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    Two-zone countercurrent smelter system and process
    1.
    发明授权
    Two-zone countercurrent smelter system and process 失效
    双区逆流冶炼厂系统及工艺

    公开(公告)号：US5378260A

    公开(公告)日：1995-01-03

    申请号：US736626

    申请日：1991-07-26

    申请人： James H. Cox ,  Richard J. Fruehan ,  John F. Elliott, deceased

    发明人： James H. Cox ,  Richard J. Fruehan ,  John F. Elliott, deceased

    IPC分类号： C21B11/08 ,  C21B13/00 ,  F27B3/04 ,  F27B3/10 ,  C21B13/10

    CPC分类号： C21B13/0013 ,  Y02P10/136

    摘要： A process for continuously smelting iron ore by use of coal to yield molten iron or semi-steel is disclosed. The process comprises the steps of establishing a melt covered by slag; inducing the slag and the molten iron to flow countercurrently to one another, toward opposite ends of the smelter; maintaining iron oxide-reducing conditions in that zone of the smelter towards which the slag flows; maintaining carbon-oxidizing conditions in that zone of the smelter towards which the molten iron flows; continuously or semicontinuously tapping the slag from the reducing zone end of the smelter; continuously or semicontinuously tapping the molten iron from the oxidizing zone end of the smelter; and adding to both zones iron ore, coal, oxygen, and flux at addition rates sufficient to keep the molten iron in the reducing zone substantially saturated with carbon, maintain in the slag being tapped an FeO content of about 5 weight percent or less, and maintain in the molten iron being tapped a carbon content of about 0.5 to 5 weight percent. A slag dam preferably is included in the smelter, to impede the backflow of the slag from the reducing zone to the oxidizing zone. A metal bath dam with one or more flow-through portals also is preferably used, submerged below the slag dam, to impede the backflow of the hot metal.

    摘要翻译： 公开了一种通过使用煤连续熔炼铁矿石来生产铁水或半钢的方法。 该方法包括建立由炉渣覆盖的熔体的步骤; 引起炉渣和铁水相反地流向冶炼厂的相对端; 在炉渣流过的冶炼厂区域内保持氧化铁还原条件; 保持冶炼炉所在区域内的碳氧化条件，铁水流向熔融炉; 连续或半连续地从冶炼厂的还原区端开采炉渣; 连续地或半连续地从冶炼厂的氧化区端抽出铁水; 并且以增加速率将足够的铁矿石，煤，氧气和助熔剂添加到还原区中基本上被碳饱和的还原区中，保持炉渣中的FeO含量为约5重量％以下，以及 保持在铁水中的碳含量约为0.5-5重量％。 熔炉中最好包括一个渣坝，以阻止炉渣从还原区回流到氧化区。 优选使用具有一个或多个流通门户的金属浴缸，浸没在渣坝下方，以阻止热金属的回流。

    Low carbon aluminum production method using single furnace carbothermic reduction operated in batch mode
    2.
    发明授权
    Low carbon aluminum production method using single furnace carbothermic reduction operated in batch mode 有权
    使用单炉碳热还原的低碳铝生产方法以批式运行

    公开(公告)号：US07556667B2

    公开(公告)日：2009-07-07

    申请号：US11676017

    申请日：2007-02-16

    申请人： Richard J. Fruehan

    发明人： Richard J. Fruehan

    IPC分类号： C22B21/02

    CPC分类号： C22B21/02 ,  C22B4/02 ,  C22B5/06 ,  C22B5/10 ,  Y02P10/212

    摘要： A batch process for producing low carbon aluminum using a single carbothermic reactor furnace is disclosed in which the slag making, metal making and carbon extraction is carried out in a single furnace, single compartment reactor. The Al2O and Al vapors generated in slag making and metal making steps are recovered in a vapor recovery reactor, and treated with a carbonaceous material to produce recyclable material comprising Al4C3. The recyclable material is used to assist with one or more subsequent slag making steps.

