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    Iron Ore Pellets
    2.
    发明申请
    Iron Ore Pellets 有权

    公开(公告)号：US20210108284A1

    公开(公告)日：2021-04-15

    申请号：US16605736

    申请日：2018-04-18

    Applicant: Binding Solutions Ltd

    Inventor： Nigel Pickett

    IPC: C22B1/245 ,  C21C5/52

    Abstract: The application describes pellets comprising particulate iron ore and between 0.05 and 1.0% by weight of an organic binder.
    The use of such pellets in electric arc furnaces to produce steel is also described.

    Reduced iron manufacturing method
    3.
    发明授权
    Reduced iron manufacturing method 有权

    公开(公告)号：US10683562B2

    公开(公告)日：2020-06-16

    申请号：US15577151

    申请日：2016-04-26

    Applicant: Kobe Steel, Ltd.

    Inventor： Yui Hosono ,  Masaki Shimamoto ,  Takao Harada ,  Shingo Yoshida ,  Shoichi Kikuchi ,  Taiji Hatakeyama

    IPC: C22B1/24 ,  C22B1/245 ,  C21B13/00

    Abstract: The reduced iron manufacturing method of the present invention includes preparing an agglomerate by agglomerating a mixture containing an iron oxide-containing substance and a carbonaceous reducing agent, and preparing reduced iron by heating the agglomerate to reduce iron oxide in the agglomerate, characterized in that Expression (I) as follows is satisfied: Cfix×Xunder105/OFeO≤51  (I) where OFeO is the mass percentage of oxygen contained in the iron oxide in the agglomerate, Cfix is the mass percentage of total fixed carbon contained in the agglomerate, and Xunder105 is the mass percentage of particles having a particle diameter of 105 μm or less with respect to the total mass of particles configuring the carbonaceous reducing agent.

    Charge carbon briquette for electric arc steelmaking furnace
    5.
    发明授权
    Charge carbon briquette for electric arc steelmaking furnace 有权

    公开(公告)号：US10392574B2

    公开(公告)日：2019-08-27

    申请号：US15665794

    申请日：2017-08-01

    Applicant: Kimmel's Metallurgical Products LLC

    Inventor： Willard K. McClintock ,  Willard K. McClintock, Jr. ,  John D. Shoue

    IPC: C10L5/02 ,  C22B7/02 ,  C22B1/242 ,  C10L5/14 ,  C10L5/40 ,  C22B1/245 ,  C10L5/12 ,  C10L5/36 ,  C21C5/52

    Abstract: A method of introducing carbon to an Electric Arc Furnace (EAF) used for melting steel, and a composition of matter including carbon, and made in a briquette form. The composition comprises between 45 and 96 weight percent of a carbon-containing material, between 2 and 30 weight percent of a basic oxide, and between 2 and 25 weight percent of a binder material. The method comprises mixing between 45 and 96 weight percent of a carbon-containing material, between 2 and 30 weight percent of a basic oxide, and between 2 and 25 weight percent of a binder material to form a solid material mixture; compressing individual portions of the solid material mixture into compressed briquettes; curing the compressed briquettes into solid briquettes; and adding the solid briquettes into the molten steel in the electric arc steelmaking furnace.

    METHOD FOR PRODUCING GRANULAR METALLIC IRON
    7.
    发明申请
    METHOD FOR PRODUCING GRANULAR METALLIC IRON 审中-公开

    公开(公告)号：US20170283905A1

    公开(公告)日：2017-10-05

    申请号：US15509729

    申请日：2015-09-03

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

    Inventor： Yui HOSONO ,  Masaki SHIMAMOTO ,  Shingo YOSHIDA ,  Masataka TATEISHI

    IPC: C22B1/16 ,  C22B1/245

    CPC classification number: C22B1/16 ,  C21B13/00 ,  C22B1/244 ,  C22B1/245

    Abstract: A method for producing granular metallic iron of the present invention includes: an agglomeration step of obtaining agglomerates through agglomeration of a mixture that contains an iron oxide-containing material and a carbonaceous reducing agent; and a granulation step of obtaining granular metallic iron by heating the agglomerates, reducing iron oxides in the agglomerates, aggregating generated metallic iron to be granular while separating the metallic iron from slag generated as a by-product, and thereafter cooling and solidifying the metallic iron, wherein agglomerates satisfying all the conditions given by formulas (1) to (3) below are used as the agglomerates: (1) [(total CaO amount+total SiO2 amount+total Al2O3 amount)/total Fe amount]≧0.250; (2) (total CaO amount/total SiO2 amount)≧0.9; (3) [total Al2O3 amount/(total CaO amount+total SiO2 amount+total Al2O3 amount)]×100≧9.7. In the formulas, the total CaO amount, the total SiO2 amount, the total Al2O3 amount and the total Fe amount respectively represent the mass percentage of CaO, the mass percentage of SiO2, the mass percentage of Al2O3 and the mass percentage of Fe contained in the agglomerates.

