| Patents for C01D 7 - Carbonates of sodium, potassium, or alkali metals in general (1,753) |
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| 09/11/2002 | CN1090529C Process and device for producing granulates by fluidised-bed spray granulation |
| 09/06/2002 | WO2002068328A1 Abrasion-resistant agglomerate mineral substance granule, powder comprising such granules and production method therefor |
| 08/29/2002 | WO2001028925A9 Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine |
| 08/28/2002 | EP0861094B1 Gas/vapor delivery from solid materials |
| 08/28/2002 | CN1365958A Process for preparing K fertilizer (K salt) from K-enriched rock and lime by hydrothermal method |
| 08/28/2002 | CN1365957A Process for preparing K fertilizer or K salt from K-enriched rock and lime by hydrothermal method |
| 08/14/2002 | EP1230159A1 Method for formulating food grade sodium bicarbonate |
| 08/14/2002 | EP0969964A4 A thermal storage and transfer device |
| 08/06/2002 | US6428759 Production of feed liquors for sodium carbonate crystallization processes |
| 07/31/2002 | EP1227063A2 Method for the preparation of sodium percarbonate granules having enhanced stability |
| 07/18/2002 | US20020092309 Process for the safe storage of sodium percarbonate in bulk containers |
| 07/04/2002 | WO2002051746A1 Method for securely placing sodium percarbonate in bulk containers |
| 07/04/2002 | CA2432562A1 Method for securely placing sodium percarbonate in bulk containers |
| 06/26/2002 | EP1217125A2 Acrive substance for the deacidification of printed matter |
| 06/25/2002 | US6409982 Process for production of potassium carbonate sesquihydrate |
| 06/11/2002 | US6403260 Carbon product rich in lithium for use as negative electrode in a lithium cell |
| 06/05/2002 | CN1351908A Method for recovering hydrazine hydrate continuous distillation salt mud |
| 06/04/2002 | US6399038 Sodium sesquicarbonate ore is calcined and dispersed in an aqueous solution saturated with hydrated sodium carbonate and resulting suspension is subjected to aging, at the end, collecting the hydrated calcium carbonate crystals |
| 05/09/2002 | US20020054842 Process for the recovery of soda ash |
| 05/01/2002 | CN1346799A Process for turning waste solution from production of soda to lime |
| 04/17/2002 | EP0821618B2 Process and device for producing granulates by fluidised bed spray granulation |
| 04/10/2002 | EP1042226B1 Production of water-free soda |
| 04/10/2002 | CN1343622A Getting alkali from salt solution and calcining sesquicarbonate of soda |
| 03/21/2002 | WO2001084714A3 Molecular arrangement with a structural configuration and use thereof for quantum-mechanical information processing |
| 03/05/2002 | US6352653 Fine sodium hydrogen carbonate |
| 02/20/2002 | CN1336324A Sodium carbonate extracting process from caustic lime containing sodium sulfate |
| 02/06/2002 | CN1334239A Process for neutralizing and wettiong sodium hydroxide on solid surface directly with CO2 gas |
| 01/24/2002 | US20020009409 Process for the recovery of soda ash |
| 01/24/2002 | DE10032127A1 Mechanisch stabile Soda-Partikel Mechanically stable soda particles |
| 01/09/2002 | EP1170256A2 Mechanically stable soda particles |
| 01/09/2002 | CN1330612A Method of formulating alkali metal salts |
| 01/09/2002 | CN1330611A Method of ammonium sulfate purification |
| 01/03/2002 | US20020001561 Process for making sodium carbonate |
| 01/02/2002 | CN2468995Y Vapor direct incineration reactor |
| 01/01/2002 | US6334990 Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine |
| 01/01/2002 | US6334989 Production of water-free soda |
| 12/20/2001 | WO2001096243A1 Process for desalination of seawater |
| 12/05/2001 | EP0833799B1 Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate |
| 12/05/2001 | CN1324764A Method of producing low-salt sodium carbonate |
| 11/27/2001 | US6322767 Process for making sodium carbonate decahydrate from sodium carbonate/bicarbonate liquors |
| 11/22/2001 | DE10123132A1 Molecular arrangement with geometrically regular structure, useful e.g. for quantum computer, grating or molecular sieve, consists of adducts of cage molecules linked by pairs of key-lock addends |
| 11/08/2001 | WO2001084714A2 Molecular arrangement with a structural configuration and use thereof for quantum-mechanical information processing |
| 10/17/2001 | CN1317447A Process for preparing high-quality low-salt low-potassium heavy sodium carbonate and ammonium chloride by direct calcine of vapor, washing and hydration |
| 10/16/2001 | CA2237425C Method for preparing a salt, particularly potassium chloride, by leaching and cooling a solution thereof |
| 10/10/2001 | EP1140701A1 Process for the production of sodium carbonate anhydrate |
| 10/02/2001 | US6296817 Crushing dross into particles, classifying by size, leaching smaller particles with aqueous sodium hydroxide solution to form sodium aluminate, hydrolyzing to aluminum hydroxide, remelting larger particles to recover aluminum metal |
| 09/26/2001 | CN1314310A Method for producing low salt low potassium heavy mass sodium carbonate by one step process |
| 09/26/2001 | CN1314309A Method for producing potassium carbonate by using potassium salt ore dressing mother solution as main raw material |
