| Patents for C01D 7 - Carbonates of sodium, potassium, or alkali metals in general (1,753) |
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| 02/12/1986 | EP0171106A1 Process for obtaining an organic nitrogen base, insoluble in water, from water soluble hydrochlorhydrate of said base, and process for manufacturing sodium bicarbonate |
| 02/11/1986 | US4569676 Separation and purification of salts in a non-convective solar pond |
| 02/11/1986 | CA1200363A1 Dry carbonation process |
| 02/04/1986 | US4568522 Synthesis of carbon dioxide and hydrogen, formation and upgrading of methanol |
| 01/14/1986 | US4564508 Process for the recovery of sodium carbonate from salt mixtures |
| 01/07/1986 | US4563340 Solvay process filtered liquid |
| 12/31/1985 | US4561934 Precarbonating with flue has, evaporation crystallizing to separate chloride salt from solution |
| 12/10/1985 | US4557910 Crystallization of aqueous solution of partially calcined ore; high purity |
| 10/23/1985 | EP0084024B1 Stable supersaturated solutions of sparingly soluble salts |
| 07/17/1985 | EP0148524A1 Process for the regeneration of an organic solution of a water-insoluble organic nitrogen base from an organic solution of its hydrochloride and process or production of alkali-metal bicarbonate |
| 04/24/1985 | EP0138076A2 Process for producing anhydrous sodium carbonate |
| 03/27/1985 | EP0135323A2 Production of sodium bicarbonate by reversion of NaHC03-containing double salt |
| 03/13/1985 | EP0134118A2 A membrane process for converting sodium sulfate into sulfuric acid and sodium carbonate |
| 12/11/1984 | CA1179147A1 Process for the extraction of arsenic from solutions containing carbonates, sulfates, possibly an alcaline hydroxide and at least one of the metals vanadium, uranium and molybdenum |
| 12/04/1984 | US4486283 Electrodialysis |
| 11/27/1984 | US4485075 Addition of lime |
| 10/23/1984 | US4478599 Method of continuously controlling crystal fines formation |
| 09/18/1984 | US4472280 Cationic polymer, fatty-substituted quaternary ammonium salt |
| 07/10/1984 | US4459272 Dry carbonation process |
| 05/29/1984 | US4451439 Oxidant and catalyst |
| 05/09/1984 | EP0107886A1 Process for the combined preparation of chlorinated hydrocarbons and a carbonate of an alkali metal |
| 02/07/1984 | US4430310 Purification of impure Bayer process liquors |
| 12/20/1983 | CA1158835A1 Method for producing sodium hydrogen-carbonate and hydrogen-chloride |
| 12/01/1983 | EP0084024A4 Stable supersaturated solutions of sparingly soluble salts. |
| 11/22/1983 | CA1157228A1 Method for producing sodium hydrogen-carbonate and hydrogen-chloride |
| 09/27/1983 | US4406869 Crystallization, dehydration |
| 09/20/1983 | US4405592 Process for producing anhydrous sodium carbonate crystal |
| 08/30/1983 | US4401635 Mining sodium carbonate with sodium hydroxide solution |
| 08/16/1983 | US4399036 Proportioning system for bicarbonate dialysate |
| 07/27/1983 | EP0084024A1 Stable supersaturated solutions of sparingly soluble salts. |
| 06/28/1983 | US4390402 Process for regenerating spent seed materials used in magnetohydrodynamic power generation |
| 05/31/1983 | US4385920 Granulation of potash salts |
| 05/03/1983 | CA1145529A1 Process for producing anhydrous sodium carbonate crystal |
| 03/02/1983 | EP0073085A1 Process and plant for manufacturing monohydrated sodium carbonate |
| 03/01/1983 | US4375454 Electrostatic enrichment of trona and nahcolite ores |
| 02/15/1983 | US4374102 Polymers for controlling soda ash crystal formation |
| 02/03/1983 | WO1983000293A1 Stable supersaturated solutions of sparingly soluble salts |
| 10/28/1982 | WO1982003620A1 Method for extracting arsenic from solutions containing alcaline carbonates, sulphate, optionally hydroxide, as well as at least one of vanadium, uranium and molybdenum metals |
| 08/17/1982 | CA1129797A1 Hydrothermal alkali metal recovery process |
| 06/29/1982 | US4337234 By reacting aqueous sodium chloride with carbon dioxide in the presence of an amine and organic solvent |
| 06/15/1982 | CA1125473A1 Carbonation process for the manufacture of sodium bicarbonate |
| 05/25/1982 | US4331636 Calcining with chloride, chlorination, crystallization, calcining |
| 05/18/1982 | CA1123780A1 Production of alkali metal carbonates in a cell having a carboxyl membrane |
| 05/11/1982 | CA1123170A1 Process for the combined manufacture of chlorinated hydrocarbons and sodium bicarbonate |
| 04/27/1982 | US4326955 Hemodialysis with sodium bicarbonate dialysate prepared in plural stages |
| 03/23/1982 | US4321247 Process for preparing sodium bicarbonate and hydrogen chloride |
| 03/16/1982 | US4320106 Method for preparing sodium bicarbonate and hydrogen chloride |
| 01/05/1982 | US4309398 Reduction with hydrogen or carbon monoxide in presence of metal oxide, carbonation of soluble products |
