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| Number | Title | Issue Date |
| 8273321 | Analytical grade salt A three-step process for the preparation of analytical grade sodium chloride from rock salt was developed. ... | 09/25/2012 |
| 7695707 | Iodizing agent and process for preparation thereof A method for preparation of iodizing agent for the use in the formulation of iodized salt that offers excellent stability of iodine in iodized salt is developed and the unrefined salt iodized with this compound was tested for its stability in presence of moisture, t... | 04/13/2010 |
| 7217402 | Apparatus and method for making metal chloride salt product A method of producing metal chlorides is disclosed in which chlorine gas is introduced into liquid Cd. CdCl2 salt is floating on the liquid Cd and as more liquid CdCl2 is formed it separates from the liquid Cd metal and dissolves in the salt. T... | 05/15/2007 |
| 7186394 | Retarding agents for preparing purified brine The invention relates to a process to produce brine of improved purity wherein a salt source, contaminated with sulphate ions and alkaline (earth) metal ions, is dissolved in water in the presence of an effective amount of a retarding agent comprising at least one l... | 03/06/2007 |
| 7144568 | Method and device for carrying out a reaction in liquid medium with gas evolution Described is a process and a device for carrying out a reaction in liquid medium during which evolution of gas occurs. The process can be applied in particular to a reaction employing a peroxide such as hydrogen peroxide and, in particular, to the reduction of chlor... | 12/05/2006 |
| 7117164 | System and method of demand planning for intermediate and by-products A system (100) for demand planning includes memory (116) containing a value representing a demand quantity of at least one end product that a manufacturer (102) is to produce. Production of the demand quantity of the end product includes product... | 10/03/2006 |
| 7087209 | Method for producing a halide brine A method for producing halide brine wherein an alkali and a reducing agent are added to an aqueous fluid having a density greater than 8.30 lb/gal., (0.996 kg/L) water, waste water or sea water for example. The resulting fluid is then contacted with a halogen to for... | 08/08/2006 |
| 7077968 | Method for continuously filtering raw brine for use in chlor-alkali electrolysis The method of continuously processing raw brine with a solids content to obtain substantially solids-free pure brine (E) for use in chlor-alkali electrolysis. In this method the raw brine (A) is separated, by means of a decanter (1), into a clear brine (B) wi... | 07/18/2006 |
| 7041268 | Process for recovery of sulphate of potash The present invention is directed to a novel integrated process for the recovery of sulphate of potash (SOP) from sulphate rich bittern. The process requires bittern and lime as raw materials. Kainite type mixed salt is obtained by fractional crystallization of the ... | 05/09/2006 |
| 7037481 | Production of ultra pure salt This invention relates to methods and installations for producing ultra pure sodium chloride salt crystals primarily for use in saturating depleted brine resulting from the electrolytic decomposition of saturated brine in chlor alkali membrane cells for the producti... | 05/02/2006 |
| 7033562 | Ammonia recovery in the preparation of silazanes and polysilazanes Silazanes and/or polysilazanes are prepared by ammonolysis reaction in liquid anhydrous ammonia by introducing at least one halosilane into the ammonia. In addition to the silazane and/or polysilazane, an ammonolysis by-product also results. A substantially more eff... | 04/25/2006 |
| 7014832 | Simultaneous recovery of potassium chloride and KCL enriched edible salt The present invention relates to recovery of industrial grade potassium chloride and low sodium edible salt from bittern as part of an integrated process. The process comprises, mixing low sulphate concentrated feed bittern (a by-product of salt industry) of density... | 03/21/2006 |
| 6949226 | Sodium-based dechlorinating agent and waste treatment equipment A sodium-based dechlorinating agent is added to a flue gas; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water; water-insoluble constituents are separated from... | 09/27/2005 |
| 6913742 | Process for the purification of inorganic salt containing organic material and purified salt for electrolysis of sodium chloride An object of the present invention is to provide an effective and efficient process for the treatment of an inorganic salt containing an organic material which can solve various problems with the prior art, i.e., process for purifying an inorganic salt containing an... | 07/05/2005 |
