| Patents for C01D 1 - Oxides or hydroxides of sodium, potassium, or alkali metals in general (1,372) |
|---|
| 06/22/1989 | DE3834320A1 Process, equipment and means for concentrating aggressive solutions |
| 06/06/1989 | US4837002 Removal of chlorate from caustic soda |
| 05/17/1989 | CN1032924A Method for production of caustic soda |
| 05/16/1989 | US4830707 Method and apparatus for preparing high-concentration alkali |
| 03/29/1989 | CN1031982A Process for producing caustic soda |
| 11/09/1988 | CN88103072A Process for producing sodium hydroxide by sodium sulfate |
| 10/19/1988 | CN87103073A Method for producing sodium hydroxide |
| 09/28/1988 | EP0219493B1 Method and apparatus for preparing high-concentration alkali |
| 08/23/1988 | CA1241131A1 Process for separating salts in aqueous streams |
| 08/09/1988 | US4762590 Causticizing process |
| 07/27/1988 | EP0275688A1 Process for manufacture of metal oxide |
| 07/27/1988 | CN87100309A Preparation method of caustic soda from sodium bicarbonate |
| 05/05/1988 | WO1988003191A1 Method and apparatus for combustion of soda black liquor |
| 05/04/1988 | CN85107664B Method of recovering chemicals from spent pulp liquors |
| 04/26/1988 | US4740445 Complexing metal compounds with pyridine or quinoline ring having amine salt function |
| 04/26/1988 | US4740363 Reacting a complexing agent with a water soluble metal compound |
| 04/19/1988 | US4738835 Gasification, rapid cooling by contact with recirculated solid particles separated from gas |
| 03/30/1988 | EP0261116A1 Method of recovering alkaline chemicals from flue gases containing alkaline metal vapor. |
| 03/02/1988 | EP0258196A1 A process for the preparation of sulphide-free alkali liquor |
| 02/10/1988 | CN86104945A Production method of hydroxides, thiosulfates, sulfates and sulfur |
| 11/11/1987 | EP0245148A1 Plant for transforming sodium into aqueous soda |
| 09/09/1987 | EP0134208B1 Purification of alkali metal hydroxides |
| 09/08/1987 | US4692209 Recovery of chemicals from pulp waste liquor |
| 08/25/1987 | CA1226081A1 Method and apparatus for reducing the aluminum content of alkaline solutions |
| 06/30/1987 | US4676971 Method for removing chlorate from alkali metal hydroxide |
| 06/11/1987 | DE3543379A1 Process for the electrolytic production of alkali metal hydroxide, chlorine and hydrogen |
| 06/09/1987 | CA1222605A1 Recovery of chemicals from pulp waste liquor |
| 06/04/1987 | WO1987003314A1 A process for causticizing of an aqueous solution containing alkali carbonate |
| 04/29/1987 | EP0219493A1 Method and apparatus for preparing high-concentration alkali. |
| 03/10/1987 | CA1218807A1 Causticizing process |
| 02/17/1987 | US4643846 Process for the treatment of radioactive sodium |
| 02/04/1987 | EP0210660A2 Image forming process |
| 02/04/1987 | EP0210659A2 Alkali generating process |
| 01/13/1987 | US4636289 Multicompartment, direct current |
| 12/30/1986 | US4632737 Adding bismuth compounds and reversing the current |
| 12/09/1986 | US4627888 Causticizing method |
| 12/04/1986 | WO1986007104A1 Method of recovering alkaline chemicals from flue gases containing alkaline metal vapor |
| 12/02/1986 | US4626426 Process for the manufacture of caustic soda |
| 11/19/1986 | CN85103946A Method and apparatus for preparing high-concentration alkali |
| 07/22/1986 | US4601786 Recovery of chemicals from pulp waste liquor with plasma generator heating |
| 07/17/1986 | EP0165945A4 Method of improving the purity of alkali-metal hydroxides. |
| 06/03/1986 | US4592817 Reacting a first acid salt with hydrogen enriched aqueous solution containing second acid; producing first acid and salt of second acid |
| 04/29/1986 | US4585579 Metal hydride |
| 04/10/1986 | CN85107664A Method of recovering chemicals from spent pulp liquors |
| 03/11/1986 | CA1201594A1 Enrichment process for molybdenum from molybdenum and alkaline carbonate, sulfate, hydroxide or hydrocarbonate and eventually uranium containing solutions |
| 03/11/1986 | CA1201592A1 Process for extraction arsenic from solutions containing alkaline carbonate, sulfate and eventually hydroxyde, and at least one metal of a group containing vanadium, uranium and molybdenum |
| 02/13/1986 | WO1986000876A1 Method and apparatus for preparing high-concentration alkali |
| 01/28/1986 | US4566912 Method of regenerating alkali-containing wash solutions utilized for cleaning containers |
| 01/21/1986 | US4565612 Double salts |
| 01/02/1986 | EP0165945A1 Method of improving the purity of alkali-metal hydroxides |
| 12/17/1985 | CA1197959A1 Device for feeding and spraying molten caustic soda |
| 10/01/1985 | CA1194274A1 Causticization method |
| 07/04/1985 | WO1985002834A1 Method of improving the purity of alkali-metal hydroxides |
| 07/02/1985 | US4526855 Reacting lithium nitride, lithium halide, to form pressed body, heating, annealing |
