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公开(公告)号：CA2116248C
公开(公告)日：2004-11-09
申请号：CA2116248
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
Abstract: A reactor for introducing a gas into a fluid comprises a mixing tank (12, 43) for the fluid and a partition means (13, 45) for dividing the tank into at least two chambers (21, 89) and (23, 91). The reactor further comprises a first pump means (14, 47) located in one of the chambers for circulating the fluid downwards in one chamber and then upwards in the other chamber and an aerator assembly (29, 49) for aerating a sidestream of the fluid and introducing the aerated fluid into the tank for mixing the aerated fluid with the circulating fluid in the tank. The aerator assembly (29, 49) comprises a bank of venturi aerators (38, 57) each having an aerator inlet; an aerator outlet; and a constriction intermediate the aerator inlet and the aerator outlet for creating a region of reduced pressure in the fluid, the constriction being elongate in a section transverse to the direction of flow of the fluid through the constriction; and a means for introducing the gas into the constriction to aerate the fluid.
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公开(公告)号：AU5138196A
公开(公告)日：1996-10-23
申请号：AU5138196
申请日：1996-04-04
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER , BATTERHAM ROBIN JOHN , DRY ROD JAMES
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公开(公告)号：CA2217353A1
公开(公告)日：1996-10-10
申请号：CA2217353
申请日：1996-04-04
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER , BATTERHAM ROBIN JOHN , DRY ROD JAMES
IPC: C21C5/32 , C21B11/00 , C21B13/00 , C21C5/28 , C21C7/00 , F27B3/22 , F27D3/18 , C22B5/10 , C22B5/14
Abstract: A method and an apparatus for producing metals and metal alloys from metal oxides in a metallurgical vessel containing a molten bath having a metal layer and a slag layer is disclosed. The method is characterised by injecting a carrier gas and a solid carbonaceous material and/or metal oxides into the molten bath from a side of the vessel that is in contact with the molten bath or from above the molten bath so that the solids penetrate the molten bath and cause molten metal to be projected into the gas space above the molten bath to form a transition zone. The method is also characterised by injecting an oxygen-containing gas into the gas space to post-combust reaction gases released from the molten bath into the transition zone.
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公开(公告)号：AU670594B2
公开(公告)日：1996-07-25
申请号：AU4300593
申请日：1993-06-29
Applicant: TECH RESOURCES PTY LTD
Inventor： CONOCHIE DAVID STEWARD , BATTERHAM ROBIN JOHN , MATTHEWS TERRY ALAN
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公开(公告)号：AU666897B2
公开(公告)日：1996-02-29
申请号：AU3078092
申请日：1992-12-07
Applicant: TECH RESOURCES PTY LTD
Inventor： CONOCHIE DAVID STEWART , BATTERHAM ROBIN JOHN , MATTHEWS TERRY ALAN
IPC: A62D3/00 , A62D3/32 , A62D3/34 , A62D3/38 , A62D101/04 , A62D101/20 , A62D101/22 , B01J10/00 , F23G5/00 , F23G5/027 , F23G7/00 , F23G7/04 , F23G7/05
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Patent Agency Ranking
公开(公告)号：ZA934949B
公开(公告)日：1994-01-31
申请号：ZA934949
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
Abstract: A new aerator for perfusing a fluid with a gas has an inlet, an outlet and a central throat area with reduced cross-section in which the fluid pressure is reduced. The throat area is of elongated shape and is provided with a means for introducing the required gas. Also claimed is the procedure for aerating a fluid using this aerator. Gas is introduced via a row of nozzles or openings (1) or a porous membrane extending around the circumference of the throat area. A number of similar aerators may be used with a common fluid inlet and/or outlet. The flow of fluid is regulated to pass vertically through the throat area at a rate of at least 100 l/min. and preferably more than 200 l/min, and at a velocity of 1 to 10 m/s, and pref. 4 to 10 m/s. The fluid may in particular be an aq. extn. liq. and the gas air. The volumetric flow ratio of air to liquid is at least 0.2, and pref. more than 0.5, and esp. more than 0.7. The gas is introduced under the effect of natrual aspiration or under a slight pressure. USE/ADVANTAGE - Esp. for providing the required oxygen for the bacterial agents in biological extn. liqs. used for the extn. of ores. The aerator is economical to produce and to operate and achieves a high rate of aeration, thus reducing the cost of the aeration process.
