements (2,042)
01/1990
01/03/1990EP0348756A1 Process for the production of a binder and its utilisation
12/1989
12/27/1989EP0347655A2 Method of making a rapidly hardening hydraulic binder upon mixing with water
12/06/1989EP0344430A2 Process for the preparation of gypsum stucco suited for the production of plaster board, starting from gypsum obtained in gas desulfurization plants
11/1989
11/23/1989EP0342272A1 Process for the treatment of alpha-calciumsulphate-hemihydrate
11/16/1989WO1989010905A1 Process for preparing calcium sulphate alpha hemihydrate
11/16/1989DE3815683A1 Method of drying alpha -hemihydrate
11/16/1989DE3812990C1 Disposal of waste gas residues
09/1989
09/20/1989CN1035653A Making gypsum potter decorative material by using gypsum and gypsum residue
09/06/1989EP0331294A2 Improvements in method and apparatus for calcination
09/05/1989CA1258961A1 PROCESS FOR PRODUCING .alpha.-FORM GYPSUM HEMIHYDRATE
07/1989
07/27/1989DE3800794A1 Verfahren und anlage zur herstellung von calciumsulfat-halbhydrat in alpha-konfiguration Method and plant for the production of calcium sulphate hemihydrate in alpha-configuration
07/06/1989DE3743818A1 Conversion of waste materials from dry or pseudo-dry desulphurisation plants based on lime into building materials for underground mining
06/1989
06/27/1989US4842842 Process for producing α-form gypsum hemihydrate
06/21/1989EP0320982A1 Use of gypsum compositions as adhesives or as jointing materials
05/1989
05/24/1989DE3738301A1 Process and appliance for calcining gypsum
04/1989
04/12/1989EP0310980A1 Method and double roll press for the manufacturing of lumpy material from finely divided flue gas gypsum
03/1989
03/23/1989DE3729877A1 Autoclave
03/15/1989EP0306791A1 Self-levelling mortar mixture
01/1989
01/31/1989CA1249414A1 Process and reactor for making calcium sulfate hemihydrate
01/12/1989DE3721421A1 Process for producing dry calcium-sulphate dihydrates from flue-gas gypsum
01/10/1989US4797265 Digestion of phosphate rock with sulfuric acid to get gypsum
12/1988
12/21/1988CN88102156A Oven for drying particulate materials
12/15/1988DE3819652A1 Process for producing calcium sulphate alpha-hemihydrate, suitable as building material, from moist, finely divided flue-gas desulphurisation gypsum
12/14/1988EP0294415A1 Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the scrubber units of a wet flue gas desulphurating plant.
12/08/1988DE3816513A1 Calcium sulphate alpha-mono:hydrate mfr. by autoclaving di:hydrate
11/1988
11/28/1988EP0277208A4 Highly efficient calcination of gypsum to hemihydrate.
11/24/1988DE3714035A1 Process for producing calcium sulphates capable of setting and the use thereof
11/02/1988CN87108332A Hydraulic binders and building elements formed of non-traditional materials
10/1988
10/19/1988EP0286636A1 Process and device for drying and/or burning powdery materials.
10/13/1988DE3711367A1 Process for preparing calcium sulphate hemihydrate
10/12/1988EP0286618A1 Installation for preparing a highly resistant plaster
10/12/1988EP0286396A1 Cementitious compositions
10/06/1988WO1988007502A1 Process for converting calcium sulphate dihydrate into alpha-hemihydrate
09/1988
09/29/1988DE3709393A1 Verfahren zur umwandlung von calciumsulfatdihydrat in (alpha)-halbhydrat Process for the conversion of calcium sulfate dihydrate in (alpha) hemihydrate
09/28/1988EP0284464A1 Furnace for the dehydration of powders, sand and agglomerates
09/22/1988WO1988007163A1 Oven for dehydrating pulverulents, sand or granules
09/21/1988EP0282674A2 Improvements in calcination apparatus
09/07/1988WO1988006573A1 Installation for the preparation of high-strength plaster
08/1988
08/10/1988EP0277208A1 Highly efficient calcination of gypsum to hemihydrate.
07/1988
07/25/1988EP0270565A4 Volume-stable hardened hydraulic cement.
