XU Yan, GAO Yachun, LI Meixia
(School of Light Industry, Hebei University of Science & Technology, Tangshan: 063020)
Abstract: In this research, optimum formulas for the body and glaze of once fast-fired glazed tile was obtained by making reference to their empirical recipes, conducting orthogonal experiments, using analytic instruments like SEM, rationalizing the choice of raw materials and adjusting the mol ratios of Al2O3, K2O and Na2O. The glazing quality was greatly improved after the firing process adopted a "intensifying ladder" effectively combining slow fire and fast fire. The survey of DTA, ECA and SEM for the glazed tile's body and glaze revealed desired consistency in their thermal expansion coefficients, good mutual adaptability, well-controlled glazing quality with high glossiness and litle blistering.
Keywords: glazed tile, once fire, formula of glaze and body, property of glaze and body