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7621968 |
Process for producing low sodium sea salt from seawater
There is provided a low sodium sea salt and a method for producing the same. A first amount of natural seawater containing sodium, chloride, potassium, magnesium, sulfate and other trace minerals...
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7247284 |
Method and apparatus for regeneration of flue gas scrubber caustic solutions
A process to regenerate wet flue gas scrubber purge liquid into NaOH caustic suitable for make-up caustic for the scrubber is disclosed. Further, sulfur is removed from waste effluent in the form...
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7127913 |
Crystallisation of materials from aqueous solutions
The invention is directed to a process for recovering a crystalline material from an aqueous solution, which solution also contains organic contaminants, in which process the material is...
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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...
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6884269 |
Continuous method for manufacture of uniform size flake or powder
A method and apparatus for continuous fabrication of homogeneous thin flake or powder electrolyte material from inorganic salt, metallic or similar materials or from mixtures of such materials for...
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6881231 |
Reduction in mineral salt deposition
A composition for reducing deposition of a mineral salt from an aqueous supersaturated solution onto a solid surface in contact with the aqueous supersaturated solution which composition comprises...
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6723139 |
Method for recycling fine calcium fluoride powder
Process for recycling a composition comprising pulverulent calcium fluoride in the form of micrometric particles comprising: (i) a stage of mixing, in the presence of water, the said composition...
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6660049 |
Process for control of crystallization of inorganics from aqueous solutions
Process of crystallization of sodium bicarbonate from solution mined Nahcolite pregnant liquor comprising the use of from about 2 to 100 parts per million of lecithin, introduced full strength,...
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6340373 |
Process for recovering and treating of aqueous solutions
There is described a method for the treatment and processing of solutions of an organic fluid, water and one or more compounds of alkaline earth metals, alkali metals and metal ions, comprising the...
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6221322 |
Strontium nitrate and method for manufacturing same
Low-cost, high-purity strontium nitrate that is low in Ba, Na, Ca, Cr, and other impurities and that is suitable for use in airbags or the like is provided. High-purity strontium nitrate having a...
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6210803 |
Method for the production of a granulate for hemodialysis
The invention relates to a method for the manufacture of an electrolyte and acetic acid granulate for making a hemodialysis solution, the granulate comprising the electrolytes potassium chloride,...
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5882361 |
Method for producing calcium chloride scales
In the method, calcium chloride scales (75) are produced on a cooled surface (20), namely through the application of a layer (70) consisting of an aqueous CaCl 2 solution (7) to the cooled...
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5853686 |
Calcium carbonates of altered crystal habit or morphology and methods for producing same
Methods are disclosed in which first and second reactant salts and, optionally, a complexing agent are added to a non-aqueous reaction solvent to form a reaction system. The reactant salts, which...
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5769906 |
Process for recovering the salt constituents from hardening-shop salt baths
The process for environmentally acceptable and economical recovery of chloride salts from hardening-shop used salts utilizing the steps of leaching of the used salt, detoxification of the cyanide...
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5762901 |
Stabilized magnesium hydroxide slurry
A method for producing a stabilized magnesium hydroxide slurry comprising physically deflocculating the magnesium hydroxide solids in a starting slurry to produce a stabilized magnesium hydroxide...
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5716419 |
Process for crystallization of mineral salts
Mineral salts, e.g., potassium chloride, are crystallized from aqueous solutions thereof in the presence of a crystal growth promoting amount of lecithin or lecithin containing compositions....
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5618511 |
Process for producing ammonium sulfate from flue-gas scrubber waste liquor
A flue-gas scrubbing-liquor regeneration process that is based on contacting N-S compounds contained in a flue-gas scrubbing liquor with a lime/limestone solution in a double draw-off crystallizer...
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5607655 |
Olefin polymerization catalyst and precursor therefor
A generally dipyramidal-shaped catalyst precursor is prepared by dissolving magnesium dichloride and a suitable alcohol in a suitable solvent and then cooling to obtain a precipitate of the desired...
