| 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 | FLOTATION MACHINE | EP02753099.7 | 2002-08-12 | EP1417014A1 | 2004-05-12 | ORAVAINEN, Heikki; JÄPPINEN, Risto; AIROLA, Raimo; SORMUNEN, Jari |
| The invention relates to a flotation machine used for separating valuable ingredients, such as metal concentrates, from the rest of the material, which flotation machine comprises at least means for feeding slurry to be treated in the flotation cell into said flotation cell, means for agitating the slurry by a rotor which is to be rotated by a rotation device installed in the vertical direction of the flotation cell underneath the rotor, means for feeding air into the slurry, means for removing the material flotated in the flotation cell and means for removing material that is left non-flotated in the flotation cell. According to the invention the shaft (11,28) of the rotor (10, 26) meant for agitating the slurry (3, 23) and for feeding air into the slurry (3, 23) and of the rotation device (12, 27) is sealed in the flotation cell (1,21) by a mechanical sealing member (15). | ||||||
| 162 | Method and apparatus for feeding coolant liquid in a lathe | EP03008863.7 | 1997-02-12 | EP1338380A1 | 2003-08-27 | Nakai, Yoshikazu |
A method and apparatus for feeding coolant liquid to a lathe with a nozzle (53) having a discharge port (58) of substantially rectangular cross section and a constricted curved surface portion (62) on its inner wall to produce a turbulent flow and a loosely mounted tongue piece (59) crossing the section of the discharge port and projecting outside the port. The coolant is thus discharged as a collection of particulate turbulent flows containing air bubbles drawn into the coolant liquid as it passes by the tongue piece. The coolant is caused to impinge on the rotating peripheral surface (56) which is continuous with the region of the workpiece in contact with the cutter (57). |
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| 163 | APPARATUS AND PROCESS FOR RECOVERING A DESIRED FRACTION OF A RAW MATERIAL | EP01914074.8 | 2001-03-09 | EP1261433A2 | 2002-12-04 | CRADDOCK, Mark Norman Paul; KILNER, Michael Roy; DALE, Warren Wentworth |
| An apparatus (10) for recovering a desired fraction of a raw material bearing the desired fraction includes a vessel or cell (12) defining a treatment chamber (14) therein and an inlet (22) into the chamber (14) for introducing a slurry of raw material to be treated into the chamber (14). An attrition zone (16) is defined in a portion of the chamber (14) near the inlet (22) in the flow path of material introduced into the chamber (14) so that particles of the raw material are caused to impact against each other. A flotation zone (18) is defined in a distal portion of the chamber (14), in flow communication with the attrition zone (16), in which the attritioned particles are contacted with gas bubbles (26). This forms a froth phase (28) separated from the slurry by a slurry-froth interface such that the desired fraction is either selectively taken up into the froth phase (28) by the gas bubbles or selectively left behind in the slurry. The froth phase (28) flows from the (14) chamber via an appropriate outlet (36). | ||||||
| 164 | Dispositif de diffusion d'un gaz dans un liquide par une turbine à ailettes | EP02290052.6 | 2002-01-10 | EP1232784A1 | 2002-08-21 | Ponthieu, Georges |
Dispositif aérateur mixeur destiné à diffuser un gaz dans un liquide. Il comprend un moteur (1), une boite à vent (2) et un plateau (9) équipé d'ailettes dont certaines (11) sont prolongées vers le haut (16) à l'intérieur de l'ouverture d'alimentation en gaz de la turbine, cette disposition assurant un nettoyage de la turbine au niveau de ladite ouverture. Application au traitement d'effluents aqueux contenant des solides en suspension ainsi qu'au dégraissage et deshuilage d'effluents aqueux. |
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| 165 | VERFAHREN UND VORRICHTUNG ZUR FLOTATION VON STÖRSTOFFEN AUS EINER WÄSSRIGEN FASERSTOFFSUSPENSION | EP99920842.4 | 1999-05-04 | EP1080265B1 | 2002-08-21 | KEMPER, Martin |
| 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 material suspension (S) is introduced into the already formed froth (2) which then sinks into the latter to form a liquid layer (3) from which the accepted stock (S') is extracted. | ||||||
| 166 | FLOTATION TANK IMPELLER | EP96927781.3 | 1996-08-14 | EP0844911B1 | 1999-12-08 | PEAKER, Richard, Asheton; SCHLITTLER, William, John; TRUDEL, Joseph, Rene; SVENSSON, Ulf, Krister |
