Patents
Sitemap › C01 - Inorganic chemistry › C01F - Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals › C01F 11 - Compounds of calcium, strontium, or barium
Patents for C01F 11 - Compounds of calcium, strontium, or barium (8,019)
11/1999
11/09/1999US5980848 Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate
11/09/1999US5980842 Separation of calcium from metal compounds
11/09/1999CA2159521C Method for desulfurizing exhaust gas
11/03/1999EP0953544A1 Process for preparing calcium carbonate
11/02/1999US5976511 Plate barium sulfate particles having a surface coated with at least one of zinc oxide, cerium oxide and titanium oxide. the composition has a pearly luster of stable quality and satisfactory translucence and feel
10/1999
10/27/1999EP0951513A1 Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum
10/20/1999CN1231939A Wet flue gas desulfurization apparatus
10/14/1999WO1999051691A1 Precipitated calcium carbonate and its production and use
10/14/1999WO1999051525A1 Process and apparatus for producing precipitated calcium carbonate
10/14/1999CA2326989A1 Precipitated calcium carbonate and its production and use
10/13/1999EP0949201A1 Process for preparing calcium carbonate
10/13/1999CN2343161Y Automatic device for preparing and adding lime milk
10/12/1999US5966583 Recovery of strontium activity from a strontium-82/rubidium-82 generator
10/12/1999US5965103 Production of slaked lime
10/12/1999US5964940 Mixing ground gypsum with concentrated sulfuric acid and water; drying to form water-soluble, granular, solid, free-flowing gypsum
10/07/1999WO1999050180A1 Method of processing sulfur-containing materials derived from flue gas desulfurization or other sources
10/06/1999EP0946418A1 Dewatering of calcium carbonate
10/06/1999EP0946417A1 Method of recovering calcium from waste material or contaminated natural calcic material
10/06/1999CN1230519A Calcium and magnesium removing method during the production of glauber salt
10/06/1999CN1230454A Method of processing sulfur-containing materials derived from flue gas desulfurization or other sources
10/05/1999US5961941 Production of precipitated calcium carbonate from papermaking sludge and sludge-derived ash
09/1999
09/30/1999WO1999048816A1 METHOD FOR REPROCESSING WASTE ACID RESULTING FROM TiO2 PRODUCTION
09/30/1999WO1999048808A1 METHOD FOR REPROCESSING WASTE ACID RESULTING FROM TiO2 PRODUCTION
09/30/1999CA2324527A1 Method for reprocessing waste acid resulting from tio2 production
09/30/1999CA2324308A1 Method for reprocessing waste acid resulting from tio2 production
09/29/1999EP0944551A1 Precipitated calcium carbonate and method for the production thereof
09/23/1999WO1999047454A1 Synthesis method for powder ceramic complexes of refractory metals
09/23/1999DE19812262A1 Production of gypsum and iron oxide pigments from dilute acid formed in the manufacture of titanium dioxide
09/23/1999DE19812261A1 Production of gypsum and iron oxide pigments from dilute acid formed in the manufacture of titanium dioxide
09/21/1999US5955042 Method of treating spent potliner material from aluminum reduction cells
09/21/1999US5955040 Integrated apparatus and process for high recovery of acetylene from the reaction of calcium carbide with water
09/07/1999CA2128042C Calcium containing compositions with high oral bioavailability, manufacturing method of such a composition, health food containing such a composition, and pharmaceutical composition containing such a composition
09/01/1999CN1227190A Calcium-iron oxide composite particles and resin molded product containing the same
09/01/1999CN1227085A Method for producing inner shoe for shoes and boots
08/1999
08/31/1999US5945081 Wet-type flue gas desulfurization plant and method making use of a solid desulfurizing agent
08/26/1999WO1999042657A1 Calcium carbonate synthesis method and resulting product
08/19/1999DE19823879C1 Flux residues used in the manufacture of hydrogen fluorides and calcium sulphate
08/18/1999EP0936185A1 Production of products containing precipitated calcium carbonate
08/18/1999EP0861209B1 Ca(OH)2 PARTICLES
08/17/1999US5939036 Mixing impure calcium oxide with aqueous solution of nitrate or hydrochloride salt of primary amine or alkanolamine, separating insoluble material, treating solution with carbon dioxide or carbonate of said amine
08/13/1999CA2261388A1 Production of products containing precipitated calcium carbonate
08/10/1999CA2147059C Magnesium-enhanced sulfur dioxide scrubbing with gypsum formation
08/04/1999CN1224695A Manufacturing method for calcium flubride crystal and processing method for calcium fluoride power
07/1999
07/29/1999DE19802180A1 Improving performance of vacuum belt filter for draining and washing of gypsum suspension
07/28/1999EP0857160B1 Micronized alkaline earth metal carbonate
07/28/1999CN1223796A Process for preparing sterilant and calcium carbonate using waste mother liquor of high test bleaching powder
07/22/1999WO1999036361A1 Process for preparing and modifying synthetic calcium carbonate
07/06/1999US5919424 Extracting calcium from an aqueous mixture
07/06/1999CA2097670C Sulfur dioxide scrubbing process producing purified magnesium hydroxide
06/1999
