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    Non-slumping sprayable refractory castables containing thermal black
    3.
    发明申请
    Non-slumping sprayable refractory castables containing thermal black 失效

    公开(公告)号：US20020022567A1

    公开(公告)日：2002-02-21

    申请号：US09942158

    申请日：2001-08-29

    发明人： Xiangmin Li ,  Robert M. Cullen

    IPC分类号： C04B035/52

    CPC分类号： C04B35/66

    摘要： An essentially non-slumping sprayable refractory castable composition that is applied without forms is disclosed comprising (a) a tempered, pumpable first component comprising (i) one hundred weight percent of a refractory composition comprising from about 60 to 90 weight percent of a refractory aggregate, from about 2 to 25 weight percent of an ultrafine refractory material having an average particle diameter size less than or equal to about 3 microns, from about 0.5 to 15 weight percent of a binder, and from about 0.05 to 2.0 weight percent of a dispersant, wherein all or a portion of the ultrafine refractory material comprises a thermal black such that the refractory composition comprises from about 2 to 15 weight percent of the thermal black, and (ii) from about 3 to 10 weight percent water based upon 100 weight percent of the refractory composition; and (b) a second component comprising a flocculating agent, wherein the second component is added to the first component for achieving installation of the sprayable refractory castable composition in an amount to prevent slumping. A method of installing the sprayable refractory castable composition is also disclosed.

    Carbonaceous refractory and method for preparing the same
    7.
    发明申请
    Carbonaceous refractory and method for preparing the same 有权
    碳质耐火材料及其制备方法

    公开(公告)号：US20020183189A1

    公开(公告)日：2002-12-05

    申请号：US09980366

    申请日：2001-11-28

    发明人： Akio Ishii ,  Hitoshi Nakamura ,  Michio Nitta ,  Tsutomu Wakasa ,  Hirofumi Mikami ,  Yoshiyuki Yamagami

    IPC分类号： C04B035/52

    CPC分类号： C04B35/532 ,  C04B2235/3206 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3248 ,  C04B2235/3418 ,  C04B2235/3463 ,  C04B2235/3843 ,  C04B2235/3856 ,  C04B2235/3886 ,  C04B2235/404 ,  C04B2235/422 ,  C04B2235/425 ,  C04B2235/428 ,  C04B2235/5436 ,  C04B2235/604 ,  C04B2235/80 ,  C04B2235/9676 ,  C21B7/06 ,  C21B7/14 ,  F27B1/14 ,  F27B3/14 ,  F27D1/0006 ,  F27D1/0043

    摘要： A carbonaceous refractory material is produced by adding an organic binder to a mixture containing a carbonaceous material comprising a carbonaceous raw material comprising calcined anthracite, calcined coke, artificial graphite or natural graphite or a mixture thereof at 50 to 85% as the principal raw material, alumina particle at 5 to 15%, metal silicon particle at 5 to 15%, and one or two or more of titanium carbide powder, titanium nitride powder and titanium carbonitride powder at 5 to 20% in total, kneading and molding the resulting mixture and baking the molded article under non-oxidizing atmosphere. By using the carbonaceous refractory material as the inner lining material for the side wall and bottom of blast furnace hearth, the consumption of the inner lining material due to the dissolution thereof in melted pig iron can be decreased, and simultaneously, the abrasion due to the flow of melted pig iron can be decreased, which works to prolong the life of the blast furnace.

    摘要翻译： 通过向包含煅烧无烟煤，煅烧焦炭，人造石墨或天然石墨或其混合物的碳质原料的碳质材料的混合物中添加有机粘合剂，以50〜85％为主要原料，制备碳质耐火材料， 5至15％的氧化铝颗粒，5至15％的金属硅颗粒和5至20％的碳化钛粉末，氮化钛粉末和碳氮化钛粉末中的1种或2种以上，将所得混合物和 在非氧化性气氛下烘烤成型品。 通过使用碳质耐火材料作为高炉炉膛的侧壁和底部的内衬材料，可以减少由于其在熔融生铁中的溶解而导致的内衬材料的消耗，同时，由于 可以减少熔融生铁的流动，从而延长高炉的使用寿命。

    Filler sand for a ladle tap hole valve
    9.
    发明申请
    Filler sand for a ladle tap hole valve 审中-公开
    钢包水龙头孔填料砂

    公开(公告)号：US20020128144A1

    公开(公告)日：2002-09-12

    申请号：US09989548

    申请日：2001-11-20

    申请人： NKK CORPORATION

    发明人： Manabu Tano ,  Hideto Takasugi ,  Hirohisa Nakajima ,  Akira Shirayama ,  Manabu Arai ,  Atsushi Tsunoda ,  Masaki Komatani

    IPC分类号： C04B035/52 ,  B32B005/16

    CPC分类号： F27D3/1536 ,  B22D41/46 ,  C21C5/4653 ,  Y10T428/2982

    摘要： A filler sand for a ladle tap hole valve contains 45 to 55 mass % of zircon sand, 30 to 40 mass % of chromite sand and 10 to 20 mass % of silica sand and is blended externally with 0.05 to 5 mass % of carbon black calculated based on the total amount of the sands; or contains 30 to 90 mass % of chromite sand and 10 to 70 mass % of silica sand and is optionally blended externally with 0.05 to 5 mass % of carbon black, wherein 95 mass % or more of the chromite sand consists of particles having diameters falling within a range of 150 to 850 nullm, 60 mass % or more of the chromite sand consists of particles having diameters falling within a range of 212 to 600 nullm, 95 mass % or more of the silica sand consists of particles having diameters falling within a range of 300 to 1180 nullm, and 90 mass % or more of the silica sand consists of particles having diameters falling within a range of 600 to 1180 nullm.

    摘要翻译： 钢包龙头孔阀的填砂砂含有45〜55质量％的锆石砂，30〜40质量％的铬铁矿砂和10〜20质量％的硅砂，并与0.05〜5质量％的炭黑混合， 基于砂的总量; 或含有30〜90质量％的铬铁矿砂和10〜70质量％的硅砂，任选地与0.05〜5质量％的炭黑混合，其中，95质量％以上的铬铁矿由直径下降的粒子构成 在150〜850μm的范围内，铬铁矿的60质量％以上的粒子由直径在212〜600μm的范围的粒子构成，所述硅砂的95质量％以上的粒子由直径为 300〜1180μm的范围，和90质量％以上的硅砂由直径在600〜1180μm的范围内的粒子构成。