Effect of Phase Separation Structure on the Crystallization Property of Blast Furnace Slag
Performance of slag glass ceramic largely depends on the phase separation structure formed in heat treatment.In the paper,the crystallization properties and its relation with phase separation structure of blast furnace slag (BFS) are researched.Three water-quenched samples and an air-quenched sample were respectively prepared.After conducting temper experiments and analyzing XRD and DTA results,the following conclusions have been acquired.Two crystallization regions exist in BFS system.In parent glass with phase separation structure,Ca3Mg(SiO4)2 and Ca2MgSi2O7 would form at lower temperature but Ca2Al2Si2O7 would appear at higher temperature than that in parent glass with homogenous structure.The former contributes to the existence of lower polymerized SiO4 units and more Ca2+ or Mg2+ in Ca-rich phase of phase separation glass,while the later is due to the diffusing hindrance of AlO4 in diffusing path and interface resistance in phase separation structure.
Blast Furnace Slag Phase Separation Crystallization Region
Li YU Zong Yanbing Cang Daqiang
Key Lab of Ecology and Recycling Metallurgy of Chinese Ministry of Education, School of Metallurgica Key Lab of Ecology and Recycling Metallurgy of Chinese Ministry of Education, School of Metallurgica
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
787-790
2009-08-16(万方平台首次上网日期,不代表论文的发表时间)