| Patents for B03D 1 - Flotation (8,101) |
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| 09/26/1990 | EP0389275A1 Skimming apparatus |
| 09/26/1990 | EP0388487A1 Process and installation to remove pollutants from contaminated soil |
| 09/25/1990 | US4959183 Aeration apparatus |
| 09/22/1990 | CA2012734A1 Liquid skimming apparatus |
| 09/19/1990 | EP0388066A1 Dispersed air flotation apparatus and method |
| 09/12/1990 | CN1009530B Flotation method for zirconite |
| 09/11/1990 | US4956124 Bicyclic decanedioic acids, a process for their production, and their use as flotation aids |
| 09/11/1990 | US4956077 Froth flotation of mineral fines |
| 09/11/1990 | CA1274024A1 Process for the flotation of ores |
| 09/11/1990 | CA1273927A1 Amphoteric compound and use thereof |
| 08/29/1990 | CN1009345B Process for froth-flotation of phosphate mineral and reagent intended for use in the process |
| 08/28/1990 | US4952329 Separation of polymetallic sulphides by froth flotation |
| 08/28/1990 | US4952308 Pressurized flotation module and method for pressurized foam separation |
| 08/28/1990 | US4952307 Recovery of elemental sulphur from products containing contaminated elemental sulphur by froth flotation |
| 08/22/1990 | CN1009253B Using mixed collector as flotation agent of non-sulfidic ores, particularly of cassiterite |
| 08/22/1990 | CN1009252B Floatation of antimony sulfide ore in slightly acidic medium |
| 08/21/1990 | US4950390 Apparatus and method for froth flotation |
| 08/21/1990 | CA1273024A1 Process and compound for the froth flotation beneficiation of iron minerals from iron ores |
| 08/08/1990 | EP0380528A1 Polysaccharides from the endosperm of seeds of prosopis juliflora, process for extracting them, and their use |
| 08/07/1990 | US4946597 Low temperature bitumen recovery process |
| 08/07/1990 | US4946585 Using mercaptobenzothiazole |
| 08/02/1990 | DE3902665A1 Process for upgrading inorganic nonmetallic fibres, in particular ceramic fibres, and also an apparatus for carrying out this process |
| 07/18/1990 | EP0378128A2 Method for the selective flotation of phosphate ores |
| 07/13/1990 | CA2007637A1 Process for the selective flotation of phosphorus minerals |
| 07/11/1990 | EP0376971A1 Process and installation for recovering reusable gas from waste through pyrolysis. |
| 07/10/1990 | US4940534 Froth flotation column |
| 07/04/1990 | EP0375739A1 Water clarification system adapted for removing particulate matter of greater than a predetermined size. |
| 07/03/1990 | US4938865 Column flotation method and apparatus |
| 07/03/1990 | CA1271273A1 Collectors for froth flotation of minerals |
| 07/03/1990 | CA1271272A1 Method for the production of potassium chloride with a k.sub.2o content of more than 55 wt. from the fine salt resulting from the decomposition of carnallite |
| 06/28/1990 | EP0370026A4 Liquid separator. |
| 06/28/1990 | EP0365537A4 Liquid separator. |
| 06/27/1990 | EP0374223A1 Method and apparatus for removing liquid from suspensions |
| 06/19/1990 | US4935148 Process for microaquaculture and pollution control |
| 06/13/1990 | EP0372057A1 Depressant for flotation separation of polymetallic sulphidic ores |
| 06/06/1990 | CN2057868U Wasted paper floatation ink-elimiating machine |
| 06/05/1990 | US4931175 Water clarifying apparatus |
| 06/05/1990 | CA1270076A1 Collectors for the selective froth flotation of mineral sulfides |
| 06/05/1990 | CA1270075A1 Frother composition and a froth flotation process for the recovery of coal values from a raw coal |
| 06/05/1990 | CA1270074A1 Frothers demonstrating enhanced recovery of coarse particles in froth flotation |
| 05/30/1990 | EP0370026A1 Liquid separator. |
| 05/29/1990 | US4929393 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides |
| 05/29/1990 | US4929344 Metals recovery by flotation |
| 05/29/1990 | US4929343 Froth flotation |
| 05/29/1990 | CA1269766A1 Flotation separating system |
| 05/23/1990 | EP0369015A1 Flotation machine |
| 05/23/1990 | DE3839371A1 Flotation device |
| 05/16/1990 | EP0368061A1 Surface-active derivatives of fatty-acid esters and/or fatty acids as collectors in the flotation of non-sulfidic ores |
| 05/16/1990 | CN2057115U Drug supply machine |
| 05/15/1990 | US4925575 System for separating phases of a liquid stream |
| 05/15/1990 | US4925559 Use of derivatives of tricyclo-(5.2.1.02,6)-dec-3-ene as frothers in the flotation of coal and ores |
