| Patents for B03D 1 - Flotation (8,101) |
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| 12/19/1989 | US4888106 Method of using polymeric sulfide mineral depressants |
| 12/12/1989 | US4886595 Process of froth flotation using a methylene bisxanthate as a collector reagent |
| 12/12/1989 | EP0229835A4 Process for the selective separation of a copper molybdenum ore. |
| 12/06/1989 | EP0344553A1 Surfactant mixtures as collectors for the flotation of non-sulfidic minerals |
| 12/05/1989 | CA1263662A1 O,o'-, o,s'-or s,s'-dithiodialkylene-bis(mono- or dihydrocarbyl carbamothioates) and s,s'- dithiodialkylene-bis(mono- or dihydrocarbyl carbamodithioates) useful as froth flotation collectors |
| 11/28/1989 | US4883586 Process for beneficiating ores containing fine particles |
| 11/28/1989 | US4883585 Mineral collectores for copper, zinc, nickel and iron. |
| 11/22/1989 | CN1037285A Ore-dressing method to separate multi-metal complex minerals of cu, pb and zn |
| 11/21/1989 | US4882068 Tank with screen, bubbling |
| 11/16/1989 | WO1989010792A1 Separation of polymetallic sulphides by froth flotation |
| 11/16/1989 | WO1989010791A1 Depressant for flotation separation of polymetallic sulphidic ores |
| 11/16/1989 | WO1989010782A1 Method and apparatus for removing liquid from suspensions |
| 11/15/1989 | CN1037098A Chemical rule for utilizing the flotation technique to purify magnesite ore |
| 11/14/1989 | US4880529 Froth flotation |
| 11/08/1989 | EP0340391A2 1,4-Disubstituted-2,3,4,6-tetrahydroxy-1,4-diphosphorinane and their oxides or sulfides |
| 11/07/1989 | US4879022 Ore flotation process and use of mixed hydrocarbyl dithiophosphoric acids and salts thereof |
| 11/02/1989 | WO1989010202A1 Flotation apparatus |
| 11/02/1989 | WO1989010201A1 Flotation machine |
| 11/02/1989 | WO1989010200A1 Pyrite depressants useful in the separation of pyrite from coal |
| 11/02/1989 | WO1989010199A1 Pyrite depressants useful in the separation of pyrite from coal |
| 11/02/1989 | EP0339856A2 Pyrite depressants useful in the separation of pyrite from coal |
| 10/31/1989 | US4877518 Ore flotation employing dimercaptothiadiazoles |
| 10/31/1989 | US4877517 Using crosslinked starch, polyacrylate, and lignin sulfonate |
| 10/25/1989 | EP0338778A2 Pyrite depressants useful in the separation of pyrite from coal |
| 10/25/1989 | EP0338276A2 Copolymers of acrylamide with allylthioureas as sulfide mineral depressants |
| 10/18/1989 | CN1036342A Classification of hollow glass corpuscles from powder coal ash |
| 10/17/1989 | US4874534 Air bubbles bind drops and form froth on upper surface |
| 10/17/1989 | US4874357 Centrifugal flotation apparatus |
| 10/12/1989 | DE3907066A1 Process for decontaminating sludge-like sediments |
| 10/03/1989 | US4871466 Novel collectors and processes for making and using same |
| 10/03/1989 | US4871448 Mechanical flotation machine |
| 10/03/1989 | US4871447 From oil and gas residues |
| 09/27/1989 | EP0198073B1 Device for introducing a gas into a liquid |
| 09/26/1989 | CA1260632A1 Froth flotation of bastnaesite |
| 09/26/1989 | CA1260162A1 High molecular weight carboxylic acids as collectors of mineral values from carbonaceous ores |
| 09/21/1989 | DE3808154A1 Injector having bubble divider |
| 09/20/1989 | EP0332958A1 Process for the decontamination of sludge-like sediments |
| 09/19/1989 | US4867868 Conditioning pulp by mixing with humic acid and mineral acid to reduce ph and depress coal flotation |
| 09/19/1989 | US4867867 Recovery in the phosphate ore double flotation process |
| 09/13/1989 | CN1035448A Mineral separating technology for separating fcce ore and monazite with floatation |
| 09/12/1989 | US4866150 (meth)acrylamide-thiourea polymers |
| 09/06/1989 | CN1035274A Method for removal of organic solvents from aqueous process streams |
| 08/30/1989 | EP0203076B1 Separation and recovery of solids from liquids using the ionic flotation process |
| 08/29/1989 | US4861352 Vapor pressure differentials of components; stripping gas at supersonic velocity |
| 08/29/1989 | CA1258866A1 Phosphinic acid adducts with maleic acid semiesters, a process for their production and their use |
| 08/22/1989 | US4859318 Recovering coal fines |
| 08/16/1989 | CN1034683A Process for fine coal cleaning |
| 08/15/1989 | US4857221 Froth flotation using hydrophobic polyvinyl ether |
| 08/15/1989 | US4857179 Ore flotation and mineral flotation agents for use therein |
| 08/15/1989 | US4857174 Method of beneficiating phosphate ores |
| 08/15/1989 | CA1258542A1 Control of froth cell performance through the use of differential bubbler tubes |
