Patents for C01F 11 - Compounds of calcium, strontium, or barium (8,019)
10/1997
10/29/1997CN1163293A Colouring agent for paint
10/23/1997WO1997038940A1 METHOD AND APPARATUS FOR RECOVERING CaCO3 PRODUCED BY CAUSTICIZING
10/22/1997CN1162568A Process for producing ultrafine particles of colloidal calcium carbonate
10/15/1997EP0801028A2 Method for selective recovery of salt components from nitrite/nitrate-containing, used hardening salts
10/15/1997CN1161996A Super-fine-ground calcium carbonate for paper-making and production method thereof
10/14/1997US5676915 Continuous circulation process using magnesium compound
10/13/1997CA2202416A1 Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate
10/08/1997EP0799797A1 Continuous process for the production of precipitated calcium carbonate
10/08/1997CN1161647A Compositions and method for controlling smoking
10/07/1997US5674459 Hydrogen peroxide for flue gas desulfurization
10/02/1997WO1997036014A1 METHOD FOR SOLUBILIZING METAL VALUES FROM Ta-Nb-ORE MATERIALS CONTAINING INSOLUBLE FLUORIDES
10/02/1997DE19620720C1 Exhaust gas desulphurising
10/01/1997EP0798268A1 Treatment of solid containing material derived from effluent
09/1997
09/29/1997CA2200512A1 Treatment of solid containing material derived from effluent
09/24/1997EP0796826A1 Method for hydrophobing gypsum
09/23/1997CA2115576C Generation of fluorine via thermal plasma decomposition of metal fluoride
09/17/1997EP0795588A1 Coating
09/17/1997CN1159423A Technology for producing high-strength gypsum by using bittern
09/12/1997WO1997032934A1 Pigment particles coated with precipitated calcium carbonate and a process for the preparation thereof
09/10/1997EP0794152A2 Synthetic chalcoalumite compounds and process for producing thereof
09/10/1997EP0793621A1 Method for purification of calcium carbonate
09/09/1997US5666642 Extraction of cesium and strontium ions from nuclear waste
09/09/1997US5666641 Preparation and use of polymeric materials containing hydrophobic anions and plasticizers for separation of cesium and strontium
09/09/1997US5665319 Method of separating carbon dioxide from carbon dioxide containing gas and combustion apparatus having function to separate carbon dioxide from the combustion gas
09/09/1997US5665129 Wet flue-gas dsulfurization system
09/04/1997WO1997031860A1 Separation of calcium from metal compounds
09/02/1997US5662794 Solid-liquid separator and wet flue gas desulfurization apparatus
08/1997
08/26/1997CA2133624C Production of low sulfur content lime from limestone
08/20/1997EP0789670A1 Treatment of solid-containing material derived from effluent
08/07/1997WO1997028087A1 Process for producing calcium carbonate from calcium-containing residues
08/07/1997DE19603449A1 Verfahren zur Herstellung von Calciumcarbonat aus Calcium-haltigen Reststoffen A process for producing calcium carbonate from calcium-containing residues
08/06/1997EP0787039A1 Process for reprocessing and utilizing boron trifluoride catalyst residues
08/05/1997US5654456 Precursors and processes for making metal oxides
08/05/1997US5653955 Cyclic process for oxidation of calcium sulfide
07/1997
07/29/1997CA1339049C Process for the conversion of calcium sulfate dihydrate into .alpha.- semihydrate
07/24/1997WO1997026024A1 Macroporous composite for carrying one or more medicinal substances and for use as a bone reconstruction material, and method for making same
07/24/1997CA2243293A1 Macroporous composite for carrying one or more medicinal substances and for use as a bone reconstruction material, and method for making same
07/22/1997US5649894 Compositions and methods for waste treatment
07/17/1997WO1997025138A1 Chemical sorbent and methods of making and using same
07/16/1997EP0784071A1 Calcium-base filler and process for producing the same
07/15/1997US5647902 Acid resistant carbonate composition
07/09/1997EP0782545A1 A method to prepare calcium carbonate
07/08/1997US5645807 Magnesium-enhanced sulfur dioxide scrubbing with gypsum formation
07/03/1997WO1997023686A1 Process for the conversion of calcium sulfide
07/03/1997CA2241138A1 Process for the conversion of calcium sulfide
07/02/1997EP0781589A1 Method of producing gypsum
07/01/1997US5643631 Ink jet recording paper incorporating novel precipitated calcium carbonate pigment
07/01/1997US5643548 Drying and separating process and plant
07/01/1997US5643415 Precipitated calcium carbonate particles from basic calcium carbonate
06/1997
06/25/1997CN1152550A Method for production of baryta hydrate in carbonate type barium ore
06/12/1997WO1997020771A1 Process for the preparation of discrete particles of calcium carbonate
06/11/1997EP0777550A2 Nanoscale particles, and uses for same
06/11/1997EP0777473A1 Compositions and methods for the control of smoking
