| Patents for B01D 11 - Solvent extraction (12,717) |
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| 10/13/1981 | US4294800 Liquid jet recycle reactor |
| 10/13/1981 | US4294695 Multi-phase separation methods and apparatus |
| 10/06/1981 | US4293387 Apparatus for the solvent extraction of aromatic hydrocarbons from a hydrocarbon mixture |
| 10/06/1981 | CA1110043A1 Contactor-separator units |
| 09/29/1981 | US4292277 Liquid-liquid contacting apparatus |
| 09/29/1981 | US4292089 Process for continuously dissolving a particulate solid material, notably a lignocellulose material |
| 09/23/1981 | EP0036401A1 A reagent and a method for the extraction of copper from an ammoniacal copper solution |
| 09/23/1981 | EP0036283A2 Method and apparatus for liquid-liquid extraction |
| 09/22/1981 | US4291007 Process for the separation of a strong mineral acid from an aqueous solution |
| 09/22/1981 | US4290998 Washing apparatus in chlorine dioxide production |
| 09/22/1981 | US4290882 Solvent extraction and electrowinning to recover metal values |
| 09/22/1981 | US4290880 Supercritical process for producing deasphalted demetallized and deresined oils |
| 09/22/1981 | CA1109324A1 Method for the selective extraction of caffeine from vegetable materials |
| 09/21/1981 | EP0028648A4 Method for recovering molybdenum from tungsten solutions. |
| 09/16/1981 | EP0035936A2 Method and apparatus to check the operation of a liquid-liquid extraction still |
| 09/15/1981 | US4289734 Apparatus for contacting solids with a liquid |
| 09/15/1981 | US4289579 Method for treating a bulk material with a fluid |
| 09/15/1981 | CA1108824A1 Liquid extraction process and apparatus for accomplishing the same |
| 09/08/1981 | US4288329 Method and apparatus for cleaning fine waste material mixed with oil and water |
| 09/01/1981 | CA1108320A1 Method of eliminating surfactant influence in liquid extraction systems |
| 09/01/1981 | CA1107975A1 Process for selective extraction of metal ions from aqueous solutions and extracting agents suitable for that purpose |
| 08/26/1981 | EP0034400A2 Amine separation process |
| 08/19/1981 | EP0033838A1 Process for recovering uranium from wet-process phosphoric acid |
| 08/18/1981 | US4284232 Liquid-liquid centrifugal contacting machines and methods of constructing and operating them |
| 08/11/1981 | US4283255 Distillation |
| 08/11/1981 | CA1106614A1 Process for the separation of gallium |
| 08/11/1981 | CA1106577A1 Apparatus for mixing or separating two non miscible liquids, particularly for liquid-liquid extraction |
| 08/04/1981 | US4282259 Using liquid carbon dioxide, heating, compressing; condensation, and recycling |
| 08/04/1981 | US4282188 Contacting with diester of pyrophosporic acid, extraction with alkaline solution, and precipitation |
| 08/04/1981 | US4282112 Ruthenium recovery process by solvent extraction |
| 08/04/1981 | US4282101 Filtering apparatus |
| 08/04/1981 | US4281605 Apparatus for regenerating fluidizing medium |
| 07/28/1981 | US4281171 Liquid carbon dioxide extraction of pyrethrins |
| 07/28/1981 | US4280961 Method of recovering and/or refining animal fats |
| 07/28/1981 | CA1105679A1 Process and apparatus for selective extraction of a soluble compound from a particulate material |
| 07/22/1981 | EP0032184A1 Process for recovering uranium or uranium compounds from phosphoric acid |
| 07/21/1981 | CA1105410A1 Method of obtaining copper from sulphurized concentrates |
| 07/21/1981 | CA1105264A1 Hydrometallurgical process for the treatment of ores |
| 07/15/1981 | EP0032070A1 Apparatus for treating compounds in a liquid |
| 07/14/1981 | US4278640 Bubbling air, flotation |
| 07/14/1981 | US4278012 Plant for the extraction of hops by extraction with liquid carbon dioxide |
| 07/08/1981 | EP0031460A2 Process for recovering uranium or its compounds from phosphoric acid |
| 07/07/1981 | US4277445 Multistage mixer-settler type where solid phase is formed |
| 07/07/1981 | CA1104350A1 Separation of cobalt and nickel by solvent extraction |
| 06/30/1981 | CA1104109A1 Extractant and process for extracting uranium wet- process phosphoric acid |
| 06/24/1981 | EP0030884A1 Apparatus for treating compounds in a liquid |
| 06/24/1981 | EP0030756A1 Process and plant for the production of a metal halogenide brine from a metal halogenide mass containing soluble impurities |
| 06/23/1981 | US4275234 Hydrocarbon solvent extraction |
| 06/23/1981 | US4275040 Process for extracting titanium values from titaniferous bearing material |
