Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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The Synthesis of Anorthite by Addition of Flux

Flux 첨가에 의한 Anorthite 합성에 관한 연구

  • Ahn, Young-Pil (Dept. of Inorganic Materials Engineering Han Yang Univ) ;
  • Choi, Suk-Hong (Dept. of Inorganic Materials Engineering Han Yang Univ) ;
  • Lee, Kwang (Dept. of Chemical Engineering Kyung Nam Univ)
  • 안영필 (한양대학교 공대 요업과) ;
  • 최석홍 (한양대학교 공대 요업과) ;
  • 이광 (경남대 화공과)
  • Published : 1979.02.01
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Abstract

The Anorthite is useful compound for some ceramic industries but it is difficult to produce Anorthite because of its high melting point (1553$^{\circ}C$) and narrow firing range. On this study, glass frit was added to Anorthite batch composition to widen firing range and lower melting point. After mixing a glass frit $(Na_2O-CaO-6SiO_2)$ with Anorthite, it was melted and quenched. Ratio of Anorthite vs. glass frit was 9 : 1, 8.5 : 1.5, 8 : 2, 7.5 : 2.5, 7 : 3. In those batch composition added amount of $No_2O$ were between 1.3wt.% and 3.9wt.%. To find the thermal change of the quenched, D.T.A. was surveyed. The quenched were fired at various vitrification temperature and detected by X-Raydiffraction analysis. With addition of glass frit, firing range and vitrification temperature of Anorthite was 100~15$0^{\circ}C$ and 1050~115$0^{\circ}C$ respectively. Optimum amount of glass frit was 20wt.% for the upper mentioned.

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References

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