公开(公告)号：DE69925135D1

公开(公告)日：2005-06-09

申请号：DE69925135

申请日：1999-07-01

Applicant: TECH RESOURCES PTY LTD

Inventor： WEBER GOTTFRIED DI ,  LEIGH JOHN ,  BURKE DAMIAN ,  BATES PETER

IPC: C22B5/10 ,  C21B11/00 ,  C21B11/08 ,  C21B13/00 ,  C21B13/10 ,  C21C5/56 ,  F27B3/08 ,  F27B3/19 ,  F27B3/22 ,  F27D1/12 ,  F27D3/15 ,  F27D3/18 ,  C21B11/02

Abstract: A vessel which produces metal from a metalliferous feed material by a direct smelting process is disclosed. The vessel contains a molten bath having a metal layer (15) and a slag layer (16) on the metal layer and has a gas continuous space (31) above the slag layer. The vessel includes a hearth formed of refractory material having a base (3) and sides (55) in contact with the molten metal and side walls (5) which extend upwardly from the sides (55) of the hearth and are in contact with the slag layer and the gas continuous space. The side walls that contact the gas continuous space include water cooled panels (57) and a layer of slag on the panels. The vessel also includes one or more than one lance/tuyere (13) extending downwardly into the vessel and injecting an oxygen-containing gas into the vessel above the metal layer and a plurality of lances/tuyeres (11) injecting at least part of the metalliferous feed material and a carbonaceous material with a carrier gas into the molten bath so as to penetrate the metal layer.

公开(公告)号：DE69925135T2

公开(公告)日：2006-03-02

申请号：DE69925135

申请日：1999-07-01

Applicant: TECH RESOURCES PTY LTD

Inventor： WEBER GOTTFRIED DI ,  LEIGH JOHN ,  BURKE DAMIAN ,  BATES PETER

IPC: C22B5/10 ,  C21B11/00 ,  C21B11/02 ,  C21B11/08 ,  C21B13/00 ,  C21B13/10 ,  C21C5/56 ,  F27B3/08 ,  F27B3/19 ,  F27B3/22 ,  F27D1/12 ,  F27D3/15 ,  F27D3/18

Abstract: A vessel which produces metal from a metalliferous feed material by a direct smelting process is disclosed. The vessel contains a molten bath having a metal layer (15) and a slag layer (16) on the metal layer and has a gas continuous space (31) above the slag layer. The vessel includes a hearth formed of refractory material having a base (3) and sides (55) in contact with the molten metal and side walls (5) which extend upwardly from the sides (55) of the hearth and are in contact with the slag layer and the gas continuous space. The side walls that contact the gas continuous space include water cooled panels (57) and a layer of slag on the panels. The vessel also includes one or more than one lance/tuyere (13) extending downwardly into the vessel and injecting an oxygen-containing gas into the vessel above the metal layer and a plurality of lances/tuyeres (11) injecting at least part of the metalliferous feed material and a carbonaceous material with a carrier gas into the molten bath so as to penetrate the metal layer.

公开(公告)号：DE69927273T2

公开(公告)日：2006-01-12

申请号：DE69927273

申请日：1999-07-01

Applicant: TECH RESOURCES PTY LTD

Inventor： MCCARTHY CAROLYN ,  DRY JAMES ,  BURKE DAMIAN

IPC: C22B5/10 ,  C21B11/00 ,  C21B13/00 ,  C21C5/56 ,  C22B5/00

Abstract: A direct smelting process for producing metals from a metalliferous feed material is disclosed. The process includes forming a molten bath having a metal layer (15) and a slag layer (16) on the metal layer in a metallurgical vessel, injecting metalliferous feed material and solid carbonaceous material into the metal layer via a plurality of lances/tuyeres (11), and smelting metalliferous material to metal in the metal layer. The process also includes causing molten material to be projected as splashes, droplets, and streams into a top space above a nominal quiescent surface of the molten bath to form a transition zone (23). The process also includes injecting an oxygen-containing gas into the vessel via one or more than one lance/tuyere (13) to post-combust reaction gases released from the molten bath, whereby the ascending and thereafter descending splashes, droplets and streams of molten material in the transition zone facilitate heat transfer to the molten bath, and whereby the transition zone minimises heat loss from the vessel via the side walls in contact with the transition zone. The process is characterised by controlling the process by maintaining a high slag inventory.

公开(公告)号：DE69927273D1

公开(公告)日：2005-10-20

申请号：DE69927273

申请日：1999-07-01

Applicant: TECH RESOURCES PTY LTD

Inventor： MCCARTHY CAROLYN ,  DRY JAMES ,  BURKE DAMIAN

IPC: C22B5/10 ,  C21B11/00 ,  C21B13/00 ,  C21C5/56 ,  C22B5/00

Abstract: A direct smelting process for producing metals from a metalliferous feed material is disclosed. The process includes forming a molten bath having a metal layer (15) and a slag layer (16) on the metal layer in a metallurgical vessel, injecting metalliferous feed material and solid carbonaceous material into the metal layer via a plurality of lances/tuyeres (11), and smelting metalliferous material to metal in the metal layer. The process also includes causing molten material to be projected as splashes, droplets, and streams into a top space above a nominal quiescent surface of the molten bath to form a transition zone (23). The process also includes injecting an oxygen-containing gas into the vessel via one or more than one lance/tuyere (13) to post-combust reaction gases released from the molten bath, whereby the ascending and thereafter descending splashes, droplets and streams of molten material in the transition zone facilitate heat transfer to the molten bath, and whereby the transition zone minimises heat loss from the vessel via the side walls in contact with the transition zone. The process is characterised by controlling the process by maintaining a high slag inventory.