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| Number | Title | Issue Date |
| 7837891 | Fatty acid by-products and methods of using same Methods and compositions for separating materials are provided. In an embodiment, the present invention provides a method of separating a first material from a second material. For example, the method can comprise mixing the first material and the second material in... | 11/23/2010 |
| 7695634 | Collector for sulfidic ores The present invention relates a flotation reagent for sulfidic ores, containing at least one compound of formula (1), wherein R2, R3, R4, R5, R6 and R7, independent of one another, represent hydrogen ... | 04/13/2010 |
| 7393462 | Process and reagent for separating finely divided titaniferrous impurities from Kaolin A mineral beneficiating reagent containing an alkyl hydroxamic acid or salt thereof and a nonionic surfactant. The alkyl hydroxamic acid or a salt thereof is represented by the formula: R—C(═O)N(R″)—OM, wherein R is linear or branched C2-... | 07/01/2008 |
| 7311206 | Quaternary ammonium compounds for froth flotation of silicates from an iron ore The present invention relates to a froth flotation process in which silicates are separated from an iron ore in the presence of a collector containing a quaternary ammonium compound having the formula R1R1N+R3R4 | 12/25/2007 |
| 7299930 | Collecting agent comprising ammoniated compounds (primary, secondary, tertiary amines), for use in the process of grinding and/or floating copper, molybdenum, zinc, and other contained mineral ores The present invention provides a ammoniated collector (amine, azepine, etc.) alone or in combination with other thiol-type collecting reactants, as well as sodium, iron, magnesium, and/or manganese sulfates, sulfurs, oxides, and hydroxides, acrylic acid polymers and... | 11/27/2007 |
| 7275643 | Environmentally safe promoter for use in flotation separation of carbonates from minerals An environmentally safe composition of matter for use as a promoter chemical in flotation separation of carbonates from industrial sand is disclosed. The promoter chemical replaces the standard petroleum sulfonate, glycol ether and nonphenol used in promoter chemica... | 10/02/2007 |
| 7169257 | Method of deinking waste paper using a reduced alkali system The present invention relates to methods and compositions for deinking waste paper, optionally in non-alkaline or low-alkaline systems. Deinking compositions are provided that include a blend of an alkoxylated fatty alcohol and a fatty acid. The compositions may fur... | 01/30/2007 |
| 7165680 | Selective flotation agent and flotation method A new reagent for the application in the preparation of mineral raw materials, mainly sulphide and oxyde mono- and polymetallic ores of non-ferrous metals, which are used as a corrosion inhibitor of the equipment and grinding bodies and as a selective collector of t... | 01/23/2007 |
| 7104404 | Collecting agent for sulphidic ores, the production and use thereof A method for the flotation of sulfide ores is disclosed. The method comprises contacting the sulfide ores with a composition comprising at least one compound of the formula where R1, R | 09/12/2006 |
| 7051881 | Collector for non iron metal sulphide preparation The present invention relates to a flotation reagent and a process for the flotation of sulfidic ores. The process comprises contacting the sulfidic ores with a combination of thionocarbamates and mercaptobenzothiazoles to improve the flotation of sulfidic ores, par... | 05/30/2006 |
| 7049452 | Preparation of fatty hydroxamate A method for preparing fatty hydroxamic acids and salts thereof comprising reacting a fatty acid derivative with an aqueous solution of hydroxylamine. ... | 05/23/2006 |
| 7014048 | Composition formed of mercaptans which can be used in a process for the flotation of ores Composition intended for the flotation of ores, comprising: from 70 to 95% of a combination (A) of n-dodecyl mercaptan (or NDM) and of tert-dodecyl mercaptan (or TDM), the NDM/TDM ratio by weight of which is between 0.5 and 1.5, an... | 03/21/2006 |
| 7007805 | Hydroxamate composition and method for froth flotation The invention relates to a hydroxamate composition for collection of minerals by froth flotation, the composition including an aqueous mixture of hydroxamate wherein the pH of the composition is at least 11 and a method of collecting mineral values from an aqueous o... | 03/07/2006 |
| 6994786 | Phosphate beneficiation process using methyl or ethyl esters as float oils A process for use in a phosphate ore beneficiation process to minimize the long-term environmental impact of the use of petroleum based hydrocarbon materials mixed with fatty acid based primary floatation reagents for froth flotation in the flotation of phosphate or... | 02/07/2006 |
| 6988623 | Beneficiation of sulfide minerals Froth flotation processes, useful for beneficiating base metal mineral values from metal sulfide ore, utilize a collector comprising N-butoxycarbonyl-O-butylthionocarbamate. ... | 01/24/2006 |
| 6919923 | Digital still camera capable of communicating audio and image data to/from a remote site A digital still camera includes means for converting an optical image into a digital electromagnetic image signal, means for transmitting an electromagnetic to designate a remote device accessible in accordance with a wireless telephone system, means for receiving a... | 07/19/2005 |
| 6827220 | Flotation of sulfide mineral species with oils This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing compounds may be from natural sources, such as vegetable oils, or synthesized... | 12/07/2004 |
| 6778881 | Monitoring and control of a froth flotation plant The invention uses machine-vision to improve the performance of a flotation operation to provide a substitute for conventional human vision and problem-solving abilities. The invention redirects the conventional approach of “characterizing the froth” to “measu... | 08/17/2004 |
| 6739454 | Mineral collector compositions and processes for making and using same Collector compositions of a mixture of a C6 to C22 fatty hydroxamic acid and an oil for use in a method the removal of impurities from mineral ores by the froth flotation method. The collectors are prepared by reacting an ester of a C6 | 05/25/2004 |