| 08/10/1989 | WO1989007015A1 A process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles |
| 08/10/1989 | WO1989007014A1 Process for treating contaminated soil |
| 08/08/1989 | US4855507 1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides |
| 08/03/1989 | DE3801818A1 Process for disposing of floating-solid and/or settling-solid separators, and apparatus for this purpose |
| 08/02/1989 | EP0325976A2 Pneumatic flotation cell |
| 08/01/1989 | US4853114 Method for the depressing of hydrous, layered silicates |
| 08/01/1989 | US4853113 Froth Flotation of bastnaesite |
| 07/26/1989 | EP0324833A1 Process for beneficiation of sulfide ores by froth flotation |
| 07/25/1989 | US4851037 Collecting agents for the selective flotation of lead and zinc ores and a process for preparing the same |
| 07/25/1989 | US4851036 Mineral ore flotation process and apparatus |
| 07/25/1989 | CA1257935A1 Flotation mechanism |
| 07/13/1989 | WO1989006161A1 Method for removal of organic solvents from aqueous process streams |
| 07/12/1989 | EP0323646A2 Method of separating a higher vapor pressure component and/or particulate matter from a lower vapor pressure component |
| 07/11/1989 | CA1257409A1 Repeating flotation machine |
| 07/06/1989 | DE3744163A1 Method and plant for processing ore, coal or other minerals |
| 07/05/1989 | EP0323323A1 Andalusite beneficiation process |
| 07/04/1989 | US4844873 Separation and recovery of solids from liquids containing them using the ionic flotation process |
| 06/27/1989 | CA1256601A1 Method for recovering fine granulated coal by flotation |
| 06/20/1989 | US4840753 Device for aerating fluids, in particular during flotation |
| 06/15/1989 | DE3744794A1 Device for the continuous separation of particles from suspensions by flotation |
| 06/13/1989 | US4838434 Air sparged hydrocyclone flotation apparatus and methods for separating particles from a particulate suspension |
| 06/13/1989 | CA1255816A1 Device at flotation of fibre suspensions |
| 06/01/1989 | DE3737512C1 Continuous flotation process and appliance to carry it out |
| 05/31/1989 | EP0317639A1 Flotation collecter and process for treating aqueous inorganic substance system |
| 05/30/1989 | US4834872 Aeration/flotation reactor |
| 05/24/1989 | CN2038026U Rotar aeration floatation equipment |
| 05/24/1989 | CN1033016A Fiber optic detector for flotation cell processing |
| 05/23/1989 | CA1254695A1 Polymeric sulfide mineral depressants |
| 05/18/1989 | WO1989004213A1 Flotation depressants |
| 05/17/1989 | CN1032909A Method and apparatus for controlling flotation cell |
| 05/16/1989 | US4830740 Froth flotation in presence of salt of polymeric acid |
| 05/16/1989 | US4830739 Process and composition for the froth flotation beneficiation of iron minerals from iron ores |
| 05/16/1989 | US4830738 Separation of matter by floatation |
| 05/16/1989 | US4830737 Apparatus and method for controlling the flow of foam at low flow rates |
| 05/09/1989 | US4828687 Froth flotation process and collector therefor |
| 05/09/1989 | US4828686 Chemical conditioning of fine coal for improved flotation and pyrite rejection |
| 05/03/1989 | CN2036864U Ring type mechanical stirring flotation machine |
| 05/03/1989 | CN1032631A Method for the floatation of carbonate off fluorite ore |
| 05/03/1989 | CN1032630A Process for separation of antimony sulfide ore from arsenopyrite and reagents used |
| 05/02/1989 | US4826588 Pyrite depressants useful in the separation of pyrite from coal |
| 04/26/1989 | EP0313116A2 Method of processing contaminated soil |
| 04/26/1989 | CN1032500A Method of using fatty ester of hydrocarbon-oxidizing alkane alcoholamine as regulative agent for oxidizing coal |
| 04/20/1989 | DE3733583A1 Method and apparatus for producing very fine air bubbles for the purpose of floatation of sludges |
| 04/19/1989 | EP0311759A2 Novel collectors and processes for making and using same |
| 04/19/1989 | CN2036189U Waste paper decolouration and flotation machine |
| 04/18/1989 | US4822493 Method for separation of coarse particules |
| 04/18/1989 | US4822483 Collector compositions for the froth flotation of mineral values |
| 04/13/1989 | DE3733234A1 Polysaccharide aus dem endosperm des samens von prosopis juliflora, verfahren zu deren gewinnung und ihre verwendung Polysaccharides from the endosperm of the seed of prosopis juliflora, process for their manufacture and their use |
| 04/12/1989 | EP0310720A1 Process for using fatty esters of alkanolamine hydroxyalkylates as oxidized coal conditioners |