| Patents for C01D 3 - Halides of sodium, potassium, or alkali metals in general (3,310) |
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| 12/08/1998 | US5846501 Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate |
| 11/25/1998 | CN1199710A Process for recovery of lithium and other metals and salts from brines in helminthoid evaporating system using solar energy |
| 11/25/1998 | CN1199709A Salt mine bittern deaminasing method |
| 11/24/1998 | US5840266 Dehydration of fluoride mixtures |
| 11/18/1998 | CN1040738C Process for purification of aqueous solution of alkali chloride to remove iodine |
| 11/10/1998 | US5833844 Thermally-driven ion-exchange process for lithium recovery |
| 10/27/1998 | CA2116468C Recycling of spent pot linings |
| 10/22/1998 | WO1998046527A1 Method for enriching raw salt |
| 10/22/1998 | CA2285680A1 Method for enriching raw salt |
| 09/30/1998 | EP0866768A1 Process for preparing siliceous alkali salt solutions |
| 09/29/1998 | US5814359 Salt solution for producing soy sauce and process for producing soy sauce |
| 09/16/1998 | CN1039802C Hydrotropic making halogen technology by separating salt and alkali in lake |
| 09/11/1998 | WO1998039252A1 Method of removing sulfate ions from aqueous solution of alkali metal chloride |
| 08/20/1998 | WO1998035911A1 Method and apparatus for desalinating sea water, natural salt and fresh water |
| 08/18/1998 | CA2138094C Method for processing kieserite concentrates containing langbeinite and anhydrite |
| 08/12/1998 | EP0857690A1 Process for the production of salt |
| 07/29/1998 | EP0854840A1 Salt extraction process and device |
| 07/22/1998 | CN1188077A Process for preparing salt by working up seawater |
| 07/22/1998 | CN1188076A Bittern comprehensive utilization method |
| 07/07/1998 | CA2029115C Method for removing sulfate ions from aqueous solution of alkali metal chloride |
| 07/01/1998 | EP0850875A1 Process for the production of chlorine dioxide |
| 06/25/1998 | WO1998026855A1 Method for preparing alkali metal fluoride pellets and gas scrubbing method using the same |
| 06/23/1998 | US5769906 Process for recovering the salt constituents from hardening-shop salt baths |
| 06/23/1998 | CA2222791A1 Procedure for making chlorine dioxide |
| 06/20/1998 | CA2218205A1 Well drilling and servicing fluids and methods of reducing fluid loss and polymer concentration thereof |
| 06/03/1998 | CN1183381A Method for producing gypsum, table salt and magnesium chloride from calcium-cantg. waste liquid and high- and low-temp. salt |
| 05/20/1998 | CN1182406A Salt making method and apparatus |
| 05/20/1998 | CN1038407C Process for the removal of sulphate ions present in saline solutions |
| 04/29/1998 | CN1180322A Nanofiltration of concentrated aqueous salt solutions |
| 04/29/1998 | CN1180046A Process for producing potassium chloride from carnallite |
| 04/29/1998 | CN1179992A Zirconium gel precipitate |
| 04/21/1998 | CA2125005C Method and apparatus for treatment of a potassium chloride mixture |
| 04/16/1998 | DE19642569A1 Purifying metal halide from organic and carbonaceous impurities |
| 03/24/1998 | US5729987 Desalinization method and apparatus |
| 03/18/1998 | EP0829549A1 Process for the removal of heavy metal impurities from a concentrated alkali chloride solution down to a rest value of 0,01 ppm |
| 03/11/1998 | EP0827487A1 Method for preparing a salt, particularly potassium chloride, by leaching and cooling a solution thereof |
| 02/26/1998 | WO1998007537A1 Strengthened metal halide particles and improved lamp fill material and method therefor |
| 02/18/1998 | CN1173466A Refined sodium chloride containing low calcium and magnesium and its prepn. method |
| 02/11/1998 | CN1172637A Metal fluoride particles and dental composition including said metal fluoride purticles |
| 02/10/1998 | US5716419 Process for crystallization of mineral salts |
| 02/05/1998 | DE19631520A1 Solar energy is used in a solution mining process in tropical or sub-tropical regions to produce a sol |
| 02/04/1998 | EP0821931A2 Metal fluoride particles and a dental composition including said metal fluoride particles |
| 02/04/1998 | EP0821615A1 Nanofiltration of concentrated aqueous salt solutions |
| 02/04/1998 | CN1172072A Process for concentration of lithium salt in high-magnesian bittern by using mirabilite circulating method |
| 01/27/1998 | CA2116277C Salt block release agents |
| 01/22/1998 | WO1998002402A1 Method for minimizing hydrogen halide corrosion in a partial oxidation process |
| 01/20/1998 | US5711019 Method for treating electrolyte to remove Li2 O |
| 01/20/1998 | CA1339624C Process for controlling a sodium sulfate-containing residue |
| 01/14/1998 | CN1169954A Co-production of potassium sulfate,sodium sulfate and sodium chloride |
