DIRECT SMELTING PLANT AND PROCESS
    63.
    发明公开
    DIRECT SMELTING PLANT AND PROCESS 审中-公开
    VORRICHTUNG UND VERFAHREN ZUM DIREKTEN SCHMELZEN

    公开(公告)号:EP1611259A4

    公开(公告)日:2006-09-13

    申请号:EP04726385

    申请日:2004-04-08

    Abstract: A solids feed means for a direct smelting plant is disclosed. The solids feed means includes 2 or more pairs of lances for injecting solid feed materials for a direct smelting process into a direct smelting vessel. The solids feed means also includes a main supply line and a pair of branch lines for supplying solid feed material to the lances of each pair of lances with the branch lines interconnecting the main supply line and the lances of the pair of lances. The lances are arranged around the vessel in pairs of diametrically opposed lances. At least one pair of lances is provided for injecting metalliferous feed material (such as iron-containing materials, particularly iron ore fines) and at least one of the other pairs of lances is provided for injecting solid carbonaceous material (such as coal) and optionally fluxes. The pairs of lances are arranged around the vessel so that adjacent lances are lances that are provided to inject different materials.

    Abstract translation: 公开了用于直接熔炼设备的固体进料装置。 固体进料装置包括2对或多对用于​​将直接熔炼过程的固体进料注入直接熔炼容器的喷枪。 固体供给装置还包括主供给管线和一对分支管线,用于将固体供给材料供给到每对矛杆的矛杆,分支管线连接主供给管线和一对矛杆的矛杆。 这些喷枪以成对的直径相对的喷枪的形式布置在容器周围。 提供至少一对喷枪用于喷射含金属原料(例如含铁物质,特别是铁矿石细粉),并且提供至少一对其他喷枪对以喷射固体含碳物质(例如煤)和任选地 通量。 成对的矛杆围绕容器布置,使得相邻的矛杆是提供用于注入不同材料的矛杆。

    A DIRECT SMELTING PROCESS AND APPARATUS
    64.
    发明公开
    A DIRECT SMELTING PROCESS AND APPARATUS 有权
    VERFAHREN UND VORRICHTUNG ZUR DIREKTERSCHMELZUNG

    公开(公告)号:EP1320633A4

    公开(公告)日:2005-06-08

    申请号:EP01951240

    申请日:2001-07-19

    Inventor: DRY RODNEY JAMES

    CPC classification number: C21B13/0026 C21B13/0013 Y02P10/136

    Abstract: A direct smelting process for producing iron and/or ferroalloys on a commercial scale in a metallurgical vessel is disclosed. The process includes injecting solid feed materials into a molten bath via multiple solids injection lances (27) and injecting post-combustion oxygen-containing gas into the vessel via one or more lance (26). The process is characterised by selecting the numbers of solids injection and oxygen gas injection lances and the relative positions of these lances and controlling process operating conditions so that: (i) an expanded molten bath zone (28) that has a raised region (70) forms around the oxygen gas injection region of the vessel between the region and the side walls of the vessel; (ii) splashes, droplets and streams of molten material project upwardly from the raised region and form a curtain (72) around the oxygen gas injection region between the region and the vessel side walls and wet the side walls; and (iii) a "free" space (29) forms around a lower end of the or each oxygen gas injection lance, the free space having a concentration of molten material that is lower than the molten material concentration in the expanded molten bath zone.

    Abstract translation: 公开了在冶金容器中以商业规模生产铁和/或铁合金的直接熔炼工艺。 该方法包括通过多个固体喷枪(27)将固体进料注入熔池中,并通过一个或多个喷枪(26)将后燃烧的含氧气体注入容器中。 该方法的特征在于选择固体喷射和氧气喷枪的数量以及这些喷枪的相对位置并控制工艺操作条件,使得:(i)具有凸起区域(70)的扩展熔融浴区域(28) 围绕容器的氧气注入区域在容器的区域和侧壁之间形成; (ii)熔融材料的飞溅物,液滴和熔融物流从凸起区域向上突出,并在区域和容器侧壁之间的氧气注入区域周围形成帘(72)并润湿侧壁; (iii)围绕所述或每个氧气喷枪的下端形成“自由”空间(29),所述自由空间的熔融材料浓度低于膨胀熔池区中的熔融材料浓度。

    A DIRECT SMELTING PROCESS AND APPARATUS
    65.
    发明公开
    A DIRECT SMELTING PROCESS AND APPARATUS 有权
    方法和装置DIREKTERSCHMELZUNG

    公开(公告)号:EP1325159A4

    公开(公告)日:2005-03-02

    申请号:EP01966825

    申请日:2001-09-13

    CPC classification number: C21B13/0013 C21B11/00 C21B13/0026 Y02P10/136

    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 has 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 process 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 molten 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 entraining a volume of top space gas into the jets of oxygen-containing gas injected into the vessel that is 2-6 times the volume of the injected gas.

