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公开(公告)号：AT232243T
公开(公告)日：2003-02-15
申请号：AT96925608
申请日：1996-08-07
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
Abstract: PCT No. PCT/AU96/00496 Sec. 371 Date Jun. 5, 1998 Sec. 102(e) Date Jun. 5, 1998 PCT Filed Aug. 7, 1996 PCT Pub. No. WO97/06281 PCT Pub. Date Feb. 20, 1997A process for at least partially reducing iron oxides comprises forming a bed of reactants on a hearth of a rotary hearth furnace, the reactants comprising (a) mixture of iron ore fines and particulate carbonaceous material and/or (b) micro-agglomerates of iron ore fines and particulate carbonaceous material. The mixture and/or the micro-agglomerates are heated in the rotary hearth furnace to at least reduce the iron oxides. The "micro-agglomerates" are agglomerates that are less than 1400 microns (and preferably more than 500 microns) in diameter. The at least partially reduced product is preferably used in the production of metallic iron. An apparatus for at least partially reducing iron oxides is also claimed. The process permits operation of the rotary hearth furnace without requiring pelletisation of iron oxides fines and coal.
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公开(公告)号：AT229082T
公开(公告)日：2002-12-15
申请号：AT96907949
申请日：1996-04-04
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER , BATTERHAM ROBIN JOHN , DRY ROD JAMES
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 characterized 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 characterized 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：GB2335441B
公开(公告)日：2000-11-15
申请号：GB9914070
申请日：1997-12-17
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
Abstract: A method of producing metals and metal alloys from metal oxides is disclosed. The method comprises the steps of: (a) passing a gas at an elevated temperature through a bed of composite agglomerates that are formed from metal oxides and solid carbonaceous material and thereby reducing metal oxides in the agglomerates to metal and melting the metal; and (b) collecting the molten metal from the agglomerates.
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公开(公告)号：ZA9711352B
公开(公告)日：1998-07-08
申请号：ZA9711352
申请日：1997-12-17
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
Abstract: A method of producing metals and metal alloys from metal oxides is disclosed. The method comprises the steps of: (a) passing a gas at an elevated temperature through a bed of composite agglomerates that are formed from metal oxides and solid carbonaceous material and thereby reducing metal oxides in the agglomerates to metal and melting the metal; and (b) collecting the molten metal from the agglomerates.
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公开(公告)号：AR001571A1
公开(公告)日：1997-11-26
申请号：AR33609496
申请日：1996-04-09
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 , C21C5/35 , C21C5/56
Abstract: Se revelan un método y un aparato para producir metales y aleaciones de metales en un recipiente metalúrgico que contiene un bano de fusión que tieneuna capa de metal y una capa de escoria. El método está caracterizado por la inyección de ung as portador y un material carbonáceo sólido y/u óxidos demetales en el bano de fusión desde un lado del recipiente que está en contacto con el bano de fusión o desde arriba del bano de fusión, de tal modo que lossólidos penetran en el bano defusión y hacen que el metal fundido sea proyectado al espacio de gas por encima del bano de fusión para formar una zonade transición. El método también está caracterizado por la inyección de un gas que contiene oxígeno en el espacio de gaspara r ealizar la combustión posteriorde los gases de reacción liberados por el bano de fusión a la zona de transición.
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Patent Agency Ranking
公开(公告)号：ZA969203B
公开(公告)日：1997-05-29
申请号：ZA969203
申请日：1996-11-01
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER , DRY RODNEY JAMES
IPC: C22B1/00 , C21B5/00 , C21B7/00 , C21B7/14 , C21B7/16 , C21B11/00 , C21B11/02 , C21B13/00 , C21B13/02 , C21B13/14 , C22B5/10 , C22B5/14 , C22B5/18 , F27B1/10 , F27B1/16 , F27B1/20 , F27B1/21 , F27B15/08 , F27B15/09 , F27B19/04 , C22B
Abstract: The production of highly metallized feed, an intermediate product produced solely by gaseous reductants in two stage reduction processes of that kind, encounters sticking problems, which interfere with continuous processing and productivity. This problem has been overcome by exploiting a high volatile carbonaceous material, such as coal, as the reducing agent for the (partially reduced) oxide ore starting material in the solid state prereduction stage of a duplex process, in which the final stage consists of smelting, to produce the final metal (alloy). Intermediate products of the first stage are char from the coal, which avoids the sticking problem, partially reduced ore and CO and H2, which participate in the prereduction. The process has particular application to iron ores, such as haematite and magnetite and similar derivatives, namely, chromite and oxidic nickel ores. The process may be extended to a triplex, which includes drying, preheating and partial reduction in the first stage, followed by further partial reduction and finally the smelting step. The final stage of solid state reduction takes place at a temperature of at least 550° C., preferably 750-900° C. At least 50% of metallization is essential for satisfactory processing, preferably at least 80%.
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公开(公告)号：CA2228842A1
公开(公告)日：1997-02-20
申请号：CA2228842
申请日：1996-08-07
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
Abstract: A process for at least partially reducing iron oxides comprises forming a bed of reactants on a hearth of a rotary hearth furnace, the reactants comprising (a) mixture of iron ore fines and particulate carbonaceous material and/or (b) micro-agglomerates of iron ore fines and particulate carbonaceous material. The mixture and/or the micro-agglomerates are heated in the rotary hearth furnace to at least reduce the iron oxides. The "micro-agglomerates" are agglomerates that are less than 1400 microns (and preferably more than 500 microns) in diameter. The at least partially reduced product is preferably used in the production of metallic iron. An apparatus for at least partially reducing iron oxides is also claimed. The process permits operation of the rotary hearth furnace without requiring pelletisation of iron oxide fines and coal.
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公开(公告)号：ZA9606697B
公开(公告)日：1997-02-18
申请号：ZA9606697
申请日：1996-08-07
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
CPC classification number: C22B1/2406 , C21B13/08 , C21B13/105 , C22B5/10 , Y10S75/961
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公开(公告)号：ES2191092T3
公开(公告)日：2003-09-01
申请号：ES96907949
申请日：1996-04-04
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER , BATTERHAM ROBIN JOHN , DRY ROD JAMES
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 characterized 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 characterized 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：DE19782202T1
公开(公告)日：1999-11-18
申请号：DE19782202
申请日：1997-12-17
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
Abstract: A method of producing metals and metal alloys from metal oxides is disclosed. The method comprises the steps of: (a) passing a gas at an elevated temperature through a bed of composite agglomerates that are formed from metal oxides and solid carbonaceous material and thereby reducing metal oxides in the agglomerates to metal and melting the metal; and (b) collecting the molten metal from the agglomerates.
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