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