| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | METHODS, DEVICES, SYSTEMS AND PROCESSES FOR UPGRADING IRON OXIDE CONCENTRATES USING REVERSE FLOTATION OF SILICA AT A NATURAL pH | US15341643 | 2016-11-02 | US20170120258A1 | 2017-05-04 | Ronney Rogerio Rodriguez Silva; Jonathan Sgarlata; Justin Carlson |
| Cationic reverse flotation methods, systems, and processes for producing a marketable iron oxide concentrate from an iron oxide mineral slurry (“treatment slurry”), wherein the iron oxide content of the concentrate is greater than the iron oxide content of the treatment slurry, include introducing the treatment slurry into a flotation cell, together with a collector, a frother and optionally an iron oxide depressant, and recovering two flow streams from the flotation cell, namely a froth fraction (also referred to as a flotation tail fraction) and a sink material fraction (also referred to as the flotation concentrate), wherein the treatment slurry in the flotation cell is maintained at a Natural pH. | ||||||
| 162 | BENEFICIATION OF RARE EARTH ELEMENTS BEARING ANCYLITE | US15225690 | 2016-08-01 | US20170028410A1 | 2017-02-02 | Corby G. Anderson; Hao Cui |
| Disclosed herein are methods and systems for recovery of ancylite, a rare earth mineral comprising strontium carbonate, from rare earth ore. In many embodiments, the disclosed methods and systems provide for recovery of greater than 50% of the ancylite from an ancylite containing ore. In many embodiments, the ore is subjected to flotation in the presence of an acid, for example a hydroxamic acid, such as octanohydroxamic acid. The ore may also be subjected to magnetic separation, for example wet high intensity magnetic separation. | ||||||
| 163 | Flotation of silicates from ores | US14440982 | 2013-12-02 | US09550191B2 | 2017-01-24 | Odair Alves De Lima; Kelly Ivone Pina Albino |
| The present invention relates to a method for the flotation of silicates from ores in the presence of a collecting agent and an effective amount of a froth modifier/collecting booster comprising at least one of the compounds of general formula (I) or mixtures thereof: wherein X is C1-C3 alkyl; R′ is straight or branched hydrocarbyl group containing 8 to 22 carbon atoms; n is integer from 2-4; m can vary from 0 to 2 and R′ is X or —(CH2)n-N(X)2, with the proviso that when R′ is —(CH2)n-N(X)2, then m is 1. | ||||||
| 164 | Blends of polypropylene polyglycol and phenolic glycol ethers and method of foam control using such blend | US13989935 | 2011-12-01 | US09415330B2 | 2016-08-16 | Yuri Alencar Marques; Marcelo Beck Graziani |
| A blend comprising from 1 to 99 weight percent one or more polypropylene glycols wherein each polypropylene glycol has a weight average molecular weight of greater than or equal to 1000 grams/mole and from 1 to 99 weight percent one or more dipropylene glycol phenyl ethers and/or diethylene glycol phenyl ethers wherein the blend has a viscosity (ASTM D445, @ 25° C.) of less than or equal to 400 cSt and viscosity (ASTM D445, @ 40° C.) of less than or equal to 200 cSt, is provided. Processes using the blend in mining applications are also provided. | ||||||
| 165 | METHOD FOR RECOVERING A COPPER SULFIDE FROM AN ORE CONTAINING AN IRON SULFIDE | US14904697 | 2014-07-11 | US20160158768A1 | 2016-06-09 | Gerhard Arnold; Ingo Hamann; Alan Hitchiner |
| In a method for recovering a copper sulfide concentrate by froth flotation from an ore containing an iron sulfide, hydrogen peroxide is added to the conditioned mineral pulp before or during flotation in an amount effective to lower the redox potential of the conditioned mineral pulp in order to improve concentrate grade and recovery of copper sulfides. | ||||||
| 166 | Flotation of silicates from ores | US14440982 | 2013-12-02 | US20150290659A1 | 2015-10-15 | Odair Alves De Lima; Kelly Ivone Pina Albino |
| The present invention relates to a method for the flotation of silicates from ores in the presence of a collecting agent and an effective amount of a froth modifier/collecting booster comprising at least one of the compounds of general formula (I) or mixtures thereof: wherein X is C1-C3 alkyl; R′ is straight or branched hydrocarbyl group containing 8 to 22 carbon atoms; n is integer from 2-4; m can vary from 0 to 2 and R′ is X or —(CH2)n-N(X)2, with the proviso that when R′ is —(CH2)n-N(X)2, then m is 1. | ||||||
| 167 | Foam Prevention In The Reverse Flotation Process For Purifying Calcium Carbonate | US14409258 | 2013-05-22 | US20150273481A1 | 2015-10-01 | Stefan Dilsky; Wagner Claudio Da Silva; Monica Speck Cassola; Nilson Mar Bartalini; Zaira Guimaraes Duarte; Jorge Antonio Arias Medina; Antonio Pedro Oliveira Filho |
| This invention relates to an composition, comprising A) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate B) at least one antifoam agent C) a solvent and its use in the reverse flotation of calcium carbonate. | ||||||
| 168 | METHODS FOR FACILITATING MINERAL EXTRACTION | US14579550 | 2014-12-22 | US20150174588A1 | 2015-06-25 | Brian DANYLIW; John RICHARDSON |