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5447543 |
Process for crystallizing inorganic salts
The present invention is an improved method for crystallizing inorganic salts. The inorganic salts that are suitable for this process are characterized by the fact that they form isothermic or...
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5439662 |
Process for making MgCl.sub.2 MgO with narrow granulometric distribution, catalytic components containing the same, process of using such supports to polymerize olefins, and resultant polyolefins
A process for the manufacture of MgCl 2 .MgO with narrow granulometric distribution by treatment of hydrated MgCl 2 with an alcohol followed by heat treatment after partial elimination of the...
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5296002 |
Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof
A form of calcium carbonate having a blocky rhombohedral crystal structure and properties including a surface area of from about 3 to about 15 m 2 g, an average discrete particle size of from...
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5281242 |
Method for recovering magnesium sulfate products from mixtures of epsomite and halite
A simple, efficient and inexpensive method of purifying magnesium sulfate from mixtures of epsomite and halite. The method allows for the preparation of substantially pure magnesium sulfate...
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5269818 |
Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof
A form of calcium carbonate having a blocky[-six-sided] rhombohedral crystal [habit ] structure and [a morphology, with] properties including a surface area of from about 3 to about 15 m 2 /g, an...
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5217565 |
Contactless heater floating zone refining and crystal growth
Floating zone refining or crystal growth is carried out by providing rapid relative rotation of a feed rod and finish rod while providing heat to the junction between the two rods so that...
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5211922 |
Process for the recovery of values from secondary aluminum dross
A process for recovery of metallic aluminum, sodium and potassium chloride and an aluminum oxide-metallic aluminum product from secondary aluminum dross. A secondary aluminum dross feed is...
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5173284 |
Process for preparation of purified calcium sulfate in an aqueous medium
A process for the preparation in an aqueous medium of purified calcium sulfate, with high whiteness, characterized in that it comprises: a) the formation of an aqueous solution by dissolution of...
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5173088 |
Process for preparing crystals of anhydrous sodium sulfide
Disclosed is a process for preparing crystals of anhydrous sodium sulfide, the process being characterized in that the process comprises the steps of heating crystals of polyhydrate of sodium...
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5106600 |
Process for producing tabular acicular gypsum crystals
A process for economically producing tabular acicular gypsum crystals in a continuously stirred reactor is disclosed. The process involves establishing a steady state atmospheric pressure reaction...
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5084254 |
Natural calcium carbonate ores
There is disclosed a process for purifying a calcium carbonate-containing mineral which process comprises the following steps: a) mixing the calcium carbonate-containing mineral with water and a...
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4851208 |
Process for the manufacture of spherical particles of metal compounds of group II of the periodic table
A process for the manufacture of substantially spherical particles of at least one metal compound of Group II of the Periodic Table, comprising dissolving such compound in a solvent therefor to...
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4723962 |
Process for recovering lithium from salt brines
An improved process is described for recovering lithium from evaporatively concentrated brines. Epsom salt recovered from the brine at about 0° C. is added to the concentrated lithium-containing...
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4685935 |
Process for producing pure magnesium sulphite
A process for producing a pure magnesium sulphite from crude crystalline magnesium sulphite. Into a full suspension or flow containing magnesium sulphite crystals at least one further...
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4569677 |
Process for separating off calcium nitrate tetrahydrate by crystallization
Separating Ca(NO 3 ) 2 .4H 2 O from a nitrophosphate digestion liquor by crystallization, wherein Ca(NO 3 ) 2 .4H 2 O seeding material with a particle size smaller than 100 μm is added to this...
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4568352 |
Alkali metal nitrate purification
A process is disclosed for removing contaminants from impure alkali metal nitrates containing them. The process comprises heating the impure alkali metal nitrates in solution form or molten form at...
