Patents for C04B 11 - Calcium sulfate cements (2,042)
02/1980
02/06/1980EP0007610A1 Process for making use of gypsum generated in flue-gas desulfurization units
02/05/1980CA1070926A1 Manufacture of calcium sulphate alphahemihydrate
01/1980
01/22/1980CA1070089A1 Heat exchanger for fluid bed reactor
01/15/1980US4183908 Crystalline calcium sulfate dihydrate and process for making same
01/01/1980CA1068877A Flash calcination to produce soluble anhydrous calcium sulfate
11/1979
11/27/1979US4176157 Combustion gases to provide heat
11/06/1979US4173610 Process for the manufacture of lump calcium sulfate
09/1979
09/11/1979CA1062006A1 System for handling high sulfur materials
08/1979
08/07/1979CA1059736A1 Method of producing fibre-containing building members
07/1979
07/17/1979US4161390 Calcining kettle having multi-pass heating system
07/03/1979CA1057493A1 Continuous calcining of finely ground gypsum
06/1979
06/05/1979CA1055678A1 Method of preparing plaster
05/1979
05/08/1979US4153373 Apparatus and process for preparing calcined gypsum
04/1979
04/24/1979US4151000 From phosphogypsum by-product of wet phosphoric acid process
01/1979
01/02/1979CA1045340A1 Process for the manufacture of stabilised, hardenable calcium sulphate by reacting crude phosphate with sulphuric acid
12/1978
12/19/1978CA1044706A1 Structural materials based on lime-fly ash-sulfite compositions
12/12/1978CA1044014A1 Calcining calcium sulphate dihydrate
10/1978
10/17/1978US4120737 Manufacture of calcium sulphate alpha hemihydrate
10/17/1978US4120645 System for handling high sulfur materials
10/03/1978US4118243 Process for disposal of arsenic salts
10/03/1978US4118196 Apparatus for calcining wet powdery gypsum
09/1978
09/26/1978US4117070 Blending with a controlled amount of water
09/12/1978US4113836 Continuous gypsum calcination process and kettle therefor
09/05/1978US4112035 Production of calcinable material
07/1978
07/18/1978US4101630 Continuous calcining of gypsum
05/1978
05/23/1978US4091080 Method for the production of alpha type calcium sulfate hemihydrate
04/1978
04/25/1978US4086099 Method of preparing plaster
03/1978
03/21/1978US4080422 Method for producing insoluble calcium sulfate anhydrite
12/1977
12/27/1977US4065320 Drying cement pellets
10/1977
10/04/1977US4052149 Continuous calciner
08/1977
08/02/1977US4039616 Process for the manufacture of stabilized, hardenable calcium sulphate by reacting crude phosphate with sulphuric acid
07/1977
07/05/1977US4034086 Pyrrolidone-5,5-diphosphonic acids
04/1977
04/05/1977US4016240 Production of synthetic anhydrite
12/1976
12/21/1976US3998596 Calcining and hydrating chambers
10/1976
10/19/1976US3986820 Method and apparatus for burning multiphase gypsum
10/05/1976US3983927 Heat exchanger for fluidized bed reactor
09/1976
09/28/1976US3982901 Heat transfer element and tuyere for fluidized bed reactor
08/1976
08/31/1976US3977890 Method for the preparation of fibrous calcium sulfate hemihydrate
05/1976
05/11/1976US3956456 Spiral air flow
05/04/1976US3954492 Calcium sulphate anhydrite mortar
04/1976
04/20/1976US3951675 Method for the treatment of phosphogypsum
03/1976
03/23/1976US3945841 Phosphogypsum
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