| 06/11/1985 | CA1188485A1 Alkali regeneration process |
| 05/07/1985 | CA1186489A1 Purification of alkali metal hydroxides |
| 04/10/1985 | EP0136692A2 Ion retardation process for separating salts in aqueous streams |
| 03/19/1985 | US4505885 Method of removing water from alkali metal hydroxide solutions |
| 01/22/1985 | US4495159 Extraction of arsenic in solution in liquors containing alkali metal carbonate, sulphate and possibly hydroxide, and at least one of the metals vanadium, uranium and molybdenum |
| 12/11/1984 | CA1179147A1 Process for the extraction of arsenic from solutions containing carbonates, sulfates, possibly an alcaline hydroxide and at least one of the metals vanadium, uranium and molybdenum |
| 12/04/1984 | US4486394 Agglomeration of fines with delignification liquid |
| 11/27/1984 | US4485075 Addition of lime |
| 11/06/1984 | CA1177223A1 Method of treating converted potassium sulfate for reducing a small amount of chlorine contained therein |
| 10/23/1984 | US4478722 Using ion retardation resin |
| 08/08/1984 | EP0114974A2 Process for decomposing sodium hydroxide containing multiple salts |
| 08/08/1984 | EP0114969A1 Process for reducing the aluminium content of alcaline solutions of an electrolyte of batteries having aluminium anodes |
| 08/02/1984 | WO1984002898A1 Purification of alkali metal hydroxides |
| 05/29/1984 | US4451443 Calcining limestone, alkali metal additives |
| 05/29/1984 | US4451439 Oxidant and catalyst |
| 04/24/1984 | US4444740 Method for the recovery of fluorides from spent aluminum potlining and the production of an environmentally safe waste residue |
| 03/27/1984 | US4439211 Suppression of food dusts and the like |
| 03/20/1984 | CA1163777A1 Preparation of white liquor |
| 02/28/1984 | CA1162720A1 Process for purifying solutions containing alkali carbonate and sulfate, eventually alkali hydroxide and at least one of vanadium, uranium or molybdenum metals |
| 02/21/1984 | US4432947 Process for obtaining molybdenum as a useful product from molybdeniferous solutions containing alkali metal carbonate, sulphate, hydroxide or hydrogen carbonate and possibly uranium |
| 12/27/1983 | US4423013 Process for the purification of solutions containing alkali metal carbonate, sulphate, hydroxide or possibly hydrogen carbonate, and one at least of the metals vanadium, uranium and molybdenum |
| 12/27/1983 | US4423009 Carbonate, sulphate and hydroxide or hydrogen carbonate |
| 12/20/1983 | US4421864 Improved ion exchange particle regeneration method |
| 12/13/1983 | US4420468 Pulverization, calcining |
| 12/06/1983 | CA1158019A1 Oxidation of organics in aqueous salt solutions |
| 11/30/1983 | EP0095145A2 Apparatus for delivering and spraying a caustic soda solution |
| 11/22/1983 | CA1157232A1 Process for the production of hydrogen |
| 10/13/1983 | WO1983003407A1 Alkali regeneration process |
| 10/05/1983 | EP0090568A1 Improved alkali regeneration process |
| 09/27/1983 | CA1154234A1 Process for purifying solutions containing alkaline carbonates, sulfates, hydroxides or eventually hydrogen carbonates, and at least one of vanadium, uranium or molybdenum metals |
| 05/31/1983 | US4386020 Galvanic cells |
| 05/24/1983 | CA1146892A1 Recovery of alkali metal constituents from coal conversion residues |
| 05/17/1983 | US4383887 Using the falling-film principle |
| 03/15/1983 | CA1142961A1 Inert organic solvent dispersion of alkali hydroxide and reaction using the same |
| 03/15/1983 | CA1142713A1 Accelerated process for causticization of kraft green liquor |
| 02/08/1983 | US4372924 Purification of alkali metal hydroxides |
| 12/28/1982 | US4366130 Process for removing residual hydrazine from caustic solutions |
| 11/09/1982 | US4358625 Method for the production of high-purity ethylene glycols |
| 11/02/1982 | US4357206 Process and apparatus for the concentration of an alkaline solution |
| 10/28/1982 | WO1982003620A1 Method for extracting arsenic from solutions containing alcaline carbonates, sulphate, optionally hydroxide, as well as at least one of vanadium, uranium and molybdenum metals |
| 10/26/1982 | US4356163 Reacting an alkali metal and h2o followed by sequentially producing the oxide, peroxide, carbonate and metal; circulation |
| 06/15/1982 | US4334949 Ion exchanging with strongly basic ion exchange resin |
| 06/08/1982 | US4333913 Alkali metal hydroxides, reacting peroxide with mercury polysulfide to precipitate mercury oxide |
| 06/02/1982 | EP0052795A2 Process for reducing the concentration of carbonate in an aqueous solution and process for etching |
| 03/10/1982 | EP0046829A1 Recovery of alkali metal constituents from coal conversion residues |
| 01/20/1982 | EP0043871A1 Method for removing chlorate from caustic solutions with electrolytically deposited iron and process for recovering said iron from said purified solutions |