公开(公告)号：MX9801055A

公开(公告)日：1998-05-31

申请号：MX9801055

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: Se describe un proceso para reducir por lo menos parcialmente oxidos de hierro, que comprende la formacion de un lecho de reactivos sobre un hogar de un horno de hogar giratorio, los reactivos comprenden: (a) una mezcla de finos de mineral de hierro y material carbonáceo en partículas y/o (b) microaglomerados de finos de mineral de hierro y material carbonáceo en partículas. La mezcla y/o los microaglomerados se calientan en el horno de hogar giratorio, para por lo menos reducir los oxidos de hierro. Los "microaglomerados" son aglomerados que son menores de 1400 micras (y de preferencia más de 500 micras) de diámetro. El producto, por lo menos parcialmente reducido, se utiliza de preferencia en la produccion de hierro metálico. También se describe un aparato para reducir por lo menos parcialmente oxidos de hierro. El proceso permite la operacion del horno de hogar giratorio sin requerir el empastillado de los finos de oxido de hierro y carbon.

公开(公告)号：ZA9609203B

公开(公告)日：1997-05-29

申请号：ZA9609203

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

CPC classification number: F27B19/04 ,  C21B13/143 ,  C21B2100/60 ,  C21B2100/64 ,  Y02P10/136

公开(公告)号：CA2236587A1

公开(公告)日：1997-05-15

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 ,  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 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 ~C, preferably 750-900 ~C. At least 50 % of metallisation is essential for satisfactory processing, preferably at least 80 %.

公开(公告)号：ZA962795B

公开(公告)日：1996-10-11

申请号：ZA962795

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 ,  C21B ,  C22B

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.