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公开(公告)号:CA2341898A1
公开(公告)日:2000-03-16
申请号:CA2341898
申请日:1999-09-03
Applicant: TECH RESOURCES PTY LTD
Inventor: GOLDSWORTHY TARA ELLEN , DRY RODNEY JAMES , MCCARTHY CAROLYN ANNE
IPC: C21B11/00 , C21B13/00 , C21B13/02 , C21C5/28 , C21C5/46 , C21C5/56 , C21C7/00 , C22B5/10 , F27B3/04 , F27B3/08 , F27B3/19 , F27B3/22 , F27B19/02 , F27D3/00 , F27D3/18 , F27D9/00 , C21B11/02 , F27B19/04 , C22B5/12
Abstract: A direct smelting process for producing metal from a metalliferous feed material is disclosed. The direct smelting process is a molten bath-based process in which smelting occurs predominantly in the metal layer, carrier gas/metalliferous feed material/solid carbonaceous material are injected int o the metal layer via lances/tuyeres, and oxygen-containing gas is injected in to the top space above the molten bath and post-combusts reaction gases release d from the bath. The injection of metalliferous feed material and solid carbonaceous material causes molten material to be projected from the molten bath as splashes, droplets and streams and to form a transition zone. The process is characterised by forming a pipe of a solid material on an outlet end of at least one lance/tuyere while injecting the metalliferous feed material and the carbonaceous material through the lances/tuyeres and thereb y extending the effective length of the lance/tuyere or the lances/tuyeres.
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公开(公告)号:NO991583A
公开(公告)日:1999-05-26
申请号:NO991583
申请日:1999-03-30
Applicant: TECH RESOURCES PTY LTD
Inventor: DRY RODNEY JAMES
CPC classification number: C21B13/14 , C22B1/00 , C22B5/12 , C22B5/18 , Y02P10/136 , Y02P10/143
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公开(公告)号:AU9147798A
公开(公告)日:1999-04-23
申请号:AU9147798
申请日:1998-09-23
Applicant: TECH RESOURCES PTY LTD
Inventor: DRY RODNEY JAMES
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公开(公告)号:CA2304618A1
公开(公告)日:1999-04-08
申请号:CA2304618
申请日:1998-09-23
Applicant: TECH RESOURCES PTY LTD
Inventor: DRY RODNEY JAMES
Abstract: The HIsmelt process as disclosed in WO 96/31627 A1 (PCT/AU96/00197) consists of forming a molten bath of iron and slag, injecting metalliferous feed (oxides), solid carbonaceous material (coal and/or coke) and slag formers into the bath and smelting the metalliferous feed to metal. The process also consists of post-combusting the unoxidised reaction gases and transferring the generated heat to the bath to facilitate the smelting. In addition, a transition zone between the post-combustion zone and the quiescent metal zone is formed by injecting the charge together with a carrier gas into the bath, thus causing the metal and slag to be projected into the transition zone. The present application constitutes an improvement over the afore-mentioned application, in that lances/tuyères are inserted deep into the melt to provide oxygen for post-combustion of the unoxidised reaction gases and, in addition, to project splashes, droplets and streams of molten metal into the transition zone, which, in turn, fall back into the bath, thus effectively transferring heat from the post-combustion zone to the molten bath. The level of dissolved carbon in the bath is maintained at 3 %, preferably > 4 %. The FeO level in the slag is maintained at 40 %, preferably > 50 % or > 60 %.
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175.
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%.
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公开(公告)号:CA2857684C
公开(公告)日:2021-05-04
申请号:CA2857684
申请日:2012-12-06
Applicant: TECH RESOURCES PTY LTD
Inventor: PILOTE JACQUES , DRY RODNEY JAMES , MEIJER HENDRIKUS KOENRAAD ALBERTUS
IPC: C21B5/00 , C21B7/00 , C21B11/00 , C21B13/00 , C21C5/00 , C22B5/00 , F27B1/00 , F27B5/00 , F27B7/20 , F27B9/30 , F27B14/08 , F27D3/00 , F27D13/00
Abstract: A method of starting a smelting process in a smelting vessel includes heating frozen slag and forming molten slag and draining molten slag from a forehearth connection via a forehearth and establishing a clear flow path through the forehearth connection and thereafter hot starting the smelting process.
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公开(公告)号:CA2858176C
公开(公告)日:2021-03-09
申请号:CA2858176
申请日:2012-12-06
Applicant: TECH RESOURCES PTY LTD
Inventor: PILOTE JACQUES , DRY RODNEY JAMES , MEIJER HENDRIKUS KOENRAAD ALBERTUS
Abstract: A method of starting a molten-bath based melting process includes establishing a sufficiently large and stable "hot zone" by inserting an external ignition source for ignition of oxygen and coal in a main chamber of a smelting vessel by independent means, i.e. independently of and before supplying cold oxygen and coal into the main chamber.
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公开(公告)号:CA2826469C
公开(公告)日:2021-01-05
申请号:CA2826469
申请日:2012-02-09
Applicant: TECH RESOURCES PTY LTD
Inventor: DRY RODNEY JAMES
IPC: C21B13/00
Abstract: A molten bath-based process for direct smelting metalliferous material and producing molten metal in a direct smelting vessel that contains a molten bath that has a metal layer that is at least 900 mm deep. The process includes selecting operating parameters of the process so that feed material (solid material and carrier gas) is injected from above the metal layer into the metal layer via at least one solids injection lance with sufficient momentum to penetrate to a depth of at least 100 mm below a nominal quiescent surface of the metal layer to cause upward movement of molten material and gas from the metal layer.
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公开(公告)号:CA2811123C
公开(公告)日:2018-06-26
申请号:CA2811123
申请日:2011-09-15
Applicant: TECH RESOURCES PTY LTD
Inventor: DRY RODNEY JAMES , PILOTE JACQUES
Abstract: A molten bath-based direct smelting process includes controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise in an operating temperature range for the process.
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公开(公告)号:RU2630155C2
公开(公告)日:2017-09-05
申请号:RU2014124752
申请日:2012-12-06
Applicant: TECH RESOURCES PTY LTD
Inventor: PILOTE JACQUES , DRY RODNEY JAMES , MEIJER HENDRIKUS KOENRAAD ALBERTUS
IPC: C21B13/00
Abstract: Изобретениеотноситсяк способузапускаилиперезапускаплавильногопроцессав плавильномсосуде. Плавильныйсосудсодержитосновнуюкамерудляплавленияметаллосодержащегоматериалаи производстварасплавленногометаллаи копильник, соединенныйс основнойплавильнойкамеройчерезсоединительныйэлементкопильника. Приэтомв плавильномсосудесодержитсязастывшийшлак, перекрывающий, поменьшеймере, соединительныйэлементкопильника. Способвключаетнагреваниезастывшегошлака, образованиерасплавленногошлака, отведениерасплавленногошлакаизсоединительногоэлементакопильникачерезкопильники созданиесвободногопрохожденияпотокачерезсоединительныйэлементкопильника. Послеэтогоосуществляютгорячийзапускплавильногопроцессапосредствомпоследовательныхэтапов, включающихподачузагрузочногорасплавленногометаллав основнуюкамеручерезсоединительныйэлементкопильника, подачузагрузочныхматериаловв процесс, плавлениеметаллосодержащегоматериалаи производстворасплавленногометалла. 8 з.п. ф-лы, 5 ил.
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