Process for the production of molten pig iron or molten steel,
pre-products and sponge iron and a plant for carrying out the process
    1.
    发明授权
    Process for the production of molten pig iron or molten steel, pre-products and sponge iron and a plant for carrying out the process 失效
    用于生产熔融生铁或钢水,预制品和海绵铁的工艺,以及用于进行该工艺的工厂

    公开(公告)号:US05997608A

    公开(公告)日:1999-12-07

    申请号:US817262

    申请日:1997-07-22

    IPC分类号: C21B11/00 C21B13/00 C21B13/14

    摘要: In a process for the production of molten pig iron or molten steel pre-products and sponge iron from charging materials consisting of iron ore and, if desired, fluxes, direct reduction of the charging materials to sponge iron is carried out in a fixed-bed reduction zone, the sponge iron is melted in a meltdown gasifying zone under supply of carbon carriers as well as an oxygen-containing gas and a CO- and H.sub.2 -containing reducing gas is produced which is fed to the reduction zone, is reacted there and is drawn off as an export gas, and the drawn-off export gas is subjected to CO.sub.2 elimination and for the production of sponge iron is along with part of the reducing gas formed in the meltdown gasifying zone as an at least largely CO.sub.2 free reducing gas conveyed to a further reduction zone for the direct reduction of iron ore. In order to save investment costs incurred for the plant and to increase productivity, part of the reducing gas produced in the meltdown gasifying zone is branched off and fed to the further reduction zone while avoiding CO.sub.2 elimination.

    摘要翻译: PCT No.PCT / AT95 / 00198 Sec。 371日期1997年7月22日 102(e)日期1997年7月22日PCT提交1995年10月12日PCT公布。 出版物WO96 / 12044 日期1996年04月25日在由铁矿石和如果需要的话,由铁矿石填充材料生产熔融生铁或钢水预制品和海绵铁的过程中,进行充电材料直接还原成海绵铁 在固定床还原区中,海绵铁在碳载体和含氧气体的供应下在熔化气化区中熔化,并且产生含CO和H 2的还原气体,其被供给到还原区 在那里反应,作为出口气体排出,排出的出口气体进行二氧化碳消除,海绵铁的生产与熔化气化区中形成的一部分还原气体一起至少 大部分不含CO 2的还原气体被输送到另一个还原区域以直接还原铁矿石。 为节省厂房投资成本,提高生产效率,在熔化气化区生产的部分还原气体被分支,并进入进一步还原区,同时避免二氧化碳排放。

    Plant and process for the production of pig iron and/or sponge iron
    2.
    发明授权
    Plant and process for the production of pig iron and/or sponge iron 有权
    用于生产生铁和/或海绵铁的生产和加工

    公开(公告)号:US06183534B2

    公开(公告)日:2001-02-06

    申请号:US09148780

    申请日:1998-09-04

    IPC分类号: C21B1314

    摘要: In a plant for the production of pig iron and/or sponge iron, comprising at least one fluidized bed reactor adapted to receive fine ore, a reducing-gas feed duct leading to said fluidized bed reactor, an off gas discharge duct departing from the fluidized bed reactor and a discharge means, preferably a briquetting means, provided for the reduction product formed in the fluidized bed reactor, the off gas discharge duct of the fluidized bed reactor runs into a purification means, such as a scrubber, subsequently into a heating means and finally into the reducing gas feed duct of the fluidized bed reactor. To produce a product having a high quality standard at a minimum energy input, the heating means is constructed such that it comprises two stages including a heat exchanger as the heating means for the reducing gas and, connected serially therewith, a partial combustion means for the reducing gas with an oxygen feeding means.

