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WO2000002662A9 |
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 ...
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WO/2000/043127A1 |
The invention relates to a device and a method for chemically and physically separating solid materials from a suspension using flotation. A rotationally symmetrical flocculation/flow reactor (20) is provided with outlets in the lower pa...
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WO/2000/025930A1 |
A mixing system for a flotation tank (10) includes a radial flow impeller (24) and an axial flow impeller (26) which are attached for rotation on a common shaft (32), with the axial flow impeller (26) below the radial flow impeller (24).
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WO/2000/021633A1 |
A method for treating liquid from a liquid source and separating particulate matter from the liquid comprising the following steps: providing a liquid source; pumping said liquid source (3) into at least one hydrocyclone system (30) wher...
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WO/2000/021386A1 |
A process for producing a feed pellet from grain comprising: grinding the grain; separating the ground grain into a water insoluble protein rich fraction and a water suspendable starch rich fraction by introducing the ground grain into a...
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WO/2000/021677A1 |
A method and apparatus (10) for decontaminating a liquid suspension comprising a decontaminating cell (12). The decontaminating cell (12) as shown in the Figure has an upper light contaminate collection hood (30) and/or a lower heavy con...
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WO/2000/020121A1 |
The invention relates to a method for separating lead from coated glass, especially glass from discarded picture tubes or similar lead-containing glass-like material. To achieve an improved method that makes it possible to separate lead ...
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WO1999016550A9 |
In a centrifugal rotor (1) for separation of a substance from a liquid mixture supplied to the centrifugal rotor there is delimited a separation chamber (7) having peripheral outlets (30). The centrifugal rotor comprises an outlet device...
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WO/2000/015345A1 |
The invention relates to a flotation cell line, wherein there are installed, in order to treat the flotatable material, several flotation cells so that the flotatable material can be set to flow through the flotation cell line. According...
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WO/2000/015344A1 |
The invention relates to a method for improving the operation of a flotation cell line, said flotation cell line comprising several flotation cells (1, 2, 3, 4, 5; 11, 12, 13, 14, 15) that are connected by means of liquid stream flow. Ac...
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WO/2000/015343A1 |
A flotation column cell (5) having an inlet (6) for pre-aerated feed slurry is provided with a draft tube (20) vertically orientated within the cell so that highly aerated slurry rises within the draft tube (20) into the froth layer (8)....
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WO/2000/015346A1 |
The present invention relates to a process for improving the recovery of valuable sulphide minerals. The process involves determining an Eh range within which the valuable sulphide mineral may be recovered by flotation without the need o...
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WO/2000/012220A1 |
A particle separating apparatus is provided with a stock solution feeder (1) for supplying a stock solution containing particles, a bubble generator (2) for generating air bubbles to promote the separation of particles, a first separator...
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WO/2000/009268A1 |
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 v...
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WO/2000/000443A2 |
A separation process is provided for treating a feed material comprising silica, feldspar, and metal impurities, including at least one of mica, iron impurities, or refractory heavy minerals, to form one or more products for use in makin...
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WO/1999/064163A1 |
A method of materials separation and particularly coal separation. The method comprising incorporating landfill-derived liquid such as landfill leachate in a separation process such as froth flotation. The incorporation of this liquid me...
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WO/1999/063123A1 |
Methods and compositions for increasing the recovery of precious metals from ore during heap leaching operations are disclosed. The methods add polypropylene glycol and alkylphenol ethoxylate in a paraffin oil solvent with the cyanide li...
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WO/1999/061699A1 |
The invention relates to a method for flotation of pollutants from an aqueous fibrous material suspension (S), said method being particularly used in the processing of printed or soiled used paper. According to the invention, the fibrous...
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WO/1999/061669A1 |
Collector compositions of a mixture of a C¿6? to C¿22? 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 C¿6? t...
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WO/1999/058249A1 |
Cryogenic sedimentation is effective to bring about the rapid separation of submicron particles from powder mixtures containing such particles without leading to significant agglomeration.
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WO/1999/058248A1 |
A method of froth flotation consists of providing a material in particulate form, producing a pulp of the material in a liquid, and contacting the pulp with gas bubbles rising through the pulp to create a froth phase separated from the p...
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WO/1999/055837A2 |
Separation of target material from a liquid sample is achieved by coupling the target to targetable encapsulated gas microbubbles, allowing the microbubbles and coupled target to float to the surface of the sample to form a floating micr...
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WO/1999/054543A1 |
A mixture of air, paper stock made from recycled paper, foaming agents and surfactants are injected into a pressurized container (22). The container has a stock inlet (23) at an end opposite a stock outlet (50), and three outlets (38, 58...
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WO/1999/050202A1 |
An improved process for the selective flocculation of impurities from clays is disclosed. The process comprises blunging the clay in the presence of dispersing agents, conditioning the blunged clay with aliphatic or aromatic hydroxamic a...
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WO/1999/049127A1 |
The invention relates to a process for removing contaminants from waste paper comprising a) leading an inert gas through an aqueous pulp, which pulp comprises waste paper fibers and contaminants, to produce a foam comprising at least par...
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WO/1999/047266A1 |
A process which uses selective flocculation with hydroxamates for the beneficiation of mixtures of mineral particles (such as kaolin clays). The increased selectivity of hydroxamates for certain mineral phases within kaolin clays and oth...
