Process for the production of metal from metal ores
    1.
    发明授权
    Process for the production of metal from metal ores 失效
    从金属矿石生产金属的工艺

    公开(公告)号:US5772727A

    公开(公告)日:1998-06-30

    申请号:US507247

    申请日:1995-08-18

    摘要: A process of producing metal from a metal ore containing metal oxides includes the steps of: obtaining a reducing gas containing at least one of carbon and hydrogen from solid substances containing at least one of carbon and hydrocarbons; bringing the ore into reaction contact with the reducing gas in a metallurgical blast furnace; and injecting a comminuted, fluidized plastics material into a blast current in a hearth region of the blast furnace, the plastics material comprising an agglomerate including plastics particles having a particle size substantially between 1 mm and 10 mm.

    摘要翻译: PCT No.PCT / EP94 / 01203 371日期:1995年8月18日 102(e)日期1995年8月18日PCT 1994年12月17日PCT PCT。 WO95 / 17527PC PCT出版物 日期:1995年6月29日由含有金属氧化物的金属矿生产金属的方法包括以下步骤:从含有碳和碳的至少一种的固体物质获得含有至少一种碳和氢的还原气体; 在冶金高炉中使矿石与还原气体反应接触; 以及将粉碎的流化塑料材料注入到所述高炉炉膛区域中的鼓风电流中,所述塑料材料包括具有基本上在1mm至10mm之间的粒度的塑料颗粒的附聚物。

    Process for producing metal from metal ores
    2.
    发明授权
    Process for producing metal from metal ores 有权
    金属矿石生产工艺

    公开(公告)号:US06231638B1

    公开(公告)日:2001-05-15

    申请号:US09245926

    申请日:1999-02-08

    IPC分类号: C21C530

    CPC分类号: C21B5/023

    摘要: The invention concerns a process for producing metal from metal ores, in particular crude or pig iron from iron ore, wherein the ore which contains metal oxides is brought into contact with a reducing gas which contains carbon and/or hydrogen from solid, carbon-bearing and/or hydrocarbon-bearing substances obtained at least partially from plastic waste. According to the invention, the carbon-bearing and/or hydrocarbon-bearing substances are injected in comminuted fluidized form as an agglomerate into the air flow in the hearth of the metallurgical shaft or pit furnace, in particular a blast furnace. The apparatus includes a first shut-off device that is closed when blockages of the plastic material occur in the transport conduit or the lance, a second shut-off device that is closed when hot air penetrates into the transport conduit and/or the lance by reverse flow, and a third shut-off device that is closed when compressed air is supplied to a lance for cooling.

    摘要翻译: 本发明涉及从金属矿石,特别是来自铁矿石的原油或生铁中生产金属的方法,其中含有金属氧化物的矿石与含有碳和/或氢的还原气体与固体碳含量接触 和/或至少部分地由塑料废物获得的含烃物质。 根据本发明,含碳和/或含烃物质以粉碎的流化形式作为附聚物注入到冶金井或坑式炉,特别是高炉的炉床中的空气流中。 该设备包括第一切断装置,当塑料材料在输送管道或喷枪中发生堵塞时,关闭装置;第二切断装置,当热空气穿过输送管道和/或喷枪时,第二切断装置关闭 反向流动和第三切断装置,当将压缩空气供给到喷枪以进行冷却时,该装置关闭。

    System for inerting a casting vessel used for transporting molten metal
    3.
    发明授权
    System for inerting a casting vessel used for transporting molten metal 失效
    用于输送用于输送熔融金属的铸造容器的系统

    公开(公告)号:US5286008A

    公开(公告)日:1994-02-15

    申请号:US861873

    申请日:1992-10-29

    CPC分类号: C21C1/06

    摘要: A system for inerting a casting vessel, such as a traversable ladle or torpedo vessel, used for transporting molten metal, the vessel being positioned below the molten metal outlet opening at a transfer station, and the vessel cavity being flushed with an inert gas both prior to the molten metal inletting and during the inflow of the molten metal in such a manner as to avoid contact between the molten metal surface and the vessel and the atomospheric oxygen. A blowpipe is arranged in the vicinity of the molten metal outlet opening but does not intersect the molten metal stream, is located outside the free space profile of the vessel at least during the approach and return of the vessel, and terminates a distance from the vessel inlet opening and produces at its terminal end an inert gas stream which enters the cavity of the vessel adjacent the molten metal stream at an acute angle.

    摘要翻译: PCT No.PCT / DE91 / 00814 Sec。 371日期:1992年10月29日 102(e)日期1992年10月29日PCT 1991年10月15日提交PCT公布。 第WO92 / 07099号公报 日期:1992年4月30日。一种用于输送用于输送熔融金属的可移动的钢包或鱼雷容器的铸造容器的系统,该容器位于转运站的熔融金属出口开口下方,容器腔为 在熔融金属进入之前和在熔融金属流入期间用惰性气体冲洗,以避免熔融金属表面和容器与大气氧之间的接触。 吹气管布置在熔融金属出口开口附近但不与熔融金属流相交,至少在容器的接近和返回期间位于容器的自由空间轮廓外部,并且终止与容器 入口开口并在其末端产生惰性气流,其以锐角进入与熔融金属流相邻的容器的空腔。

    Method and apparatus for preventing fume production when transporting
molten metal from a metallurgical vessel to casting vessels
    4.
    发明授权
    Method and apparatus for preventing fume production when transporting molten metal from a metallurgical vessel to casting vessels 失效
    将金属从冶金容器运输到铸造容器时用于防止生产燃料的方法和装置

    公开(公告)号:US5246485A

    公开(公告)日:1993-09-21

    申请号:US768280

    申请日:1991-10-02

    CPC分类号: B22D45/005 C21B7/14 C21C1/00

    摘要: It is proposed, in the case of at least one transport and discharge runner installed at a tapping orifice of the metallurgical furnace and a transfer station having a swivel or tilting runner in which the molten metal flows from the discharge runner by way of a distribution system into the outlet openings from which it flows into a preferably movable casting vessel, to cover the discharge runners conveying the molten metal from the tapping orifice of the metallurgical furnace with cover hoods, to screen off the transfer station in a substantially gastight manner, to sweep these interiors with inert gas and in addition to screen off the molten metal discharge stream from the outlet opening to the casting vessel by means of a pressurized inert gas covering which prevents air access and is substantally annular in cross-section. By these means, fume production is effectively avoided.

    摘要翻译: PCT No.PCT / DE89 / 00779 Sec。 371日期1991年10月2日 102(e)日期1991年10月2日PCT 1989年12月20日PCT PCT。 出版物WO90 / 08842 日本1990年8月9日提出,在至少一个运输和排放流道安装在冶金炉的出钢口的情况下,以及具有旋转或倾斜流道的转运站,熔融金属从排出口 流道通过分配系统进入流入优选可移动的铸造容器的出口,以覆盖从具有盖罩的冶金炉的出钢口输送熔融金属的排出流道,以筛分出转运站 基本上气密的方式,用惰性气体吹扫这些内部,并且除了通过加压的惰性气体覆盖物从出口开口到铸造容器的熔融金属排放流的屏蔽之外,该加压的惰性气体覆盖物防止空气进入并且在交叉处具有实质上的环形, 部分。 通过这些手段,烟气生产得到有效的避免。