| 05/10/1990 | DE3842851A1 Process and apparatus for treating fly ashes by floatation |
| 05/08/1990 | US4923600 Water clarification system adapted for removing particulate matter of greater than a predetermined size |
| 05/08/1990 | US4923125 Process for treating contaminated soil |
| 05/03/1990 | WO1990004459A1 Surface-active fatty acid ester and/or fatty acid derivatives as collectors in the flotation of non-sulphidic ores |
| 05/02/1990 | EP0365537A1 Liquid separator |
| 05/02/1990 | CN1041712A Centrifugal water-wheel machine for releasing dissolved gas |
| 05/01/1990 | CA1268565A1 Collector compositions for the froth flotation of mineral values |
| 05/01/1990 | CA1268564A1 Process to recover lead compounds |
| 04/30/1990 | CA2001432A1 Process for recovering gold from refractory sulfidic ores |
| 04/29/1990 | CA2001736A1 Surface-active fatty acid ester derivatives and/or fatty acid derivatives as collecting agent in the flotation of non-sulfide ores |
| 04/25/1990 | EP0364654A2 Method and apparatus for generating microbubbles in froth flotation mineral concentration systems |
| 04/25/1990 | CN1007705B Complexing agent for floating copper ore |
| 04/17/1990 | US4917775 Method for measuring and adjusting electrochemical potential and/or component content in the process of treating valuable materials |
| 04/17/1990 | CA1267979A1 Collector composition for froth flotation |
| 04/10/1990 | US4915825 Process for coal flotation using 4-methyl cyclohexane methanol frothers |
| 04/10/1990 | US4915706 Dewatering, removing fine particle of pyritic sulfur; prepared slurry has selected size distribution |
| 04/05/1990 | DE3833054A1 Verfahren zur aufbereitung von teichschlamm (flotationsabgaengen) und aufbereitungsanlage Process for the preparation of pond sludge (flotation tailings) and treatment plant |
| 04/03/1990 | US4913805 Apparatus and method for froth flotation |
| 03/27/1990 | US4911826 Sparging system for column flotation |
| 03/21/1990 | CN1040520A Technology for decarbonizing wet clarifying dregs of f-bearing smoke |
| 03/13/1990 | US4908125 Froth flotation process for the recovery of minerals and a collector composition for use therein |
| 02/28/1990 | EP0355386A2 Fly ash beneficiation process |
| 02/28/1990 | CN2053541U Depth trough type inflating mechanical agitation style floatation machine |
| 02/28/1990 | CN1039977A Floating selection for separating mixed salt |
| 02/27/1990 | US4904375 Sodium silicate as a phosphate flotation modifier |
| 02/27/1990 | US4904374 Froth flotation |
| 02/27/1990 | US4904373 Fossil resin flotation from coal by selective coagulation and depression of coal |
| 02/21/1990 | CN1006900B Method of separating carbonaceous components from particulate coal containing inoganic solids and apparatus therefor |
| 02/20/1990 | US4902765 Allyl thiourea polymers |
| 02/20/1990 | US4902764 Polymeric sulfide mineral depressants |
| 02/13/1990 | US4900452 Separation process for a liquid phase dispersed in a continuous liquid phase |
| 02/13/1990 | US4900431 Process for upgrading andalusite |
| 02/13/1990 | CA1265877A1 Collectors for the froth flotation of mineral values |
| 02/13/1990 | CA1265876A1 Method of recovering copper and zinc concentrates from complex sulfide ores by differential flotation |
| 02/07/1990 | CN1006689B Recovery of usable mineral from ore by foaming agent composite and foaming flotation |
| 02/06/1990 | CA1265471A1 Electrode with reversible polarity |
| 01/30/1990 | CA1265265A1 Frother composition and a froth flotation process for the recovery of mineral |
| 01/30/1990 | CA1265264A1 Particle separation |
| 01/30/1990 | CA1265263A1 Modified alcohol frothers for froth floation of sulfide ore |
| 01/25/1990 | WO1990000645A1 Method and apparatus for the removal of light material from a fiber suspension |
| 01/24/1990 | CN1039007A Improved apparatus for thickening by flotation of sluries produced during treatment of waters |
| 01/24/1990 | CN1038950A 浮选机 Flotation machine |
| 01/24/1990 | CN1038949A Density separation of aflatoxin-contaminated grain or nuts |
| 01/18/1990 | DE3823847A1 A process for de-inking printed waste paper |
| 01/10/1990 | EP0349806A2 Apparatus for treating waste paper |
| 01/09/1990 | US4892649 Calcium carbonate beneficiation |
| 01/09/1990 | US4892648 Amine, carbon dioxide, froth flotation |
| 12/26/1989 | US4889638 Agitation and/or gas separation and dispersed gas flotation |
| 12/20/1989 | CN2049558U Placer flotation machine |