| An impeller for use with apparatus to enhance mixing of a gas and a liquid, as used for example in froth flotation apparatus, having a substantially upright portion (11) substantially parallel to the axis of rotation (17), and a plurality of vanes (12) extending outwardly therefrom, at least some of the vanes (12) having an upper part (19) adapted to induce liquid flow generally downwardly towards the impeller and a lower part (20) adapted to induce liquid flow generally upwardly towards the impeller, wherein the impeller further comprises barrier means (14) at least partially dividing the upper and lower parts, and a gas input situated on the same side of the barrier means (14) as the lower part (20). The barrier means (14) may comprise a flange like member in a plane generally perpendicular to the axis of rotation (17) and may intersect, or be integral with at least part of the vanes. | ||||||
| 167 | FLOTATION CELL CROWDER DEVICE | EP96938681.0 | 1996-11-01 | EP0800422A1 | 1997-10-15 | DEGNER, Vernon, R. |
| A froth crowder device (10) is disclosed for incorporation into a froth flotation cell (12) to improve the froth removal dynamics of the flotation cell. The froth crowder device (10) is positioned within a froth flotation cell (12) above and below the overflow launder, and provides a sloped surface to direct froth toward the overflow launder (28) in an expedited manner. Experimental data confirms that use of a froth crowder device (10) as disclosed expedites movement of the froth toward the launder (28) for more efficient operation, permits operating the rotor (46) of the flotation cell (12) at reduced speeds without compromising the efficiency of operation, and reduces the amount of air necessary to produce a froth in the cell. Experimental data also confirms that little or no surface eddies are observed in froth flotation cells (12) in which a crowder device (10) as disclosed is used. By comparison, flotation cells without use of a crowder device experience increased occurrences of surface eddies which traps the froth within the tank and extends froth residency time to the ultimate detriment of separation efficiency. | ||||||
| 168 | Goulotte d'écrèmage pour dispositif de séparation par flottation et appareil flottateur utilisant une telle goulotte | EP92402476.3 | 1992-09-10 | EP0537037B1 | 1997-07-02 | Hamdan, Adnan |
| 169 | CENTRIFUGAL FLOTATION APPARATUS AND METHOD | EP90905260.7 | 1990-03-06 | EP0465527B1 | 1995-06-14 | Campbell, Thomas P. |
| A powered bowl assembly includes walls (21) and a tubular shaft (4) journalled within a base (1) of the apparatus. A pressurized air flow is discharged into slurry in the bowl assembly via a circular array of bubble generators (10). An impeller (13) discharges the slurry outwardly against an upwardly inclined annular surface (18) of the bowl assembly to cause the slurry to merge upwardly with the streams to promote flotation. Slurry within the bowl assembly forms a vortex (V) with particle flotation forming a froth layer (F) inwardly of the slurry vortex (V). The froth exits the bowl assembly upwardly past a barrier (30) partially closing the bowl assembly. Heavier gangue particles exit via an outlet (29) about the bowl assembly periphery. A collector shroud (32) is partitioned to receive the froth and the heavier waste material. A modified form of the apparatus includes an independently powered bowl assembly and impeller. | ||||||
| 170 | Aeration apparatus | EP87311091.0 | 1987-12-16 | EP0272107B1 | 1994-04-13 | Jameson, Graeme John |
| Aeration apparatus for use in recovering values from slurries in a flotation cell (10) wherein the impeller (20) has a plurality of generally radial downwardly extending blades on its lower surface, each blade extending from the hollow drive shaft (19) of the rotor to the periphery of the impeller and generally increasing in height radially outwardly along the length of the blade. In the preferred form of the invention a stator (21) is provided having corresponding radial blades located beneath the impeller (20). | ||||||
| 171 | Froth flotation machine | EP93301744.4 | 1993-03-08 | EP0560561A3 | 1994-03-02 | Lawrence, George A. |
The invention relates to an improved flotation cell design for the mining industry. The flotation cell includes a cylindrical froth flotation unit 52 and a unique hexagonal overflow froth launder 84. The design optimizes the froth flotation process and allows for the economical utilization of the honeycomb packing arrangement of cells. |
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| 172 | METHOD AND APPARATUS FOR EFFECTING GAS-LIQUID CONTACT | EP91900143.8 | 1990-12-04 | EP0504203B1 | 1993-11-10 | SMITH, James, W.; ELLENOR, David, Todd, Richard; HARBINSON, John, N. |
| Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell also is described. In order to effect efficient mass transfer and rapid reaction, gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear. To assist in the reaction, a surrounding shroud has a plurality of openings, generally of aspect ratio of approximately 1, of equal diameter and arranged in uniform pattern, such as to provide a gas flow therethrough less than about 0.02 lb/min/opening in the shroud. In general, the gas velocity index is at least about 18 per second per opening, preferably at least about 24 per second per opening. Each of the openings has an area corresponding to an equivalent diameter less than about one inch. | ||||||
| 173 | METHOD AND APPARATUS FOR EFFECTING GAS-LIQUID CONTACT | EP91900143.0 | 1990-12-04 | EP0504203A1 | 1992-09-23 | SMITH, James, W.; ELLENOR, David, Todd, Richard; HARBINSON, John, N. |
| Des composants, généralement mais pas exclusivement gazeux, sont ôtés de flux de gaz dans un milieu liquide et convertis chimiquement en une phase insoluble ou physiquement supprimés. Spécifiquement, on peut supprimer du sulfure d'hydrogène de courants gazeux par oxydation dans une solution aqueuse de chélate de métal transitoire se trouvant dans une cellule de flottation agitée modifiée. On décrit également un appareil de contact liquide-gaz, associant généralement un réacteur chimique et un dispositif de séparation de produits solides, et comprenant une cellule de flottation agitée modifiée de ce type. Afin d'effectuer un transfert de matière efficace et une réaction rapide, des bulles de gaz contenant du sulfure d'hydrogène et de l'oxygène sont formées par rotation d'un agitateur à une vitesse à l'extrémité des palettes d'environ 350 pouces/sec afin d'obtenir le cisaillement requis. Pour aider cette réaction, une enveloppe circulaire comporte une pluralité d'ouvertures, ayant généralement un allongement de 1 environ, de diamètre égal et disposées suivant une configuration uniforme de manière à fournir à travers lesdites ouvertures un flux de gaz inférieur à environ 0,02 livre/min/ouverture dans l'enveloppe. En général, l'indice de vitesse du gaz est au moins environ 18 par seconde et par ouverture, mais il est préférable qu'il soit au moins d'environ 24 par seconde et par ouverture. Chacune des ouvertures a une sperficie correspondant à un diamètre inférieur à un pouce environ. | ||||||
| 174 | Flotation machine for de-inking | EP90310514.6 | 1990-09-26 | EP0428257A3 | 1992-08-05 | Iwashige, Naoyuki; Eguchi, Masakazu |
A flotation machine for de-inking waste paper stock comprises a horizontally extending flotation cell (5) defining a reservoir for a stock liquid which forms a free liquid surface in the cell. A froth receptacle (4) extends along the entire length of the cell and receives froth floating up to the liquid surface. At opposite ends of the cell are a stock inlet (1) and a stock outlet (2). Situated within the lower portion of the cell is a rotary air bubble generator (3) which extends between the two ends of the cell with its axis of rotation extending generally horizontally whereby stock liquid introduced through the inlet (1) flows along the length of the cell towards the outlet (2) in at least one spiral flow pattern (11) with a generally horizontal axis. |
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| 175 | CENTRIFUGAL FLOTATION APPARATUS AND METHOD | EP90905260.0 | 1990-03-06 | EP0465527A1 | 1992-01-15 | CAMPBELL, Thomas P. |
| L'unité de bol actionnée par moteur décrite comprend des parois (21) et un arbre tubulaire (4) tourillonné dans une base (1) de l'appareil. Un courant d'air pressurisé est déchargé dans la boue contenue dans l'unité de bol via un réseau circulaire de générateurs de bulles (10). Une turbine (13) décharge la boue vers l'extérieur contre une surface annulaire inclinée vers le haut (18) de l'unité de bol, pour amener la boue à fusionner en montant avec les courants, afin de promouvoir la flottation. La boue contenue dans l'unité de bol forme un tourbillon (V) et la flottation des particules forme une couche d'écume (F) à l'intérieur du tourbillon (V) de boue. L'écume sort de l'unité de bol vers le haut en franchissant une barrière (30) fermant partiellement l'unité de bol. Les particules de gangue plus lourdes sortent par une sortie (29) entourant la périphérie de l'unité de bol. Une enveloppe collectrice (32) est cloisonnée, de façon à recevoir l'écume et le matériau résiduaire plus lourd. Une variante de l'appareil comprend une unité de bol et une turbine mues séparément. | ||||||
| 176 | Flotation machine for de-inking | EP90310514.6 | 1990-09-26 | EP0428257A2 | 1991-05-22 | Iwashige, Naoyuki; Eguchi, Masakazu |