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4533536 |
Process for the manufacture of potassium sulphate by treating solutions containing magnesium chloride and potassium chloride
Process for the manufacture of potassium sulphate from solutions containing magnesium chloride and potassium chloride from solutions, more particularly from mother liquors issuing from the...
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4533360 |
Method of obtaining magnesium sulphate from mixtures of salts
Method of extracting magnesium sulphate from mixtures constituted essentially of magnesium sulphate heptahydrate and sodium chloride by means of heat treatment, grinding and dry grading.
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4511485 |
Nonpolluting salts and method of making same
A reduced pollutant-containing salt mixture and method of making same is provided wherein a salt mixture partially comprised of calcium acetate and partially comprised of at least one other...
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4477323 |
Method for recovering zinc from a sulfidic zinc source
A method for processing a sulfidic zinc source to recover metallic zinc wherein the source is leached with an electrolysis cell acid, the leaching product is separated into a liquor and a primary...
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4474737 |
Process of purification of magnesic raw material
Process of purification of magnesic raw material. Sulphur dioxide is allowed to react with an aqueous suspension of calcinated magnesite, crude or contaminated magnesium oxide, magnesium hydroxide,...
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4435183 |
Process for rapid dewatering and drying of calcium sulfate hemihydrate
A process for rapidly dewatering and drying calcium sulfate hemihydrate in a centrifuging and flash drying operation by ejecting the wet solids from the centrifuge bowl directly into the flash...
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4348372 |
Process for the recovery of calcium chloride from calcium hypochlorite process effluents
Calcium chloride hydrates are recovered from calcium hypochlorite process effluents comprised of an aqueous solution of calcium chloride, calcium hypochlorite, and calcium chlorate in a process...
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4348371 |
Process for the recovery of calcium salts from calcium hypochlorite process effluents
A process for the recovery of calcium chloride hydrates and calcium chlorate compounds comprises: (a) blending an effluent comprised of an aqueous solution of calcium chloride, calcium chlorate,...
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4341752 |
Method for purification and concentration of MgCl.sub.2 -brines
Method for producing purified and concentrated MgCl 2 -brine by evaporation and crystallization from brines containing MgCl 2 , KCl, NaCl and MgSO 4 involving recirculation of carnallite and part...
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4333737 |
Reclamation of materials from photoflash cartridges
A process is provided for reclaiming materials from photoflash cartridges ich are comprised of aluminum, barium nitrate and potassium perchlorate. The photoflash composition is dumped into heated...
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4315667 |
Fiber for optical transmission having single crystal core
A fiber for optical transmission, in which a core thereof for propagating light is formed of a single crystal of an ionic substance except positive ions having no closed cell electronic structure...
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4298379 |
Production of high purity and high surface area magnesium oxide
Disclosed is a process for refining a magnesium and nickel containing ore, comprising the steps of grinding the ore; preparing a slurry of the ground ore in sulfuric acid containing less than ten...
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4294807 |
System for removing solids from a used lime or limestone slurry scrubbing liquor in flue gas desulfurization
The flue gas desulfurization process using a lime or limestone slurry scrubbing solution producing used liquor containing calcium sulfite or sulfate (typically gypsum). Precipitated particles are...
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4286025 |
Detector for thermoluminescence dosimetry
A detector for thermoluminescence dosimetry (TELDE™) based on an ionic compound is shaped as a pellet. The pellet is composed of a plurality of single-crystal particles bonded together by...
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4248848 |
Dihydrate of calcium hypochlorite and method for manufacture thereof
A dihydrate of calcium hypochlorite of a prismatic crystal shape in which the lengths of axes a, b and c thereof are in the ratios satisfying the following formulas (1), (2) and (3): ...
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4179493 |
Dehydration process
Disclosed is a process for the production of partially dehydrated or anhydrous salts from higher hydrates of the same salt, utilizing solar energy. Hydrated salts which have an increasing...
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