| Patents for C04B 11 - Calcium sulfate cements (2,042) |
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| 02/11/1986 | US4569831 Process and apparatus for calcining gypsum |
| 01/29/1986 | EP0169508A2 Building material from phosho-hemihydrate, process for its production and its use |
| 01/16/1986 | WO1986000290A1 High-strength hydraulic cement composition |
| 01/07/1986 | CA1198877A1 Process for purifying phosphogypsum |
| 12/11/1985 | EP0163963A2 Process for producing shaped products having a plaster binder |
| 11/26/1985 | CA1197273A1 Dry mix for hydration of plaster |
| 09/24/1985 | CA1194043A1 Gypsum fire break composition |
| 08/06/1985 | US4533528 Process for continuously calcining gypsum to low dispersed consistency stucco |
| 07/02/1985 | US4526619 Gypsum hemihydrates with potassium salt, gypsum dihydrate |
| 06/18/1985 | US4523906 Device for drying gypsum |
| 06/18/1985 | CA1189097A1 Gypsum cement floor underlayment composition and methods |
| 05/15/1985 | EP0047747B1 Process for producing plaster mortars and products obtained therefrom |
| 04/09/1985 | CA1185070A1 Process for rapid conversion of fluoroanhydrite to gypsum |
| 04/02/1985 | US4508574 Process for improving the fluidity and conveyability of moist calcium sulfate precipitates |
| 03/05/1985 | US4502901 Manufacture of gypsum board from FGD gypsum |
| 01/22/1985 | US4495162 Preparation of a calcium sulfate anhydrite material of low chloride content |
| 11/20/1984 | CA1178024A1 Process for the production of dry flue gas gypsum |
| 11/14/1984 | EP0125226A1 A filling composition |
| 10/02/1984 | CA1175209A1 Continuous process for the production of light-weight calcium sulfate |
| 06/19/1984 | US4455285 Heat treatment of material |
| 06/13/1984 | EP0110128A2 Continuous process for the recuperation of industrially utilisable gypsum from industrial waste gypsum |
| 06/13/1984 | EP0096075A4 Conversion of fluoroanhydrite to plaster. |
| 05/30/1984 | EP0109491A2 Process for improving the fluidity and transportability of wet calcium sulphate precipitates |
| 05/22/1984 | CA1167641A1 Calcining calcium sulphate dihydrate |
| 05/16/1984 | EP0108249A1 Process for drying moist gypsum, especially gypsum from a wet flue gas desulphurisation plant, and device for carrying out the process |
| 03/21/1984 | EP0103119A1 Binder mixture from sulphatic, lime-yielding pozzolanic materials rich in aluminate |
| 03/13/1984 | CA1163417A1 Treating calcined gypsum with solubilizing agent |
| 03/06/1984 | US4435183 Process for rapid dewatering and drying of calcium sulfate hemihydrate |
| 02/21/1984 | US4432954 Heating calcium sulfate dihydrate in sulfuric acid dispersion, crystallization, and separation fine particle sizes |
| 12/27/1983 | US4423016 Process for the production of dry flue gas gypsum |
| 12/21/1983 | EP0096075A1 Conversion of fluoroanhydrite to plaster |
| 11/29/1983 | CA1157893A1 Gypsum calcination method and composition |
| 11/01/1983 | CA1156269A1 Binders based on residual gypsum and synthetic anhydrite |
| 08/30/1983 | CA1153022A1 Thermal insulation material |
| 08/10/1983 | EP0085382A1 Installation for the production of alpha-calcium sulfate |
| 07/19/1983 | CA1150039A1 Simultaneous water treatment and grinding of calcined gypsum |
| 07/13/1983 | EP0083549A1 Calorifically highly efficient rotary furnace for producing burned gypsum |
| 07/07/1983 | WO1983002266A1 Conversion of fluoroanhydrite to plaster |
| 06/07/1983 | US4387083 Crystallization of calcium sulfate dihydrate, sulfuric acid, particle sizes |
| 05/17/1983 | US4383960 Hydratable calcium sulfate |
| 04/27/1983 | EP0077475A2 Process and apparatus for the pressureless production of alpha-calcium sulphate-hemihydrate |
| 03/23/1983 | EP0074887A1 Process for the production of a plaster, furnace for such a process and application of the plaster |
| 03/23/1983 | EP0074772A2 Preparation of a calcium sulfate anhydrite material of low chloride content |
| 02/15/1983 | CA1141157A1 Calcination method and apparatus |
| 01/25/1983 | CA1139919A1 Lump process alpha gypsum |
| 12/14/1982 | CA1137304A1 Heat treatment of material |
| 11/24/1982 | EP0065065A2 Water proof building material based on gypsum, containing calcium silicate, and method for its preparation |
| 11/23/1982 | US4360386 Treating calcined gypsum with solubilizing agent |
| 10/14/1982 | WO1982003379A1 Treating calcined gypsum with solubilizing agent |
