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    The carbon-containing refractories
    1.
    发明专利
    The carbon-containing refractories 有权

    公开(公告)号：JP4791761B2

    公开(公告)日：2011-10-12

    申请号：JP2005151442

    申请日：2005-05-24

    Applicant: 黒崎播磨株式会社

    Inventor： 利之 保木井 ,  勝美 森川 ,  孝一 波連 ,  博之 淵本 ,  俊博 駿河

    IPC: C04B35/00 ,  B22D11/10 ,  C01B31/02 ,  C04B35/043 ,  F27D1/00

    CPC classification number: B82Y30/00

    Abstract: PROBLEM TO BE SOLVED: To provide a carbon-containing refractory having both excellent strength and thermal shock resistance, keeping excellent slag infiltration resistance and having sufficient durability. SOLUTION: The carbon-containing refractory is produced by adding ≤5 mass% fullerene in outer percentage and 0.5-5 mass% pitch in outer percentage with a thermosetting organic resin as an organic binder into magnesia based, spinel based, alumina based refractory raw material powder, kneading, forming and heat-treating. In the carbon-containing refractory, carbon nanofiber having 5-10 nm diameter and 100-300 nm length and is present in a bonded structure and the carbon-containing refractory is used suitably for a dipping nozzle or a long nozzle. COPYRIGHT: (C)2006,JPO&NCIPI

    Low carbonaceous magnesia carbon brick
    7.
    发明专利
    Low carbonaceous magnesia carbon brick 有权

    公开(公告)号：JP4681456B2

    公开(公告)日：2011-05-11

    申请号：JP2006000392

    申请日：2006-01-05

    Applicant: 黒崎播磨株式会社

    Inventor： 利之 保木井 ,  章二 吉田 ,  聡 坪井 ,  英一郎 波多江 ,  博之 淵本

    IPC: C04B35/043 ,  B22D41/02 ,  C04B35/66 ,  F27D1/00

    Abstract: PROBLEM TO BE SOLVED: To impart a strength and spalling resistance equivalent to a magnesia carbon brick containing a comparatively large amount of graphite, to a low carbon magnesia-containing fire-resistant unburned brick containing chromium, while preventing occurrence of a carbon pickup and maintaining superior corrosion resistance. SOLUTION: The low carbonaceous magnesia carbon brick is obtained by adding an organic binder to a fire-resistant raw material mixture consisting of 90-99 mass% of a magnesia-based raw material, 0.5-5 mass% of a flake graphite, and 0.3-10 mass% of metal chromium and/or a chromium alloy; kneading; molding and heat-treating; and its fixed carbon content is 0.5-7 mass%. The magnesia-based raw material in the fire-resistant raw material mixture of this low carbon magnesia carbon brick is occupied by particles having particle sizes from larger than 10 μm to 500 μm by 20-50 mass%, and the amount of particles having a particle size of 10 μm or smaller is 5 mass% of the fire-resistant raw material mixture. COPYRIGHT: (C)2007,JPO&INPIT

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