Patents for C01F 11 - Compounds of calcium, strontium, or barium (8,019) |
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09/12/1978 | US4113835 Removing phosphate impurities from gypsum |
09/05/1978 | CA1037669A1 Compacted calcium chloride particulate |
08/29/1978 | US4110432 Prophylaxis |
08/29/1978 | US4110402 Recovery of strontium from brine that contains strontium and calcium |
08/22/1978 | US4108958 Extraction of Cu(II), Fe(III), Ni(II), Co(II), Cd(II), Zn(II), Ca(II) and Mg(II) metal values using 2-hydroxy iminoacetic acids |
08/22/1978 | US4108957 Aqueous slurry, forming calcium monophosphate, adding oxalic acid to precipitate calcium |
08/15/1978 | US4106918 Method of recovering fluorine from vapor of crude phosphoric acid solution |
08/15/1978 | CA1036572A1 Process for preparing materials having improved mechanical and thermal properties and materials obtained thereby |
07/25/1978 | US4102989 Simultaneous reductive and oxidative decomposition of calcium sulfate in the same fluidized bed |
07/18/1978 | US4101638 Process for the manufacture of a slurry containing highly concentrated phosphoric acid and calcium sulfate hemihydrate in a readily filterable form |
07/11/1978 | US4100264 From calcium chloride and diammonium carbonate |
07/11/1978 | US4100260 Regenerative method for quantitative removal of sulfur dioxide from stack gases |
07/11/1978 | US4100254 Industrial process of preparing magnesia of high purity |
07/04/1978 | US4098873 Counter-current process for passing a solid particulate reactant to a liquid reactant |
07/04/1978 | US4098871 Process for the production of powdered, surface-active, agglomeratable calcined material |
06/27/1978 | CA1033772A1 Cement manufacture |
06/06/1978 | US4093706 Method of production of synthetic fluorite having a selected grain size |
05/30/1978 | US4092402 Method for removing sulfur dioxide from exhaust gas |
05/30/1978 | US4092401 Process for reutilization of iron chlorides in aqueous solution |
05/23/1978 | US4091080 Method for the production of alpha type calcium sulfate hemihydrate |
05/09/1978 | US4088738 Process for producing phosphoric acid using mixed acid feed and a dicalcium phosphate intermediate |
04/25/1978 | US4086322 Acidulation of phosphate rock with solution containing primary potassium phosphate, precipitation of monocalcium phosphate and potassium fluosilicate |
04/25/1978 | US4086099 Method of preparing plaster |
04/18/1978 | US4085194 Absorption in sea water, formation of sulfites, oxidation to sulfates |
04/11/1978 | US4083942 Process for producing metal bromides |
04/11/1978 | US4083929 Beneficiation of phosphate rock |
03/28/1978 | US4081363 Mineral beneficiation by froth flotation: use of alcohol ethoxylate partial esters of polycarboxylic acids |
03/21/1978 | US4080428 Process for the purification of flue and other waste gas |
03/21/1978 | US4080427 Method of desulfurizing exhaust gases by wet lime-gypsum process |
03/07/1978 | US4078043 Process for preparing calcium fluoride from hexafluoro silicic acid and production of silicic acid gel or active silicic acid from said calcium fluoride |
02/28/1978 | US4076776 Calcium chloride prilling |
02/14/1978 | US4073864 Method of desulfurizing exhaust emission using pulverized slag as absorbent |
01/17/1978 | US4069300 Oxidation of calcium sulfite, surfactant |
01/03/1978 | US4066735 Process for demineralization of crustacea shells |
12/27/1977 | US4065320 Drying cement pellets |
12/06/1977 | US4061715 Hydrogen, water vapor |
12/06/1977 | US4061593 Stabilization of calcium oxide sulfate trapping materials |
12/06/1977 | US4061476 Sorption |
11/29/1977 | US4060586 Recovery of fluorides from gypsum |
11/29/1977 | US4060585 From barite, reduction with carbon, oxidation |
11/22/1977 | US4059674 Method for manufacturing phosphoric acid and gypsum |
10/11/1977 | US4053572 Process for preparing essentially pure barium fluoride crystals |
09/20/1977 | US4049774 Process for reducing formation of gypsum scale durng the washing of calcium sulphate hemihydrate crystals |
09/13/1977 | US4048287 Sulfur recovery method |
09/06/1977 | US4046856 Magnesium hydroxide absorber, gypsum |
08/30/1977 | US4045341 Method for the disposal of waste water containing ammonium ions, sulfate ions and organic substances |
08/23/1977 | US4044111 Method of treating calcium nitrate contained in denitration waste liquid |
