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公开(公告)号：CZ20002904A3
公开(公告)日：2001-07-11
申请号：CZ20002904
申请日：2000-08-08
Applicant: TECH RESOURCES PTY LTD
Inventor： BURKE PETER DAMIAN
Abstract: A direct smelting process for producing molten iron and/or ferroalloys from a metalliferous feed material is disclosed. The process is a molten bath based process that is carried out in a direct smelting vessel. The process includes the steps of supplying metalliferous feed material, carbonaceous material and fluxes into the vessel; smelting metalliferous feed material to molten iron in the molten bath; and injecting an oxygen-containing gas into the vessel to post-combust gases generated in the process. The process is characterised by controlling the level of molten metal in the vessel by adjusting the pressure in the vessel.
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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：AU4272500A
公开(公告)日：2001-01-11
申请号：AU4272500
申请日：2000-06-28
Applicant: TECH RESOURCES PTY LTD
Inventor： BATES CECIL PETER , BURKE PETER DAMIAN
IPC: C21B13/10 , C21B11/08 , C21B13/00 , C21B13/04 , C21C5/28 , F27B3/22 , F27B3/28 , F27D1/12 , F27D1/16 , F27D3/18
Abstract: A procedure for starting up a direct smelting process for producing iron from a metalliferous feed material in a metallurgical vessel is disclosed. The vessel is of the type which includes a plurality of feed material injection lances/tuyeres (11, 13). The start-up procedure includes the steps of: (a) preheating the vessel; (b) supplying a charge of molten iron to the vessel and forming a molten bath in the vessel, (c) supplying carbonaceous material and flux to the molten bath and injecting oxygen-containing gas through one or more than one feed material injection lance/tuyere and combusting carbon and bath derived gas (if present) and thereby heating the molten bath and generating slag; and (d) suppling metalliferous feed material to the vessel while continuing supply of carbonaceous material and flux and injection of oxygen-containing gas and smelting metalliferous feed material and producing molten iron and thereby completing the start-up procedure.
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公开(公告)号：CZ302976B6
公开(公告)日：2012-02-01
申请号：CZ20023440
申请日：2001-04-11
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , BURKE PETER DAMIAN
Abstract: Rešení se týká zpusobu prímého tavení, založeného na roztavené lázni, a zarízení na výrobu kovu z materiálu, obsahujícího železo. Zpusob zahrnuje vhánení vstupních materiálu, kterými jsou tuhý materiál a nosný plyn, do roztavené lázne pri rychlosti alespon 40 m/s pres alespon jednu dolu smerující prívodní trubku pro vhánení pevných materiálu, opatrenou dodávací trubkou o vnitrním prumeru 40 mm až 200 mm, která je umístena tak, že stredová osa výstupního konce prívodní trubky leží pod úhlem od 20.degree. do 90.degree. vzhledem k vodorovné ose. Vhánení vstupních materiálu vytvárí povrchové proudení plynu alespon 0,04 Nm.sup.3.n./s/m.sup.2 .n.v roztavené lázni alespon cástecne prostrednictvím reakcí vháneného materiálu v lázni. Proudení plynu zpusobuje, že roztavený materiál je vypuzován smerem vzhuru jako rozstrikované a šplíchající kapicky nebo proudy a vytvárí expandovanou oblast roztavené lázne, pricemž proudení plynu a smerem vzhuru vypuzovaný roztavený materiál zpusobují zásadní pohyb materiálu v roztavené lázni a silné promíchávání roztavené lázne. Vstupní materiály jsou zvoleny tak, že v celkovém smyslu jsou reakce vstupních materiálu v roztavené lázni endotermické. Zpusob rovnež zahrnuje dmýchání plynu, obsahujícího kyslík, do horní oblasti nádoby prostrednictvím alespon jedné prívodní trubky pro dmýchání plynového kyslíku a horlavých plynu pro prídavné spalování, uvolnených z roztavené lázne.
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公开(公告)号：CA2335761C
公开(公告)日：2011-02-08
申请号：CA2335761
申请日：1999-07-01
Applicant: TECH RESOURCES PTY LTD
Inventor： LEIGH DAVID JOHN , BURKE PETER DAMIAN , BATES CECIL PETER , WEBER RALPH GOTTFRIED
IPC: C21B11/00 , C22B5/10 , C21B11/08 , C21B13/00 , C21B13/10 , C21C5/56 , C22B5/00 , 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.
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Patent Agency Ranking
公开(公告)号：CA2401805C
公开(公告)日：2010-12-14
申请号：CA2401805
申请日：2001-03-02
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , BURKE PETER DAMIAN
Abstract: A molten bath-based direct smelting process for producing ferrous metal from a ferrous feed material is disclosed. The process is characterised by injecting pre-heated air downwardly into metallurgical vessel at an angle of 20 to 90 °C relative to a horizontal axis and at a temperature of 800-1400 °C and at a velocity of 200-600 m/s via at least one lance (27). This step forces molten material in the region of a lower end of the lance away from the lance and forming a"free" space around the lower end of the lance that has a concentration of molten material that is lower than the molten material concentration in the raised bath. The process is further characterised in that the lance is located so that: (i) the lance extends into the vessel a distance that is at least the outer diameter of the lower end of the lance; and (ii) the lower end of the lance is at least 3 times the outer diameter of the lower end of the lance above a quiescent surface of the molten bath.
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公开(公告)号：AU2005220265B2
公开(公告)日：2010-09-09
申请号：AU2005220265
申请日：2005-10-10
Applicant: TECH RESOURCES PTY LTD
Inventor： LEIGH DAVID JOHN , BURKE PETER DAMIAN
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公开(公告)号：CA2405966C
公开(公告)日：2009-10-06
申请号：CA2405966
申请日：2001-04-11
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , BURKE PETER DAMIAN
Abstract: A molten-bath based direct smelting process and apparatus for producing meta ls from a ferrous material is disclosed. The process includes injecting feed materials being solid material and carne r gas into a molten bath at a velocity of at least 40m/s through at least one downwardly extending solids injection lance having a delivery tube of internal diameter of 40-200mm 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 honzontal axis. The feed materials injection generates a superficial gas flow of at least 0.04 Nm3/s/m2 within the molten bath at least in part by reactions of injected material in the bath. The gas flow 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 molt en 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.
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公开(公告)号：DE60129961D1
公开(公告)日：2007-09-27
申请号：DE60129961
申请日：2001-03-02
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , BURKE PETER DAMIAN
Abstract: A molten bath-based direct smelting process for producing ferrous metal from a ferrous feed material is disclosed. The process is characterised by injecting pro-heated air downwardly into metallurgical vessel at an angle of 20 to 90° C. relative to a horizontal axis and at a temperature of 800-1400 ° C. and at a velocity of 200-600 m/s via at least one lance ( 27 ) . This step forces molten material in the region of a lower end of the lance away from the lance and forming a "free"space around the lower end of the lance that has a concentration of molten material that is lower than the molten material concentration in the raised bath. The process is further characterised in that the lance is located so that: (i) the lance extends into the vessel a distance that is at least the outer diameter of he lover end of the lance; and (ii) the lower end of the lance is at least 3 times the outer diameter of the lower end of the lance above a quiescent surface of the molt bath.
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公开(公告)号：DE60128671D1
公开(公告)日：2007-07-12
申请号：DE60128671
申请日：2001-04-11
Applicant: TECH RESOURCES PTY LTD
Inventor： DRY RODNEY JAMES , BURKE PETER DAMIAN
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.
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