公开(公告)号：AU768223B2

公开(公告)日：2003-12-04

申请号：AU5840299

申请日：1999-09-03

Applicant: TECH RESOURCES PTY LTD

Inventor： MCCARTHY CAROLYN ANNE ,  DRY RODNEY JAMES ,  GOLDSWORTHY TARA ELLEN

IPC: C21B11/00 ,  C21B11/02 ,  C22B5/10 ,  C22B5/12 ,  F27B19/02 ,  F27B19/04

公开(公告)号：CZ2001764A3

公开(公告)日：2002-02-13

申请号：CZ2001764

申请日：1999-09-03

Applicant: TECH RESOURCES PTY LTD

Inventor： MCCARTHY CAROLYN ANNE ,  DRY RODNEY JAMES ,  GOLDSWORTHY TARA ELLEN

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 ,  C22B5/12 ,  F27B19/04

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 into the metal layer via lances/tuyeres, and oxygen-containing gas is injected into the top space above the molten bath and post-combusts reaction gases released 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 characterized 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 thereby extending the effective length of the lance/tuyere or the lances/tuyeres.