| Patents for C04B 11 - Calcium sulfate cements (2,042) |
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| 10/06/1999 | EP0946445A1 Material, in particular for building and method of its manufacture |
| 09/30/1999 | WO1999048816A1 METHOD FOR REPROCESSING WASTE ACID RESULTING FROM TiO2 PRODUCTION |
| 09/30/1999 | CA2324527A1 Method for reprocessing waste acid resulting from tio2 production |
| 09/29/1999 | CN1229769A Tech. for baking gypsum and its heat resistant baking vessel |
| 09/28/1999 | US5958131 Composition comprising calcium sulfate hemihydrate, portland cement, calcined clay having pozzolanic activity; when added to water produces water resistant hydraulic solid |
| 09/23/1999 | DE19812262A1 Production of gypsum and iron oxide pigments from dilute acid formed in the manufacture of titanium dioxide |
| 09/22/1999 | CN1229006A Preparation of high-strength building gypsum with smoke desulfurizing method |
| 09/21/1999 | US5954497 Method for multi-stage calcining of gypsum to produce an anhydrite product |
| 09/15/1999 | CN2338339Y Heat resistant container for calcining and roasting gypsum |
| 09/01/1999 | CN1044898C Layered circulation lump-plaster baking method in vertical kiln |
| 08/18/1999 | EP0807090B1 Method and apparatus for continuous refractoryless calcining of gypsum |
| 07/27/1999 | US5927968 Apparatus for continuous refractoryless calcining of gypsum |
| 07/21/1999 | CN1223236A Material comprising cementitious composition |
| 06/29/1999 | CA2078639C Process for producing gypsum flake from flue gas desulfurization |
| 06/10/1999 | DE19755884A1 Gypsum wallboard efflorescence prevention |
| 06/09/1999 | EP0824506B1 Processing equipment and method for a pulverulent calcium sulphate material and novel hydraulic binder |
| 06/09/1999 | CN1043570C Preparation of phosphomagnesia coment |
| 06/03/1999 | WO1999026713A1 Method and device for exploiting the flue-gas heat in brown coal power stations with wet flue-gas desulphurisation |
| 05/27/1999 | DE19753191A1 Heat recovery from flue gas in a sulfur removal wash plant- |
| 05/19/1999 | EP0916628A2 A method of producing stucco mortar on the basis of gypsum |
| 05/11/1999 | US5901912 Efficient production of landplaster by collecting and classifying gypsum fines |
| 04/14/1999 | EP0621800B2 Process for briquetting and compacting fine grained materials |
| 04/08/1999 | WO1999016541A1 A process and apparatus for treating particulate matter |
| 04/08/1999 | CA2305260A1 A process and apparatus for treating particulate matter |
| 03/18/1999 | WO1999012861A1 Reclamation of gypsum materials |
| 03/17/1999 | EP0737172B1 Method and plant for producing plaster from gypsum by calcining in direct contact with hot carrier gases |
| 03/17/1999 | CN1211230A Gypsum wood fiber product having improved water resistance |
| 03/17/1999 | CN1210828A Modifying method using ardealite as cement filler |
| 03/04/1999 | DE19737778A1 Phase-pure calcium sulfate alpha-hemihydrate production |
| 02/18/1999 | DE19736154A1 Optimising gypsum quality during wet flue gas desulphurisation |
| 02/11/1999 | CA2245273A1 Method for compacting and selective leaching of fly ash from a recovery boiler using a pressure filter |
| 02/11/1999 | CA2233683A1 Cement composition, concrete using the same and method of manufacturing concrete product |
| 01/28/1999 | WO1999003795A1 Method and apparatus for the processing of phosphate gypsum waste |
| 01/13/1999 | EP0889861A1 Gypsum wood fiber product having improved water resistance |
| 01/06/1999 | CN1203894A Method for producing white hemihydrate gyp by using phophogypsum |
| 12/09/1998 | EP0881996A1 Method and device for heat-treating plaster |
| 12/02/1998 | EP0844987A4 Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
| 11/11/1998 | EP0876996A1 Process for the preparation of calcium sulfate-alpha hemi-hydrate |
| 11/04/1998 | EP0743875B1 Environmentally friendly flue gas purification process and system |
| 10/14/1998 | CN1196034A Method and system for multi-stage calcining of gypsum to produce anhydrite product |
| 10/06/1998 | US5817262 Process of producing gypsum wood fiber product having improved water resistance |
| 09/16/1998 | EP0864536A1 Process for the exploitation of gypsum contaminated with organic impurities and its use |
| 08/06/1998 | DE19704066A1 Dry mix for wall or plaster mortar production |
| 07/29/1998 | CN1188747A Method for producing gypsum series product using citric acid industrial waste residue |
| 07/02/1998 | WO1998028240A1 Gypsum wood fiber product having improved water resistance |
| 06/25/1998 | DE19648827C1 Method for drying alpha-calcium sulphate semi-hydrate |
| 06/24/1998 | EP0849237A1 Cementitious compositions and their uses |
| 06/23/1998 | US5769332 Efficient production of landplaster by collecting and classsifying gypsum fines |
