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Class Information
Number: 23/298
Name: Chemistry: physical processes > Physical processes > Crystallization > Selective > From natural sources
Description: Processes wherein the system being crystallized is found in nature, i.e., naturally occurring brines containing a number of salts.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7611208 |
Methods for constructing underground borehole configurations and related solution mining methods |
Nov. 3, 2009 |
| 7507388 |
Process for production of dense soda, light soda, sodium bicarbonate and sodium silicate from solutions containing bicarbonate |
Mar. 24, 2009 |
| 6547836 |
Process for obtaining monohydrated lithium sulfate from natural brines |
Apr. 15, 2003 |
| 6500216 |
Method and apparatus for desalinating sea water, natural salt and fresh water |
Dec. 31, 2002 |
| 6464736 |
Recrystallization process |
Oct. 15, 2002 |
| 6267789 |
Method for enriching raw salt |
Jul. 31, 2001 |
| 6022385 |
Process for the manufacture of sodium carbonate crystals from minerals or solutions |
Feb. 8, 2000 |
| 5871551 |
Process for the preparation of anhydrous sodium sulfate |
Feb. 16, 1999 |
| 5503641 |
Process and apparatus for preparing a potassium chloride mixture |
Apr. 2, 1996 |
| 5329014 |
Method for recovering optically active tryptophan |
Jul. 12, 1994 |
| 5126019 |
Purification of chlor-alkali membrane cell brine |
Jun. 30, 1992 |
| 5084260 |
Method for producing pure boric acid |
Jan. 28, 1992 |
| 5028302 |
Purification of chlor-alkali membrane cell brine |
Jul. 2, 1991 |
| 4723962 |
Process for recovering lithium from salt brines |
Feb. 9, 1988 |
| 4603033 |
Salt harvester for harvesting salt in elongated solar salt crystallizer |
Jul. 29, 1986 |
| 4564508 |
Process for the recovery of sodium carbonate from salt mixtures |
Jan. 14, 1986 |
| 4562058 |
Process for crystallizing potassium sulfate |
Dec. 31, 1985 |
| 4533536 |
Process for the manufacture of potassium sulphate by treating solutions containing magnesium chloride and potassium chloride |
Aug. 6, 1985 |
| 4533360 |
Method of obtaining magnesium sulphate from mixtures of salts |
Aug. 6, 1985 |
| 4396591 |
Recovery of hydrogen iodide |
Aug. 2, 1983 |
| 4386936 |
Production of potassium chloride using pond crystallization |
Jun. 7, 1983 |
| 4306880 |
Recovering by-products from sea water brines and the like |
Dec. 22, 1981 |
| 4287163 |
Process for recovering lithium from brine by salting out lithium sulfate monohydrate |
Sep. 1, 1981 |
| 4286967 |
Double crystallization process to produce low organic, low silica soda ash |
Sep. 1, 1981 |
| 4271131 |
Production of highly pure lithium chloride from impure brines |
Jun. 2, 1981 |
| 4261960 |
Removal of boron from lithium chloride brine |
Apr. 14, 1981 |
| 4211613 |
Geothermal mineral extraction system |
Jul. 8, 1980 |
| 4088451 |
Concentration of underground brines in situ by solar evaporation |
May. 9, 1978 |
| 4072472 |
Production of high purity salt from high sulfate salt deposits |
Feb. 7, 1978 |
| 4064295 |
Spraying atomized particles |
Dec. 20, 1977 |
| 4026676 |
Process for producing salt having a reduced calcium sulfate content |
May. 31, 1977 |
| 3994531 |
Method of solution mining potassium chloride from subterranean deposits |
Nov. 30, 1976 |
| 3977835 |
Cooling process for selective salt crystallization |
Aug. 31, 1976 |
| 3967930 |
Separation of complex potassium salts from brine evaporites |
Jul. 6, 1976 |
| 3966539 |
Process for extracting dissolved salts from water |
Jun. 29, 1976 |
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