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| Number | Title | Issue Date |
| 8011514 | Modified amine-aldehyde resins and uses thereof in separation processes Modified resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These modified resins are especially useful as froth flotation depressants in the beneficiation of many types of m... | 09/06/2011 |
| 7954643 | Use of a derivative of aspartic acid as a collector in froth flotation processes A derivative of aspartic acid is used as a collector for a phosphate containing mineral, such as apatite, in a froth flotation process. According to the invention the collector has a high selectivity for phosphate containing minerals even in the presence of carbonat... | 06/07/2011 |
| 7942270 | 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... | 05/17/2011 |
| 7913852 | Modified amine-aldehyde resins and uses thereof in separation processes Modified resins are disclosed for removing a wide variety of solids and/or ionic species from the liquids in which they are suspended and/or dissolved. These modified resins are especially useful as froth flotation depressants in the beneficiation of many types of m... | 03/29/2011 |
| 7753212 | Recovery of valuable metals A continuous flotation process and apparatus for iron-containing sulphides in ores and concentrates of ores are disclosed. The process includes adjusting the pH of an aqueous pulp of the ores or concentrates of the ores to be in the range of 6.5-8.5 and thereafter a... | 07/13/2010 |
| 7624878 | 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... | 12/01/2009 |
| 7516849 | Froth flotation process with pH modification This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the recovery while generally maintaining or improving selectivity, thus the g... | 04/14/2009 |
| 7461745 | 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... | 12/09/2008 |
| 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 |
| 7389881 | Flotation A method of recovering a valuable component from a feed slurry in minerals processing plant for a mined material is disclosed. The method includes separating the feed slurry on the basis of particle size into at least two streams, of which one stream is a fines stre... | 06/24/2008 |
| 7381305 | Method and apparatus for monitoring liquid and solid contents in a froth A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation operation. Specifically, electrodes are immersed in the froth generated ... | 06/03/2008 |
| 7360656 | Method to improve the cleaner froth flotation process The present invention provides a method to improve the cleaner froth flotation process for the selective separation of ore values including, for example, copper, zinc, molybdenum, iron and mixtures there of, in existing flotation plants comprising the step of adding... | 04/22/2008 |
| 7355140 | Method of and apparatus for multi-stage sorting of glass cullets A method and system for sorting different colored objects, preferably glass cullets, into separate groups of same colored objects comprising a plurality of sorting devices for receiving an input feed of different colored objects and sorting the different colored obj... | 04/08/2008 |
| 7351929 | Method of and apparatus for high speed, high quality, contaminant removal and color sorting of glass cullet A system for sorting a mixed stream of different colored cullet into separate groups of same colored cullet comprises a light emitting source for transmitting light, such as white light, through a cullet, and a camera having a plurality of pixels for receiving light... | 04/01/2008 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7314139 | Process for sulphide concentration The present invention relates to a gravity/flotation circuit where a mineral stream, such as a flotation rougher or cleaner concentrate, undergoes a two stage size separation wherein: i) the screen of the first stage provides a coa... | 01/01/2008 |
| 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 |
| 7291577 | Hydrometallurgical process for production of supported catalysts A process for the production of a supported catalyst. The process comprises heating a slurry that comprises a catalyst support and at least one active catalytic ingredient precursor. Gas is introduced to the slurry at a sufficient pressure to reduce the at least one... | 11/06/2007 |
| 7285219 | Chromatographic separation member and method There is described a chromatographic separation member including a substrate carrying on at least one surface a thin layer of a chromatographically active capture material. Also described is a chromatographic separation method for separating a component of interest ... | 10/23/2007 |
| 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 |
| 7253331 | Molecular sieve catalyst composition, its making and use in conversion processes The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to a conversion process f... | 08/07/2007 |
| 7246761 | Process reactor and method for the electrodynamic fragmentation In a process reactor and a method for the electro-dynamic fragmentation of lumpy mineral materials by pulsed high voltage discharges, including a reaction chamber with a funnel-like bottom having a central outlet, an axially movable high-voltage electrode extending ... | 07/24/2007 |
| 7241725 | Barrier polishing fluid The polishing fluid is useful for polishing tantalum-containing barrier materials of a semiconductor substrate. The polishing fluid includes a nitrogen-containing compound having at least two nitrogen atoms comprising imine compounds and hydrazine compounds. The nit... | 07/10/2007 |
| 7219804 | Flotation processing including recovery of soluble nonferrous base metal values A method of flotation processing ores and other mineral materials containing soluble nonferrous base metal and sulfide minerals involves dissolving the soluble nonferrous base metal and precipitating the soluble nonferrous base metal in the form of a floatable preci... | 05/22/2007 |
| 7204937 | Metal oxides dispersant composition This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal oxides in an aqueous system that involves adding the dispersant compositio... | 04/17/2007 |
| 7197952 | Testing method for ball mills The invention relates to a testing method for designing a semiautogenous or an autogenous grinding circuit with at least one ball mill for grinding ore. In the method the ore is tested in two separate testing steps using the same testing sample of ore. ... | 04/03/2007 |
| 7183235 | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/27/2007 |
| 7172074 | Concentration/calcination process of zinc silicated minerals and concentrate zinc silicate based product A concentration process of zinc silicated minerals, particularly willemite and calamine concentration, by single operations, or conventional steps of ore treatment, some of which include the following: Preparation of stockpiles of different mineralogical and content... | 02/06/2007 |
| 7172143 | Method and plant for separating polymeric materials A method for recycling polymeric materials, including a mechanical separation step (B), a first density separation step (C), an intensive cleaning step (E), and a second density separation step (G, V) is described. Additional separation steps, such as a third densit... | 02/06/2007 |
| 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 |
| 7163105 | Froth flotation process and apparatus A froth flotation process typically used to separate particulate materials such as coal, has a mixed size feed (1) separated in a sieve bend (2) into a stream of relatively fine particles (3) and a stream of relatively coarse particles (14 | 01/16/2007 |
| 7152742 | Separation process for carpets Comminuted carpet pieces are fed to a first stirred tank together with an aqueous solution containing separating salt, to form a first suspension, which is fed to a first mechanical separating stage. A first high-solids phase, a second high-solids phase containing p... | 12/26/2006 |
| 7152741 | Use of ozone to increase the flotation efficiency of sulfide minerals The use of ozone during certain stages of metal separation by flotation degrades certain collectors that are absorbed on the particle surface, as well as the collectors and frothers in the liquid slurry. As a result, the mineral particle has a fresh surface and new ... | 12/26/2006 |
| 7150357 | Selective recovery of minerals by flotation A method of recovering a target mineral from an ore containing the target mineral and an iron sulphide mineral comprising the steps of: a) grinding the ore to liberate target mineral from the iron sulphide mineral; b) forming a pulp of said ore; c) selecting a colle... | 12/19/2006 |
| 7122500 | Molecular sieve catalyst composition, its making and use in conversion processes The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated mo... | 10/17/2006 |
| 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 |
| 7090768 | Surfactant for bitumen separation A surfactant for separating bitumen from sand includes an aqueous solution of hydrogen peroxide contacted with low rank coal. The low rank coal is preferably lignite. The surfactant may be used to clean bitumen, heavy oil and/or tar from sand, shale or clay at low c... | 08/15/2006 |
| 7063213 | Mediating electrostatic separation Methods, systems and media for separating polymer mixtures. A mixture including polymeric components is provided. A particulate media is added to the mixture, where the particulate media can selectively mediate a triboelectric charging of the polymer mixture. The me... | 06/20/2006 |
| 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 |
