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    PROCEDIMIENTO DOBLE PARA LA PRODUCCION DE METALES Y ALEACIONES DE METALES A PARTIR DE MENAS DE OXIDOS METALICOS.
    13.
    发明专利
    PROCEDIMIENTO DOBLE PARA LA PRODUCCION DE METALES Y ALEACIONES DE METALES A PARTIR DE MENAS DE OXIDOS METALICOS. 未知

    公开(公告)号：MX9803529A

    公开(公告)日：1998-11-29

    申请号：MX9803529

    申请日：1998-05-04

    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 ,  C21B05/00

    Abstract: La produccion de alimentacion altamente metalizada, un producto intermedio producido solamente por reductores gaseosos en procesos de reduccion de dos etapas de ese tipo, encuentran problemas de flujo, que interfieren con el proceso continuo y con la productividad. Este problema se ha superado explotando un material carbonáceo altamente volátil, tal como carbon mineral, como el agente reductor para que el material de partida de la mena de oxido (parcialmente reducido) en la etapa de pre-reduccion en estado solido de un proceso doble, en el cual la etapa final consiste de fundir, para producir el metal final (aleacion). Los productos intermediarios de la primera etapa son el carbon quemado del carbon mineral, que evita el problema de fluidez, mena parcialmente reducida y Co y H2, que participan en la pre-reduccion. El proceso tiene una aplicacion particular a las menas de hierro, tal como hematita y la magnetita y derivados similares, a saber, menas de cromita y níquel oxidado. Los proceso se pueden extender a uno triple, que incluye el secado, precalentamiento y reduccion parcial en la primera etapa, seguido por reduccion parcial y finalmente la etapa de fundido. La planta para el proceso puede consistir de un horno de lanza o lecho fluidizado para la secuencia de pre-reduccion, preferiblemente lo ultimo. Para el proceso triple, se prefieren dos lechos (3, 5) fluidizados asociados. Cualquier horno adecuado (7) se puede usar para fundir, en tanto esté ocupado para la inyeccion de mena parcialmente reducida, el carbon quemado y los componentes fundidos, la lanza de aire caliente, gas de salida y la eliminacion de metal y escoria fundida. La etapa final de la reduccion en estado solido tiene lugar a una temperatura de al menos 550 degree C, preferiblemente 750-900 degree C. Al menos 50% de la metalizacion es esencial para el procesamiento satisfactorio, preferiblemente al menos 80%.

    16.
    发明专利
    未知

    公开(公告)号：BR9604837A

    公开(公告)日：1998-06-16

    申请号：BR9604837

    申请日：1996-04-04

    Applicant: TECH RESOURCES PTY LTD

    Inventor： DRY ROD JAMES ,  BATTERHAM ROBIN JOHN ,  INNES JOHN ALEXANDER

    IPC: C21C5/32 ,  C21B11/00 ,  C21B13/00 ,  C21C5/28 ,  C21C7/00 ,  F27B3/22 ,  F27D3/18

    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.

    REDUCING IRON OXIDES IN ROTARY HEARTH FURNACE
    17.
    发明专利
    REDUCING IRON OXIDES IN ROTARY HEARTH FURNACE 未知

    公开(公告)号：CA2228842C

    公开(公告)日：2008-04-01

    申请号：CA2228842

    申请日：1996-08-07

    Applicant: TECH RESOURCES PTY LTD

    Inventor： INNES JOHN ALEXANDER

    IPC: C21B13/08 ,  C22B1/16 ,  C21B13/10 ,  C22B1/14 ,  C22B1/216 ,  C22B1/24 ,  C22B5/10

    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) a mixture of iron ore fines and (b) micro-agglomerates of iron ore fines. The mixture is 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 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.

    DUPLEX PROCEDURE FOR THE PRODUCTION OF METALS AND METAL ALLOYS FROM OXIDIC METAL ORES
    18.
    发明专利
    DUPLEX PROCEDURE FOR THE PRODUCTION OF METALS AND METAL ALLOYS FROM OXIDIC METAL ORES 未知

    公开(公告)号：CA2236587C

    公开(公告)日：2007-08-07

    申请号：CA2236587

    申请日：1996-11-04

    Applicant: TECH RESOURCES PTY LTD

    Inventor： DRY RODNEY JAMES ,  INNES JOHN ALEXANDER

    IPC: C22B1/00 ,  C22B5/18 ,  C21B5/00 ,  C21B7/00 ,  C21B7/14 ,  C21B7/16 ,  C21B11/00 ,  C21B11/02 ,  C21B13/00 ,  C21B13/02 ,  C21B13/14 ,  C22B5/10 ,  C22B5/14 ,  F27B1/10 ,  F27B1/16 ,  F27B1/20 ,  F27B1/21 ,  F27B15/08 ,  F27B15/09 ,  F27B19/04

    Abstract: The production of highly metallised 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. Plant for the process may consist of a shaft furnace or fluidised bed for the prereduction sequence, preferably the latter. For the triplex process, two associated fluidised beds (3, 5) are preferred. Any suitable furnace (7) may be used for smelting, as long as it is equipped for the injection of partially reduced ore, char and fluxes, hot air lancing, off gas and the tapping of molten metal and slag. The final stage of solid state reduction takes place at a temperature of at least 550 .degree.C, preferably 750-900 .degree.C. At least 50 % of metallisation is essential for satisfactory processing, preferably at least 80 %.

    19.
    发明专利
    未知

    公开(公告)号：ES2192609T3

    公开(公告)日：2003-10-16

    申请号：ES96925608

    申请日：1996-08-07

    Applicant: TECH RESOURCES PTY LTD

    Inventor： INNES JOHN ALEXANDER

    IPC: C22B1/16 ,  C21B13/08 ,  C21B13/10 ,  C22B1/14 ,  C22B1/216 ,  C22B1/24 ,  C22B5/10

    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.

    A method of producing metals and metal alloys
    20.
    发明专利
    A method of producing metals and metal alloys 未知

    公开(公告)号：IN190911B

    公开(公告)日：2003-08-30

    申请号：IN625CA1996

    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 ,  C21B15/00 ,  C21C5/48

    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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