    摘要翻译: 在用于生产生铁和/或海绵铁的设备中,包括至少一个适于接收细矿石的流化床反应器,通向所述流化床反应器的还原气进料管,离开流化床 床式反应器和为在流化床反应器中形成的还原产物提供的排出装置,优选压块装置,流化床反应器的废气排放管道进入净化装置,例如洗涤器,随后进入加热装置 最后进入流化床反应器的还原气体进料管道。 为了以最小能量输入产生具有高质量标准的产品,加热装置被构造成使得其包括两个级,包括作为用于还原气体的加热装置的热交换器,并且与其串联连接的部分燃烧装置 用氧气供给装置还原气体。

    Process and plant for the direct reduction of particulate iron-oxide-containing material
    3.
    发明授权
    Process and plant for the direct reduction of particulate iron-oxide-containing material 有权
    用于直接还原颗粒状氧化铁的材料的工艺和设备

    公开(公告)号:US06336954B1

    公开(公告)日:2002-01-08

    申请号:US09505559

    申请日:2000-02-17

    IPC分类号: C21B1300

    摘要: A process for the direct reduction of particulate iron-oxide-containing material by fluidization. A synthesis gas is introduced as a reducing gas into several fluidized bed zones consecutively arranged in series for the reducing gas. The reducing gas is conducted from one fluidized bed zone to another fluidized bed zone in counterflow to the particulate iron-oxide containing material. In order to reduce operating costs and, in particular, the energy demand, the temperature of the iron-oxide-containing material is adjusted in the first fluidized bed zone to be either below 400° C. (and, preferably, below 350° C.), or above 580° C. (and preferably about 650° C.), or to a temperature ranging from 400° C. to 580° C. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be below 400° C., the temperature range in the following fluidized bed zone between 400° C. and 580° C. is passed through within a period of 10 minutes and, preferably, within 5 minutes. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be above 580° C., the temperature range in the first fluidized bed zone between 400° C. and 580° C. is passed through within a period of time of maximally 10 minutes and, preferably, 5 minutes. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be in the range of from 400° C. to 580° C., the iron-oxide-containing material remains within that temperature range for a maximum of 10 minutes and, preferably, 5 minutes, and the material is passed on into the following fluidized bed zone immediately after having reached the desired temperature.

    摘要翻译: 一种通过流化直接还原含氧化铁颗粒物质的方法。 将合成气作为还原气体引入连续排列为还原气体的多个流化床区域。 还原气体从一个流化床区域传导到另一个流化床区域,与含铁氧化物颗粒材料相反。 为了降低运行成本,特别是能量需求,将含铁氧化物的材料的温度在第一流化床区域调节至低于400℃(优选低于350℃) ),或高于580℃(优选约650℃),或达到400℃至580℃的温度。如果第一流化床中含氧化铁的材料的温度 将区域调节至低于400℃,在下述流化床区域中在400℃至580℃之间的温度范围在10分钟内优选在5分钟内通过。 如果将第一流化床区域中含氧化铁的材料的温度调节至高于580℃,则在400℃至580℃之间的第一流化床区域内的温度范围通过 时间最长为10分钟,最好为5分钟。 如果将第一流化床区域中含氧化铁的材料的温度调节至400℃至580℃的范围内,则含铁氧化物的材料保持在该温度范围内 最多10分钟,优选5分钟,并且在达到所需温度之后立即将材料通入下一流化床区。

    Plant for the direct reduction of particulate iron-oxide-containing material

    公开(公告)号:US06569377B2

    公开(公告)日:2003-05-27

    申请号:US10045061

    申请日:2002-01-15

    IPC分类号: C21B1300

    摘要: In a process for the direct reduction of particulate iron-oxide-containing material by fluidization, a synthesis gas is introduced as a reducing gas into several fluidized bed zones consecutively arranged in series. The reducing gas is conducted from one fluidized bed zone to another fluidized bed zone in counterflow to a flow of particulate iron-oxide containing material through the fluidized bed zones. In order to reduce operating costs and, in particular, the energy demand, various process parameters are varied according to the temperature of the iron-oxide-containing material in the first fluidized bed zone being adjusted to be below 400° C. (and, preferably, below 350° C.), above 580° C. (and preferably about 650° C.), or to a temperature within the range of from 400° C. to 580° C. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is maintained to be below 400° C., the temperature of the iron-oxide-containing material in the following fluidized bed zone is passed through the temperature range between 400° C. and 580° C. within a period of 10 minutes and, preferably, within 5 minutes. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to a temperature above 580° C., the temperature range of between 400° C. and 580° C. in the first fluidized bed zone is passed through within a maximum period of time of 10 minutes and, preferably, 5 minutes. If the temperature of the iron-oxide-containing material in the first fluidized bed zone is adjusted to be within the range of from 400° C. to 580° C., the iron-oxide-containing material remains in the first fluidized bed zone within that temperature range for a maximum of 10 minutes and, preferably, 5 minutes, and the material is then passed on into the following fluidized bed zone immediately after having reached the desired temperature.

