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6776972 |
A new process for recovery of common salt, potassium chloride, concentrated magnesium chloride with enriched bromide, and high purity magnesia from brine in an integrated manner, said process comprises preparation of calcium chloride by ...
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6547836 |
A process for obtaining monochlorated lithium sulfate from natural brines by mixing two brines: one saturated or nearly saturated with silvite (KCl), carnallite (KCl, MgCl 2 .6H 2 O), and lithium sulfate (Li 2 SO 4 .H 2 O), with a magnes...
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5447543 |
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 polythermic concave solubility curves. Each ...
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5128115 |
A method is described for producing silicon carbide particles using solar energy. The method is efficient and avoids the need for use of electrical energy to heat the reactants. Finely divided silica and carbon are admixed and placed in ...
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4723962 |
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 brine, so as to precipitate lithium sulfa...
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4690797 |
A method for the manufacture of large area silicon crystal bodies suitable for use in the manufacture of solar cells wherein silicon powder having a small grain size is used as the starting material. This powder is compressed to form a t...
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4603033 |
An improved harvester for harvesting a salt crop from the bottom of a shallow, elongated solar crystallizer containing a substantially saturated salt solution overlying the salt crop. The harvester includes track means extending longitud...
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4569676 |
Brine containing at least two salts, one or more of the salts having a higher hydrated form and a lower hydrated or anhydrous form, is fed to a non-convective solar pond and one of the salts having a higher hydrated form and a lower hydr...
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4564367 |
A solar crystallizer and a process for producing solar salt adaptable for use in climates heretofore believed unfavorable for solar salt production. The invention employs a solar crystallizer defining a shallow pond of salt solution the ...
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4488958 |
Partially purified salt containing less than about 00.4 weight percent insolubles is further purified to reduce the insolubles until the milk pad rating is 3 or better for certain industrial uses and 1 for human consumption. The entry sa...
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4386936 |
Disclosed is a method of increasing and maintaining high concentrations of potassium chloride in a refinery process stream of brine containing potassium chloride, sodium chloride and a minor amount of salt impurities by mixing with a fir...
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4333736 |
A method of changing the salt content of a solution is described by including the salt in a nonconvective solar pond heated by solar radiation and having stable salt-concentration and temperature gradients increasing from the top to the ...
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4306880 |
The improved production of sodium sulfate, potassium sulfate and other valuable salts from salt plant bitterns or the like wherein initial reduction in sulfate ion concentration yields salt cake and greatly facilitates the selective reco...
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4287163 |
A salting-out process for recovering lithium from brines which have been concentrated by solar or thermal evaporation. Soluble sulfate salts are added to the strong brine solutions containing lithium to yield lithium sulfate monohydrate....
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4243392 |
By evaporation employing solar energy, a brine having a lithium chloride concentration greater than that of a brine whose vapor pressure under ambient conditions is substantially equal to the partial pressure of moisture in the atmospher...
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4179493 |
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 solubility with an increase of temperature, posse...
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4088451 |
A process is provided for the recovery of chemicals, such as chlorides, sulfates, carbonates and borates of such alkali metals as sodium and potassium, among others, from underground brines associated with an ore body containing said che...
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4072472 |
A subterranean salt deposit is solution mined, and the resulting calcium- and sulfate-contaminated brine is treated, e.g., by soda ash, to precipitate insoluble calcium compounds. The resulting slurry is settled, and the effluent clear b...
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3966541 |
A process is provided for the recovery of chemicals, such as chlorides, sulfates, carbonates and borates of such alkali metals as sodium and potassium, among others, from underground brines associated with an ore body containing said che...
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3852044 |
Aqueous solutions containing magnesium chloride as the major dissolved salt but contaminated with sulfate, potassium and sodium to the extent that magnesium chloride produced by evaporating the solution is unacceptably contaminated with ...
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3747907 |
A cooling water storage system includes two water storage ponds, one pond being located at a higher elevation than the other. The water temperature in the lower pond is reduced by flowing the water from the high pond to the low pond duri...
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3615259 |
A solar evaporation zone receives a brine of a given concentration with respect to a particular soluble salt and produces effluent brine of a higher concentration with respect to that salt. A crystal crop of other salts, characterized by...
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3386768 |
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3372691 |
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3099528 |
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3058729 |
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2813063 |
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2532924 |
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2447362 |
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2161800 |
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1907192 |
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1892760 |
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1886868 |
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1878586 |
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1593038 |
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1476873 |
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1417139 |
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1353283 |
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1328614 |
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1328418 |
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3833504 |
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3592615 |
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3589871 |
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0825953 |
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0681407 |
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