06/05/1997WO1997019894A1 Process for producing calcium oxide, strontium oxide and barium oxide showing a high value of water sorption speed and oxides thus obtained
06/05/1997WO1997019893A1 Production of sodium fluoride and silica
06/05/1997WO1997015530A3 Micronized alkaline earth metal carbonate
06/03/1997US5635149 Wet scrubbing method and apparatus for removing sulfur oxides from combustion effluents
06/03/1997US5634968 Carbonate containing mineral fillers more particulary for use as matting agents
05/1997
05/28/1997EP0754163A4 Iron oxide/magnesium oxide composites and method for destruction of chlorinated hydrocarbons using such composites
05/21/1997CN1150125A Process for preparing calcium carbonate
05/20/1997US5631431 Particulate CaF2 agent for improving the machinability of sintered iron-based powder
05/15/1997DE19542159A1 Preparation of dry highly reactive calcium hydroxide
05/09/1997WO1997003749A3 Process for the transformation of halogenated refrigerant gases
05/01/1997WO1997015530A2 Micronized alkaline earth metal carbonate
04/1997
04/30/1997DE19643657A1 Barium, calcium or strontium carbonate microparticle preparation
04/29/1997US5624649 Process for reduction of sulfur dioxide emission from combustion gases combined with production of potassium sulfate
04/29/1997US5624481 Process for the water-repellent impregnation of plaster
04/24/1997WO1997014847A1 Acid resistant calcium carbonate filler
04/24/1997WO1997014755A1 Acid resistant carbonate composition containing an aluminum or magnesium hydroxide and uses therefor
04/24/1997WO1997014651A1 Stabilized calcium carbonate composition using sodium carbonate and mixtures of acids and uses therefor
04/24/1997WO1997014650A1 Ca(OH)2 PARTICLES
04/24/1997CA2235151A1 Stabilized calcium carbonate composition using sodium carbonate and mixtures of acids and uses therefor
04/17/1997WO1997013723A1 Purifying highly impure calcium hydroxide and producing high-value precipitated calcium carbonate and other calcium products
04/17/1997CA2234688A1 Purifying highly impure calcium hydroxide and producing high-value precipitated calcium carbonate and other calcium products
04/16/1997EP0768344A2 Paper coating pigments and their production and use
04/15/1997US5620709 Pure compounds (from baking of shells) having high absorption and reduced excretion, for treatament of calcium deficiency diseases
04/15/1997US5620667 Recovering gypsum product of calcium compound slurry reacted with sulfur dioxide-containing flue gas with belt filter for slurry dehydration; simplification
04/10/1997WO1997012672A1 Composite metal oxide adsorbents
04/09/1997EP0767140A1 Process for the recovery of salt components from hardening salt baths
04/08/1997US5618511 Process for producing ammonium sulfate from flue-gas scrubber waste liquor
04/07/1997CA2187053A1 Process for recovering the salt constituents from hardening-shop salt baths
04/03/1997WO1996039702A3 Methods and agents for the extraction of cesium and strontium from nuclear waste
04/02/1997CN1146430A Detoxication utilization for barium and chromium slag
03/1997
03/27/1997WO1997011030A1 Method of manufacturing high purity calcium carbonate
03/25/1997US5614158 Process for removing sulfur dioxide from gases and producing gypsum and purified magnesium hydroxide
03/20/1997WO1997005943A3 Process for removing carbon dioxide from gas mixtures
03/20/1997DE19545290C1 Prepn. of free-flowing solid mixt. of calcium fluoride and calcium sulphate
03/19/1997EP0525100B1 Method for liquid chromatographic extraction of strontium from acid solutions
03/13/1997WO1997005061A3 Continuous precipitated calcium carbonate production equipment
03/06/1997WO1997008249A1 Acid resistant calcium carbonate composition containing an aluminum salt and uses therefor
03/06/1997WO1997008248A1 Surface modified calcium carbonate composition and uses therefor
03/06/1997WO1997008247A1 Acid resistant calcium carbonate composition and uses therefor
03/06/1997CA2230158A1 Acid resistant calcium carbonate composition and uses therefor
03/06/1997CA2230094A1 Acid resistant calcium carbonate composition containing an aluminum salt and uses therefor
03/06/1997CA2230054A1 Surface modified calcium carbonate composition and uses therefor
03/04/1997CA2035808C Acid-stabilized calcium carbonate, process for its production and method for its use in the manufacture of acidic paper
02/1997
02/20/1997WO1997005943A2 Process for removing carbon dioxide from gas mixtures
02/18/1997CA2081920C Liquid carbon dioxide injection in exothermic chemical reactions
02/13/1997WO1997005061A2 Continuous precipitated calcium carbonate production equipment
02/13/1997DE19529246A1 Verfahren zur Kohlendioxidabreinigung aus Gasgemischen Method for Kohlendioxidabreinigung from gas mixtures
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