    Method for reducing a particulate material containing a metal, especially iron ore
    5.
    发明授权
    Method for reducing a particulate material containing a metal, especially iron ore 有权
    用于还原含有金属,特别是铁矿石的颗粒材料的方法

    公开(公告)号:US07597739B2

    公开(公告)日:2009-10-06

    申请号:US11820749

    申请日:2007-06-20

    IPC分类号: C21B13/14

    摘要: In a process for reducing iron-ore-containing particulate material in at least a two-stage process, reducing gas is conducted through at least two reaction zones consecutively arranged in series and formed by a moving particulate material and the particulate material passes through the reaction zones in reverse order to the reducing gas, with the particulate material being heated in the reaction zone arranged first for the particulate material and being reduced in the further reaction zone.In order to achieve a maximum preheating temperature without any formation of magnetite, the reducing gas added to the first reaction zone is conditioned such that no or hardly any reduction takes place, although for the particulate material a preheating temperature within the fringe range of starting a reduction is achieved, whereby either the degree of oxidation of the reducing gas is increased or the temperature of the reducing gas is decreased or both measures are carried out jointly and whereby, in the reactor zone arranged second for the iron ore, a temperature level of at least about 600° C., preferably in the range of between 600 and 700° C., in particular of between 620 and 660° C., is adjusted and the iron-oxide-containing material is reduced to wuestite (FIG. 1).

    摘要翻译: 在至少两阶段工艺中还原含铁矿石颗粒材料的方法中,还原气体通过至少两个串联连续排列的反应区进行,并由移动的颗粒材料形成,颗粒材料通过反应 区域与还原气体相反,其中颗粒材料在反应区域中被加热,首先用于颗粒材料并在另外的反应区域中被还原。 为了达到最大预热温度而没有任何形成磁铁矿,添加到第一反应区域的还原气体被调节,使得不发生或几乎不发生任何还原,尽管对于颗粒材料,预热温度在起始 由此可以减少还原气体的氧化程度,还原气体的温度降低或两者兼而有之,由此在铁矿石排列第二的反应器区域中, 至少约600℃,优选在600和700℃之间,特别是在620和660℃之间,并且将含铁氧化物的材料还原成为硅酸盐(图1 )。

    METHOD FOR PRODUCING MOLDINGS
    6.
    发明申请
    METHOD FOR PRODUCING MOLDINGS 有权
    生产模具的方法

    公开(公告)号:US20100133723A1

    公开(公告)日:2010-06-03

    申请号:US12598973

    申请日:2008-04-28

    IPC分类号: B29C43/52

    CPC分类号: C10L5/16 C10L5/22 C10L5/361

    摘要: A method for producing moldings, in particular briquettes, from fine-grained to medium-grained mixed material using organic binders. In a first stage, the mixed material is heated to a temperature necessary for the molding operation. In a second, atmospherically separate stage, mixing of the mixed material with binder is performed, as well as downstream steps of the process. The method allows hazardous emissions to be avoided.

