公开(公告)号：ZA200209781B

公开(公告)日：2003-08-19

申请号：ZA200209781

申请日：2002-12-03

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES

IPC: C21B11/08 ,  C21B13/00 ,  C21B13/10 ,  F27B3/18 ,  F27D3/18 ,  C21B

Abstract: A direct smelting process for producing iron and/or ferroalloys is provided, which involves injecting feed materials into a molten bath of molten metal in a metallurgical vessel to form an expanded molten bath zone, and injecting oxygen containing gas, wherein the selection of the number of, and position of, the solids injection and oxygen gas injection lances is such that the expanded molten bath zone includes a raised region around the oxygen gas injection region, and such that splashes, droplets and streams of molten material project upwardly from the raised region, and such that a free space forms around a lower end of the oxygen gas injection lance.

公开(公告)号：BR0013006A

公开(公告)日：2002-04-30

申请号：BR0013006

申请日：2000-08-07

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES

IPC: C21B13/10 ,  C21B11/00 ,  C21B11/02 ,  C21B13/00 ,  C21B13/14

Abstract: A process for direct smelting metalliferous feed material is disclosed. Iron oxides are partially reduced in a solid state in a pre-reduction vessel. The partially reduced iron oxides are smelted to molten iron in a direct smelting vessel which contains a molten bath of iron and slag and is supplied with a solid carbonaceous material as a source of reductant and energy and with an oxygen-containing gas for post-combusting carbon monoxide and hydrogen generated in the vessel. The direct smelting step generates an off-gas that contains sulphur and the off-gas is released from the direct smelting vessel. Part only of the off-gas released from the direct smelting vessel is used in the pre-reduction step to pre-reduce iron oxides in the pre-reduction vessel. Part only of the off-gas is used in the pre-reduction step in order to control the amount of sulphur that is returned with the partially reduced iron oxides to the direct smelting vessel.

公开(公告)号：AU8737101A

公开(公告)日：2002-04-02

申请号：AU8737101

申请日：2001-09-13

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES ,  BATES CECIL PETER

IPC: C21B11/08 ,  C21B13/10

公开(公告)号：CA2422905A1

公开(公告)日：2002-03-28

申请号：CA2422905

申请日：2001-09-13

Applicant: TECH RESOURCES PTY LTD

Inventor： BATES CECIL PETER ,  DRY RODNEY JAMES

IPC: C21B11/08 ,  C21B11/00 ,  C21B13/00 ,  F27B3/18 ,  F27B3/22 ,  F27D3/16 ,  F27D3/18 ,  C21B13/10

Abstract: A direct smelting process for producing iron and/or ferroalloys is disclosed . The process operates on a commercial scale in a metallurgical vessel that ha s a hearth, side walls, and a roof, and a minimum width dimension of the interior of the hearth of at least 4 meters. The process is a molten bath- based process and includes supplying ferruginous material, carbonaceous material, and fluxes into the vessel and smelting ferruginous feed material to molten metal in the molten bath and generating gases in the bath. The proces s also includes injecting jets of oxygen-containing gas being air or air with up to 50% oxygen through 3 or more lances into a space above the quiescent surface of the molten bath (the "top space") and combusting gases generated in the process and generating upward movement of molten material from the molte n bath into the top space to facilitate heat transfer to the bath and to minimise heat loss from the vessel. The process is characterised by entraini ng a volume of top space gas into the jets of oxygen-containing gas injected in to the vessel that is 2-6 times the volume of the injected gas.

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.

