会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明公开
    • MAGNESIA CARBON BRICK
    • MAGNESIUMOXID-KOHLENSTOFF斯坦
    • EP2952494A1
    • 2015-12-09
    • EP14745785.7
    • 2014-01-29
    • Krosakiharima Corporation
    • SHIOHAMA, MichiharuTANAKA, MasatoMATSUO, YoshinoriYOSHITOMI, Jouki
    • C04B35/043
    • C04B35/0435C04B2235/3205C04B2235/3821C04B2235/402C04B2235/425C04B2235/428C04B2235/5427C04B2235/5436C04B2235/5472C04B2235/652C04B2235/6567C04B2235/77C04B2235/9692
    • In the present invention, the attempt was made to increase the denseness (to lower the porosity) of a magnesia carbon brick furthermore thereby providing the magnesia carbon brick having a high durability never found in the past. The magnesia carbon brick of the present invention comprises a magnesia raw material and a graphite, wherein the magnesia carbon brick contains the graphite with the amount thereof in the range of 8% or more by mass and 25% or less by mass and the magnesia raw material with the amount thereof in the range of 75% or more by mass and 92% or less by mass, the both amounts being relative to the total amount of the magnesia raw material and the graphite; as a grain size distribution of the magnesia raw material, the magnesia raw material having particle diameter of in the range of 0.075 mm or more and 1 mm or less is blended with the amount thereof being 35% or more by mass relative to the total amount of the magnesia raw material and the graphite, and a mass ratio of the magnesia raw material having the particle diameter of in the range of 0.075 mm or more and 1 mm or less to the magnesia raw material having the particle diameter of less than 0.075 mm is 4.2 or more; and an apparent porosity thereof after firing in reducing atmosphere for 3 hours at 1400°C is 7.8% or less.
    • 在本发明中,尝试增加氧化镁碳砖的致密度(降低孔隙率),从而提供具有过去从未发现的高耐久性的氧化镁碳砖。 本发明的氧化镁碳砖包括氧化镁原料和石墨,其中氧化镁碳砖含有其量为8质量%以上且25质量%以下的石墨,氧化镁原料 其量为75质量%以上且92质量%以下的材料,两者的量相对于氧化镁原料和石墨的总量; 作为氧化镁原料的粒度分布,将粒径为0.075mm以上且1mm以下的氧化镁原料配合成相对于总量的35质量%以上的量 的氧化镁原料和石墨,以及粒径为0.075mm以上至1mm以下的氧化镁原料与粒径小于0.075mm的氧化镁原料的质量比 是4.2以上; 并且在1400℃下在还原气氛中烧成3小时后的表观孔隙率为7.8%以下。