    Process for treating iron bearing material
    9.
    发明授权
    Process for treating iron bearing material 失效
    铁轴承材料处理方法

    公开(公告)号：US5873925A

    公开(公告)日：1999-02-23

    申请号：US797117

    申请日：1997-02-10

    Applicant: Franklin G. Rinker ,  Deane A. Horne ,  James Alan Thornton

    Inventor： Franklin G. Rinker ,  Deane A. Horne ,  James Alan Thornton

    IPC: C21B13/00 ,  C21B13/08 ,  C21B13/10 ,  C22B1/24 ,  C22B1/245

    CPC classification number: C22B1/245 ,  C21B13/0046 ,  C21B13/08 ,  C21B13/105 ,  C22B1/24 ,  Y02P10/136

    Abstract: A process for treating iron-bearing material with a carbonaceous material to form a mixture, wherein the amount of carbonaceous material added exceeds the stoichiometric amount required to reduce the metal oxide to elemental metal. In one embodiment, the process also includes blending an organic binder with the mixture. The mixture is agglomerated using compaction to bond the mixture and form green compacts. The green compacts are loaded into a heated furnace and heated for about 5-12 minutes at a temperature of between about 2100.degree.-2500.degree. F. and at a CO/CO.sub.2 ratio of about 1.5-2.5 proximate the discharge area to reduce the iron oxide containing compacts to compacts containing elemental iron and an excess amount of carbonaceous material wherein the excess amount of carbonaceous material counteracts re-oxidation of the elemental iron. The reduced compacts are then discharged from the furnace. The furnace includes counterflow and co-flow exhaust to maintain the charge area and the discharge area of the furnace at a pressure about equal to atmospheric pressure.

    Abstract translation: 用含碳材料处理含铁材料以形成混合物的方法，其中添加的碳质材料的量超过将金属氧化物还原成元素金属所需的化学计量量。 在一个实施方案中，该方法还包括将有机粘合剂与该混合物混合。 使用压实将混合物凝聚以粘合混合物并形成生坯。 将生坯装入加热炉中，在约2100°-2500°F的温度下加热约5-12分钟，在排放区附近以约1.5-2.5的CO / CO 2比加热约5-12分钟，以减少铁 含氧化物的成形体成型为含有元素铁和过量的含碳材料，其中过量的碳质材料抵消元素铁的再氧化。 然后将还原的压块从炉中排出。 该炉包括逆流和共流排气，以将炉的计量区域和排放面积维持在等于大气压的压力。

    Sulphate agglomeration
    10.
    发明授权
    Sulphate agglomeration 失效
    硫酸盐聚集

    公开(公告)号：US5516976A

    公开(公告)日：1996-05-14

    申请号：US295056

    申请日：1994-08-26

    Applicant: Neil L. Smith ,  Gregory J. Saunders

    Inventor： Neil L. Smith ,  Gregory J. Saunders

    IPC: C22B1/16 ,  C22B1/243 ,  C22B1/245 ,  C22B7/02

    CPC classification number: C22B7/02 ,  C22B1/16 ,  C22B1/243 ,  C22B1/245 ,  Y02P10/212

    Abstract: A process for forming agglomerates of metallurgical dust containing metal sulphates for recycling to extractive processes includes adding lime particles and a small amount of water, forming a mixture and extruding the damp mixture and allowing the extruded agglomerates to become hard and shape retentive. The material agglomerated may be water soluble metal sulphate containing particles or mixtures of such particles with other value metal bearing waste or by-products of metallurgical processes. Optionally additional binding agents comprising cement and hydrocarbonaceous substances such as wax may be added to the mixture.

    Abstract translation: 用于形成含有金属硫酸盐的冶金粉尘的附聚物用于再循环至萃取过程的方法包括加入石灰颗粒和少量水，形成混合物并挤出湿混合物并使挤出的附聚物变硬并保持形状。 聚集的材料可以是含有水溶性金属硫酸盐的颗粒或这些颗粒的混合物与其它含有金属的废物或冶金方法的副产物。 任选地，可以将包含水泥和烃类物质如蜡的另外的粘合剂加入混合物中。

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