| 6712217 | Agent for dressing phosphate ore The invention relates to a flotation agent for phosphate ore, comprising a fatty acid as collector and alkoxylated alkylphenols as dispersing agents, characterized in that the alkylphenols are composed of a) 8 to 20% by weight of one or more dialkylphenols ha... | 03/30/2004 |
| 6568537 | Composition for the flotation of useful minerals products There is proposed a composition for the flotation of useful minerals, comprising a frother based on dimethyl(isopropenylethynyl)carbinol and a collector, the frother, for improving the technological flotation characteristics, having the following chemical... | 05/27/2003 |
| 6536595 | Mineral ore flotation aid In accordance with the present invention, there is provided a method of improving the separation of mineral values from their associated gangue. The method itself involves the addition of an effective amount of a treatment reagent to the froth flotation p... | 03/25/2003 |
| 6464828 | Polyester water-based defoamer Polyester water-based defoamers are prepared by reaction of a dimer fatty acid, a fatty acid and two different polyalkylene polyols, e.g. polypropylene glycol and polyethylene glycol. The resulting polyesters are readily dispersible in water to form a wat... | 10/15/2002 |
| 6409022 | Mineral collector compositions and processes for making and using same Collector compositions of a mixture of a C6 to C22 fatty hydroxamic acid and an oil for use in a method for the removal of impurities from mineral ores by the froth flotation method. The collectors are prepared by reacting an ester o... | 06/25/2002 |
| 6341697 | Selective flotation of phosphate minerals with hydroxamate collectors A method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by contacting in an aqueous in environment with a collector in ... | 01/29/2002 |
| 6210955 | Foam transport process for in-situ remediation of contaminated soils A process for in-situ remediation of contaminated soil in which at least one treating agent is introduced into the contaminated soil and transported to an underground in-situ treatment zone of the contaminated soil by a foam-based fluid.... | 04/03/2001 |
| 6200377 | Process for beneficiation of mixtures of mineral particles An improved process for the beneficiation of mixtures of mineral particles (such as kaolin clays) containing minerals which chelate with hydroxamates. The use of a silicon-containing compound in combination with a hydroxamate results in a more effective s... | 03/13/2001 |
| 6149013 | Enhanced flotation reagents for beneficiation of phosphate ores An improved phosphate ore beneficiation process is disclosed which comprises the employment of a novel combination of surfactants which, when combined with fatty acid collectors, enhances recovery of phosphate minerals in anionic flotation, even when used... | 11/21/2000 |
| 6145667 | Mineral collector compositions and processes for making and using same Collector compositions of a mixture of a C6 to C22 fatty hydroxamic acid and an oil for use in the removal of impurities from mineral ores by the froth flotation method. The collectors are prepared by reacting an ester of a C6 | 11/14/2000 |
| 6077389 | Method for deinking A deinking method for obtaining regenerated pulp of high brightness is provided. One or more of deinking agents selected from (a-1) to (a-2) given below are used, and a deinking step is carried out, in which a washing step is carried out at treating tempe... | 06/20/2000 |
| 6076682 | Process for froth flotation of silicate-containing iron ore The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by carrying out, at a pH of 8-11, a froth flotation in the presence of a depressing agent for the iron mineral and a collecting agent containing a... | 06/20/2000 |
| 6068131 | Method of removing carbon from fly ash A froth flotation method is provided for removing carbon from fly ash which utilizes an environmental friendly conditioning agent. The conditioning agent preferably comprises a biodegradable oil which is added to a slurry containing raw fly ash and water.... | 05/30/2000 |
| 6007618 | Kaolin clays which are conditioned prior to removing impurities Kaolin clays are conditioned for the removal of colored titaniferous impurities by (A) first mixing the kaolin clay with a collector to condition the impurities, in the absence of a dispersant, but in the presence of sufficient water to yield a mixture ha... | 12/28/1999 |
| 5962828 | Enhanced flotation reagents for beneficiation of phosphate ores An improved phosphate ore beneficiation process is disclosed which comprises the employment of a novel combination of surfactants which, when combined with fatty acid collectors, enhances recovery of phosphate minerals in anionic flotation, even when used... | 10/05/1999 |
| 5948323 | Colloidal particles of solid flame retardant and smoke suppressant compounds and methods for making them The present invention concerns finely divided particles of compounds that provide flame retardancy and/or smoke suppressant properties to fibers, textiles, polymeric articles, paper, paint, coating and insulation. More particularly, the present invention ... | 09/07/1999 |
| 5929408 | Compositions and methods for ore beneficiation Novel compositions comprised of a dialkyl aryl disulfonic acid and a collector different from the dialkyl aryl disulfonic acid are provided, said compositions being useful for beneficiation of ores. Novel methods for using compositions comprised of a dial... | 07/27/1999 |
| 5897810 | Coagulating agent for wastewater Shell fossil powder is added to a flocculation agent which is mainly composed of gypsum and silicate compound, and the mixture is added to a suspension. The mixing ratio of the flocculation agent and shell fossil powder is 3:1. The flocculation agent func... | 04/27/1999 |
| 5855771 | Pyrite depressant useful in floation separation The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depressing of pyrite with from about 0.05 to 0.75 kilograms per ton of concentrate solids, using a pyrite depressan... | 01/05/1999 |
| 5853571 | Pyrite depressant useful in flotation separation The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depressing of pyrite with from about 0.05 to 0.75 kilograms per ton of concentrate solids using a pyrite depressant... | 12/29/1998 |
| 5846407 | Pyrite depressant useful in flotation separation The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depression of pyrite with from about 0.125 to 1.250 pounds per ton of 2-S thironium-ethane sulfonate (IESA) as a py... | 12/08/1998 |
