| 摘要 |
Provided is a manufacturing method of a recycled plate for a sliding nozzle, which is capable of repairing damage of a plate used for a sliding nozzle to extend an endurance period and widens a range of the used plate as a target for recycling. The manufacturing method of the recycled plate performs, on a plate used for the sliding nozzle, recycling processing including impregnating a matrix of the plate that is formed by a refractory brick with liquid containing at least one of tar and pitch, heating the plate impregnated with the liquid to remove a volatile component, and filling a recess having an opening width and a depth of equal to or smaller than 1 mm, which is present on a surface of the plate after having been impregnated with the liquid and heated, with a thermal expandable refractory material of which volume is increased by at least one of generation reaction and change in a crystal structure with heating when the plate attached to the sliding nozzle is used. 44 |