    SUPPLYING SOLID FEED MATERIALS FOR A DIRECT SMELTING PROCESS
    66.
    发明公开
    SUPPLYING SOLID FEED MATERIALS FOR A DIRECT SMELTING PROCESS 有权
    ZUFUHR VON FESTEN EINSATZSTOFFENFÜREINDIREKTVERHÜTTUNGSVERFAHREN

    公开(公告)号:EP1434888A4

    公开(公告)日:2004-12-15

    申请号:EP02764400

    申请日:2002-10-09

    Inventor: LEIGH DAVID JOHN

    Abstract: A process and apparatus for supplying solid feed materials for a direct smelting process to solids injection lances of a direct smelting vessel is disclosed. The feed materials supply apparatus includes a supply line (L) for conveying iron-containing material and solid carbonaceous material under pressure to solids injection lances (7), and the supply line includes a main feeder line section (15) and a plurality of branch line sections (17) extending from the main feeder line section. Each branch line section is connected to one solids injection lance for supplying iron-containing material and carbonaceous material to that lance. The apparatus further includes an assembly for dispensing iron-containing material under pressure into the main feeder line section of the supply line and an assembly for dispensing carbonaceous material under pressure into the main feeder line section of the supply line.

    Abstract translation: 公开了用于将直接熔炼过程的固体进料供应给直接熔炼容器的固体喷枪的方法和设备。 原料供给装置包括用于将含铁材料和固体碳质材料在压力下输送到固体喷枪(7)的供给管线(L),供给管线包括主供给管线部分(15)和多个分支 (17)从主馈线部分延伸。 每个分支管线部分连接到一个用于向喷枪供应含铁材料和含碳材料的固体喷射喷枪。 该设备还包括用于在压力下将含铁材料分配到供应管线的主馈送线路段中的组件和用于将含碳材料在压力下分配到供应线路的主馈送线段中的组件。

    DIRECT SMELTING PROCESS AND APPARATUS
    67.
    发明公开
    DIRECT SMELTING PROCESS AND APPARATUS 有权
    DIREKTSCHMELZUNGSVERFAHREN UND -VORRICHTUNG

    公开(公告)号:EP1292713A4

    公开(公告)日:2004-06-23

    申请号:EP01909336

    申请日:2001-03-02

    CPC classification number: C21B13/0026 C21B13/0013 Y02P10/136

    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 DEG C relative to a horizontal axis and at a temperature of 800-1400 DEG 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.

    Abstract translation: 公开了一种用于由铁原料生产黑色金属的基于熔池的直接熔炼工艺。 该方法的特征在于将预热的空气相对于水平轴线以20-90℃的角度向下喷入冶金容器中,温度为800-1400℃,速度为200-600m / s, 至少一个喷枪(27)。 该步骤迫使喷枪下端区域内的熔融材料离开喷枪,并在喷枪下端周围形成一个“自由”空间,该空间的熔融材料浓度低于熔化材料浓度 举起浴缸。 该方法的进一步特征在于,所述喷枪定位成使得:(i)所述喷枪延伸到所述容器中的距离至少为所述喷枪的所述下端的外径; (ii)所述喷枪的下端至少是所述喷枪的下端的外径的3倍以上,位于所述熔池的静止表面上方。

    APPARATUS FOR INJECTING SOLID PARTICULATE MATERIAL INTO A VESSEL
    68.
    发明公开
    APPARATUS FOR INJECTING SOLID PARTICULATE MATERIAL INTO A VESSEL 有权
    用,用于固体物质颗粒在容器吹

    公开(公告)号:EP1287170A4

    公开(公告)日:2004-06-23

    申请号:EP01935815

    申请日:2001-05-29

    CPC classification number: C21C5/4606 F27D3/18 F27D2003/168

    Abstract: An elongate metallurgical lance (27) for injecting solid particulate material into molten material held within a vessel (11) is disclosed. The lance includes a central core tube (31) through which to pass solid particulate material, an annular cooling jacket (32) surrounding the central core tube throughout a substantial part of its length, a coolant inlet means (52), and a coolant outlet means (53). An outer wall of a forward end section of the jacket is formed from a first material which has high heat transfer properties and can withstand external temperatures above 1100° C. for prolonged periods when the jacket is cooled by coolant flow. An outer wall of a body section of the jacket is formed from a second material that maintains its structural properties when exposed to external temperatures above 1100° C. for prolonged periods when the jacket is cooled by coolant flow, whereby the outer wall acts as a structural member that contributes to supporting the lance at these temperatures. The outer wall of the forward end section and the outer wall of the body section are welded together.

    A DIRECT SMELTING PROCESS
    70.
    发明公开
    A DIRECT SMELTING PROCESS 有权
    DIREKTES SCHMELZVERFAHREN

    公开(公告)号:EP1114195A4

    公开(公告)日:2003-07-02

    申请号:EP99932560

    申请日:1999-07-26

    Inventor: DRY RODNEY JAMES

    Abstract: A process for direct smelting a metalliferous feed material is disclosed. The process includes the steps of partially reducing metalliferous feed material and subsantially devolatilising coal in a pre-reduction vessel and producing a partially reduced matelliferous feed material and char. The process also includes direct smelting the partially reduced matalliferous 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 smetling 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.

    Abstract translation: 公开了一种直接熔炼含金属原料的方法。 该方法包括在预还原容器中部分还原含金属原料和使煤基本脱挥发分并生产部分还原的含木素原料和焦炭的步骤。 该方法还包括将直接熔炼容器中的部分还原的原料进料直接熔炼成熔融金属,使用焦炭作为能量来源,并将直接煅烧过程中产生的还原剂和后燃烧反应气体与预热空气或 富氧空气达到大于70%的后燃程度,以产生直接熔炼反应所需的热量并将金属保持在熔融状态。

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