A flotation machine for de-inking waste paper stock comprises a horizontally extending flotation cell (5) defining a reservoir for a stock liquid which forms a free liquid surface in the cell. A froth receptacle (4) extends along the entire length of the cell and receives froth floating up to the liquid surface. At opposite ends of the cell are a stock inlet (1) and a stock outlet (2). Situated within the lower portion of the cell is a rotary air bubble generator (3) which extends between the two ends of the cell with its axis of rotation extending generally horizontally whereby stock liquid introduced through the inlet (1) flows along the length of the cell towards the outlet (2) in at least one spiral flow pattern (11) with a generally horizontal axis. |
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| 177 | PROCESS FOR TREATING CONTAMINATED SOIL | EP89902988.0 | 1989-02-06 | EP0410971A1 | 1991-02-06 | BATESON, George, F.; CHILCOTE, Dennis, D.; MARTINSON, Michael, M.; VALINE, Steven, B.; ZAMBRANO, Adolfo, R. |
| La présente invention décrit un procédé servant à épurer un terraen contaminé par des matières organiques. Le procédé préféré comporte généralement des opérations d'abrasion (35) et de classifications (40) superposées, qui produisent l'extraction et la concentration des fractions fortement contaminées. Le procédé peut également comporter une étape de flottation (60) par laquelle les substances hydrophobes contenues dans le sol sont libérées à une interface avec des boules d'air et sont amenées par flottation au sommet d'une cellule de flottation. Dans les procédés préférés décrits par la présente invention, la terre à traiter est extraite du site contaminé et est broyée en particules relativement fines. Ces particules sont de préférence traitées par des opérations d'abrasion et de classification, destinées à extraire les substances contaminées en fines particules à sédimentation lente, telles que le bois et les fines particules terreuses. Les particules plus grossières isolées qui en résultent sont ensuite traitées par flottation en vue d'une opération de polissage finale. Ledit procédé est particulièrement bien adapté pour être utilisé dans le traitement de terrains contaminés par des huiles organiques et des matières grasses contenant du pentachlorophénol (PCP), qui proviennent par exemple d'installations de traitement du bois ou similaire. | ||||||
| 178 | LIQUID SEPARATOR. | EP88904416 | 1988-06-10 | EP0365537A4 | 1990-06-28 | KALNINS CHARLES MICHAEL |
| PCT No. PCT/AU88/00184 Sec. 371 Date Dec. 8, 1989 Sec. 102(e) Date Dec. 8, 1989 PCT Filed Jun. 10, 1988 PCT Pub. No. WO88/09696 PCT Pub. Date Dec. 15, 1988.A separation system for separating oil and water components of a liquid mixture wherein the oil component is comprised of droplets of a less dense phase in a more dense water phase. The mixture is fed to separation devices including a hydrocyclone for generally reducing the oil in water concentration to less than 500 ppm. The underflow of the hydrocyclone is passed to a downstream flotation device for further separation as by settling, which may be further assisted by liberating gas in the mixture, in the flotation device, to adhere such gas to oil droplets and thereby carry such droplets to the surface of the device. Pressure of fluids leaving the hydrocyclone may be reduced before entering the flotation device. A residence vessel upstream of the hydrocyclone may be provided to precoalese the mixture prior to entering the hydrocyclone. | ||||||
| 179 | Aeration apparatus | EP87311091.0 | 1987-12-16 | EP0272107A3 | 1990-03-14 | Jameson, Graeme John |
Aeration apparatus for use in recovering values from slurries in a flotation cell (10) wherein the impeller (20) has a plurality of generally radial downwardly extending blades on its lower surface, each blade extending from the hollow drive shaft (19) of the rotor to the periphery of the impeller and generally increasing in height radially outwardly along the length of the blade. In the preferred form of the invention a stator (21) is provided having corresponding radial blades located beneath the impeller (20). |
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| 180 | Improved flotation method | EP84307231.5 | 1984-10-19 | EP0146235A2 | 1985-06-26 | Jameson, Graeme J. |
A method of improving the quality of froth removed from a minerals separation flotation cell (1) by providing converging side walls (2) to crowd the froth into a narrower chimney (4) and thereby increase the froth height. The cell is operated so that the pulp/froth interface is positioned to give a froth height to the overflow weir (5) greater than the natural froth height in a similar parallel sided flotation cell. |
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