| Patents for C01D 3 - Halides of sodium, potassium, or alkali metals in general (3,310) |
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| 02/12/1991 | US4992208 Stabilization of solid sodium chloride against mushing in an aqueous medium |
| 02/05/1991 | US4990701 Contacting a saturated halocarbon with an anhydrous melt containing potassium fluoride and hydrogen fluoride |
| 01/23/1991 | CN1048685A Technology and apparatus for united production of salt and potassium chloride |
| 01/03/1991 | DE3920487A1 Removing mercury ion from aq. solns. - by pptn. with formamidine:sulphinic acid followed by filtration |
| 01/02/1991 | CN2068422U Machinery of salt pan |
| 12/19/1990 | CN2067604U Vertical burrstone mill for salt added with iodine |
| 12/12/1990 | EP0401550A2 Process for binding dust in granulates |
| 12/12/1990 | CN1010769B Method of producing potassium salts using tobacco vein as raw material |
| 12/11/1990 | US4976946 Solvent extraction by using N,N-dialkylamide or acetonitrile solvent |
| 12/07/1990 | CA2017886A1 Procedure for dust control in granulated materials |
| 12/04/1990 | US4975200 Basification |
| 11/28/1990 | EP0399588A1 Process for purifying an aqueous alkali metal chloride solution from ammonia compounds and iodinated compounds |
| 11/09/1990 | CA2015165A1 Digestive crystallizing process and apparatus for purification of kc1 |
| 11/07/1990 | CN1046686A Salt collector |
| 11/01/1990 | WO1990012756A1 Process and device for treating brines and contaminated mineral salts or mixtures thereof |
| 10/31/1990 | EP0394607A1 Method and apparatus for the treatment of brines and polluted mineral salts and their mixtures |
| 10/31/1990 | CN1046510A Method for refining saline using witherite mineral powder |
| 10/30/1990 | US4966764 Lowering ph to solubilize aluminum salts, then raising it to precipitate them onto carrier particles |
| 10/24/1990 | CA2014954A1 Process and apparatus for the treatment of brines and contaminated mineral salts or mixtures thereof |
| 10/16/1990 | US4963341 Process for degrading hypochlorite and sodium hypochlorite |
| 10/04/1990 | DE3920544C1 Flue gas purificn. system downstream of refuse incinerator - has acid treatment stage receiving sodium hydroxide to form pure sodium chloride which recycled to mixer stage |
| 10/04/1990 | DE3910130A1 Process for preparing a concentrated solution of sodium sulphite and sulphate originating, in particular, from flue gas desulphurisation |
| 09/11/1990 | US4956157 Process for separating salts in seawater |
| 09/07/1990 | WO1990009960A1 Process for producing low aluminum membrane cell feedbrine |
| 09/07/1990 | WO1990009957A1 Process for the continuous recovery of hydrogen fluoride gas |
| 09/04/1990 | CA1273472A1 Process for producing salt, and salt thus made |
| 08/07/1990 | US4946565 Process for the production of alkali metal chlorate |
| 07/04/1990 | EP0376702A2 Aqueous ultra-dilute composite solution |
| 07/03/1990 | CA1271272A1 Method for the production of potassium chloride with a k.sub.2o content of more than 55 wt. from the fine salt resulting from the decomposition of carnallite |
| 06/28/1990 | CA2006826A1 Aqueous ultra-dilute composite solution |
| 05/29/1990 | US4929588 Sodium removal, from brines |
| 05/02/1990 | EP0366182A1 Method for the disposal of a residue containing sodium sulfate |
| 04/30/1990 | CA2001361A1 Gas injector for hypochlorous acid reactor |
| 04/26/1990 | DE3835728A1 Process for the production of powders in the particle size range 1-1000 nm and mouldings made therefrom and use thereof |
| 04/19/1990 | DE3835418A1 Process and apparatus for treating contaminated mineral salts or salt mixtures |
| 04/10/1990 | US4915705 Hydrolysis with aqueous ammonia |
| 03/22/1990 | DE3831305A1 Process for the preparation of crystals from solutions, in particular salt solutions, such as for example potassium salt solutions, by cold crystallisation |
| 03/21/1990 | CN1040561A Technology for producing magnesium sulphate, sodium chloride, and potassium chloride by means of "three high" (high temp. heating, settling and separating) method |
| 03/08/1990 | WO1990002097A1 Compacts of spray dried water soluble compounds |
| 03/07/1990 | EP0356854A2 Treatment of inorganic salts contaminated with organic compounds |
| 02/28/1990 | CN1040012A Treatment for waste liquor of safety powder and recovery of sodium sulfate and common salt |
| 02/28/1990 | CN1040011A Industrial installation for producing epsom salt and common salt at high/low temp. |
| 02/28/1990 | CN1039972A Process and plant for the crystallization of an inorganic substance and crystals of sodium chloride |
| 02/21/1990 | CN1039781A Method of purifying common salt brine and bittern |
| 02/07/1990 | EP0353845A1 Sodium chloride in tetrahedronal crystal form and aqueous solution containing the same |
| 02/06/1990 | CA1265535A1 Removal of impurities from amines |
| 01/31/1990 | EP0352847A1 Process and apparatus for the crystallization of a mineral substance |