| 12/01/1981 | US4303621 Process for the recovery of methionine and potassium bicarbonate |
| 11/10/1981 | US4299799 Carbon treatment of monohydrate crystallizer liquor |
| 10/20/1981 | CA1110828A1 Process for the purification of solutions containing carbonates, sulphates, possibly potassium or sodium hydroxide, and at least one of the metals vanadium, uranium, molybdenum |
| 09/29/1981 | CA1109634A1 Process for the preparation of monohydrated sodium carbonate crystals |
| 09/22/1981 | US4291002 Carbonation followed by multistage crystallization |
| 09/08/1981 | US4288419 Enhanced recovery of sodium carbonate from NaCl-containing sodium carbonate solutions |
| 09/08/1981 | CA1108356A1 Method of treating an alkali metal sulfide liquor |
| 09/01/1981 | US4286967 Double crystallization process to produce low organic, low silica soda ash |
| 08/25/1981 | US4285925 Hydration of sodium carbonate |
| 08/25/1981 | US4285915 Recovery of alkali values from trona ore |
| 08/11/1981 | US4283277 Slurrying in sodium carbonate and sodium bicarbonate with a flotation collector |
| 08/04/1981 | CA1106154A1 Granulation of potash salts |
| 06/30/1981 | CA1103886A1 Process for dehydrating hydrated salt in solar ponds |
| 04/28/1981 | CA1099892A1 Mhd seed regeneration |
| 04/22/1981 | EP0027194A1 Process for producing sodium bicarbonate and hydrogen chloride |
| 04/22/1981 | EP0027193A1 Process for producing sodium bicarbonate and hydrogen chloride |
| 04/08/1981 | EP0026610A1 All dry solid potassium seed regeneration system for magnetohydrodynamic power generation plant |
| 04/07/1981 | US4260594 Carbonation of sodium hydroxide |
| 03/24/1981 | US4258019 Process of regenerating alkali carbonate solutions formed by the desulfurization of hot gases |
| 03/17/1981 | US4256719 Process for the combined manufacture of chlorinated hydrocarbons and sodium bicarbonate |
| 02/24/1981 | US4252781 Preparation of sodium carbonate anhydride |
| 02/24/1981 | CA1096113A1 Fluidized bed recovery of sodium carbonate from spent cooking liquor |
| 01/27/1981 | US4247525 Method of and apparatus for removing sulfur oxides from exhaust gases formed by combustion |
| 01/06/1981 | US4243645 All dry solid potassium seed regeneration system for magnetohydrodynamic power generation plant |
| 12/16/1980 | US4239996 Potassium carbonate recovery |
| 12/16/1980 | US4239515 Gas-liquid contact reaction apparatus |
| 09/17/1980 | EP0015626A2 Process and plant for preparing sodium bicarbonate crystals |
| 08/26/1980 | US4219338 Hydrothermal alkali metal recovery process |
| 08/19/1980 | CA1083776A1 Preparation of sodium carbonate anhydride |
| 08/12/1980 | US4217330 Apparatus for production of sodium bicarbonate |
| 07/23/1980 | EP0013586A1 Process for the combined manufacture of chlorinated hydrocarbons and sodium bicarbonate |
| 07/01/1980 | CA1080429A1 Process and apparatus for bicarbonation |
| 06/03/1980 | CA1078581A1 Method of treating alkali metal sulfide and carbonate mixtures |
| 05/13/1980 | US4202667 Process for the separation of insoluble materials in the production of soda ash |
| 04/29/1980 | CA1076320A1 Prevention of calcium deposition from trona-derived sodium carbonate liquors |
| 01/29/1980 | CA1070457A1 Removal of sodium chloride from pulp mill operations |
| 01/15/1980 | US4183901 Process for crystallization of anhydrous sodium carbonate |
| 12/18/1979 | US4179493 Dehydration process |
| 12/12/1979 | EP0005981A1 Carbonation process for the manufacture of sodium bicarbonate |
| 11/14/1979 | EP0005301A1 Process for the removal of sulphur oxides from high-chloride flue gases |
| 10/31/1979 | EP0004883A2 Process for the preparation of free-flowing inorganic ammonium and alkali salts |
| 10/02/1979 | US4169812 Regeneration of scale-coated activated carbon with acid wash |
| 09/11/1979 | CA1062120A1 Process for the preparation of spray-dried calcium carbonate-containing granules |
| 08/07/1979 | CA1059726A1 Potassium carbonate recovery |
| 06/26/1979 | CA1057026A1 Reduction of aqueous thiosulfate solutions |
| 06/12/1979 | US4158043 Process for producing soda ash from natural alkali metal carbonate-containing ores |
| 05/15/1979 | US4154801 Process for purifying alkali metal hydroxide or carbonate solutions |
| 05/08/1979 | US4153670 Method of treating an alkali metal sulfide liquor |
| 04/24/1979 | US4151266 Method for the conversion of anhydrous sodium carbonate to Wegscheider's Salt |
| 04/24/1979 | US4151261 Countercurrent flow, temperature gradients |
| 04/18/1979 | EP0001537A1 Process for the treatment of solutions containing carbonate, sulfate, possibly hydroxide of sodium or potassium and at least one of the metals vanadium, uranium, molybdenum |
| 04/17/1979 | US4150205 Composite ion exchange resins having low residual amounts of quaternary ammonium cation |