06/30/1999EP0926098A1 Calcium-iron oxide composite particles and resin molded product containing the same
06/30/1999CN1043876C Stable lime slurries
06/29/1999CA2078639C Process for producing gypsum flake from flue gas desulfurization
06/22/1999US5914436 Method for the destruction of unwanted compounds using metal oxides composites
06/22/1999US5913973 Forming low solids slurry of calcium carbonate particles, adding sodium aluminate to form alkaline slurry, dewatering, adding overflow of low solids slurry to desired solids content, adding weak acid to form neutrally buffered slurry
06/16/1999EP0882100A4 Acid resistant carbonate composition containing an aluminum or magnesium hydroxide and uses therefor
06/16/1999EP0871680A4 Surface modified calcium carbonate composition and uses therefor
06/16/1999EP0848736A4 Acid resistant calcium carbonate composition containing an aluminum salt and uses therefor
06/16/1999CN1219979A Method for solubilizing metal values from Ta-Nb-ore materials containing insoluble fluorides
06/16/1999CN1043666C Combined transuranic-strontium extraction process
06/09/1999EP0898597A4 Acid resistant calcium carbonate composition and uses therefor
06/09/1999EP0859885A4 Acid resistant calcium carbonate filler
06/08/1999US5911023 Polyolefin materials suitable for optical fiber cable components
06/08/1999US5910297 Efficient preparation of useful fluorine compounds from fluosilicic acid and group iia oxides or hydroxides
06/08/1999US5910214 Carbonating calcium hydroxide suspended in water; drying and pulverizing the particles; admixing the powder with a dispersing agent and wet grinding the slurry; imparts high opacity and brightness to coated papers when used as pignment
06/02/1999EP0919646A1 Manufacturing method for calcium fluoride crystal and processing method for calcium fluoride powder
06/02/1999EP0919521A1 Strontium nitrate and method for manufacturing same
06/01/1999US5908879 Coated metal fluoride particles and a dental composition containing coated metal fluoride particles
05/1999
05/20/1999WO1999024361A1 Method for making calcium carbonate
05/19/1999CN1217007A Pigment particles coated with precipitated calcium carbonate and process for preparing same
05/18/1999US5905000 Nanostructured ion conducting solid electrolytes
05/18/1999CA2205199C Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate
05/12/1999CN1216567A Method for preparing particles comprising a core and a silica shell
05/12/1999CN1216461A Toothpaste composition comprising a silica and calcium carbonate based abrasive or additive, compatible with fluorine
05/11/1999US5902555 Stirring tank containing formed gypsum slurry, rotating suction filter above the tank partially immersed in the slurry so gypsum adheres to filter surface, is dehydrated above the surface and removed; size reduction, simplification
05/11/1999US5902498 Methods of joining metal components and resulting articles particularly automotive torque converter assemblies
05/06/1999WO1999021804A1 Stabilized liquid lime dispersion for sewage treatment
04/1999
04/22/1999WO1999019408A1 Oxinitrided composition based on an alkaline earth and tantalum or on an alkaline earth and niobium, preparation methods and use as dyeing pigment
04/21/1999EP0909335A1 Treatment of fly ash/apc residues including lead salt recovery
04/14/1999EP0802883B1 Method for coproducing calcium carbonate and sodium hydroxide
04/14/1999EP0621800B2 Process for briquetting and compacting fine grained materials
04/07/1999EP0906084A1 Toothpaste composition comprising a silica and calcium carbonate based abrasive or additive, compatible with fluorine
04/07/1999CN1213327A Chemical sorbent and method of making and using same
04/06/1999US5891320 Forming an alkaline solution, acidification, precipitation and filtration
03/1999
03/30/1999CA2144221C Modified scoop and oxidation system
03/24/1999CN1211654A Aqueous suspensions of mineral materials and their uses
03/18/1999WO1999012852A1 Process for preparing calcium carbonate particles
03/18/1999WO1999012851A1 Process and apparatus for preparing precipitated calcium carbonate
03/18/1999DE19740736A1 Respirator lime for use in anaesthetising apparatus
03/17/1999EP0902123A2 Process for preparing coated printing paper
03/17/1999CN1210812A Gas phase cladding process for producing active calcium carbonate
03/17/1999CN1042522C Method for preparation of superfine grinded calcium carbonate and its equipment
03/16/1999US5883137 Compositions and methods for the control of smoking
03/16/1999US5882361 Method for producing calcium chloride scales
03/11/1999WO1999011721A1 Bimolecular coated calcium carbonate and process of production thereof
03/10/1999EP0900256A1 Method for preparing particles comprising a core and a silica shell
03/10/1999CN1210091A Magnetized solution and preparation thereof
03/09/1999US5881359 Metal and fluorine values recovery from fluoride salt matrices
03/09/1999US5879830 Waste recycling by sulfiding, demetallizing, deleading
03/09/1999US5879442 Aqueous slurry of precipitated calcium carbonate and ground calcium carbonate in combination
03/04/1999DE19738481A1 Verfahren zur Oberflächenbehandlung von Calciumcarbonat A method for surface treatment of calcium carbonate
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