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公开(公告)号：BR9609965A
公开(公告)日：1999-02-02
申请号：BR9609965
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：MX9707671A
公开(公告)日：1997-11-29
申请号：MX9707671
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 , C21C05/32 , F27D03/18
Abstract: Se describe un método y aparato para producir metales y aleaciones de metal a partir de oxidos de metal en un recipiente metalurgico que contiene un baño fundido que tiene una capa de metal y una capa de escoria. El método está caracterizado por la inyeccion de un gas portador y un material carbonáceo solido y/u oxidos de metal al baño fundido desde un lado del recipiente que está en contacto con el baño fundido o desde arriba del baño fundido, de tal manera que los solidos penetran al baño fundido y provocan que el metal fundido sea proyectado al espacio de gas y por encima del baño fundido para formar una zona de transicion. El método también está caracterizado por la inyeccion de un gas que contiene oxígeno al espacio de gas para postquemar los gases de reaccion liberados del baño fundido a la zona de transicion.
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公开(公告)号：AU7269596A
公开(公告)日：1997-05-29
申请号：AU7269596
申请日：1996-11-04
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
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：ZA966697B
公开(公告)日：1997-02-18
申请号：ZA966697
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：ZA9602795B
公开(公告)日：1996-10-11
申请号：ZA9602795
申请日：1996-04-09
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER , BATTERHAM ROBIN JOHN , DRY ROD JAMES
CPC classification number: F27B3/225 , C21B13/0013 , C21B13/0026 , C21C5/28 , C21C7/0037 , F27D3/18 , Y02P10/136
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Patent Agency Ranking
公开(公告)号：IN190083B
公开(公告)日：2003-06-07
申请号：IN1418CA1996
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：CA2217353C
公开(公告)日：2002-12-03
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 lay er 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 bat h or from above the molten bath so that the solids penetrate the molten bath a nd 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：AU7239600A
公开(公告)日：2002-06-27
申请号：AU7239600
申请日：2000-12-20
Applicant: TECH RESOURCES PTY LTD
Inventor： INNES JOHN ALEXANDER
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公开(公告)号：DE19782202C2
公开(公告)日：2002-01-31
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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公开(公告)号：BR9611484A
公开(公告)日：1999-02-02
申请号：BR9611484
申请日：1996-11-04
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , INNES JOHN ALEXANDER
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
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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