| There is provided methods for separating a target material from a raw material by mixing the raw material with water to form a slurry, adding a collector compound to the slurry to modify a relative hydrophobicity of a surface of the target material, adding a facilitator compound to enhance the modification of the relative hydrophobicity of the surface, and forming a froth including a concentrate of the target material. Disclosed methods may also include adding a facilitator compound to a raw material slurry that has been treated with a collector compound and a reagent for neutralizing the collector compound. | ||||||
| 169 | METHOD AND APPARATUS FOR SEPARATION OF MOLYBDENITE FROM PYRITE CONTAINING COPPER-MOLYBDENUM ORES | US14399468 | 2012-05-10 | US20150068956A1 | 2015-03-12 | Gennady Nikolaevich Mashevskiy; Rodrigo Grau; Mikko Lyyra; Aleksandr Vladimirovich Petrov |
| A method and an apparatus for the separation of the mineral components of a pyrite containing copper-molybdenum ore by flotation. The method comprises grinding the ore in the presence of soda ash in an open circuit to produce an aqueous ore slurry; subjecting the slurry to a collective flash flotation step (10) in the presence of soda ash and sodium sulphide to recover a first part of metal sulphides of the ore in the form of a first concentrate (C1); subjecting the tailings (T1) of the collective flash flotation step (10) to a grinding step (13) and to a collective rougher flotation step (14) to recover a second part of metal sulphides of the ore in the form of a second concentrate (C3); and subjecting the concentrate (C1) of the collective flash flotation step (10) and the concentrate (C3) of the collective rougher flotation step (14) to a selection step (12) to separate molybdenite from the other metal sulphides of the concentrate. | ||||||
| 170 | ENRICHMENT OF METAL SULFIDE ORES BY OXIDANT ASSISTED FROTH FLOTATION | US14374526 | 2013-01-25 | US20140369906A1 | 2014-12-18 | Gerhard Arnold; Terry Brown; Ingo Hamann; Alan Hitchiner |
| The present invention is directed to methods that can be used in the enrichment of metal sulfide ores in desired minerals in cases where the ores have sulfide-containing gangues. The method involves adding an oxidant to slurries prepared from the ores during, or immediately prior to froth flotation. | ||||||
| 171 | FLOTATION REAGENTS AND FLOTATION PROCESSES UTILIZING SAME | US14256042 | 2014-04-18 | US20140314641A1 | 2014-10-23 | Devarayasamudram Ramachandran NAGARAJ; Tarun BHAMBHANI; Mukund VASUDEVAN; Puspendu DEO; Haunn-Lin Tony CHEN |
| Methods of enhancing recovery of value sulfide and/or precious-metal minerals from an ore containing said minerals and a Mg-silicate, slime forming mineral, and/or clay, and which is subjected to a froth flotation process, by adding to one or more stage of the froth flotation process a froth phase modifier having a polymer containing one or more functional groups, and optionally a monovalent ion modifier enhancing agent, thereby enhancing recovery of a value sulfide mineral and/or a precious metal-bearing mineral. | ||||||
| 172 | ACTIVATED FLOTATION CIRCUIT FOR PROCESSING COMBINED OXIDE AND SULFIDE ORES | US14153931 | 2014-01-13 | US20140197076A1 | 2014-07-17 | William D. Simmons |
| A method of extracting targeted metallic minerals from ores that contain sulfide metallic minerals along with oxide minerals, carbonate minerals, silicate minerals, halide minerals or combinations thereof. In the method, an ore slurry containing the metallic mineral in oxide, carbonate, silicate or halide form is provided. The slurry is activated by adding sodium thiosulfate and sodium metabisulfite, whereby the targeted metallic mineral forms an intermediary metal complex with the sodium thiosulfate and sodium metabisulfite. One or more metal release components are introduced into the ore slurry; whereby the targeted metallic mineral is released from the intermediary metal complex to form a metal sponge. This metal sponge is then subjected to a flotation process, whereby the targeted metallic mineral is drawn out of the ore slurry and thereby extracted from the ore. | ||||||
| 173 | COMPOSITION AND METHOD FOR IMPROVEMENT IN FROTH FLOTATION | US13687042 | 2012-11-28 | US20140144815A1 | 2014-05-29 | Jianjun Liu; Kevin L. O'Brien |
| The invention provides methods and compositions for improving a froth flotation type separation. The method uses a thickener to improve the effectiveness of an emulsifier. The improvement allows for low dosages of emulsifier to work well so the emulsifier does not cancel out the effectiveness of other additives in the slurry such as collectors, frothing agents, regulators, depressors, deactivators, and/or activators. | ||||||
| 174 | SET OF COLLECTABLE, SUPERIMPOSABLE CARDS | US12681554 | 2008-10-02 | US20110004043A1 | 2011-01-06 | Anselmo Basso |