| 06/10/1998 | CN1184085A Composite haydite artificial rock stratum sand preventing technology haydite |
| 06/10/1998 | CN1184084A Gypsum powder producing process utilizing hot blast |
| 06/03/1998 | EP0844987A1 Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
| 05/20/1998 | CN1182410A Processing equipment and method for pulverulent calcium sulphate material and novel hydraulic binder |
| 05/20/1998 | CN1182057A Layered circulation lump-plaster baking method in vertical kiln |
| 05/06/1998 | CN1038247C New phospho-gypsum cementing agent |
| 04/28/1998 | US5743954 Method for continuous refractoryless calcining of gypsum |
| 04/28/1998 | US5743728 Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
| 04/22/1998 | CN1038114C Comprehensive utilization of gypsum for flue gas desulfurizing |
| 04/16/1998 | DE19708907C1 Processing organic material-contaminated gypsum waste |
| 04/15/1998 | CN1179142A Composite gypsum board |
| 04/02/1998 | WO1998013309A1 Material, in particular for building and method of its manufacture |
| 04/01/1998 | EP0832860A1 Process for the preparation of calcium sulfate anhydrite II of low solubility |
| 03/25/1998 | CN1176945A Special cement with function of anti-sulfate, and prodn. method therefor |
| 03/25/1998 | CA2215854A1 Process for preparing sparingly soluble calcium sulphate anhydrite-ii |
| 03/11/1998 | CN1175922A Method for preparing foamed gypsum product |
| 03/10/1998 | US5725656 Calcium sulfate, acrylic latex, melamine-formaldehyde resin and alcohol for plasters |
| 03/05/1998 | DE19737659A1 Building material production from fine synthetic gypsum powder |
| 02/28/1998 | CA2213922A1 Water-heading sculptable modeling composition |
| 02/25/1998 | EP0824506A1 Processing equipment and method for a pulverulent calcium sulphate material and novel hydraulic binder |
| 01/15/1998 | DE19627251A1 Pure alpha-hemi:hydrate production |
| 01/15/1998 | DE19627250A1 Pure beta-hemihydrate production |
| 01/14/1998 | EP0818427A2 Process for producing pure calcium sulfate beta-hemihydrate |
| 01/08/1998 | CA2209589A1 Process for preparing virtually phase-pure calcium sulphate .beta.-hemihydrate |
| 12/24/1997 | CN1168356A High-strength water-proofing gypsum modifier |
| 12/11/1997 | DE19622741A1 Anhydride binder used in the manufacture of mortar |
| 12/10/1997 | EP0810920A1 Method for preparing foamed gypsum product |
| 12/04/1997 | WO1997045378A1 A gypsum composition |
| 11/27/1997 | DE19615715C1 Recrystallising calcium sulphate di:hydrate |
| 11/19/1997 | EP0807090A1 Method and apparatus for continuous refractoryless calcining of gypsum |
| 11/11/1997 | US5685903 Cementitious gypsum-containing compositions and materials made therefrom |
| 11/04/1997 | US5683635 Method for preparing uniformly foamed gypsum product with less foam agitation |
| 10/15/1997 | CN1161943A Technology for production of cement and sulfuric acid by phosphor gypsum |
| 10/01/1997 | EP0797551A1 Cementitious gypsum-containing compositions and materials made therefrom |
| 09/17/1997 | CN1159423A Technology for producing high-strength gypsum by using bittern |
| 09/02/1997 | US5662794 Solid-liquid separator and wet flue gas desulfurization apparatus |
| 08/21/1997 | WO1997030004A1 Method and device for heat-treating plaster |
| 08/21/1997 | DE19606075A1 Verfahren und Vorrichtung zur thermischen Behandlung von Gips Method and apparatus for the thermal treatment of gypsum |
| 08/21/1997 | CA2246775A1 Method and device for heat-treating plaster |
| 07/29/1997 | CA1339049C Process for the conversion of calcium sulfate dihydrate into .alpha.- semihydrate |
| 07/03/1997 | WO1997023337A1 Method for preparing foamed gypsum product |
| 05/21/1997 | CN1150416A Cementitious gypsum-containing compositions and material made therefrom |
| 03/19/1997 | CN2249752Y Pellets for producing cement and sulphuric acid from ardealite |
| 02/27/1997 | WO1997007073A1 Method and system for multi-stage calcining of gypsum to produce an anhydrite product |
| 02/25/1997 | CA1338921C Method of processing calcium alpha hemihydrate |
| 01/21/1997 | US5595597 Process for producing phosphomagnesia cements having reduced sensitivity to water |
| 01/02/1997 | EP0751102A1 Hydraulic binder for the treatment of earth or clavey materials |
| 01/02/1997 | DE19525119A1 Process to improve flue gas desulphurisation plant water management |
| 12/03/1996 | US5580002 Grinding while fluidizing bed with hot gas used to calcine material |
| 11/27/1996 | EP0743875A1 Environmentally friendly flue gas purification process and system |
| 11/13/1996 | EP0655990B1 Process for baking gypsum and oven for carrying out said process |
| 10/31/1996 | WO1996033957A1 Processing equipment and method for a pulverulent calcium sulphate material and novel hydraulic binder |