Charge carbon briquette for electric arc steelmaking furnace

    公开(公告)号:US10392574B2

    公开(公告)日:2019-08-27

    申请号:US15665794

    申请日:2017-08-01

    摘要: 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 TO TRANSFORM BULK MATERIAL
    7.
    发明申请
    METHOD TO TRANSFORM BULK MATERIAL 有权
    改变大块材料的方法

    公开(公告)号:US20110167715A1

    公开(公告)日:2011-07-14

    申请号:US13046448

    申请日:2011-03-11

    摘要: The invention provides low-cost, non-thermal methods to transform and beneficiate bulk materials, including low rank coals such as peat, lignite, brown coal, subbituminous coal, other carbonaceous solids or derived feedstock. High pressure compaction and comminution processes are linked to transform the solid materials by eliminating interstitial, capillary, pores, or other voids that are present in the materials and that may contain liquid, air or gases that are detrimental to the quality and performance of the bulk materials, thereby beneficiating the bulk products to provide premium feedstock for industrial or commercial uses, such as electric power generation, gasification, liquefaction, and carbon activation. The handling characteristics, dust mitigation aspects and combustion emissions of the products may also be improved.

    摘要翻译: 本发明提供了低成本,非热的方法来转化和选择散装材料,包括低等级煤如泥煤,褐煤,褐煤,次烟煤,其他碳质固体或衍生原料。 高压压实和粉碎过程相互联系,通过消除材料中存在的间隙,毛细管,孔或其他空隙来转化固体材料,并且可能含有不利于散装质量和性能的液体,空气或气体 材料,从而有益于散装产品,以提供工业或商业用途的优质原料,例如发电,气化,液化和碳活化。 产品的处理特性,减尘方面和燃烧排放也可能得到改善。

    Process for production of low temperature char during production of low temperature tars
    8.
    发明授权
    Process for production of low temperature char during production of low temperature tars 有权
    生产低温焦油时生产低温焦炭的方法

    公开(公告)号:US07909896B2

    公开(公告)日:2011-03-22

    申请号:US09994560

    申请日:2001-11-27

    申请人: Harold L. Bennett

    发明人: Harold L. Bennett

    IPC分类号: C10L5/02

    CPC分类号: C10L5/00

    摘要: An improved process for the production of smokeless (low CO2—CO emitting) boiler fuels which have been obtained by careful temperature control and the addition of waste, trash or other carbonaceous material during carbonization of various coal materials such as tar sands, bituminous coal, peat lignite, and oil shale.

    摘要翻译: 一种改进的生产无烟(低CO 2排放)锅炉燃料的方法,这些燃料是通过精心的温度控制获得的,并且在诸如焦油砂,烟煤等各种煤材的碳化期间添加废物,垃圾或其他碳质材料, 泥煤褐煤和油页岩。

    Method of forming chemically bonded agglomerates
    9.
    发明授权
    Method of forming chemically bonded agglomerates 失效
    形成化学结合的附聚物的方法

    公开(公告)号:US6001143A

    公开(公告)日:1999-12-14

    申请号:US973698

    申请日:1997-12-08

    摘要: Thermally shock-resistant chemically bonded agglomerates suitable for use as a combustible fuel or in a gasification process are produced by:(a) mixing particulate organic material comprising particulate carbonaceous fuel and/or animal excrement (such as dewatered comminuted sewage sludge) with a lignosulfonate, in the presence of water, with application of heat sufficient to maintain the lignosulfonate in fluid form, so as to deposit a film of lignosulfonate over the surface of the particulate material;(b) oxidatively conditioning the lignosulfonate coated particulate material under conditions permitting escape of water present in the mixed particulate material, the conditioning either being in the presence of calcium ions or being followed by mixing the conditioned particulate material with lime; and(c) shaping the resulting free-flowing plastic mixture under pressure, to form the thermally shock-resistant agglomerates.

    摘要翻译: PCT No.PCT / GB96 / 01446 Sec。 371 1997年12月8日第 102(e)日期1997年12月8日PCT PCT 1996年6月18日PCT公布。 公开号WO97 / 00307 日期1997年1月3日通过以下方法制备适用于可燃燃料或气化过程的耐冲击化学粘合团块:(a)混合颗粒状碳质燃料和/或动物粪便(如脱水粉碎污水 污泥)与木质素磺酸盐在水的存在下,施加足以将木质素磺酸盐保持为流体形式的热量,以便在颗粒材料的表面上沉积木质素磺酸盐膜; (b)在允许混合颗粒材料中存在的水逸出的条件下氧化调节木质素磺酸盐涂覆的颗粒材料,该调理是在钙离子的存在下或随后将调理的颗粒材料与石灰混合; 和(c)在压力下使所得到的自由流动的塑料混合物成形,以形成耐热冲击的附聚物。

    Method for manufacturing coal agglomerates for use in direct iron
smelting reducing furnace
    10.
    发明授权
    Method for manufacturing coal agglomerates for use in direct iron smelting reducing furnace 失效
    制造用于直接铁冶炼还原炉的煤聚集体的方法

    公开(公告)号:US5897674A

    公开(公告)日:1999-04-27

    申请号:US894681

    申请日:1997-08-28

    CPC分类号: C10L9/08 C10L5/06 C21B13/0066

    摘要: A method for manufacturing coal agglomerates for use in a direct smelting reducing furnace is disclosed, in which a fine coal is agglomerated at a high temperature in a simple manner, or anthracite or low free swelling coal having a low free swelling index is mixed with the fine coal, and the mixture is agglomerated at a high temperature, thereby turning the low quality coal to useful purpose. The present invention is characterized in that a fine coal having a free swelling index of 3.0 or more and a particle size of 8 mm or less, or the fine coal mixed with 70 weight % of anthracite or a low free swelling coal, is maintained at 600.degree. C. or over for 5 minutes or more, thereby manufacturing coal agglomerates for use in a direct smelting reducing furnace.

    摘要翻译: PCT No.PCT / KR96 / 00251 Sec。 371日期1997年8月28日 102(e)日期1997年8月28日PCT 1996年12月27日PCT公布。 第WO97 / 24414号公报 日本1997年7月10日公开了一种用于直接熔炼还原炉中使用的煤聚集体的方法,其中细煤在高温下以简单的方式凝聚,或具有低游离膨胀的无烟煤或低游离膨胀煤 指数与细煤混合,混合物在高温下凝聚,从而将低质量煤转化为有用目的。 本发明的特征在于,游离溶胀指数为3.0以上,粒径为8mm以下的微细煤或与70重量%的无烟煤或低游离膨胀煤混合的细煤保持在 600℃以上5分钟以上,从而制造用于直接熔炼还原炉的煤聚集体。