PURPOSE: To extend service life of a plate brick by flowing refractory repairing material mixing the specific grain size of alumina, carboneceous raw material, magnesia and Al phosphate at each the prescribed wt.% to damaged part of the plate brick.
CONSTITUTION: A ring 5 having only a little smaller diameter than a hole part 3 of the damaged plate brick 1 is inserted and the repairing material 4 is filled to the damaged part 2 from the periphery thereof and naturally hardened. Then, the repairing material 4 is constituted of mixed refractory of 70W80wt.% alumina having ≤1mm, 1W7% carboneceous raw material having 60 mesh under, 1W5% magnesia having 325 mesh under and 10W25% Al phosphate. The alumina component gives sufficient erosion resistance and refractoriness, and the magnesia and the Al phosphate give sufficient strength. By this method, the service life of the plate brick 1 is extended.
KAWAMURA TOSHIO
ASAI MASAMICHI
YAMADA HIROSHI
MUKOYAMA KENICHI
TAKAHASHI AKIRA
HIKIMA HIROSHI
SUMITOMO METAL IND
| JPS5954671A | 1984-03-29 | |||
| JPS577874A | 1982-01-16 |