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Synthesis of sphene by TiO2 combined with CaCO3 and SiO2 in solid phase and its application as ceramic opacifier.
- Source :
-
Chemical Physics . Nov2023, Vol. 575, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Synthetic sphene powder (SSP) was prepared using TiO 2 , CaCO 3 and SiO 2 via a solid-phase method, and used as an opacifier for sanitary ceramics. The raw materials were calcined at 1200 °C for 2 h, yielding SSP with a main component of sphene and a trace of cristobalite, but no free TiO 2. In the optimal conditions of 12% added SSP, calcination temperature of 1100 °C, and holding time of 4 h, the ceramic glaze exhibited high whiteness. The SSP opacifier effectively inhibited the glaze yellowing that occurs when directly adding TiO 2 as an opacifier as there was no free TiO 2 transformed to rutile at high-temperature calcination. This study provides a feasible solution for the problem of glaze yellowing in substitution of TiO 2 for ZrSiO 4 opacifiers in sanitary ceramics, improving the quality of ceramic glazes. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPHENE
*GLAZING (Ceramics)
*CERAMICS
*GLAZES
*TITANIUM dioxide
*RAW materials
Subjects
Details
- Language :
- English
- ISSN :
- 03010104
- Volume :
- 575
- Database :
- Academic Search Index
- Journal :
- Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 172774629
- Full Text :
- https://doi.org/10.1016/j.chemphys.2023.112076