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公开(公告)号：DE4224911A1
公开(公告)日：1994-01-13
申请号：DE4224911
申请日：1992-07-28
Applicant: TECH RESOURCES PTY LTD
Abstract: A new aerator for perfusing a fluid with a gas has an inlet, an outlet and a central throat area with reduced cross-section in which the fluid pressure is reduced. The throat area is of elongated shape and is provided with a means for introducing the required gas. Also claimed is the procedure for aerating a fluid using this aerator. Gas is introduced via a row of nozzles or openings (1) or a porous membrane extending around the circumference of the throat area. A number of similar aerators may be used with a common fluid inlet and/or outlet. The flow of fluid is regulated to pass vertically through the throat area at a rate of at least 100 l/min. and preferably more than 200 l/min, and at a velocity of 1 to 10 m/s, and pref. 4 to 10 m/s. The fluid may in particular be an aq. extn. liq. and the gas air. The volumetric flow ratio of air to liquid is at least 0.2, and pref. more than 0.5, and esp. more than 0.7. The gas is introduced under the effect of natrual aspiration or under a slight pressure. USE/ADVANTAGE - Esp. for providing the required oxygen for the bacterial agents in biological extn. liqs. used for the extn. of ores. The aerator is economical to produce and to operate and achieves a high rate of aeration, thus reducing the cost of the aeration process.
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公开(公告)号：FI933415A
公开(公告)日：1993-09-30
申请号：FI933415
申请日：1993-07-30
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN JOHN , HOFFMANN WARWICK ARTHUR , KATSIKAROS NICHOLAS
Abstract: A reactor for aerating a fluid with a gas comprises a mixing tank (12) for the fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inner chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the draft tube (13) for circulating fluid downwardly through the inner chamber (21) and upwardly through the outer chamber (23). The reactor further comprises an external circuit for withdrawing a portion of the fluid from the mixing tank (12), aerating the fluid, and returning the aerated fluid to the mixing tank (12). The aerator is in the form of a venturi device (17).
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公开(公告)号：DE4224912A1
公开(公告)日：1993-06-03
申请号：DE4224912
申请日：1992-07-28
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN JOHN , HOFFMANN WARWICK ARTHUR , KATSIKAROUS NICHOLAS
Abstract: A reactor for aerating a fluid with a gas comprises a mixing tank (12) for the fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inner chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the draft tube (13) for circulating fluid downwardly through the inner chamber (21) and upwardly through the outer chamber (23). The reactor further comprises an external circuit for withdrawing a portion of the fluid from the mixing tank (12), aerating the fluid, and returning the aerated fluid to the mixing tank (12). The aerator is in the form of a venturi device (17).
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公开(公告)号：AU2003229403C1
公开(公告)日：2012-12-20
申请号：AU2003229403
申请日：2003-05-30
Applicant: TECH RESOURCES PTY LTD
Inventor： SHAW RAYMOND WALTER , ESDAILE LUCY , BATTERHAM ROBIN JOHN
Abstract: A method of leaching a metal value from a heap of a metal-containing ore and a heap leaching operation are disclosed. The method includes establishing a downward flow of a leach liquor through a section of the heap by supplying the leach liquor onto a top surface of the section and allowing the leach liquor (containing metal values in solution) to drain from a lower part of the section. The method is characterised by supplying the leach liquor onto the top surface of the section at a flow rate that is sufficient so that the downwardly flowing leach liquor saturates the section of the heap.
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