Patents for C04B 7 - Hydraulic cements (9,126)
02/1991
02/20/1991CN1049298A Heating and treatment of particulate material
02/19/1991US4994114 Method for selecting a pozzolan intended to be incorporated into a composite material comprising cement and glass
02/14/1991DE3926756A1 Heat treatment of fine granular materials - with greater process efficiency achieved by redirecting part of mixed gas stream after cooling and dust removal back to mixing chamber
02/14/1991DE3926195A1 Sintering together foundry sand waste material and limestone - comprises mixing and sintering at 1400-1500 deg. C
02/13/1991EP0412913A1 Injection grout for consolidating cracked structures
02/12/1991US4992103 Cementitious compositions
02/12/1991US4992102 Synthetic class C fly ash and use thereof as partial cement replacement in general purpose concrete
02/12/1991CA2022981A1 Cracked structures consolidation grouting
02/10/1991WO1991001799A1 Heating and treatment of particulate material
02/06/1991EP0245326B1 Improvements relating to hydraulic binders
01/1991
01/30/1991CN1011408B Calcination apparatus for use in fluidized bed burning installation for powdery raw material
01/29/1991CA1279663C Method of preparing building materials
01/29/1991CA1279662C Capsules of high alumina cement compositions
01/23/1991CN1011340B Method and apparatus for crushing deposit and masonry in cylindedr
01/22/1991CA1279333C Hydraulic binders and building elements formed of non- traditional materials
01/22/1991CA1279332C Volume-stable hardened hyraulic cement
01/15/1991US4985081 Method of producing cement or concrete
01/15/1991US4985080 Protective coating for concrete structures
01/15/1991US4984983 Method of cofiring hazardous waste in industrial rotary kilns
01/02/1991CN2068507U Scraper unit of base edge combined rotation without special driving power
01/01/1991US4981519 Cement
12/1990
12/27/1990EP0403545A1 Heat exchanger.
12/19/1990CN1047849A Composition of new energy-saving cement
12/19/1990CN1047848A Process for pretreating raw cement
12/19/1990CN1047847A New energy-saving and production-increase process by convertion cement chamber from wet method into wet and dry mixed method
12/19/1990CN1047846A Technique for heating, power generation, and cement production by fluidized bed-combustion boiler
12/15/1990CA2018889A1 Very early setting ultra high early strength cement
12/13/1990WO1990015033A1 Very early setting ultra high early strength cement
12/12/1990CA2018800A1 Light weight formed body and producing the same
12/11/1990US4976469 Roll press
12/05/1990EP0393043A4 Methods of making cementitious compositions from waste products
12/05/1990CN1010678B Method for fine granular materials heating treatment
12/04/1990US4975396 Process for producing reinforced cementitious compositions and the products produced thereby
12/04/1990US4975046 Cement shaft suspension furnace and process
12/04/1990US4974529 Method for energy recovery from containerized hazardous waste
12/04/1990CA1277341C Fly ash processing method and system and product produced thereby
12/04/1990CA1277340C Flyslag treatment
12/01/1990WO1990014899A1 Process for manufacturing clinkers
12/01/1990CA2033342A1 Process for manufacturing clinkers
11/1990
11/29/1990WO1990014322A1 Method and plant for the production of injectable cement mixtures
11/29/1990WO1990014318A1 Method and installation for roasting (a) mineral material(s)
11/29/1990EP0363429A4 Process for chemical stabilization of heavy metal bearing dusts and sludges, such as eaf dust.