| 06/23/1981 | US4274956 Extraction process using solid stabilized emulsions |
| 06/23/1981 | US4274948 Separation of minerals |
| 06/23/1981 | US4274946 Solvent extraction with a fluorocarbon |
| 06/23/1981 | CA1103461A1 Process for recovering uranium from wet-process phosphoric acid |
| 06/16/1981 | CA1103227A1 Liquid membrane process for uranium recovery |
| 06/10/1981 | EP0030067A1 Process for the extraction of metal ions |
| 06/09/1981 | US4272490 Hydrometallurgical process for the treatment of ores |
| 06/09/1981 | US4272011 Centrifugal counterflow type contactor |
| 06/03/1981 | EP0029684A1 Method of producing a decaffeinated coffee product |
| 06/02/1981 | US4271128 Apparatus for recovering alcoholic phosphoric acid solutions from acid phosphates |
| 05/26/1981 | US4269676 Leaching using a solvent mixture of pyridine, a-, b-, or g-picoline or 2,6-lutidine and a chlorinated methane to form a soluble metal complex |
| 05/26/1981 | CA1101678A1 Separation and purification of ruthenium |
| 05/20/1981 | EP0028648A1 Method for recovering molybdenum from tungsten solutions. |
| 05/19/1981 | US4268484 Solvent extraction |
| 05/19/1981 | US4268395 Extraction by solid stabilized emulsions |
| 05/19/1981 | CA1101350A1 Solvent extraction process |
| 05/13/1981 | EP0028518A1 Process for the separation of endosperm from comminuted oat bran |
| 05/05/1981 | US4265860 High pressure Soxhlet extractor |
| 05/05/1981 | US4265737 Methods and apparatus for transporting and processing solids |
| 04/28/1981 | CA1100094A1 Recovery of dissolved species from aqueous solutions by a liquid membrane technique |
| 04/22/1981 | EP0027396A1 Apparatus for temperature or substance exchange between solid and liquid materials |
| 04/21/1981 | CA1099581A1 Continuous extraction process |
| 04/21/1981 | CA1099522A1 Method of recovering gallium from very basic solutions by liquid/liquid extraction |
| 04/14/1981 | US4261818 Method for making separations from aqueous solutions |
| 04/14/1981 | US4261553 Method for containing liquid phases in a vessel |
| 04/08/1981 | EP0026559A1 Liquid carbon dioxide extraction of pyrethrins and a purified pyrethrin composition |
| 04/08/1981 | EP0026502A1 Process for treating an organic phase containing ferric chloride, molybdenum chloride and hydrochloric acid |
| 04/07/1981 | US4260639 Treatment with moist carbon dioxide |
| 04/07/1981 | US4260586 Apparatus for contacting liquids |
| 04/07/1981 | US4260489 Treatment of oily sludge |
| 04/07/1981 | CA1098861A1 Method of obtaining copper from copper-bearing ores |
| 03/25/1981 | EP0025432A1 Method and apparatus for the recovery of solvent from a solution, in particular an extract, and for storing the recovered solvent |
| 03/24/1981 | US4258011 Vegetable oil extraction apparatus |
| 03/24/1981 | US4258010 Solvent extraction apparatus |
| 03/24/1981 | US4257945 Method of high-speed in particular batch production of aromatic essential oils from perfume-generating plants or from parts thereof such for instance as seeds, bulbs, flowers as well as a device for carrying out this method |
| 03/24/1981 | CA1097925A1 Method for the recovery of actinide elements from nuclear reactor waste |
| 03/24/1981 | CA1097924A1 Method for recovering palladium and technetium values from nuclear fuel reprocessing waste solutions |
| 03/10/1981 | US4255461 Preparation of a decaffeinated roasted coffee blend |
| 03/10/1981 | US4255458 Solvent and a gaseous component |
| 03/10/1981 | US4255410 Centrifugal force |
| 03/10/1981 | US4255394 Process for the separating of rare earths |
| 03/10/1981 | CA1097028A1 Crud handling circuit |
| 02/25/1981 | EP0024097A1 Apparatus and process for treating a fluid material while it is subjected to a centrifugal force |
| 02/24/1981 | US4252189 Vibratory method for minimg shale oil or the like |
| 02/24/1981 | CA1096358A1 O- hydroxyaryloxime - alkylphenol composition and use thereof for extracting copper |
| 02/18/1981 | EP0024063A1 Process for separating trivalent iron from an aqueous chloride solution |
| 02/17/1981 | US4251559 With supercritical carbon dioxide |
| 02/17/1981 | CA1095731A1 Stripping of cobalt from nickel-cobalt loaded organic |
| 02/11/1981 | EP0023745A2 Process and apparatus for effecting mass transfer |
| 02/11/1981 | EP0023680A1 Process for the production of spice extracts |
| 02/10/1981 | US4250331 Reacting carbon dioxide under heat and pressure; extraction; depressurizing |