Preparation and Investigation on the Microstructure and Properties of Stabilized magnesium Dolomite Zirconium Refractory Materials
[1]Meng Wei,Ma Chengliang,Ge Tiezhu,et al.Preparation and Investigation on the Microstructure and Properties of Stabilized magnesium Dolomite Zirconium Refractory Materials[J].Journal of Zhengzhou University (Engineering Science),2016,37(04):40-43.[doi:10.13705/j.issn.1671-6833.2016.04.009]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
37
Number of periods:
2016 04
Page number:
40-43
Column:
Public date:
2016-08-31
- Title:
- Preparation and Investigation on the Microstructure and Properties of Stabilized magnesium Dolomite Zirconium Refractory Materials
- Keywords:
- Stable zirconium magnesium dolomite; Zircon stone; Resistance to hydration; Phase composition; Microstructure
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2016.04.009
- Abstract:
- Using dolomite, magnesite, silica and zircon as raw materials, a stable zircon magnesite dolomite composite with CaO content of 35%, C/S ratio (CaO/SiO2 molecular ratio) of 2.5, and ZrO2 content of 2%, 4%, 6%, and 8% was prepared by two-step calcination and digestion process, The microstructure of the material was analyzed using SEM. The results showed that at 1000 ℃, zircon decomposed into CaZrO3, and calcium silicate began to form at 100 ℃. After 1300 ℃, CaO completely reacted; As the firing temperature increases, the density of the material increases, and the bulk density of the material increases to 3.113.16g/cm3 after firing at 1600 ℃; After firing at 650 ℃, the hydration weight gain of the material was 0.03% 0.07%, and f-CaO transformed into stable calcium silicate and CaZrO3 phases, significantly improving the material’s hydration resistance
- References:
- -
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