11/27/1990US4973464 Roasting in air or nitrogen atmosphere, volatilization, pyrolysis
11/22/1990EP0397963A1 Highly reactive hydraulic binder for the production of building materials
11/22/1990EP0397862A1 Raw-material mixture for obtaining an active mineral additive to cement
11/21/1990CN1047070A Cement for high grade road and its manufacture method
11/20/1990US4971781 Working up sodium sulfate-containing residues
11/20/1990US4971720 Method for suppressing process dust emissions
11/20/1990US4971627 Calcium sulfate, calcium sulfite, calcium hydroxide, calcium carbonate desulfurized product, mixing flue ash or flue dust, oxidation and roasting
11/20/1990CA1276433C Process of carrying out high-temperature reactions
11/15/1990WO1990013524A1 Shaped article with a cement-bound matrix and method and composition for the preparation thereof
11/15/1990DE3915432A1 Standard cement mfr. - using high pressure roller press, sieve and gypsum dehydration heat supply
11/14/1990EP0397189A2 Mixed gypsumless portland cement and its production
11/14/1990EP0396671A1 Cement composition
11/14/1990CN1010405B Process and equipment for calcining cement grog
11/13/1990US4969407 Containerized hazardous waste homogenate
11/13/1990CA1276188C Cementitious mixes
11/11/1990CA2016435A1 Mixed gypsulmless portland cement
10/1990
10/31/1990CN1010230B Making decorative face brick from tailings of iron ore
10/24/1990EP0393731A1 Process for preparing a substance with hydraulic binding properties and substance prepared with this process
10/24/1990EP0393189A1 Method for production of portland cement klinker
10/24/1990EP0393043A1 Methods of making cementitious compositions from waste products.
10/24/1990CN1010083B Method and system for exhaust gas stream scrubbing
10/23/1990US4964914 Shredding, mixing with flammable fuel, dissolving, homogenizing
10/23/1990US4964912 High strength and excellent workability
10/23/1990CA1275424C Methods of making cementitious compositions from waste products
10/10/1990EP0391463A2 Reduction of nitrogen oxide (NOx) emission from a kiln plant
10/10/1990EP0390923A1 Method of obtaining active mineral admixture to cementing materials
10/09/1990US4961787 Cement composition
10/03/1990CN2063214U Vertical device for clinkering cement by dry process
10/03/1990CN1045761A Mew method for increasing production by cement kiln with vertical preheater
09/1990
09/26/1990CN2062815U Preventing and safety protector for eruption of cement vertical kiln
09/26/1990CN1045571A Method of producing cement or concrete
09/26/1990CN1009768B Raw meal composition charge ratio autocontrol system for vertical furnance
09/19/1990CN2062332U Automatic homogenizer for raw materials in cement production
09/19/1990CN1009642B Blast-furnace slag cement of quick setting behavior and high-early strength
09/18/1990US4957556 Limestone, gypsum and bauxite, kaolinite and/or high alumina clay, heat treatment, slags, hydraulic cement, calcium sulfate
09/17/1990CA2011514A1 Method of producing cement or concrete
09/12/1990EP0248791B1 Dry mortar mixture
09/12/1990CN2061934U Extrusion forming equipment for cement raw material
09/11/1990US4955986 Method for the heat treatment of finely granular material
09/07/1990WO1990009968A1 Binder for a high strength high density concrete and concrete using said binder
09/07/1990WO1990009959A1 Method for the removal of cyanides from spent potlinings from aluminum manufacture
09/05/1990EP0385493A2 Process for the production of chlorosilicates, and their use
08/1990
08/30/1990DE4005149A1 Verbesserte puzzolanische zubereitungen Improved pozzolanic preparations
08/29/1990CN1044932A Chloride-adding method for producing white cement
08/24/1990CA2010816A1 Pozzolanic compositions
08/23/1990DE3905454A1 Process and plant for heat-treating fine-grained material
08/23/1990DE3905453A1 Process and plant for heat-treating fine-grained material
08/22/1990CN2060774U Bleaching device for white cement clinker aggregate
08/22/1990CN1009270B Process and equipment of vertical kiln with ring section
08/22/1990CN1009248B Method and system for exhaust gas stream scrubbing
08/16/1990EP0382673A2 Method and apparatus for cofiring hazardous waste in industrial rotary kilns
08/08/1990EP0380878A2 Method and apparatus for producing cement clinker
08/08/1990CN1044449A Method and apparatus for producing cement clinker
08/07/1990US4946504 Of portland cement and monolithic crystals of calcium silicate hydrate
08/01/1990CN1008998B Equipment for vertical kiln sintering
07/1990
07/26/1990DE3901436A1 Method and installation for comminuting or milling moist materials and their drying in a hot gas flow
07/25/1990CN1044081A Utilization of furnace slag in cement production
07/24/1990US4943323 Processing additives for blended cements
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