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公开(公告)号:US4648097A
公开(公告)日:1987-03-03
申请号:US793289
申请日:1985-10-31
CPC分类号: H05B7/101
摘要: An electrode for an electric arc furnace includes a cooled metal sheath covered with a refractory protective jacket. A plurality of refractory anchors are fixed to the exterior of the sheath, and the anchors are spaced from each other. The protective jacket includes an undercoat on the exterior of the sheath and a protective layer over the undercoat and extending between the anchors. The protective layer is formed of a refractory material such that, at the operating temperature of the electrode, the protective layer has an inner zone which is thermoplastic and an outer zone which is rigid or which is a high-viscosity melting phase.
摘要翻译: 用于电弧炉的电极包括用耐火保护套覆盖的冷却金属护套。 多个耐火锚固件固定在护套的外部,并且锚定件彼此间隔开。 护套包括在护套的外部的底涂层和在底涂层上的保护层,并且在锚固件之间延伸。 保护层由耐火材料形成,使得在电极的工作温度下,保护层具有热塑性的内部区域和刚性的或者是高粘度熔融相的外部区域。
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公开(公告)号:US4829538A
公开(公告)日:1989-05-09
申请号:US711630
申请日:1985-03-14
CPC分类号: F27D11/10 , C21C5/5229 , F27B3/14 , H05B7/06 , Y02P10/216
摘要: A hearth for use in a furnace, which comprises an upper layer of magnesia containing chromic oxide, a lower layer containing graphite and an organic bonding agent, and an intermediate layer of a mixture of the materials forming the upper and lower layers. The hearth is particularly useful in DC arc funaces, in which steel rods embedded in the bottom act as the anode. The hearth has improved service durability.
摘要翻译: 一种用于炉的炉床,其包括含有氧化铬的上层氧化镁,含有石墨的下层和有机粘合剂,以及形成上层和下层的材料的混合物的中间层。 炉底在DC电弧炉中特别有用,其中埋在底部的钢棒充当阳极。 炉膛提高了使用寿命。
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3.
公开(公告)号:US4760039A
公开(公告)日:1988-07-26
申请号:US073070
申请日:1987-07-13
申请人: Hartmut Hlawatschek
发明人: Hartmut Hlawatschek
IPC分类号: C04B35/04 , C04B35/043 , C04B35/66 , C04B35/06
CPC分类号: C04B35/6303 , C04B35/043 , C04B35/66 , C04B2111/00155 , C04B2235/3205 , C04B2235/3217 , C04B2235/3241
摘要: Refractory compositions which can be gun-applied, or refractory, unfired shapes containing sintered magnesite and/or sintered dolomite as the principal refractory component, 0.5 to 5% by weight of bentonite, 1 to 5% by weight of aluminum sulfate and 0.5 to 5% by weight of an alkaline earth compound, characterized by the fact that they contain magnesium hydroxide and/or caustic-calcined MgO as the alkaline earth compound. The compositions and shapes of the invention have the advantage that they do not exhibit binder migration, and no damping-reduction cracks or chipping occurs therein.
摘要翻译: 含有烧结菱镁矿和/或烧结白云石作为主要耐火成分的0.5〜5重量%的膨润土,1〜5重量%的硫酸铝和0.5〜5重量%的耐火组合物, 重量百分比的碱土金属化合物,其特征在于它们含有氢氧化镁和/或苛性煅烧的MgO作为碱土金属化合物。 本发明的组合物和形状的优点在于它们不显示粘合剂迁移,并且在其中不发生阻尼减少裂纹或碎裂。
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