| 09/25/2001 | US6294066 Apparatus and process for electrodialysis of salts |
| 09/18/2001 | US6290872 Composition containing at least sodium bicarbonate, preparation method therefor and uses thereof |
| 09/04/2001 | US6284288 Use of silica as agent for controlling the degradation of bicarbonate, resulting mixture and its application |
| 09/04/2001 | US6284005 Of monohydrate crystals by introduction of anhydrous sodium carbonate into supersaturated brine solution, controlling supersaturation and its relief to achieve growth rather than crystal nucleation and new formation |
| 08/22/2001 | EP1124756A1 Method of ammonium sulfate purification |
| 08/22/2001 | CN1309085A Process for separating alkaline-contg. hydrazine hydrate salt mud |
| 08/15/2001 | CN1308020A Green chemical process for sodium carbonate production |
| 08/08/2001 | EP1121327A1 Method of formulating alkali metal salts |
| 08/07/2001 | US6270740 Treated with a cationic compound, such as a quaternary amine, to react with carbon-containing contaminants and filtering the product. the filtered modified sodium carbonate solution is then crystallized and dried. |
| 08/01/2001 | EP1028914B1 Carbon product rich in lithium for use as negative electrode in a lithium cell |
| 07/18/2001 | CN1068562C Method for oxidation of at least one alkaline metal |
| 07/12/2001 | US20010007650 Bed plate below heat exchanger; collection chute; air pollution control |
| 06/26/2001 | US6251346 Solution mining of carbonate/bicarbonate deposits to produce soda ash |
| 06/14/2001 | WO2001010830A3 Recrystallization process |
| 06/13/2001 | CN1298855A Process for recovering nitrogen-contained organic alkali |
| 06/06/2001 | CN1297847A Comprehensive utilization method of waste ammonia sode liquid and sodium sulfate containing waste liquid |
| 05/31/2001 | US20010002243 Method of producing modified sodium carbonate crystals for the production of sodium bicarbonate |
| 05/23/2001 | CN1295975A Method for raising purity of sode product and apparatus thereof |
| 05/10/2001 | US20010001037 Process for producing sodium salts |
| 05/08/2001 | US6228335 Process for the production of sodium carbonate crystals |
| 05/03/2001 | WO2001030698A1 Method for formulating food grade sodium bicarbonate |
| 05/01/2001 | US6224731 Apparatus and process for electrodialysis of salts |
| 04/26/2001 | WO2001028925A1 Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine |
| 04/26/2001 | CA2387884A1 Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine |
| 04/25/2001 | CN1064930C Method and apparatus for incineration treatment of caprolactam saponification waste lye to recover sodium carbonate |
| 04/24/2001 | US6221225 Apparatus and process for electrodialysis of salts |
| 03/27/2001 | US6207123 Process for producing sodium salts |
| 03/21/2001 | EP1084299A1 Active substance and device for the deacidification of printed matter |
| 03/01/2001 | WO2001014254A1 Process for producing alkali metal hydrogen carbonate |
| 02/15/2001 | WO2001010830A2 Recrystallization process |
| 01/16/2001 | US6173840 Beneficiation of saline minerals |
| 12/12/2000 | US6159252 Nozzles at least partially directed towards each other are arranged in such a manner and the quantity of spray is adjusted in such a manner that their spray jets collide within the fluidised bed; no liquid strike-through |
| 11/15/2000 | EP1051353A1 Method for purifying a gas consisting of acid compounds |
| 10/25/2000 | CN1270926A Process for improving quality of sesquisoda crystallization |
| 10/25/2000 | CN1270925A Cold separation and carbonization process for preparing sodium carbonate from natural soda |
| 10/25/2000 | CN1270924A Sodium bicarbonate for pulp-mixing medicine preparation |
| 10/24/2000 | CA2015115C Sodium bicarbonate and process for its crystallisation |
| 10/11/2000 | EP1042226A1 Production of water-free soda |
| 10/04/2000 | CN2399371Y Variable gas soda making carbonators |
| 09/19/2000 | US6120745 As a melt |
| 08/30/2000 | CN1055901C Combined prodn. process of potassium carbonate and light magnesium carbonate |
| 08/23/2000 | EP1028914A1 Carbon product rich in lithium for use as negative electrode in a lithium cell |
| 08/22/2000 | US6106796 Precipitating sodium bicarbonate; centrifuging, washing, saturating, conditioning by heating to release carbon dioxide and ammonia; decomposition with sulfuric acid |
| 08/08/2000 | US6099817 Heat treating sodium bicarbonate |
| 07/25/2000 | US6092665 Beneficiation of saline minerals |
| 06/28/2000 | EP1013607A1 Production of water-free soda |
| 06/28/2000 | CN1257833A Process for preparing low-salt heavy sodium carbonate by liquid-phase hydration method |
| 06/28/2000 | CN1257832A Process for comprehensive application of mirabilite |
| 06/27/2000 | US6080977 Apparatus for concentrating salt-containing solutions with microwave energy |
| 06/07/2000 | CN1053165C Method for prodn. of high-purity iron oxide red by using ammonia-soda process |
| 06/02/2000 | WO2000030976A1 Process for the production of sodium carbonate anhydrate |
| 05/31/2000 | EP1004546A1 Process for the production of sodium carbonate anhydrate |