| 01/07/1998 | CN1169397A Ternary brine denitration liquid |
| 01/06/1998 | CA2039881C Purification of chlor-alkali membrane cell brine |
| 12/30/1997 | CA2041914C Process for the recovery of sulphate |
| 12/04/1997 | WO1997045370A1 Method for producing an industrial aqueous sodium chloride solution |
| 12/04/1997 | CA2255585A1 Method for producing an industrial aqueous sodium chloride solution |
| 11/25/1997 | US5690820 Wellhead brine treatment |
| 10/29/1997 | EP0802883A1 Method for coproducing calcium carbonate and sodium hydroxide |
| 10/28/1997 | US5681477 Variations in temperature |
| 10/28/1997 | US5681447 By adsorption |
| 10/15/1997 | EP0801028A2 Method for selective recovery of salt components from nitrite/nitrate-containing, used hardening salts |
| 10/13/1997 | CA2202416A1 Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate |
| 09/24/1997 | EP0796223A1 Co-production of potassium sulfate, sodium sulfate and sodium chloride |
| 08/27/1997 | CN1157800A Thermally-driven ion-exchange process for lithium recovery |
| 08/20/1997 | CN1157262A Process for producing lemery salt |
| 08/13/1997 | EP0614446B1 Production of alkali metal carbonates |
| 08/07/1997 | DE19603249A1 Catalytic decomposition of hypochlorite solutions |
| 07/29/1997 | US5651875 Process for producing alkali metal hydroxide |
| 07/29/1997 | US5651796 Method for producing low bulk density hollow fine powder of alkali metal compound |
| 07/17/1997 | DE19600615A1 Process and device to produce granulates from sheets |
| 07/08/1997 | CA2048431C Method and a device for preparing brine |
| 07/02/1997 | CN1153018A Salt solution for producing soy sauce and process for producing soy sauce |
| 06/19/1997 | WO1997021627A1 Process for preparing siliceous alkali salt solutions |
| 06/19/1997 | DE19546135C1 Verfahren zur Aufbereitung von kieselsäurehaltigen Alkalisalzlösungen, insbesondere für die Chlor-Alkali-Elektrolyse A process for the preparation of silica-containing alkali metal salt solutions, in particular for chlor-alkali electrolysis |
| 06/18/1997 | CN1151968A Crystallization technology for producing sodium chloride |
| 06/11/1997 | CN1151255A Method for prodn. of refined salt |
| 06/10/1997 | US5637228 Injecting raw brine and treatment chemical into depleted salt cavern; purification |
| 06/05/1997 | WO1997019893A1 Production of sodium fluoride and silica |
| 06/03/1997 | US5635587 Feeding sulfur compound to mixture of lithium hydroxide and alkali(ne) chloride, separating solid, adjusting sulfur content, adding dihalogeno aromatic compound |
| 05/15/1997 | DE19541558A1 Preparation of sodium-deficient lithium chloride solutions |
| 05/02/1997 | EP0770427A2 Thermally-driven ion-exchange process for lithium recovery |
| 04/30/1997 | CN1148516A Continuously self-cooling crystalizing technology |
| 04/17/1997 | WO1997013722A1 Salt extraction process and device |
| 04/09/1997 | EP0767140A1 Process for the recovery of salt components from hardening salt baths |
| 04/08/1997 | US5618437 Process for removing sulphate from aqueous solution |
| 04/07/1997 | CA2187053A1 Process for recovering the salt constituents from hardening-shop salt baths |
| 03/25/1997 | US5614104 Process and apparatus for the continuous determination of the sylvine saturation of hot solutions for monitoring and controlling the hot solubilizing of a crude potash salt |
| 03/19/1997 | EP0762994A1 Method and device for reprocessing salt used for the temporary salting of products |
| 03/18/1997 | US5612383 Basic anionic exchange resins with sulfate groups prepared from poly(meth)acrylonitrile or poly(meth)acrylate with polyamines and containing sulfate ions |
| 03/12/1997 | EP0683689A4 Off-gas scrubber system. |
| 03/05/1997 | CN1034173C Method for separating coffeine from tea waste |
| 02/20/1997 | WO1997006105A1 Electrolytic cell brine feed treating system |
| 01/29/1997 | EP0606447B1 Method for producing tetrafluorosilane and aluminum fluoride by hydrofluoric acid digestion of silica/alumina matrix |
| 01/29/1997 | EP0603218B1 Method for producing an aqueous industrial sodium chloride solution |
| 12/24/1996 | US5587083 Nanofiltration of concentrated aqueous salt solutions |
| 11/26/1996 | US5578218 Brine treatment method |
| 11/07/1996 | WO1996034999A1 Bromide removal |
| 10/24/1996 | WO1996033005A1 Nanofiltration of concentrated aqueous salt solutions |
| 10/23/1996 | CN1033080C Method of purifying alkali metals chlorides aqueous solution by removing ammonium and iodine |
| 10/08/1996 | US5562890 Production of alkali metal carbonates |
| 10/08/1996 | US5562755 Process for the treatment of langbeinite and anhydrite containing kieserite concentrates |
| 09/26/1996 | WO1996029287A1 Process for the production of granulated potassium chloride |