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公开(公告)号：AT258996T
公开(公告)日：2004-02-15
申请号：AT99932560
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.
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公开(公告)号：BR0113971A
公开(公告)日：2003-07-29
申请号：BR0113971
申请日：2001-09-13
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , BATES CECIL PETER
Abstract: A direct smelting process for producing iron and/or ferroalloys is provided, which involves forming a molten bath in a metallurgical vessel, supplying feed materials, injecting oxygen containing gas, generating upward movement of the molten material from the molten bath, wherein the oxygen-containing gas is injected by three or more lances, and entraining into the jets of oxygen containing gas a volume of top space gas that is 2-6 times the volume of the injected gas.
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公开(公告)号：BR0112657A
公开(公告)日：2003-06-24
申请号：BR0112657
申请日：2001-07-19
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES
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.
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公开(公告)号：ZA200200761B
公开(公告)日：2003-02-20
申请号：ZA200200761
申请日：2002-01-29
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES
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.
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公开(公告)号：AU742806B2
公开(公告)日：2002-01-10
申请号：AU9147798
申请日：1998-09-23
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES
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Patent Agency Ranking
公开(公告)号：BR9913449A
公开(公告)日：2001-07-24
申请号：BR9913449
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.
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公开(公告)号：AU6545100A
公开(公告)日：2001-05-03
申请号：AU6545100
申请日：2000-10-11
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES
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公开(公告)号：BR9912398A
公开(公告)日：2001-04-24
申请号：BR9912398
申请日：1999-07-26
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES
Abstract: A process for direct smelting a metalliferous feed material is disclosed. Char and fuel gas are produced by pre-treating coal with an oxygen-containing gas. The fuel gas is used to heat an oxygen-containing gas and/or to produce an oxygen-containing gas in an oxygen plant. Metalliferous feed material, char, and the oxygen-containing gas are injected into a direct smelting vessel, and the metalliferous feed material is smelted to molten metal in the direct smelting vessel using the char as a source of energy and as a reductant.
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公开(公告)号：BR9911633A
公开(公告)日：2001-03-20
申请号：BR9911633
申请日：1999-07-01
Applicant: TECH RESOURCES PTY LTD
Inventor： MCCARTHY CAROLYN , DRY RODNEY JAMES , BURKE PETER DAMIAN
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.
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公开(公告)号：BR9813016A
公开(公告)日：2000-08-15
申请号：BR9813016
申请日：1998-09-23
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES
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).
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