公开(公告)号：US20010025550A1

公开(公告)日：2001-10-04

申请号：US09820610

申请日：2001-03-30

申请人： MIDREX INTERNATIONAL B.V. Zurich Branch

发明人： Yasuhiro Tanigaki ,  Akira Uragami

IPC分类号： C21B011/00

CPC分类号： C21B13/10 ,  C21B13/105 ,  Y02P10/136

摘要： A process comprising: charging a raw material compacting substance containing a carbonaceous reducing agent and an iron oxide contained substance into a moving hearth type furnace; reducing the raw material compacting substance to a reducing ratio 30 to 80% within the reducing furnace to thereby form a shell formed of metal iron or forming a state that a shell formed of metal iron or metal iron are stretched around in a network fashion and a carbonaceous reducing agent remains in a clearance therebetween; agglomerating produced slag containing FeO therein; charging the compacting substance reduced into a melting furnace in a state maintaining a high temperature, and carrying out final reducing and melting to obtain molten meal iron.

摘要翻译： 一种方法，包括：将含有碳质还原剂和含氧化铁的物质的原料压实物质装入移动的炉床式炉中; 在还原炉内将原料压实物质还原为30〜80％的还原率，从而形成由金属铁形成的壳体，或形成由金属铁或金属铁形成的壳体以网状方式拉伸的状态， 碳质还原剂保留在它们之间的间隙中; 在其中凝集生成含有FeO的炉渣; 在保持高温的状态下将压实物质装入熔化炉中，进行最终的还原和熔融以获得熔融铁粉。

公开(公告)号：US20030188603A1

公开(公告)日：2003-10-09

申请号：US10395340

申请日：2003-03-25

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Takeshi Maki ,  Yoshiyuki Matsui ,  Takeshi Sugiyama ,  Takao Harada ,  Masahiko Tetsumoto ,  Hiroshi Tamazawa ,  Tadashi Ueda ,  Koichi Morioka ,  Nobuyuki Iwasaki ,  Hidetoshi Tanaka ,  Kojiro Fuji ,  Hiroshi Sugitatsu

IPC分类号： C21B011/00

CPC分类号： C22B19/30 ,  C21B13/0046 ,  C21B13/105 ,  C22B1/245 ,  C22B5/10 ,  C22B5/16 ,  Y02P10/216

摘要： A method for making reduced iron using blast-furnace sludge is provided. The method includes a mixing step of mixing the blast-furnace sludge and an iron-oxide-containing powder to prepare a mixed material, an agglomerating step of agglomerating the mixed material to form agglomerates, a feeding step of feeding the agglomerates onto a continuously moving hearth, and a reducing step of heating the agglomerates to remove zinc and reduce the agglomerates.

摘要翻译： 提供了使用高炉污泥制造还原铁的方法。 该方法包括混合高炉污泥和含铁氧化物的粉末以制备混合材料的混合步​​骤，使混合材料凝聚以形成附聚物的附聚步骤，将附聚物进料到连续移动的进料步骤 炉底，以及还原步骤，加热附聚物以除去锌并还原附聚物。

公开(公告)号：US20040237718A1

公开(公告)日：2004-12-02

申请号：US10813140

申请日：2004-03-29

申请人： VOEST-ALPINE Industrieanlagenbau GmbH & Co.

发明人： Leopold Werner Kepplinger ,  Johann Reidetschlager ,  Johannes Schenk ,  Siegfried Zeller ,  Konstantin Milionis ,  Hanspeter Ofner

IPC分类号： C21B011/00

CPC分类号： C21B13/0033 ,  Y02P10/122 ,  Y02P10/126 ,  Y02P10/128 ,  Y02P10/136

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 600null C., preferably in the range of between 600 and 700null C., in particular of between 620 and 660null C., is adjusted and the iron-oxide-containing material is reduced to wuestite.

