| 摘要 |
PROBLEM TO BE SOLVED: To obtain a liquid glaze capable of easily producing a product analo gous to a salt-glazed roofing tile and other products having high values added. SOLUTION: The liquid glaze comprising an aqueous solution is prepared by adding 100 kg sodium chloride and 100 kg sodium carbonate to a ball mill and, after further adding 400 l water to the ball mill, mixing and pulverizing all additives. A reddish brown roofing tile having a gloss analogous to a salt- glazed roofing tile is obtained by dipping a roofing tile body, which has been biscuit-fired at 1,000 deg.C, into the liquid glaze for 1 min, then, after taking the roofing tile body out of the liquid glaze, drying and firing it at 1,150 deg.C (maximum temp.) for 3 hr using a normal single kiln used for production.
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