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WO1998043741A9 |
A method of beneficiating siliceous phosphate, designated as "reverse Crago", which includes subjecting a siliceous phosphate-containing flotation feed to amine flotation so as to form a prefloat concentrate and subjecting the prefloat c...
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WO/1999/036165A1 |
The invention relates to a method for generating a foam from a liquid phase and a gaseous phase, a method for circulating a foam in an installation and a method for cleaning an installation by circulating a foam. The foam is generated by...
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WO/1999/032229A1 |
An apparatus and method for flotation of at least one mineral included in a slurry, which includes a flotation treatment enclosure in the form of a flotation cell (10) for receiving the mineral-containing slurry and for subjecting the sl...
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WO/1999/032407A1 |
The invention relates to a flotation method and a flotation reactor. The invention provides a method and a device, wherein the formation of the gas bubbles needed for flotation are produced by catalytic reaction of a chemical substance, ...
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WO/1999/030793A1 |
The invention relates to an inlet arrangement for a flotation tank (4) comprising a first inflow opening (2) for a first fluid, a second inflow opening (18) for a second fluid and an outflow opening (16) for the first and second fluids. ...
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WO/1999/031314A1 |
A mixture of air and paper stock (36) made from recycled paper from which the ink particles have been chemically released is injected into a cylindrical processing vessel (22). Added surfactants create a foam (40) from the air as it rise...
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WO/1999/027177A1 |
Hydrophobic contaminants are removed from repulped waste paper by preserving the hydrophobicity employing a minimum of reagent chemicals if any and a minimum of residence time of repulped waste paper in water. Dry repulping is used and o...
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WO/1999/024169A1 |
An apparatus (10) for removing materials from a bath of fluid (14) includes at least one vessel (12) having a feed inlet and outlet. The vessel (12) contains a bath of fluid (14) and froth (20) located above the bath (14). At least one d...
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WO1998056493A9 |
An improved filtration system (10) includes a vessel (12) divided into a concentrate chamber (20) and a permeate chamber (22) by a permeable septum (16). An ultrasonic wave generator (30) is mounted to the vessel (12) and positioned to d...
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WO/1999/015278A1 |
An apparatus for cleaning a fiber mass suspension, the apparatus comprising a receptacle (1) and an inlet channel (2) and an outlet channel (3) for feeding the suspension into and for discharging it from the receptacle. In addition, the ...
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WO/1999/003592A1 |
A fluid conditioning system and method is disclosed for coupling to a first solution source comprising a suspension solution and particles suspended in the suspension solution. The fluid conditioning system includes a containment vessel ...
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WO/1999/003558A1 |
An invention provides a process for the selection from a particulate pharmaceutical product of particles of a preselected size, said process comprising (i) obtaining a substantially homogeneous suspension of said particulate pharmaceutic...
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WO/1999/003813A1 |
The disclosure involves a novel amine ether acid salt surfactant. The amine constituent of the surfactant may include ether amines or fatty-based amines. The ether acid constituent of the surfactant, in particular, imparts liquidity to t...
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WO/1998/057749A1 |
Process for treating fly ash to enhance the fly ash as a pozzolan for portland cement mixes and to separate therefrom a substantial carbon compound and/or to increase the fineness of the fly ash includes the treatment of fly ash slurry w...
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WO/1998/057888A1 |
A method of enhancing the brightness and increasing the yield of a kaolin clay by optimizing the removal of titania and mica impurities in the clay. The method is a selective flocculation process wherein the clay is fed to a blunger (12)...
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WO/1998/056483A1 |
A centrifugal flotation cell (10) is provided for use in an effective separation process to rapidly recover greater quantities of valuable fine particles. In the process, a slurry of fine particles is injected with air bubbles and moved ...
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WO/1998/056509A2 |
A user-friendly centrifugal flotation cell with a rotating drum is provided for use in an efficient separation process to rapidly recover greater quantities of valuable fine particles. In the process, a slurry of fine particles is inject...
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WO/1998/054402A1 |
The invention realises a reactor (1) for liquids purification comprising: a tank (2) containing the liquid to be purified; a plurality of upper injectors (3) suitable for introducing in the tank (2) said liquid to be purified with an aer...
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WO/1998/054403A1 |
The invention realises a baffle (40) for a reactor (1) for liquids purification, said reactor comprising: a tank (2) containing the liquid to be purified; a plurality of injectors (3, 20) suitable for introducing in the tank (2) said liq...
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WO/1998/054400A1 |
A water soluble, surface active, polymeric agent is mixed with digestion liquor, preferably with an additional surface active defoamer coagulant agent prior to or during acidification of the alkaline digestive liquor. This results in an ...
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WO/1998/051618A1 |
A known method for removing biomass from a liquid eliminates only cells bonded on solid substances and proteins, but not suspended cells. The present invention relates to a method enabling a larger amount of biomass to be removed with a ...
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WO/1998/046824A1 |
A mixture of air and paper stock (36) made from recycled paper from which the ink particles have been chemically released is injected into a cylindrical processing vessel (22). Added surfactants create a foam (40) from the air as it rise...
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WO/1998/041328A1 |
The invention relates to a fibre-optic Sagnac interferometer, especially for determining rotation speeds (fibre optical gyroscope), comprising a light source (1) which is connected by an optical waveguide (9) to an input of an optical di...
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WO/1998/041327A1 |
The present invention is a process for recovering valuable minerals using flotation air lift concentration (82) and progressive ore reduction (56, 96).
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