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。

公开(公告)号：US20030159541A1

公开(公告)日：2003-08-28

申请号：US10312811

申请日：2003-03-04

发明人： Leopold Werner Kepplinger ,  Franz Hauzenberger ,  Johannes Schenk ,  Sanghoon Joo

IPC分类号： C21B011/00

CPC分类号： C21B13/002 ,  B28B11/245 ,  B28B13/04 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/22 ,  C21B2100/44 ,  C21B2100/66 ,  C22B5/14 ,  F27B15/00 ,  Y02P10/122 ,  Y02P10/136

摘要： In a process for the gas reduction of particulate oxide-containing ores, in particular iron-oxide-containing material, in the fluidized-bed process at a pressure of

摘要翻译： 在流化床工艺中，在5巴的压力下气体还原含颗粒氧化物的矿石，特别是含氧化铁的材料的方法中，其中通过由煤产生的还原气体的矿石是 在设计为预热阶段（5）的流化床反应器（1）中加热，任选地也预还原，随后在至少一个流化床反应器（2,3）中还原成海绵铁，设计为 还原级（7,8），经由还原气体供给管道（12）或还原气体管道（13）的还原气体从还原级（7,8）传导到预热级（5） 要逐步减少并传导的材料的相反方向，并且在净化之后作为出口气体排出，向供给到还原级（7,8）和/或预热的还原气体供应热量 阶段（5），即通过与还原气体中的气体还原提供的一部分还原气体一起燃烧和氧气和/或空气 在舞台（7,8）和/或预热舞台（5）上。 （图1 ）

公开(公告)号：US20020005210A1

公开(公告)日：2002-01-17

申请号：US09740465

申请日：2000-12-19

发明人： Douglas R. Olsen ,  Charles D. Blumenschein

IPC分类号： C21B011/00 ,  C23G001/02

CPC分类号： C23G1/36 ,  C01B7/035 ,  C01B7/0706 ,  C01G49/14

摘要： Apparatus and method for regenerating spent pickling liquor from the acid pickling of a metal are disclosed. Acid pickling of a metal uses a first acid and forms a spent pickling liquor (SPL). A second acid added to the spent pickling liquor, under specific low temperatures produces a metal salt of the second acid. The metal salt of the second acid is crystallized and removed from a regenerated first acid. In one aspect, hydrochloric acid is regenerated from a pickling process for iron or steel, using sulfuric acid as the second acid, and ferrous sulfate heptahydrate crystals are produced. Regenerated hydrochloric acid is recycled to the acid pickling process.

摘要翻译： 公开了从金属的酸洗中再生废酸洗液的设备和方法。 金属的酸洗使用第一种酸，并形成废酸洗液（SPL）。 在特定低温下添加到废酸洗液中的第二种酸产生第二种酸的金属盐。 将第二酸的金属盐从再生的第一酸中结晶并除去。 一方面，使用硫酸作为第二酸，从铁或钢的酸洗工艺中再生盐酸，并生成七水硫酸亚铁晶体。 再生盐酸再循环到酸洗过程中。

公开(公告)号：US20040025637A1

公开(公告)日：2004-02-12

申请号：US10416830

申请日：2003-05-14

发明人： Jorg Werkmeister ,  Rainer Weber

IPC分类号： C21B011/00

CPC分类号： A62D3/36 ,  C22B7/006 ,  Y02P10/234

摘要： The invention relates to a method for rendering inert dust residue containing silicon metal, left over from trichlorosilane synthesis. The inventive method produces valuable materials containing silicon which can be used in metallurgical processes. According to said method, the process of rendering the residue inert is carried out in several steps. In a first step, 10 to 50 wt. % water, in relation to the quantity of residue, and an at least equimolar quantity of an alkaline compound, in relation to the chloride content of the residue, are added to the residue. Subsequently or simultaneously, the residue is heated to a temperature of 50 to 200null C. In a further step, at least twice the quantity of water is added to this mixture, which is extensively liberated from dissolved salts by filtration and subsequent washing with water.

