Repairing material of a brick
 Disclosed herein are a refractory repairing material for repairing a brick comprising a mixture of 70 to 80 wt % of alumina having not more than 1 mm of grain size, which comprises 25 to 30 wt % of the above amount with a grain size not passing through a 325 mesh and 45 to 50 wt % of the above amount with a grain size passing through a 325 mesh; 1 to 7 wt % of carbonaceous material having a grain size passing through a 60 mesh; 1 to 5 wt % of magnesia having a grain size passing through a 325 mesh; and 10 to 25 wt % of aluminum phosphate, and a method of repairing a plate-like brick. 
Toshiba Ceramics Co., Ltd. Sumitomo Metal Industries, Ltd.
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Toshio Hiroshi Akira Hiroshi Takao Kenichi Masamichi
Kawamura Yamada Takahashi Hikima Sugino Mukoyama Asai