公开(公告)号：AU7222301A

公开(公告)日：2002-02-05

申请号：AU7222301

申请日：2001-07-19

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES

IPC: C21B11/08 ,  C21B13/10

公开(公告)号：AU4815601A

公开(公告)日：2001-11-07

申请号：AU4815601

申请日：2001-04-11

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES ,  BURKE PETER DAMIAN

IPC: C22B5/00 ,  C21B11/00 ,  C21B11/02 ,  C21B13/00

Abstract: A molten-bath based direct smelting process and apparatus for producing metals from a ferrous material is disclosed. The process includes injecting feed materials being solid material and carrier gas into a molten bath at a velocity of at least 40 m/s through at least one downwardly extending solids injection lance having a delivery tube of internal diameter of 40-200 mm that is located so that a central axis of an outlet end of the lance is at an angle of 20 to 90 degrees to a horizontal axis. The feed materials injection generates a superficial gas flow of at least 0.04 Nm 3 /s/m 2 within the molten bath at least in part by reactions of injected material in the bath. The gas now causes molten material to be projected upwardly as splashes, droplets and streams and form an expanded molten bath zone, with the gas flow and the upwardly projected molten material causing substantial movement of material within the molten bath and strong mixing of the molten bath. The feed materials are selected so that, in an overall sense, the reactions of the feed materials in the molten bath are endothermic. The process also includes injecting an oxygen-containing gas into an upper region of the vessel via at least one oxygen gas injection lance and post-combusting combustible gases released from the molten bath.

公开(公告)号：CZ20001100A3

公开(公告)日：2001-07-11

申请号：CZ20001100

申请日：1998-09-23

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES

IPC: C21B11/00 ,  C21B11/02 ,  C21B13/00 ,  C21B13/04 ,  C22B5/10

Abstract: A molten bath-based direct smelting process for producing metals from metal oxides (including partially reduced metal oxides) is disclosed. The process includes causing upward movement of splashes, droplets, and streams of molten material from a metal layer (15) of the molten bath which: (i) promotes strong mixing of metal in a slag layer (16) of the molten bath so that the slag layer (16) is maintained in a strongly reducing condition leading to FeO levels below 8 wt % based on the total weight of the slag in the slag layer (16); and (ii) extends into a space above a nominal quiescent surface of the molten bath to form a transition zone (23).

公开(公告)号：BR9912397A

公开(公告)日：2001-04-24

申请号：BR9912397

申请日：1999-07-26

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES

IPC: C21B9/00 ,  C21B11/08 ,  C21B13/00 ,  C21B13/14 ,  C21C5/56 ,  C22B5/10 ,  C22B1/04 ,  C22B1/10 ,  C22B1/00

Abstract: A process for direct smelting a metalliferous feed material is disclosed. The process includes the steps of partially reducing metalliferous feed material and substantially devolatilising coal in a pre-reduction vessel and producing a partially reduced metalliferous feed material and char. The process also includes direct smelting the partially reduced metalliferous feed material to molten metal in a direct smelting vessel using the char as a source of energy and as a reductant and post-combusting reaction gas produced in the direct smelting process with pre-heated air or oxygen-enriched air to a post-combustion level of greater than 70% to generate heat required for the direct smelting reactions and to maintain the metal in a molten state.

公开(公告)号：AU6254400A

公开(公告)日：2001-03-05

申请号：AU6254400

申请日：2000-08-07

Applicant: TECH RESOURCES PTY LTD

Inventor： DRY RODNEY JAMES

IPC: C21B13/10 ,  C21B11/00 ,  C21B11/02 ,  C21B13/00 ,  C21B13/14

Abstract: A process for direct smelting metalliferous feed material is disclosed. Iron oxides are partially reduced in a solid state in a pre-reduction vessel. The partially reduced iron oxides are smelted to molten iron in a direct smelting vessel which contains a molten bath of iron and slag and is supplied with a solid carbonaceous material as a source of reductant and energy and with an oxygen-containing gas for post-combusting carbon monoxide and hydrogen generated in the vessel. The direct smelting step generates an off-gas that contains sulphur and the off-gas is released from the direct smelting vessel. Part only of the off-gas released from the direct smelting vessel is used in the pre-reduction step to pre-reduce iron oxides in the pre-reduction vessel. Part only of the off-gas is used in the pre-reduction step in order to control the amount of sulphur that is returned with the partially reduced iron oxides to the direct smelting vessel.