| 01/17/1990 | EP0351143A2 Evaporating and cooling liquid |
| 01/03/1990 | CN2050420U Salt-collecting apparatus |
| 12/19/1989 | US4888099 Process for the production of alkali metal chlorate |
| 11/02/1989 | DE3825434C1 Obtaining useful substances from crude kieseritic potassium salt - comprises grinding, adding conditioning agent, charging salt triboelectrically, sepg. salt electrostatically etc. |
| 09/12/1989 | CA1259274A1 Process for removing available halogen from anolyte brine |
| 08/30/1989 | CN1035096A Preparation method of magnesium sulphate and sodium chloride from high temp. salt |
| 08/24/1989 | DE3805266A1 Process for removal of sulphate from alkali metal chloride brine |
| 08/23/1989 | CN1034907A Method of producing potassium salts using tobacco vein as raw material |
| 08/22/1989 | US4859343 Ion exchanging using antimonic or polyantimonic acid |
| 08/15/1989 | US4857200 Dechlorination of aqueous alkali metal chloride solution |
| 08/08/1989 | US4855059 Purification of brines with hydrous metal oxide ion exchangers |
| 07/18/1989 | CA1257510A1 Process for preparing a coated-particle salt substitute composition |
| 07/12/1989 | CN1033782A Purification method of sodium sulphate type bittern |
| 06/13/1989 | US4839003 Process for producing alkali hydroxide, chlorine and hydrogen by the electrolysis of an aqueous alkali chloride solution in a membrane cell |
| 06/06/1989 | CA1255248A1 Process for removing sulphate from electrolysis brine |
| 05/24/1989 | EP0316472A1 Silane production from magnesium hydride |
| 05/16/1989 | US4830837 Ion exchange |
| 05/09/1989 | CA1253670A1 Salt recovery from aluminum black dross |
| 04/20/1989 | WO1989003364A1 Method of reforming soluble salts to effect purification and increase crystal size thereof |
| 04/11/1989 | CA1252414A1 Electrolysis of alkali metal chloride solution |
| 04/05/1989 | CN1032149A Method for obtaining concentrated potassium chloride from material contained potassium |
| 03/28/1989 | US4816122 Preparation of aluminum fluoride from scrap aluminum cell potlinings |
| 03/01/1989 | CN1031359A Process for manufacturing potassium chloride and hyponatresale from carnallite |
| 02/21/1989 | US4806332 Method for preventing anhydrous potassium fluoride from solidification |
| 02/21/1989 | CA1250251A1 Procedure for electrostatic processing of ground potash salts containing kieserite |
| 01/17/1989 | US4797981 Process for the production of salt |
| 01/03/1989 | CA1247852A1 Process for preventing agglomeration of powders |
| 12/27/1988 | US4793936 Method of recovering alkali metal fluorides from organic slurry |
| 11/17/1988 | EP0291446A1 Process for separating impurities from 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 |
| 10/06/1988 | DE3808633A1 Method for producing dissolved salts and acids by ion exchanger resins |
| 10/05/1988 | CN87216600U Salt-conveying pipeline machinery |
| 08/30/1988 | US4767506 Conditioning with o-hydroxy-aromatic carboxylic acid and fatty acid |
| 07/20/1988 | CN86107909A Salt and pure soda combine production method |
| 07/19/1988 | CA1239273A1 Preparation of aluminium fluoride from scrap aluminium cell potlinings |
| 07/05/1988 | US4755303 Method of converting brines to useful products |
| 06/28/1988 | US4753740 Adding ammonium chloride or bromide or borate anion producing compound |
| 05/31/1988 | US4748015 Method of complex production of sodium bifluoride, active sodium fluoride, hydrogen fluoride and potassium nitrate |
| 05/31/1988 | US4747957 Brine treatment using ethylene carboxylic acid polymers |
| 05/31/1988 | US4747954 Ethylene-unsaturated acid copolymer |
| 05/31/1988 | US4747917 Scale-free process for purifying concentrated alkali metal halide brines containing sulfate ions as an impurity |
| 05/11/1988 | EP0266801A2 Process for manufacturing alkali hydroxide, chlorine and hydrogen by electrolysis of an aqueous alkali chloride solution in a membrane cell |
| 05/11/1988 | EP0266601A2 Process for preparing magnesium sulphates |
| 05/11/1988 | EP0266600A2 Process for preparing magnesium sulphates |
| 04/19/1988 | CA1235382A1 Brine systems for chlor-alkali membrane cells |
| 03/29/1988 | US4734290 Process for preparing a coated-particle salt substitute composition |
| 03/09/1988 | CN85109534B Method for removing lead from bittern by precipitation with lime |
| 02/24/1988 | EP0256840A2 Process for separation of acids and corresponding acid metal salts |
| 02/24/1988 | CN87105491A Vacuum vapourizing chamber made of ti-steel composite plate for salt-making |
| 02/16/1988 | US4725419 Silane production from magnesium hydride |
| 02/03/1988 | CN87104895A Process for the recovery of ammonia and fluoride solutions |
| 01/27/1988 | EP0254063A2 Process for the recovery of ammonia and fluoride values from ammonium fluoride solutions |
| 01/07/1988 | EP0251426A2 Selective removal of nitrate ions from salt solutions |