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    Method for the production of refractory bricks
    75.
    发明授权
    Method for the production of refractory bricks 失效
    耐火砖生产方法

    公开(公告)号：US5306451A

    公开(公告)日：1994-04-26

    申请号：US981616

    申请日：1992-11-25

    申请人： Klaus Wachter

    发明人： Klaus Wachter

    IPC分类号： C04B35/12 ,  C04B35/047 ,  C04B38/00

    CPC分类号： C04B35/0476

    摘要： A method for the production of refractory bricks, major components of which are a high proportion of chromium oxide and a small proportion of titanium oxide, makes provision for the chromium oxide and titanium oxide to be mixed, moulded and fired in a reducing atmosphere in order to achieve a solid solution of the titanium oxide in the chromium oxide. The fired intermediate units are then crushed. Other units are then formed from the sieve fractions of the crushed intermediate units and these are fired in a second firing operation to produce the refractory bricks. Non-fired chromium oxide is added to the sieve fractions of the crushed intermediate units and mixed in with this. The other units which are to be reductive-fired in the second firing operation are formed from this mixture.

    摘要翻译： 耐火砖的制造方法，其主要成分是高比例的氧化铬和小比例的氧化钛，提供氧化铬和氧化钛在还原气氛中进行混合，模塑和烧制 以获得二氧化钛在氧化铬中的固溶体。 然后将烧制的中间单元压碎。 然后由破碎的中间单元的筛分部分形成其它单元，并在第二次烧制操作中烧制，以制造耐火砖。 将未烧制的氧化铬加入到破碎的中间体的筛分部分中并与之混合。 在第二次点火操作中要还原烧成的其它单元由该混合物形成。

    Chromia-magnesia refractory body
    76.
    发明授权
    Chromia-magnesia refractory body 失效
    铬 - 氧化镁难熔体

    公开(公告)号：US5010046A

    公开(公告)日：1991-04-23

    申请号：US488162

    申请日：1990-03-05

    申请人： Anthony K. Butkus ,  Scott D. Martin

    发明人： Anthony K. Butkus ,  Scott D. Martin

    IPC分类号： C04B35/047 ,  C04B35/12

    CPC分类号： C04B35/0473 ,  C04B35/12

    摘要： An improved chromia-magnesia refractory product of co-fused chromia-magnesia grains bonded by an in situ formed chromia bond is prepared by substantially avoiding the presence of grains that will pass through a screen with openings of 150 microns. The resultant product exhibits improved resistance to silicieous materials such as are present in coal slags.

    摘要翻译： 通过原位形成的氧化铬键结合的共熔融氧化铬 - 氧化镁晶粒的改进的氧化铬 - 氧化镁耐火产物通过基本上避免存在将通过具有150微米的开口的筛网而制备。 所得产品对诸如存在于煤渣中的硅质材料具有改进的抗性。

    Refractory bodies for corrosive environments
    77.
    发明授权
    Refractory bodies for corrosive environments 失效
    腐蚀性环境的耐火材料

    公开(公告)号：US4483932A

    公开(公告)日：1984-11-20

    申请号：US549114

    申请日：1983-11-07

    申请人： Malcolm E. Washburn ,  Charles W. Taylor

    发明人： Malcolm E. Washburn ,  Charles W. Taylor

    IPC分类号： C04B35/42 ,  C04B35/047 ,  C10J3/08 ,  C04B35/04 ,  C04B35/12

    CPC分类号： C10J3/08 ,  C04B35/047 ,  C04B35/0473 ,  C10J3/526 ,  C10J3/74 ,  C10J3/84 ,  C10J2300/093

    摘要： The gasification of coal can be accomplished more efficiently if it is operated at a temperature high enough so that the mineral constituents of the coal will form a molten slag which can be continuously removed from the gasifier during operation. Proper control of such a process requires careful temperature control, but the molten coal slag has been found to be corrosive to most thermocouple materials and to conventional refractory ceramics which are used as thermocouple protection tubes in other environments. It has now been found that magnesium chromite serves satisfactorily as a corrosion resistant refractory material in molten coal slags, and that thermocouple protection tubes of this material can be made by isostatic pressing of granular magnesium chromite and subsequent firing.

    摘要翻译： 如果在足够高的温度下操作煤，则煤的气化可以更有效地实现，使得煤的矿物成分形成熔融炉渣，其可以在操作期间从气化炉中连续除去。 对这种过程的适当控制需要仔细的温度控制，但是已经发现熔融煤渣对大多数热电偶材料和用作其他环境中的热电偶保护管的常规耐火陶瓷是腐蚀性的。 现在已经发现，铬酸钡在熔融煤渣中作为耐腐蚀耐火材料令人满意，并且该材料的热电偶保护管可以通过等压挤压颗粒状亚铬酸镁并随后烧制而制成。

    Chromia magnesia refractory
    78.
    发明授权
    Chromia magnesia refractory 失效
    铬氧化镁耐火材料

    公开(公告)号：US4435514A

    公开(公告)日：1984-03-06

    申请号：US395550

    申请日：1982-07-06

    申请人： Stephen D. Hartline

    发明人： Stephen D. Hartline

    IPC分类号： C04B35/42 ,  C04B35/047 ,  C04B35/04 ,  C04B35/12

    CPC分类号： C04B35/0473

    摘要： A chromia-magnesia based refractory product made up of fused chromia-magnesia grains bonded by an in situ formed chromia-magnesia bond. The product is very dense and especially suitable when used to process molten materials which involve coal slag.

    摘要翻译： 由通过原位形成的氧化铬 - 氧化镁键结合的熔融氧化铬 - 氧化镁晶粒构成的氧化铬 - 氧化镁基耐火材料。 该产品非常致密，特别适用于加工涉及煤渣的熔融材料。