| 6890509 | Process for recovery of low sodium salt from bittern A new process for recovery of Low Sodium Salt from bittern has been described in the present invention, the said process comprising desulphatation of bittern (by-product of salt industry), evaporation of bittern in solar pans and processing of solid mixture with wat... | 05/10/2005 |
| 6849199 | Snow and ice-melting granules and method for preparing same Snow and ice-melting granules prepared from compacted blends of salts of alkali and/or alkaline earth metals and a method for preparing such granules, are provided. The inventive granules have improved mechanical properties and, as such, are not readily reduced to a... | 02/01/2005 |
| 6846417 | Co-retarding agents for preparing purified brine The invention relates to a process to produce brine of improved purity by dissolving salt that contains a calcium sulfate source in water, in the presence of a retarding agent, while using one or more co-retardants to bind contaminants that could interfere with the ... | 01/25/2005 |
| 6763051 | Treatment of chloralkali feeds containing hydrogen peroxide and base A method and apparatus for removing BHP contaminants (alkali hydroxide and H2O2) from a recycled aqueous alkali chloride solution stream before the stream is fed to a chloralkali cell so that the contaminants do not impair the operation of a ch... | 07/13/2004 |
| 6692720 | Method for producing sodium chloride crystals Process for the production of sodium chloride crystals from a sodium chloride brine contaminated by potassium chloride and sulphate ions, according to which a calcium compound (32) is added to the brine (48) to crystallize glauberite (35), which is isolat... | 02/17/2004 |
| 6652820 | Methods of making cesium salts and other alkali metal salts A method of making a cesium salt is described and involves reacting a cesium sulfate containing solution with lime to form 1) a solution containing at least cesium hydroxide and 2) a residue comprising calcium sulfate. The method further involves removing... | 11/25/2003 |
| 6645458 | Method for making an aqueous sodium chloride solution Process for the manufacture of an aqueous sodium chloride solution, according to which a solid material comprising sodium chloride and heavy metals is dispersed in water, the aqueous medium thus obtained is alkalinized so as to precipitate the heavy metal... | 11/11/2003 |
| 6599565 | Bittern-containing common salt grains and process for preparing the same The invention provides a common salt having the rounded-off savory taste of natural common salt and yet a reduced tendency toward deliquescence and coagulation and a process for producing the same. The invention further provides a method for fractional re... | 07/29/2003 |
| 6524546 | Process for making calcium chlorides A new process for producing calcium chloride and other metal halides from the carbonates, bicarbonates, oxides of these metals. The process utilizes the discovery that hydrogen halides, when used in a true or conventional fluidizing medium in shallow beds... | 02/25/2003 |
| 6503473 | Process for separating solid compound other than lithium hydroxide A process for separating a solid compound other than lithium hydroxide, such as sodium chloride, in which lithium hydroxide is hydrosulfurized by bubbling gaseous hydrogen sulfide through an aprotic solvent, such as a polar organic compound, containing li... | 01/07/2003 |
| 6500216 | Method and apparatus for desalinating sea water, natural salt and fresh water A method and an apparatus of producing natural salt or fresh water by treating sea water in an extremely short period of time and with high efficiently. The distilled water and salt components are treated for expediting crystallization of the salt compone... | 12/31/2002 |
| 6478828 | Process for the crystallization of an inorganic substance A process for crystallization of an inorganic substance includes preparing a supersaturated solution of the inorganic substance to be crystallized in a solvent which is a liquid; forcing a stream of the supersaturated solution upwardly through successivel... | 11/12/2002 |
| 6455022 | Purification of aqueous alkali metal chloride solutions by removal of ammonium/iodine values therefrom Aqueous alkali metal chloride solutions, typically destined for electrolysis for the production of chlorine and containing a contaminating amount of iodine values in other than the periodate state, are purified by oxidizing the iodine values therein to th... | 09/24/2002 |
