Patents for C01F 11 - Compounds of calcium, strontium, or barium (8,019)
06/1988
06/07/1988US4749518 Extraction of cesium and strontium from nuclear waste
06/07/1988CA1237644A1 Process for treating and recovering pickling waste liquids for stainless steel
06/01/1988DE3639612A1 Process for treating dry residues from the desulphurisation of gases with a calcium-containing absorbent
05/1988
05/31/1988US4747957 Brine treatment using ethylene carboxylic acid polymers
05/31/1988US4747954 Ethylene-unsaturated acid copolymer
05/11/1988EP0267031A1 Desulfurization of gypsum
05/11/1988EP0266571A1 Process for converting by-products of wet flue gas desulfurisation plants
04/1988
04/21/1988DE3635050A1 Continuous preparation of barium sulphate
04/06/1988EP0263057A1 Method for desulfurizing smoke
04/06/1988EP0262396A2 Process for the preparation of calcium sulphate dihydrate during flue-gas desulfurization
03/1988
03/30/1988EP0261110A1 Flue-gas purifying procedure
03/29/1988US4734272 Removing fluorine, use sulfur values to make sulfuric acid
03/29/1988CA1234538A1 Scrubber for an apparatus for the desulfurization of flue gas
03/24/1988WO1988001990A1 Improved binders for refractories
03/24/1988DE3727801A1 Process for producing flue gas gypsum in the course of the flue gas desulphurisation of power station boiler firings
03/22/1988US4732748 Fillers or opacifiers for paper
03/09/1988CN86105875A Noval technology in the production of high grade barium chloride
03/02/1988EP0257458A2 Scrubbing agent and process for producing the same
02/1988
02/23/1988US4726938 Liquid/liquid extraction/purification of impure solutions of rare earth values
02/18/1988DE3625029A1 Process for the continuous treatment of reaction products from flue gas scrubbers with simultaneous removal of sulphur dioxide and nitrogen oxides
02/17/1988CN86105577A New technique producing deposited barium sulphate by salt-melting
02/10/1988CN86104945A Production method of hydroxides, thiosulfates, sulfates and sulfur
02/09/1988US4724132 Cross-pipe reactor to provide extreme mixing and agitation
01/1988
01/28/1988DE3722360A1 Fluidised bed calcination
01/28/1988DE3625186A1 Process for preparing settable calcium sulphates and their use
01/26/1988US4721610 Ejection, oxidation
01/21/1988DE3706533A1 Process for converting barium from heavy spar (barytes, barite) into an aqueous solution
01/20/1988EP0253570A2 Method and structure for forming a reaction product
01/20/1988EP0253552A2 Preparation of unagglomerated metal oxide particles with uniform particle size
01/20/1988EP0253454A1 Process for the removal of heavy metals from acid, phosphate-containing aqueous media
01/20/1988CN87104559A Method for production of strontium salt using strontianite
01/13/1988EP0252099A1 Magnesium cement
01/07/1988DE3621333A1 Process for the degradation of waste gypsum and apparatus for carrying out the process
01/06/1988CN85100710B Low qm piezoelectric ceramic material and its preparation method
12/1987
12/30/1987CN86104367A Making pptd. barium sulfate by smelting process
12/22/1987US4714603 Paper coating; treating calcium hydroxide slurry with carbon dioxide
12/17/1987DE3619909A1 Process for preparing magnesium oxide and/or its hydration products
12/15/1987US4713226 Abrasive grinding limestone slurry containing dissolved carbon dioxide
12/02/1987EP0247987A1 A basic metal hydroxysulphate complex in solid form and a method for its manufacture
12/01/1987US4710306 Adding a soluble aluminum salt ot a brine; neutralization and filtration
11/1987
11/19/1987EP0245897A1 Process of preparing virtually cadmium-free calcium sulphate and calcium sulphate prepared according to this process
11/17/1987US4706651 Solar solids reactor
11/11/1987EP0245122A2 Process for the purification of a barium salt
11/05/1987DE3614789A1 Process for the wet desulphurisation of flue gases
11/03/1987US4704265 Process for the manufacture of calcium chloride
10/1987
10/21/1987EP0241496A1 Process for simultaneous extraction of so 2? and no x? contained in waste gases
10/20/1987CA1228343A1 Process for preparing finely divided limestone
10/15/1987DE3612142A1 Combination process for separating off sulphur oxides and nitrogen oxides from flue gases
10/06/1987US4698219 Multistage carbonation of calcium oxide and calcium sulfide
10/01/1987DE3709392A1 Process for flue gas treatment
09/1987
09/30/1987CN87100989A Method for purifying barium ester
09/24/1987WO1987005530A1 Flue-gas purifying procedure
09/23/1987EP0237802A1 Process for the preparation of calcium sulphate anhydrite and curable calcium sulphates
