| Patents for C01F 11 - Compounds of calcium, strontium, or barium (8,019) |
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| 06/15/1989 | WO1989005282A1 Cyclical reductive and oxidative decomposition of calcium sulfate in two-stage fluidized bed reactor |
| 06/13/1989 | US4838941 Reaction product of magnesium carbonates and silicates with metal chloride; high strength |
| 05/30/1989 | US4835195 Synthetic resin |
| 05/30/1989 | US4834955 Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems |
| 05/30/1989 | US4834952 Liquid extraction using carboxylic acid, phosphonic acid ester, or hydroxyquinoline |
| 05/23/1989 | US4832936 Process for making calcium sulfate dihydrate or gypsum |
| 05/23/1989 | CA1254366A1 Sulfate removal from alkali metal chlorate solutions |
| 05/18/1989 | DE3725016A1 Process for drying and storing condensates and their pollutants situated therein which result from flue gas desulphurisation processes |
| 05/10/1989 | EP0314733A1 Process for manufacturing reactive calcium hydroxide for purifying gases and exhaust gases and process for purifying gases and exhaust gases. |
| 05/09/1989 | US4828620 Calcination of calcium carbonate and blend therefor |
| 04/26/1989 | EP0313483A1 Grinding agent for lime to enhance its reactivity |
| 04/25/1989 | US4824654 Process of producing needle-shaped calcium carbonate particles |
| 04/25/1989 | US4824653 Method of bleaching limestone |
| 04/19/1989 | CN1032430A Method for purifying calcium nitrate melt/ solution which is separated from the mixture obtained by the solution of rock phosphate with nitric acid |
| 04/18/1989 | US4822582 Process for the removal of heavy metals from acid, phosphate-containing, aqueous media |
| 04/12/1989 | EP0310868A1 Method for purifying calcium nitrate melt/solution which is separated from the mixture obtained by the solution of rock phosphate with nitric acid |
| 04/04/1989 | US4818506 Gypsum scale inhibitors for flue gas desulfurization systems |
| 04/04/1989 | US4818504 Solvent extraction with water-insoluble substituted 8-hydroxy quinoline |
| 04/04/1989 | US4818503 Extraction process for removing and recovering metals from aqueous solutions |
| 03/29/1989 | CN1031984A Process for producing strontium carbonate containing neither chlorine nor sodium from zolestin |
| 03/29/1989 | CN1031983A Preparing strontium carbonate from strontianite by catalytic decomposition with reducing gases |
| 03/21/1989 | US4814106 Manufacture of a basic metal hydroxysulfate complex in solid form |
| 03/15/1989 | EP0306540A1 Process and plant for producing energy from toxic wastes with simultaneous disposal of the latter |
| 03/15/1989 | EP0096718B1 Process for reducing radioactive contamination in phosphogypsum |
| 03/09/1989 | WO1989001913A1 Calcination of calcium carbonate and blends thereof |
| 03/09/1989 | WO1989001820A1 Process for desulphurating flue gases from power station boiler furnaces |
| 03/08/1989 | EP0306334A2 Macrocyclic ligands bonded to silica or silica gel and their use in selectively and quantitatively removing and concentrating ions present at low concentrations from mixtures thereof with other ions |
| 03/07/1989 | US4810477 Method for desulfurizing smoke |
| 03/02/1989 | DE3728128C1 Verfahren zur Entschwefelung von Rauchgasen von Kraftwerkskesselfeuerungen A process for desulfurization of flue gases from Kraftwerkskesselfeuerungen |
| 02/23/1989 | WO1988009203A3 Process for manufacturing reactive calcium hydroxide for purifying gases and exhaust gases and process for purifying gases and exhaust gases |
| 02/21/1989 | US4806331 Converting to larger size for use as ingredient in television glass face plates |
| 02/09/1989 | WO1989000980A1 Method for the multistage, waste-free processing of red mud to recover basic materials of chemical industry |
| 02/07/1989 | US4802966 Electrodialysis of saturated solution of gypsum which also contains dissolved magnesium chloride and sulfate; desalting |
| 02/01/1989 | EP0301278A2 A particle-dispersing agent |
| 02/01/1989 | CN1030737A Barium nitrate preparing technology using nitric acid to decompose barium sulfide |
| 01/31/1989 | US4801355 Tabular acicular gypsum and method of filling paper |
| 01/25/1989 | CN1030561A Process for preparing strontium carbonate and strontium compounds without environmental pollution |
| 01/19/1989 | DE3722995A1 Process for the utilisation of sulphite-containing flue gas desulphurisation products |
| 01/18/1989 | EP0299306A2 Process for the preparation of hydrogen fluoride and anhydrite |
| 01/17/1989 | CA1248735A1 Method and apparatus for dry desulfurization of exhaust gas |
| 01/12/1989 | DE3721684A1 Verfahren zum nassen entfernen von schwefeldioxid A method for wet remove sulfur dioxide from |
| 01/10/1989 | US4797265 Digestion of phosphate rock with sulfuric acid to get gypsum |
| 01/05/1989 | DE3721233A1 Process for separating off calcium chloride from scrubbing waters of the flue gas scrubber |
| 01/03/1989 | US4795588 Method of preparing a luminescent Eu2 + activated strontium aluminate |
| 12/28/1988 | CA1247327A Continuous controlled process for removing sulphur oxides gases from stack gases |
| 12/27/1988 | US4793985 Brightness; ozonization of polyacrylate dispersant |
| 12/27/1988 | US4793979 Process for chemical separation of phosphorus ore |
| 12/21/1988 | CN88103235A Process of producing barium sulfate having chemically reactive surface |