08/23/1977 | US4043803 Process for the manufacture of a compacted synthetic flux based on calcium fluoride |
08/09/1977 | US4040803 Wet waste flue gas desulfurizing process using lime as absorbent |
08/02/1977 | US4039616 Process for the manufacture of stabilized, hardenable calcium sulphate by reacting crude phosphate with sulphuric acid |
07/26/1977 | US4038367 Process for the removal of SOx and NOx from waste gases using alkali metal or alkaline earth metal iodide |
07/26/1977 | US4038366 Method for removing hydrogen sulfide |
06/21/1977 | US4031195 Regenerative method removal of sulfur dioxide from stack gases |
06/21/1977 | US4031193 Process for preparing calcium fluoride from hexafluoro silicic acid |
06/21/1977 | US4031183 Process for calcining limestone |
06/14/1977 | US4029512 Gypsum suspension, saturated steam, calcining |
06/07/1977 | US4028237 Method and apparatus for treatment of fluorine-containing waste waters |
05/31/1977 | US4026991 Process for stabilizing lime mud |
05/31/1977 | US4026990 Production of low-fluorine gypsum as a by-product in a phosphoric acid process |
05/17/1977 | US4024220 Flue gas scrubbing and conversion of calcium sulfite to calcium sulfate |
04/19/1977 | US4018877 Production of calcium carbonate |
04/19/1977 | US4018875 Ammonium oxalate process |
04/12/1977 | US4017592 Process for production of aqueous hypochlorous acid solution |
03/22/1977 | US4013590 Alumina catalysts |
03/22/1977 | US4013578 Calcium carbonate |
03/01/1977 | US4010245 Production of hydrogen fluoride and calcium sulfate |
02/22/1977 | US4009244 Process for removing oxides of nitrogen and sulfur from exhaust gases |
02/22/1977 | US4009215 Trichlorofluoromethane, dichlorodifluoromethane, carbon tetrachloride |
02/15/1977 | US4008309 Process for crystallizing calcium nitrate |
02/01/1977 | US4006215 Recovering iron, nickel, or cobalt from sulfate solution |
02/01/1977 | US4006080 Process for the treatment of acidic waste liquid containing dissolved salts |
12/21/1976 | US3998928 Process for calcining pellet-shaped calcium hydroxide |
12/21/1976 | US3998596 Calcining and hydrating chambers |
12/07/1976 | US3996133 From a calcium and phosphate-bearing-sludge |
11/16/1976 | US3992217 Hydration, carbonation |
11/09/1976 | US3991172 By decomposing calcium carbonate |
11/09/1976 | US3990966 Flotation process for purifying calcite |
11/09/1976 | US3990642 By removal of discoloring contaminants |
11/02/1976 | US3989797 Process for removing sulfur oxides from gas streams |
11/02/1976 | US3989796 Method for removing sulfur dioxide in the form of calcium sulfite from combustion exhaust gas |
10/26/1976 | US3988418 Hydrometallurgical production of technical grade molybdic oxide from molybdenite concentrates |
10/19/1976 | US3987149 Method for removing sulfur dioxide from exhaust gas |
10/12/1976 | US3985860 Reacting sulfur dioxide with sodium carbonate, calcium hydroxide or carbonate to form calcium sulfite which is oxidized to calcium sulfate |
09/28/1976 | US3982930 Drilling, strontium nitrate |
09/21/1976 | US3981815 Process for utilizing collected material removed from effluent gas |
09/14/1976 | US3980756 Air pollution control system |
09/14/1976 | US3980240 Brightening of natural calcitic ores |
08/31/1976 | US3978298 Miniature switch having pivotal actuator with budging contact and position safety structure |
08/24/1976 | US3976447 Removal of hydrogen fluoride from gaseous mixture by absorption on alkaline earth metal fluoride |
08/03/1976 | US3972981 Method of preventing gypsum scale formation in phosphoric acid plant filters |
07/13/1976 | US3969493 Thermochemical process for manufacture of hydrogen and oxygen from water |
06/29/1976 | US3966894 Method of preparing barium hydroxide |
06/29/1976 | US3966427 Production of briquettes |
06/08/1976 | US3961903 Apparatus for reclaiming limestone mud |
06/01/1976 | US3961105 Method for the manufacture of coated calcium sulfate whisker fibers |
06/01/1976 | US3961027 Cyclic process for re-use of waste water generated during the production of UO2 |
06/01/1976 | US3961021 Scrubbing with alkali sulfite, reaction with calcium compound to produce gypsum |
05/25/1976 | US3959132 Hydrolysis to fluorides for precipitation |
05/18/1976 | US3957678 Method of manufacturing a luminescent sulfide |
05/11/1976 | US3956456 Spiral air flow |