09/16/1987EP0237081A2 Process for the preparation of complex perovskite type compounds
09/16/1987EP0236852A2 Process for reducing the chloride load of wet flue gas desulfurisation plants
09/09/1987EP0235980A1 Textiles having stain resistance
09/03/1987DE3605393C1 Process for the preparation of anhydrous calcium sulphate (anhydrite)
09/01/1987US4690810 Disposal process for contaminated chlorosilanes
08/1987
08/26/1987CN87100674A Textiles having stain resistance
08/18/1987US4687649 Flue gas desulfurization process
08/18/1987US4687583 Controlled continuous rotation to deposit lime sludge on drum, then detaching
08/13/1987DE3604383A1 Purification of gypsum from flue gas desulphurisation plants
08/04/1987US4684529 Process for the preparation of iodizable calcium composition
07/1987
07/22/1987CN86104840A No effluent cyclic technology for preparing phosphoric acid by hydrochloric acid decomposition of phosphate ore and liquid-liquid extraction
07/16/1987WO1987004145A1 Magnesium cement
07/16/1987DE3600400A1 Process for conditioning lime slurry
07/14/1987CA1224010A1 Method for oxidation of flue gas desulfurization absorbent and the product produced thereby
07/14/1987CA1224009A1 Process for the preparation of barium sulfate of increased flowability and density, suitable as a radio-opaque component in radiographic contrast agents, product obtained according to this process and the radiographic contrast agent produced therefrom
07/08/1987EP0227893A2 Method of removing metal contaminants from solutions
07/08/1987EP0140915B1 Catalytic process for accelerated decarboxylation of calcium carbonate and blend therefor
07/08/1987CN85108510A Production of pigment from barite
07/02/1987DE3538136A1 Recovery of valuable material from the simultaneous SO2 and NOx scrubbing of preferably flue gases downstream of power stations
07/01/1987EP0226690A1 Process for the treatment of alpha calciumsulfat hemihydrate and the obtained product therefrom
06/1987
06/19/1987DE3543843A1 Process for the simultaneous scrubbing of SO2 and NOx from flue gases by the use of additives with low manganese content
06/10/1987EP0224627A1 Method for desulfurizing exhaust gas
06/04/1987WO1987003314A1 A process for causticizing of an aqueous solution containing alkali carbonate
06/04/1987DE3640573A1 Process and plant for energy recovery from toxic waste materials with simultaneous disposal thereof
06/03/1987EP0224209A2 Process for recovery of rare metals
06/03/1987EP0223803A1 METHOD FOR SIMULTANEOUSLY REMOVING BY WASHING SO 2?, NO x? AND OPTIONALLY OTHER NOXIOUS SUBSTANCES CONTAINED IN FLUE GASES IN HEATING INSTALLATIONS SUPPLIED WITH FOSSILE FUELS
06/02/1987US4670238 Humidification, electrostatic precipitation
06/02/1987US4670224 Scrubber for the desulfurization of flue gases
05/1987
05/27/1987DE3541471A1 SO2 and/or SO2 and NOx scrubber with upstream calcium chloride recovery
05/27/1987DE3541323A1 SO2 scrubbing downstream of combustion plants with crude gypsum as the end product
05/26/1987US4668485 Recovery of sodium aluminate from Bayer process red mud
05/19/1987US4666694 Method for treating by-products from flue gas
05/19/1987US4666690 Method for removing sulfur dioxide from flue gases
05/19/1987US4666688 Hydrochloric acid and ammonium carbonate treatments
05/19/1987CA1221815A1 Off-gas desulfurization process
05/07/1987DE3539261A1 Anhydrite for the production of dam construction materials in mining
04/1987
04/28/1987US4661634 Filtration through porous polymer particles in fiber form
04/23/1987WO1987002269A1 Process for simultaneous extraction of so2 and nox contained in waste gases
04/23/1987DE3537480A1 Process and plant for simultaneous separation of sulphur oxides and nitrogen oxides from flue gases
04/21/1987CA1220615A1 Process for removing sulfur dioxide from off-gas
04/16/1987DE3536312A1 Simultaneous separation-off of SO2/NOx in the aqueous phase with production of gypsum and SO2 release in the preliminary scrubbing stage
04/14/1987CA1220398A1 Method for solidifying waste slime suspensions
04/14/1987CA1220323A1 Process and apparatus for fluidized calcination of diamide lime, and desulfurizing agent
04/07/1987US4655839 Landfillable composition from iron chloride waste treatment in molten salt
04/02/1987DE3534390A1 Process for producing calcium sulphate alpha-hemihydrate from calcium sulphate dihydrate
04/01/1987EP0216649A2 Method and system for manufacturing fine-grained silicon monoxide
04/01/1987EP0216473A1 Extraction of cesium and strontium from nuclear waste
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