| 12/15/1988 | DE3819652A1 Process for producing calcium sulphate alpha-hemihydrate, suitable as building material, from moist, finely divided flue-gas desulphurisation gypsum |
| 12/14/1988 | EP0294415A1 Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the scrubber units of a wet flue gas desulphurating plant. |
| 12/14/1988 | CN87104108A Method for producing barium carbonate |
| 12/08/1988 | DE3816513A1 Calcium sulphate alpha-mono:hydrate mfr. by autoclaving di:hydrate |
| 12/07/1988 | EP0293855A2 Granulates containing alkaline-earth carbonates |
| 12/07/1988 | EP0293622A1 Process for preparing barium sulphate having a chemically reactive surface |
| 12/01/1988 | WO1988009203A2 Process for manufacturing reactive calcium hydroxide for purifying gases and exhaust gases and process for purifying gases and exhaust gases |
| 11/29/1988 | US4788047 Process for causing the gaseous sulfur compounds of flue gases to react to form solid compounds which can be separated from the flue gases |
| 11/24/1988 | DE3714035A1 Process for producing calcium sulphates capable of setting and the use thereof |
| 11/23/1988 | EP0292083A2 Method of producing reactive calcium hydroxides for gas and exhaust gas purification, and method of purifying gases and exhaust gases |
| 11/23/1988 | CN88102521A Purifying method for the salt of barium |
| 11/17/1988 | EP0291271A1 Method of purifying natural calcium carbonate ores |
| 11/15/1988 | CA1244627A1 Process for separating off calcium nitrate tetrahydrate by crystallization |
| 11/09/1988 | CN87101234A Process for producing strontium carbonate by calcination |
| 11/08/1988 | CA1244246A1 Extraction process for removing and recovering metals from aqueous solutions |
| 11/03/1988 | DE3813454A1 Verfahren zur herstellung von anorganischen metallverbindungen mit ultrahoher reinheit Process for the preparation of inorganic metal compounds with ultra-high purity |
| 11/02/1988 | EP0289394A2 Process for the purification of a barium salt |
| 10/27/1988 | DE3712679A1 Process for preparing calcium sulphate dihydrate |
| 10/18/1988 | US4778671 Preparation of unagglomerated metal oxide particles with uniform particle size |
| 10/13/1988 | DE3711367A1 Process for preparing calcium sulphate hemihydrate |
| 10/12/1988 | EP0286564A1 Process for the production of high-purity magnesium oxide from minerals containing calcium and magnesium |
| 10/12/1988 | EP0286180A1 Method of preparing a luminescent Eu2+ activated strontium aluminate, aluminate obtained by said method and low-pressure mercury vapour discharge lamp provided with such an aliminate |
| 10/11/1988 | US4777027 Continuous process for preparing phosphoric acid and calcium sulphate |
| 10/06/1988 | WO1988007502A1 Process for converting calcium sulphate dihydrate into alpha-hemihydrate |
| 10/05/1988 | EP0285339A1 Metal oxide and metal sulfide particles and production thereof |
| 09/29/1988 | DE3709393A1 Verfahren zur umwandlung von calciumsulfatdihydrat in (alpha)-halbhydrat Process for the conversion of calcium sulfate dihydrate in (alpha) hemihydrate |
| 09/27/1988 | US4774064 Conversion of calcium compounds into solid and gaseous compounds |
| 09/22/1988 | WO1988007023A1 A method for the catalytic oxidation in aqueous medium of sulphite and/or bisulphite to sulphate |
| 09/21/1988 | EP0282521A1 Improved binders for refractories |
| 09/14/1988 | EP0282027A1 Calcium carbonate powder |
| 09/07/1988 | EP0169842B1 Method for the preparation of phosphoric acid and calcium sulphate |
| 08/31/1988 | EP0280000A1 Process for manufacturing anhydrite and apparatus for carrying out the process |
| 08/18/1988 | DE3703377A1 Process for preparing ultra-fine barium sulphate by precipitation |
| 08/17/1988 | EP0278602A1 Aqueous suspensions of calcium-containing fillers |
| 08/09/1988 | US4762590 Causticizing process |
| 07/28/1988 | WO1988005423A1 Tabular acicular gypsum and method of filling paper |
| 07/27/1988 | EP0276077A2 A process for forming finely divided calcium sulphate |
| 07/27/1988 | EP0275688A1 Process for manufacture of metal oxide |
| 07/20/1988 | CN87100005A Calcium hypochlorite process |
| 07/20/1988 | CN86107909A Salt and pure soda combine production method |
| 07/13/1988 | EP0274177A2 Process for the production of highly concentrated phosphoric acid |
| 07/13/1988 | EP0274020A1 Process and apparatus for the production of suspended alkaline-earth carbonates |
| 07/12/1988 | US4756897 Process for preparing concentrated byproduct nitrate solutions |
| 07/06/1988 | CN85103386B Highly effective and impervious reinforcing agent used for mortar or concret |
| 06/30/1988 | WO1988004648A1 Process for the in situ recovery of calcium sulfate hemihydrate and/or calcium sulfate (anhydrite) from the washing units a wet flue gas desulphurating plant |
| 06/29/1988 | EP0272984A2 Conversion of calcium compounds into solid and gaseous compounds |
| 06/28/1988 | US4753787 Method and structure for forming a reaction product |
| 06/28/1988 | US4753740 Adding ammonium chloride or bromide or borate anion producing compound |
| 06/22/1988 | CN87107380A Desulfurization of gypsum |
| 06/22/1988 | CN87102928A Process for the production of highly concentrated phosphoric acid |
| 06/15/1988 | CN87106325A Process for desulfurization of flue gases |
| 06/14/1988 | CA1237870A1 Spray-dried inorganic oxides from non-aqueous gels or solutions |