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Class Information
Number: 23/302R
Name: Chemistry: physical processes > Physical processes > Crystallization > Alkali metal and ammonium compounds
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7303593 |
Method to blend separator powders |
Dec. 4, 2007 |
| 7014832 |
Simultaneous recovery of potassium chloride and KCL enriched edible salt |
Mar. 21, 2006 |
| 6986878 |
Method of producing potassium sulfate via cation exchange |
Jan. 17, 2006 |
| 6890509 |
Process for recovery of low sodium salt from bittern |
May. 10, 2005 |
| 6884269 |
Continuous method for manufacture of uniform size flake or powder |
Apr. 26, 2005 |
| 6846417 |
Co-retarding agents for preparing purified brine |
Jan. 25, 2005 |
| 6660049 |
Process for control of crystallization of inorganics from aqueous solutions |
Dec. 9, 2003 |
| 6547836 |
Process for obtaining monohydrated lithium sulfate from natural brines |
Apr. 15, 2003 |
| 6464736 |
Recrystallization process |
Oct. 15, 2002 |
| 6340373 |
Process for recovering and treating of aqueous solutions |
Jan. 22, 2002 |
| 6334878 |
Apparatus and method for crystallization |
Jan. 1, 2002 |
| 6143271 |
Process for producing potassium sulfate from potash and sodium sulfate |
Nov. 7, 2000 |
| 6126702 |
Apparatus and method for treating sesquisulfate waste streams |
Oct. 3, 2000 |
| 6099595 |
Process for the preparation of crystalline sodium silicates |
Aug. 8, 2000 |
| 6036733 |
Process for the preparation of crystalline sodium silicates |
Mar. 14, 2000 |
| 5993759 |
Production of lithium carbonate from brines |
Nov. 30, 1999 |
| 5906660 |
Process for the manufacture of persalt particles |
May. 25, 1999 |
| 5895523 |
Process for making basic alkali metal sulfate pigments |
Apr. 20, 1999 |
| 5871571 |
Inks and UV-opaque protectorants comprising basic sodium and/or sodium/potassium aluminum sulfates and process for making such commercial products |
Feb. 16, 1999 |
| 5871551 |
Process for the preparation of anhydrous sodium sulfate |
Feb. 16, 1999 |
| 5846501 |
Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate |
Dec. 8, 1998 |
| 5840085 |
Process for removing sodium chloride and potassium salts from ash collected from a soda recovery boiler |
Nov. 24, 1998 |
| 5769906 |
Process for recovering the salt constituents from hardening-shop salt baths |
Jun. 23, 1998 |
| 5716419 |
Process for crystallization of mineral salts |
Feb. 10, 1998 |
| 5690701 |
Process for the manufacture of particles of coated persalts |
Nov. 25, 1997 |
| 5674617 |
Granulated alkali metal cyanide |
Oct. 7, 1997 |
| 5651796 |
Method for producing low bulk density hollow fine powder of alkali metal compound |
Jul. 29, 1997 |
| 5503641 |
Process and apparatus for preparing a potassium chloride mixture |
Apr. 2, 1996 |
| 5466266 |
Closed system multistage superpurification recrystallization |
Nov. 14, 1995 |
| 5449506 |
Process for producing potassium carbonate |
Sep. 12, 1995 |
| 5445805 |
Large potassium bicarbonate crystals and process for the preparation thereof |
Aug. 29, 1995 |
| 5382265 |
Perchlorate removal process |
Jan. 17, 1995 |
| 5330544 |
Process and apparatus for increasing the size of ammonium sulfate crystals |
Jul. 19, 1994 |
| 5300123 |
Method of reforming soluble salts to effect purification and increase crystal size thereof |
Apr. 5, 1994 |
| 5240467 |
Multistage countercurrent recrystallization process and apparatus for performing same |
Aug. 31, 1993 |
| 5211922 |
Process for the recovery of values from secondary aluminum dross |
May. 18, 1993 |
| 5198200 |
Process for the recovery of values from secondary aluminum dross |
Mar. 30, 1993 |
| 5126019 |
Purification of chlor-alkali membrane cell brine |
Jun. 30, 1992 |
| 5124265 |
Method and apparatus for crystallization process control |
Jun. 23, 1992 |
| 5123997 |
Plenum type crystal growth process |
Jun. 23, 1992 |
| 5122224 |
Direct flow crystal growth system |
Jun. 16, 1992 |
| 5085670 |
Production of potassium chloride crystals |
Feb. 4, 1992 |
| 5068092 |
Crystallizer, process and apparatus for producing sodium chloride crystals |
Nov. 26, 1991 |
| 5006199 |
Process for preparing single crystal of potassium titanium arsenate |
Apr. 9, 1991 |
| 4975200 |
Potassium fluoride removal from potassium chloride |
Dec. 4, 1990 |
| 4915705 |
Production of silica and fluorine-containing coproducts from fluosilicic acid |
Apr. 10, 1990 |
| 4902301 |
Process for shipment of sodium cyanide slurries |
Feb. 20, 1990 |
| 4844880 |
Process for the manufacture of sodium metabisulfite |
Jul. 4, 1989 |
| 4776930 |
Process for the preparation of potassium nitrate |
Oct. 11, 1988 |
| 4775546 |
Process for treating potassium chloride |
Oct. 4, 1988 |
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