摘要翻译： 本发明涉及一种由三氯硅烷合成残留的含有金属硅的惰性粉尘残渣的方法。 本发明的方法产生可用于冶金工艺中的含有硅的有价值的材料。 根据所述方法，使残留物呈惰性的方法分几步进行。 在第一步中，10至50wt。 相对于残余物的量，相对于残余物的氯化物含量，至少等摩尔量的碱性化合物的％水加入到残余物中。 随后或同时，将残余物加热至50至200℃的温度。在另外的步骤中，向混合物中加入至少两倍的水，其通过过滤从而从溶解的盐中广泛释放并随后用水洗涤 。

公开(公告)号：US20020166412A1

公开(公告)日：2002-11-14

申请号：US09913930

申请日：2001-11-21

发明人： Nag-Joon Choi ,  Sun-Kwang Jeong ,  Hang-Goo Kim ,  Heung-Won Kang ,  Hauzenberger Franz

IPC分类号： C21B011/00

CPC分类号： C21B13/002 ,  C21B13/0033 ,  C21B13/14 ,  C21B2100/44 ,  C22B5/14 ,  Y02P10/136 ,  Y02P10/216

摘要： A smelting reduction apparatus which separates exhaust gas, which is exhausted from a melter-gasifier or a fluidized bed reactor, into dusts and reducing gas to supply them to each fluidized bed reactor respectively is disclosed, in which the smelting reduction apparatus includes a three-stage type fluidized bed reactor, a melter-gasifier for manufacturing molten pig iron by finally reducing the fine iron ores of which reaction is finished in a final fluidized bed reactor, and a dust separating device, which performs separation of exhausted gas from the melter-gasifier into dusts and reducing gas, so as to supply the separated reducing gas to a lower part of the final fluidized bed reactor, dusts having a larger particle sizes in the separated dusts to the melter-gasifier again, and fine dusts having a smaller particle sizes in the separated dusts to an upper part of a gas distributor of the final fluidized bed reactor.

摘要翻译： 公开了一种熔融还原装置，其将从熔炉 - 气化器或流化床反应器排出的排气分离成灰尘和还原气体，以将它们分别供应到每个流化床反应器，其中熔融还原装置包括： 阶段式流化床反应器，通过最终还原在最终流化床反应器中完成反应的细铁矿石制造熔融生铁的熔炉气化器，以及灰尘分离装置，其将排出的气体从熔化炉 - 气化器成为灰尘和还原气体，以便将分离的还原气体供应到最终流化床反应器的下部，再次将分离的粉尘中具有较大颗粒尺寸的粉尘和具有较小颗粒的细粉尘 分离的灰尘中的尺寸与最终流化床反应器的气体分布器的上部分。

公开(公告)号：US20020033075A1

公开(公告)日：2002-03-21

申请号：US09892546

申请日：2001-06-28

申请人： MIDREX INTERNATIONAL B.V.

发明人： Shoichi Kikuchi ,  Yasuhiro Tanigaki ,  Koji Tokuda ,  Osamu Tsuchiya ,  Shuzo Ito

IPC分类号： C21B011/00

CPC分类号： C21B13/10 ,  C21B13/105 ,  Y02P10/136 ,  Y02P10/216

摘要： The present invention provides a method of producing metallic iron nuggets with a high yield and good productivity, and more particularly a method which can produce metallic iron nuggets which have a high Fe purity and are excellent in transporting and handling due to a large grain diameter with a high yield and good productivity, when they are produced by reducing and melting raw material containing iron oxide such as iron ore and carbonaceous reducing agent such as coke. The method of producing metallic iron nuggets comprises steps of: heating raw material containing carbonaceous reducing agent and iron oxide-containing material in a reducing/melting furnace, reducing iron oxide in the raw material, and then heating and melting the metallic iron produced by the reduction and simultaneously making it coalesce while separating the metallic iron nuggets from slag components characterized in that the fixed carbon content ratio as the carbonaceous reducing agent is at least 73% and the volatile matter content in the raw material is not more than 3.9% are used, and the mixing content of carbonaceous reducing agent is restrained to be not more than 45% in relation to the iron oxide components, which is contained in the iron oxide-containing material of the raw material.