| A process for decontaminating a medium polluted with metals and hydrophobic organic compounds (HOC) includes providing an acidic slurry of water, acid, chloride salt, surfactant, and the polluted medium. Flotation is preformed on the acidic slurry to form a HOC-rich froth and an HOC-depleted slurry and the froth is recovered. The slurry is separated to obtain a treated solid and a liquid effluent rich in metallic ions. Preferably, the process also includes recuperating the metals by chemical precipitation and/or electrodeposition to produce a treated solution. Also provided are a decontaminant having an acid, a chloride salt, and a surfactant as well as a chemical kit for decontaminating the polluted medium including the decontaminant in which the acid, chloride salt and surfactant can be mixed with polluted medium in the presence of water before removing at least a portion of the metals and HOC from the polluted medium. | ||||||
| 175 | METHODS FOR THE RECOVERY OF MOLYBDENUM | US11533661 | 2006-09-20 | US20080067112A1 | 2008-03-20 | Martin C. Kuhn |
| A method for the recovery of molybdenum from an ore that includes a molybdenum-bearing mineral, such as molybdenite. The ore is treated to recover metal values from the ore, such as base metals, by utilizing a depressant to depress the flotation of the molybdenite. The tailings, which can include insoluble silicate minerals in addition to the molybdenite, are then activated to render the molybdenite floatable in one or more subsequent flotation steps, thereby producing a high-grade molybdenum concentrate. | ||||||
| 176 | Flutation process for the flutation of coarse fractions of potash ores | US249508 | 1994-05-26 | US5456362A | 1995-10-10 | Janusz S. Laskowski; Qun Wang |
| A process for the flotation of coarse potash ore fractions in an aqueous brine containing frother that comprises: (a) using a column flotation device in which air bubbles are generated by a sparger that utilizes high intensity shearing to mix and disperse air into brine containing frother; (b) removing a portion of the suspension at another point in the direction of flow of the suspension to regulate the upward flow rate of the suspension past the point where the air is dispersed into the suspension and thereby reducing fine particles entrainment in the froth product. The suspension can be conditioned with an aqueous composition comprising a hydrocarbon extender oil and a substantially saturated long chain primary mine, optionally comprising an acid, such as a mineral acid or carboxylic acid, to emulsify the oil in the composition, or can be conditioned with an aqueous composition comprising a long chain primary amine having an iodine value ranging from about 20 to about 70 cg/g. | ||||||
| 177 | Separation of normally hydrophobic plastic materials by froth flotation | US60698 | 1993-05-10 | US5377844A | 1995-01-03 | Jiann-Yang Hwang |
| A targeted particulate, synthetic organic plastic material having normally hydrophobic surface characteristics is separated from a mixture of two or more of such plastic materials by conditioning the mixture of plastic materials in a flotation cell with a heteropolar surfactant which has a hydrophile-lipophile balance (HLB) value greater than 5 and which selectively depresses the targeted plastic material by making the surfaces thereof more hydrophilic without substantially affecting the surfaces of the other plastic material(s) and introducing gas bubbles into the resulting conditioned pulp such that the gas bubbles selectively adhere to the surfaces of the other plastic materials(s) and cause them to float. The targeted plastic material is recovered in the cell product and the other plastic material(s) is recovered in the float concentrate. | ||||||
| 178 | Flotation separation of arsenopyrite from pyrite | US799325 | 1991-11-27 | US5171428A | 1992-12-15 | Morris J. V. Beattie; Jean P. Duteroue |
| Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO.sub.3.sup.- ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings rich in arsenopyrite. | ||||||
| 179 | Method for achieving enhanced copper flotation concentrate grade by oxidation and flotation | US626825 | 1990-12-13 | US5110455A | 1992-05-05 | Richard O. Huch |
| The present invention involves a method for separating copper sulfide from rimmed iron sulfide by flotation. Prior to flotation, a slurry containing the sulfides is oxidized and conditioned to achieve a pH greater than pH 9. Thereafter, the slurry is subjected to a froth floatation process by which a copper sulfide, such as chalcopyrite, concentrate is recovered. | ||||||
| 180 | Sequential and selective flotation of sulfide ores | US599620 | 1990-10-18 | US5074994A | 1991-12-24 | Harold M. Ray; Nathaniel Arbiter |
| A sequential flotation process for the separation of components of a sulfide ore selected from the group consisting of copper and lead sulfide containing ores and copper, zinc and lead sulfide containing ores in which the copper component is initially selectively floated directly from said ore by conditioning the ore with a combination of a source of bisulfite ion and causticized starch to produce a conditioned ore having a pH between approximately 5.7 and 6.5, and thereafter treating the conditioned ore with a collector selected from the group consisting of dialkyl dithiophosphates and alkyl dithiophosphinates. | ||||||
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