| 10/06/1982 | EP0061517A1 Process for producing a waterproof binder |
| 09/14/1982 | CA1131443A1 Calcining kettle having means for returning stack exhaust gas to calcining mixture |
| 03/24/1982 | EP0047747A1 Process for producing plaster mortars and products obtained therefrom. |
| 02/02/1982 | CA1117271A1 Spherical gypsum and process for production of same |
| 01/20/1982 | EP0044005A1 Production of calcium-sulfate hemihydrate using waste heat, diluted sulfuric acid and sulfuric salts |
| 01/05/1982 | US4309391 Calcium sulfate hemihydrate of low consistency |
| 12/30/1981 | EP0042429A1 Integrated process for converting multi-solid fuels into clean producer gases and liquids and for recovering valuable by-products |
| 12/29/1981 | CA1115025A1 Process for producing calcium sulfate |
| 12/23/1981 | EP0042349A2 Process and device for the elimination of excess water from a mixture of gypsum and water, and products obtained |
| 12/09/1981 | EP0041309A1 Method and plant for making gypsum products |
| 11/24/1981 | CA1112844A1 Method for the production of hard gypsum |
| 11/17/1981 | US4300324 Anhydrite cellular concrete composite building elements and their method of manufacture |
| 11/03/1981 | US4298340 Method and apparatus for producing a hydraulic binder |
| 10/20/1981 | CA1110847A1 Automatic calcining kettle |
| 09/01/1981 | US4286994 Method for the use of the gypsum occurring in flue gas desulfurizing installations, operated on a lime basis |
| 07/09/1981 | WO1981001838A1 Integrated process for converting multi-solid fuels into clean producer gases and liquids and for recovering valuable by-products |
| 06/30/1981 | CA1103890A1 Process for preparing calcined gypsum and gypsum board |
| 06/30/1981 | CA1103889A1 Process for the manufacture of lump calcium sulfate |
| 06/25/1981 | WO1981001702A1 Process for producing plaster mortars and products obtained therefrom |
| 06/23/1981 | US4274839 Process for gasification of coal and organic solid wastes |
| 05/26/1981 | US4269721 Dust abatement with calcium sulfate |
| 04/21/1981 | CA1099483A1 Process of making calcium sulfate from aqueous sulfuric acid containing ferrous sulfate |
| 03/31/1981 | CA1098283A1 Method for processing of phosphogypsum |
| 03/17/1981 | CA1097475A1 Treatment of gypsum plaster |
| 01/27/1981 | US4247518 Apparatus for the thermal conversion of gypsum |
| 12/16/1980 | US4239716 Gypsum moldings as building materials and methods manufacturing the said gypsum moldings |
| 12/10/1980 | EP0019951A1 Process for welding gypsum bodies |
| 12/09/1980 | US4238445 Process for manufacturing gypsum board |
| 12/09/1980 | US4238238 Calcining kettle having means for returning stack exhaust gas to calcining mixture |
| 12/02/1980 | US4236932 Method and apparatus for producing a hydraulic binder |
| 12/02/1980 | CA1090565A1 Calcining kettle having multi-pass heating system |
| 11/18/1980 | US4234345 Method for producing hard plaster of paris |
| 11/11/1980 | US4233080 Anhydrite cellular concrete and composite building elements |
| 11/04/1980 | CA1088961A1 Disposal of fluoride-containing wastes |
| 10/14/1980 | CA1087368A1 Process for preparing calcined gypsum |
| 10/14/1980 | CA1087367A1 Continuous gypsum kettle |
| 09/30/1980 | US4225360 Salt removal |
| 09/23/1980 | US4224078 Treatment of gypsum plaster |
| 09/02/1980 | CA1084957A1 Plaster made from ferrous sulphate |
| 08/19/1980 | CA1083778A1 Apparatus and process for preparing calcined gypsum |
| 07/29/1980 | CA1082423A1 Continuous calciner |
| 06/25/1980 | EP0012488A1 Process for the preparation of calcium sulphate hemihydrate and calcium sulphate hemihydrate obtained by this process |
| 06/25/1980 | EP0012487A1 Process for the preparation of calcium sulphate anhydrite and calcium sulphate anhydrite obtained by this process |
| 06/17/1980 | US4208393 Adding calcium carbonate to sulfuric acid-ferrous sulfate mixture |
| 05/06/1980 | US4201595 Process for preparing calcined gypsum and gypsum board |
| 04/08/1980 | CA1074977A1 Method for the production of alpha type hemihydrated gypsum |
| 03/25/1980 | CA1074085A1 Heat transfer element and tuyere for fluidized bed reactor |
| 03/19/1980 | EP0008947A1 Method of treating calcined gypsum and manufacture of gypsum board therefrom |
| 03/18/1980 | US4193812 Dehydration, reacting impurities with calcium source |
| 03/11/1980 | CA1073481A1 Production of calcinable material |
| 02/12/1980 | US4188186 Automatic calcining kettle |