| 6409981 | Process for removing chlorine from gas stream A process for the scrubbing of chlorine is scrubbed from a chlorine-containing gas using an aqueous feed liquor containing an excess of alkali to give an effluent liquor containing chloride and hypochlorite ions is disclosed. The effluent liquor is recycl... | 06/25/2002 |
| 6376738 | Process and system for treating material containing noxious components A process for treating a waste or treatable material containing noxious component(s), comprising the following steps: (1) carrying out a first step for the treatable material, the first step including (a) mixing a treatment agent with the treatable materi... | 04/23/2002 |
| 6267789 | Method for enriching raw salt Process for enriching crude salt, in which the crude salt is ground and then cooled in a saturated aqueous sodium chloride solution, to a temperature below the anhydrous sodium chloride to sodium chloride dihydrate transition temperature, a stock of a pow... | 07/31/2001 |
| 6254846 | Process for purifying fumes and for manufacturing an aqueous sodium chloride solution Process for purifying fumes originating from the incineration of household waste and for manufacturing an aqueous sodium chloride solution, according to which the fumes (3) are subjected to a dust-removal operation in order to separate out the ash (5), wh... | 07/03/2001 |
| 6190636 | Chloro-hydrogenation of sodium sulfate and other alkali-metal sulfates A novel method is described whereby chlorine and sodium sulfate waste by-products from chemical by-products are recycled to form useful chemicals. Sodium sulfate is first reacted to form a metal sulfate and sodium chloride. The sodium chloride may be used... | 02/20/2001 |
| 6063345 | Method of separating NaCl from a LiCl solution Disclosed is a method of separating NaCl from a NaCl contaminated aqueous LiCl solution involving concentration of the solution, cooling of concentrated solution and separation of the crystallized NaCl. The method is characterized in that the concentratio... | 05/16/2000 |
| 5984981 | Salt making method and apparatus A salt making method comprising putting a crude salt-water mixture (5) comprising crude salt or rock salt and bittern in a vessel (1), blowing the air from a pipe (7) into the mixture (5) with a pump (9), crystallizing the component salt out of the mixtur... | 11/16/1999 |
| 5935546 | Method for removing traces of heavy metals from concentrated alkali metal chloride solutions down into the range of 0.01 ppm A method is provided for removing traces of heavy metals from concentrated alkali metal chloride solutions down into the range of 0.01 ppm by coprecipitation from an acidic concentrated alkali metal chloride solution with iron oxide hydrate.... | 08/10/1999 |
| 5846290 | Method for the recovery of group IA salts during the treatment of industrial process waste streams A method for the production of Group IA salts during a process for the recycling of industrial waste streams containing Group IA compounds and iron and/or zinc compounds, by heating the waste stream in a reducing atmosphere, treating the exhaust fumes fro... | 12/08/1998 |
| 5651796 | Method for producing low bulk density hollow fine powder of alkali metal compound A low bulk density hollow fine powder of alkali metal compound can be produced from an aqueous solution of the compound by one step. The method for producing a low bulk density hollow fine powder of alkali metal compound according to the present invention... | 07/29/1997 |
| 5545390 | Process for the destruction of halocarbons A process for the destruction of a halocarbon, which process comprises reacting the halocarbon with molten sodium at an elevated temperature to produce the corresponding sodium halide or halides in a sludge in the molten sodium and separating the sludge f... | 08/13/1996 |
| 5478447 | Method for producing an aqueous industrial sodium chloride solution Process for the manufacture of an industrial aqueous solution of sodium chloride, according to which an aqueous mixture (12) containing an aqueous solution of sodium chloride and of polyvalent metals is prepared by introducing into water (10) a solid prod... | 12/26/1995 |
| 5230879 | Reduction of metal halates and recovery of metal halides This invention relates to a process for reducing metal halates to metal halides, the process comprising reacting a metal halate with a reducing agent in an aqueous alkaline reaction medium having a pH above about 7, wherein the amount of reducing agent is... | 07/27/1993 |