    摘要翻译： 公开了使用单个碳热还原炉生产低碳铝的分批方法，其中造渣，金属制造和碳萃取在单炉，单室反应器中进行。 在造渣和金属制造步骤中产生的Al 2 O和Al蒸汽在蒸气回收反应器中回收，并用碳质材料处理以产生包含Al 4 C 3的可再循环材料。 可回收材料用于辅助一个或多个随后的除渣步骤。

    Method for increasing metallic yield in bottom blown processes
    3.
    发明授权
    Method for increasing metallic yield in bottom blown processes 失效
    在底部吹塑工艺中增加金属熔点的方法

    公开(公告)号：US3930843A

    公开(公告)日：1976-01-06

    申请号：US501915

    申请日：1974-08-30

    申请人： Richard J. Fruehan

    发明人： Richard J. Fruehan

    IPC分类号： C21C5/34

    CPC分类号： C21C5/34 ,  Y02P10/143

    摘要： In the Q-BOP process for the production of low carbon steels (eg. 0.02 - 0.05% C), inert gas-oxygen mixtures are employed during the latter part of the blow, i.e. when the C content of the melt reaches a level of about 0.25%. As such lower carbon contents, the rate of decarburization is not decreased by dilution of the oxygen with inert gas. However, such dilution results in less O.sub.2 being available for oxidation of iron, hence significant increases in metallic yield may be achieved. By precise control of the O.sub.2 /inert gas ratio, increases in metallic yield in excess of 2% are achieved.

    LOW CARBON ALUMINUM PRODUCTION METHOD USING SINGLE FURNACE CARBOTHERMIC REDUCTION OPERATED IN BATCH MODE
    4.
    发明申请
    LOW CARBON ALUMINUM PRODUCTION METHOD USING SINGLE FURNACE CARBOTHERMIC REDUCTION OPERATED IN BATCH MODE 有权
    低成本铝制生产方法采用单炉燃烧减热方式

    公开(公告)号：US20080196545A1

    公开(公告)日：2008-08-21

    申请号：US11676017

    申请日：2007-02-16

    申请人： Richard J. Fruehan

    发明人： Richard J. Fruehan

    IPC分类号： C22B4/00

    CPC分类号： C22B21/02 ,  C22B4/02 ,  C22B5/06 ,  C22B5/10 ,  Y02P10/212

    摘要： A batch process for producing low carbon aluminum using a single carbothermic reactor furnace is disclosed in which the slag making, metal making and carbon extraction is carried out in a single furnace, single compartment reactor. The Al2O and Al vapors generated in slag making and metal making steps are recovered in a vapor recovery reactor, and treated with a carbonaceous material to produce recyclable material comprising Al4C3. The recyclable material is used to assist with one or more subsequent slag making steps.

    摘要翻译： 公开了使用单个碳热还原炉生产低碳铝的分批方法，其中造渣，金属制造和碳萃取在单炉，单室反应器中进行。 在炉渣生产和金属制造步骤中产生的Al 2 O和Al蒸气在蒸气回收反应器中回收，并用碳质材料处理以产生可回收材料，其包含Al 4 N 3 C 3 3。 可回收材料用于辅助一个或多个随后的除渣步骤。

    Method of controlling temperature in Q-BOP
    8.
    发明授权
    Method of controlling temperature in Q-BOP 失效
    Q-BOP温度控制方法

    公开(公告)号：US3954445A

    公开(公告)日：1976-05-04

    申请号：US501914

    申请日：1974-08-30

    申请人： Richard J. Fruehan

    发明人： Richard J. Fruehan

    IPC分类号： C21C5/34 ,  C21C7/00

    CPC分类号： C21C5/34 ,  Y02P10/143 ,  Y02P10/212

    摘要： A method of producing steel in a bottom-blown oxygen steelmaking vessel wherein the use of scrap steel in the original charge is minimized or eliminated, and the final temperature of the charge is controlled by injecting thereinto 5 to 30 pounds of finely divided iron oxide per ton of charge metal before the carbon content of the charge is reduced to 0.3 percent.

    摘要翻译： 在底吹氧气炼钢容器中生产钢的方法，其中使用原始装料中的废钢最小化或消除，并且通过将5至30磅细碎的氧化铁注入其中来控制装料的最终温度 吨充电金属之前，碳含量的电荷减少到0.3％。