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    • 1. 发明授权
    • Preformed modular trefoil and installation method
    • 预制模块式三叶及安装方式
    • US06672256B2
    • 2004-01-06
    • US09873514
    • 2001-06-05
    • Ronald J. MarrLarry E. Shultz
    • Ronald J. MarrLarry E. Shultz
    • F27B700
    • F27D1/04F27B7/167F27B7/28
    • A trefoil for a rotary kiln is provided that has at least three spoke-like refractory legs. Each one of the legs extends radially outwardly from a center of the trefoil; spans approximately from the kiln shell to the center of the kiln; is pre-formed outside of the kiln for installation as a single-leg unit; and has a mating surface that preferably is uniform and even, thereby lacking interlocking features. The mating surfaces of the legs abut one another at the kiln center to provide mutual support. An alignment member, such as a pair of longitudinal angles, are welded to the kiln shell to position the legs. A corresponding method of installing the trefoil is disclosed that includes positioning and shimming the first two legs at the 4 o'clock position and 8 o'clock position, and installing the third leg at the 12 o'clock position.
    • 提供了一种用于回转窑的三叶片,其具有至少三个辐条状耐火腿。 每条腿从三叶片的中心径向向外延伸; 大约从窑壳到窑的中心; 在窑外预成型,作为单腿单元进行安装; 并且具有优选均匀且均匀的配合表面,由此缺少互锁特征。 腿的配合表面在窑中心彼此邻接以提供相互支撑。 诸如一对纵向角度的对准构件焊接到窑壳以定位腿。 公开了一种安装三叶片的相应方法,其包括在4点钟位置和8点钟位置定位和调整前两个腿部,并将第三腿部安装在12点钟位置。