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| Number | Title | Issue Date |
| 6475457 | Process for manufacturing potassium nitrate fertilizer and other metal nitrates A process for producing potassium nitrate and other metal nitrates from the chlorides, sulfates, oxides of these metals. The process uses nitrogen dioxide as a true fluidizing medium in shallow beds of the aforementioned solids at moderately elevated temp... | 11/05/2002 |
| 6175051 | Deactivation of metal liquid coolants used in nuclear reactor systems Liquid metal coolants, such as alkali metal used in nuclear reactor systems can be safely deactivated to form a disposable solid waste material. The alkali metal is dissolved in an ammoniacal liquid, such as anhydrous liquid ammonia to form a reaction mix... | 01/16/2001 |
| 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 |
| 5846501 | Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate In order to recover in an environmentally sound and economic manner used hardening shop salts which contain nitrate-nitrite, the salts, comminuted to particle sizes of from 1 to 50 mm, are dissolved in a mixture of nitric acid and hydrogen peroxide withou... | 12/08/1998 |
| 5810020 | Process for removing nitrogen-containing anions and tobacco-specific nitrosamines from tobacco products There is disclosed a process for denitrifying tobacco materials and removing barium from tobacco materials, comprising mixing an aqueous-immiscible organic solvent containing a crown ether with an aqueous solution containing soluble components from tobacc... | 09/22/1998 |
| 5466798 | Synthesis of lithium aminoborohydrides and reactions thereof The present invention relates to novel, powerful reducing agents, lithium aminoborohydrides which are prepared by addition of BH3 .cndot.THF to the corresponding dialkylamine at 25° C. to give the intermediate amineborane complex. Subsequent d... | 11/14/1995 |
| 5275794 | Process for producing sodium bicarbonate from natural soda salts Production of sodium bicarbonate from natural soda deposits that may occur as natural brines or solid soda salts is disclosed. The alkalinity in these natural soda deposits consists of carbonates and bicarbonates. The carbonates are converted to bicarbona... | 01/04/1994 |
| 5270023 | Process for producing sodium carbonate, sodium bicarbonate and associated compounds A process for producing sodium carbonate from a variety of crude ores and brine containing sodium bicarbonate and sodium carbonate without the use of calcium carbonate. The process includes the steps of reacting the raw materials containing sodium bicarbo... | 12/14/1993 |
| 5110578 | Continuous production of potassium nitrate via ion exchange Potassium nitrate is produced by contacting nitric acid with a potassium loaded strong cationic exchange resin. In a preferred embodiment, a solution of potassium nitrate and dilute nitric acid is produced in a continuous liquid solid contacting apparatus... | 05/05/1992 |
| 4668495 | Process for obtaining potassium nitrate from potassium chloride and nitric acid The present invention provides a process for manufacture of potassium nitrate from potassium chloride and nitric acid. A source of potassium chloride may be screened and separated into fine and coarse fractions, or the screening may be eliminated and the ... | 05/26/1987 |
| 4465568 | Electrochemical production of KNO3 /NaNO3 salt mixture A process for the electrolytic production of a chloride-free mixture consisting essentially of sodium and potassium nitrates is disclosed. In this process, an anolyte brine comprised of a mixture of sodium and potassium chlorides dissolved therein is elec... | 08/14/1984 |
| 4246019 | Method of producing a complex mineral fertilizer A method of producing a complex mineral fertilizer is disclosed, comprising the steps of decomposing polyhalite at a temperature not exceeding 110° C. in the presence of dilute nitric acid, neutralizing the obtained suspension with a substance selected f... | 01/20/1981 |
| 4187280 | Process for recovering useable products from by-product ammonium nitrate formed in the manufacture of nuclear reactor fuels or breeder materials Radiation-contaminated ammonium nitrate is heated in solution to about 100° C. in the presence of finely powdered calcium oxide or lithium hydroxide. Ammonia and water vapor are given off leaving an alkaline or alkaline earth nitrate which can then be sa... | 02/05/1980 |
| 4133671 | Method and apparatus for enhancing fertilizing characteristics of irrigation water A method and apparatus for enhancing fertilizing characteristics of irrigation water by adding carbon dioxide and nitrogenous compounds, derived from exhaust gases, to irrigation water so as to produce a fertilizing solution which promotes crop growth. Th... | 01/09/1979 |
| 4131117 | Method for removal of potassium nitrate from tobacco extracts This disclosure relates to a process for selectively removing and recovering potassium nitrate in a relatively pure state from tobacco, and especially from Burley tobacco stems. The process comprises the steps of (1) contacting tobacco plant parts with wa... | 12/26/1978 |
| 4123350 | Process for desulfurization of residua with sodamide-hydrogen and regeneration of sodamide Sulfur-containing petroleum oil feedstocks which include heavy hydrocarbon constituents undergo simultaneous desulfurization and hydroconversion by contacting and reacting such feedstocks with sodamide in the presence of hydrogen and at elevated temperatu... | 10/31/1978 |
| 4120779 | Process for desulfurization of residua with sodamide-hydrogen and regeneration of sodamide Sulfur-containing petroleum oil feedstocks which include heavy hydrocarbon constituents undergo simultaneous desulfurization and hydroconversion by contacting and reacting such feedstocks with sodamide in the presence of hydrogen and at elevated temperatu... | 10/17/1978 |
| 4072501 | Method of producing homogeneous mixed metal oxides and metal-metal oxide mixtures Metal powders, metal oxide powders, and mixtures thereof of controlled particle size are provided by reacting an aqueous solution containing dissolved metal values with excess urea. Upon heating, urea reacts with water from the solution leaving a molten u... | 02/07/1978 |
| 4038321 | Process for production of unsymmetrical dimethylhydrazine by nitrosation of dimethylamine and hydrogenation of the nitroso dimethylamine to the distillation of unsymmetrical dimethylhydrazine A process for production of unsymmetrical dimethylhydrazine from nitroso dimethylamine that is characterized as a completely closed system with respect to positive prevention of environmental contamination by waste nitrosodimethylamine. This process furth... | 07/26/1977 |
| 3983222 | Removing nitrates with an organic amine salt and ion exchange A continuous process for removing nitrates from nitrate containing aqueous solutions having a pH of about 0-7, which comprises: (1) extracting the nitrate containing aqueous solution with an organic amine salt dissolved in an organic solvent phase whereby... | 09/28/1976 |