摘要翻译： 本发明提供一种以高产率和高生产率生产金属铁块的方法，更具体地说，一种能够生产具有高Fe纯度并且由于粒径大而具有优异运输和处理性能的金属铁块的方法 当通过还原和熔化含铁氧化物的原料如铁矿石和碳质还原剂如焦炭生产时，产率高，生产率高。 制造金属铁块的方法包括以下步骤：在还原/熔融炉中加热含有碳质还原剂和含氧化铁的材料的原料，还原原料中的氧化铁，然后加热和熔化由 还原并同时使其结合，同时将金属铁块与炉渣组分分离，其特征在于作为碳质还原剂的固定碳含量比至少为73％，原料中的挥发物含量不超过3.9％ ，碳原子还原剂的混合量相对于原料的含氧化铁材料中含有的氧化铁成分被抑制在45％以下。

公开(公告)号：US20020024172A1

公开(公告)日：2002-02-28

申请号：US09916588

申请日：2001-07-30

申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

发明人： Yoshihiro Urabe ,  Takao Umeki ,  Masahiko Tetsumoto ,  Toshikatsu Uchida ,  Sumito Hashimoto

IPC分类号： C21B011/00

CPC分类号： F27D3/0033 ,  F27D15/00

摘要： Heat-treated products discharged from a discharge port of a movable hearth type heat treatment furnace, for example a rotary hearth type reduction furnace are discharged to a sorting means, the heat-treated products that foreign substances have been removed, are discharged through a seal leg into which anti-reoxidation gas is blown from a gas blowing nozzle, to a receiving recess of a receiving pan provided within a case having a hopper attached thereto which is a feeding means, and then a scraper is swung to discharge the heat-treated products deposited on the top surface of the receiving recess from the longitudinal ends of the receiving pan and simultaneously to quantitatively feed it to a molten iron-manufacturing furnace 8, which is a downstream side facility, from the bottom side discharge port of the casing having a hopper attached thereto, and in addition, dust removal/cooling means for produced gas of the molten iron-manufacturing furnace and means for regulating the amount of produced gas are provided.

摘要翻译： 从可动式炉床式热处理炉（例如旋转炉床式还原炉）的排出口排出的热处理物质排出到分选机构，被除去的异物的热处理物通过密封件 将防再氧化气体从气体吹出喷嘴吹送到容纳盘的容纳槽中的接收凹槽，该接收盘设置在具有作为进料装置的附着有漏斗的壳体内，然后刮除刮板以将热处理 产品从容纳盘的纵向端部沉积在接收凹槽的顶表面上，并同时定量地从作为下游侧设备的铁水制造炉8从壳体的底侧排出口定量供给， 附着在其上的料斗，另外还有用于生产铁水的炉子的产生气体的除尘/冷却装置和用于调节 提供生产的气体。

公开(公告)号：US20030061909A1

公开(公告)日：2003-04-03

申请号：US10289290

申请日：2002-11-07

申请人： KABUSHIKI KAISHA KOBE SEIKO SHO

发明人： Takuya Negami ,  Kazuo Kunii ,  Shinichi Inaba ,  Masataka Shimizu ,  Isao Kobayashi ,  Yoshimichi Takenaka ,  Toshihide Matsumura ,  Akira Uragami ,  Takashi Kujirai ,  Osamu Tsuchiya ,  Kimio Sugiyama ,  Shuzo Ito ,  Shoichi Kikuchi

IPC分类号： C21B011/00

CPC分类号： C21B13/0046 ,  C21B13/105

摘要： A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.