07/19/1988CA1239271A1 Submerged combustion calcination
07/13/1988EP0274177A2 Process for the production of highly concentrated phosphoric acid
06/1988
06/30/1988WO1988004648A1 Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the washing units a wet flue gas desulphurating plant
06/22/1988CN87102928A Process for the production of highly concentrated phosphoric acid
06/16/1988WO1988004285A1 Hydraulic binders and building elements formed of non-traditional materials
06/15/1988EP0271329A2 Hydraulic binders and building elements formed of non-traditional materials
06/15/1988EP0270565A1 Volume-stable hardened hydraulic cement
06/08/1988EP0269736A1 Composition for making plaster articles
05/1988
05/18/1988CN87103057A Gypsum calcining method and its equipment
05/17/1988US4744963 Highly efficient calcination of gypsum to hemihydrate
05/17/1988US4744961 Submerged combustion calcination
04/1988
04/28/1988DE3635237A1 Process for producing building plasters and special plasters
03/1988
03/31/1988DE3631883A1 Process for producing alpha-gypsum
03/30/1988EP0261110A1 Flue-gas purifying procedure
03/02/1988EP0258064A2 High-strength, fire-resistant gypsum composition
02/1988
02/25/1988WO1988001257A1 Highly efficient calcination of gypsum to hemihydrate
02/17/1988EP0255946A1 Compressed products of dried flue gas gypsum and process for their production
01/1988
01/28/1988DE3625186A1 Process for preparing settable calcium sulphates and their use
01/14/1988DE3622277A1 Process for preparing alpha-hemihydrate plaster from calcium sulphate dihydrate (gypsum) from flue gas desulphurisation plants
01/13/1988CN86104515A A low clinker aggregate portland cement and its technology
12/1987
12/23/1987DE3620778A1 Process for conversion of industrial gypsum
12/09/1987CN86103649A Composition and the production method of the arlit calsium aluminosulfite cement
12/03/1987WO1987007257A1 Composition for making plaster articles
11/1987
11/11/1987EP0244726A2 Process for the hydrothermal conversion of gypsum from flue-gas desulphurization into alpha semihydrate calcium sulphate
11/11/1987EP0244722A2 Continuous process and apparatus for the preparation of gypsum for industrial use from residual gypsum
10/1987
10/22/1987DE3612931A1 Mining mortar from waste dirt of coal extraction
10/21/1987EP0241496A1 Process for simultaneous extraction of so 2? and no x? contained in waste gases
10/21/1987CN86102478A Composition and manufacturing method of new style inorganic artificial marble
10/08/1987WO1987005893A1 Volume-stable hardened hydraulic cement
09/1987
09/24/1987WO1987005530A1 Flue-gas purifying procedure
09/23/1987EP0237802A1 Process for the preparation of calcium sulphate anhydrite and curable calcium sulphates
09/03/1987DE3605393C1 Process for the preparation of anhydrous calcium sulphate (anhydrite)
08/1987
08/27/1987WO1987005008A1 Lightweight joint compound having improved paintability
08/27/1987DE3704731A1 Backfilling with flotation wastes
08/20/1987DE3604825A1 Process for disposing of crude gypsum in flotation tailings in underground mining
08/18/1987CA1225670A1 Fire resistant gypsum board containing calcium sulfate anhydrite
08/13/1987DE3603596A1 Process for granulating finely divided gypsum
08/11/1987US4686253 Lightweight joint compound having improved paintability
08/05/1987EP0230793A2 Calcination method and apparatus for gypsum or similar materials
07/1987
07/02/1987DE3538136A1 Recovery of valuable material from the simultaneous SO2 and NOx scrubbing of preferably flue gases downstream of power stations
07/01/1987EP0226690A1 Process for the treatment of alpha calciumsulfat hemihydrate and the obtained product therefrom
06/1987
06/18/1987WO1987003508A1 Process and device for drying and/or burning powdery materials
05/1987
05/26/1987US4668182 Apparatus for calcining gypsum
05/07/1987DE3539261A1 Anhydrite for the production of dam construction materials in mining
04/1987
04/23/1987WO1987002269A1 Process for simultaneous extraction of so2 and nox contained in waste gases
04/23/1987DE3536321A1 Process and reactor for producing alpha-hemihydrate gypsum from calcium sulphate dihydrate from flue gas desulphurisation plants operating by the wet scrubbing process with lime
04/02/1987DE3534390A1 Process for producing calcium sulphate alpha-hemihydrate from calcium sulphate dihydrate
01/1987
01/06/1987US4634583 Deacidified hot cement meal
01/02/1987DE3522496A1 Equipment for producing gypsum hemihydrate
01/02/1987DE3522495A1 Process for the unpressurised preparation of alpha-gypsum hemihydrate and equipment for carrying out the process
01/02/1987DE3522494A1 Process for controlling crystallization from solutions and apparatus for carrying out the process
12/1986
12/23/1986CA1215623A1 Manufacture of gypsum board from fgd gypsum
12/16/1986US4629419 Calcination method and apparatus
12/10/1986CN85104528A Sprayable plastics
12/02/1986US4626199 Submerged combustion calcination
10/1986
10/22/1986EP0198780A1 Process for the fast hardening of natural anhydrite
10/08/1986EP0196372A2 Process and apparatus for calcining gypsum
07/1986
07/30/1986EP0188618A1 High-strength hydraulic cement composition
07/02/1986CA1206980A Conversion of fluoroanhydrite to plaster
05/1986
05/14/1986EP0181088A1 A process for the manufacture of a quick setting high strength hardening composition
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