    摘要翻译: 使用有机粘合剂从细粒到中粒混合材料生产模制品,特别是团块的方法。 在第一阶段中,混合材料被加热到模制操作所需的温度。 在第二个大气分离的阶段,进行混合材料与粘合剂的混合,以及该方法的下游步骤。 该方法可以避免危险的排放。

    Method and device for distributing a lumpy bulk material

    公开(公告)号:US07059818B2

    公开(公告)日:2006-06-13

    申请号:US10380941

    申请日:2001-08-27

    IPC分类号: B65G11/00

    摘要: The invention relates to an apparatus and a process for distributing a lumpy bulk material, in particular iron ore which has been at least partially prereduced, onto an extensive surface, in particular onto a fixed bed, this surface extending within a reactor or vessel used in physical or chemical process technology, in particular in a reactor used in a metallurgical plant to produce pig iron or primary steel products, and the lumpy bulk material being charged via at least one charging apparatus, which has at least two, in particular rotationally symmetrical, chutes, which are preferably arranged at the same distance from the vertical longitudinal axis of the reactor. In this arrangement, at least a proportion of the bulk material, in particular after it has been introduced into the chute, before it comes into contact with the extensive surface, is distributed in the radial and/or tangential direction—as seen from above—at a scattering device which is assigned to at least one of the chutes and is preferably in the chute.

    Method and device for distributing a lumpy bulk material
    8.
    发明授权
    Method and device for distributing a lumpy bulk material 失效
    用于分配块状散装材料的方法和装置

    公开(公告)号:US07513729B2

    公开(公告)日:2009-04-07

    申请号:US11393970

    申请日:2006-03-30

    IPC分类号: B65G11/00

    摘要: The invention relates to an apparatus and a process for distributing a lumpy bulk material, in particular iron ore which has been at least partially prereduced, onto an extensive surface, in particular onto a fixed bed, this surface extending within a reactor or vessel used in physical or chemical process technology, in particular in a reactor used in a metallurgical plant to produce pig iron or primary steel products, and the lumpy bulk material being charged via at least one charging apparatus, which has at least two, in particular rotationally symmetrical, chutes, which are preferably arranged at the same distance from the vertical longitudinal axis of the reactor. In this arrangement, at least a proportion of the bulk material, in particular after it has been introduced into the chute, before it comes into contact with the extensive surface, is distributed in the radial and/or tangential direction—as seen from above—at a scattering device which is assigned to at least one of the chutes and is preferably in the chute.

    摘要翻译: 本发明涉及一种用于将块状块状材料,特别是至少部分预还原的铁矿石分散到广泛的表面上,特别是在固定床上的装置和方法,该表面在用于 特别是在用于冶金设备中用于生产生铁或初级钢产品的反应器中的块状体材料,以及经由至少一个充电装置充填的块状体材料,其至少具有两个,特别是旋转对称的, 斜槽优选地布置在与反应器的垂直纵向轴线相同的距离处。 在这种布置中,散装材料的至少一部分,特别是在与大面积接触之后已被引入滑槽中的部分材料分布在径向和/或切向方向上, 在分配给至少一个滑槽并且优选地在滑槽中的散射装置中。

    Arrangement for the dosed introduction of fine-particulate material into a reactor vessel
    10.
    发明授权
    Arrangement for the dosed introduction of fine-particulate material into a reactor vessel 失效
    用于将细颗粒材料定量引入反应器容器的布置

    公开(公告)号:US06210627B1

    公开(公告)日:2001-04-03

    申请号:US09284095

    申请日:1999-04-07

    IPC分类号: C21B1314

    摘要: An arrangement for the dosed introduction of fine-particulate material into a reactor vessel comprises a fluidized bed sluice, into which a material supply means enters from above and into which a gas duct feeding a fluidization gas runs in the lower end region thereof and which includes an overflow tube for conveying on the fine-particulate material. In order to introduce the fine-particulate material into the reactor vessel at specific zones, a plurality of independently connectable fluidized bed sluices are provided outside of the reactor vessel, the fluidized bed sluices having overflow tubes which project into the interior of the reactor vessel.

    摘要翻译: 用于将细颗粒材料定量引入反应器容器的布置包括流化床闸门,物料供应装置从上方进入其中,供给流化气体的气体管道在其下端区域中延伸,并且包括 用于在细颗粒材料上输送的溢流管。 为了在特定区域将细颗粒材料引入反应器容器中,在反应器外部设置多个可独立连接的流化床闸门,流化床闸门具有突出到反应器容器内部的溢流管。