利用油页岩渣制备微晶玻璃的实验研究

Experiments and Study on Preparation of Glass Ceramics by Oil Shale Residue

利用油页岩渣探索制备微晶玻璃的配方,使油页岩资源得到综合利用。在分析油页岩渣成分的基础上,参照CaO-Al2O3-SiO2系统相图,确定微晶玻璃配方,并确定晶核剂的种类和用量。运用DTA,XRD,SEM等方法研究了微晶玻璃的晶化制度、析出晶相。微晶玻璃的最佳工艺制度:核化温度为850℃,保温2h,升温速率控制在4℃/min;晶化温度为975℃,保温2h,升温速率控制在6℃/min。微晶玻璃主晶相为钙铁透辉石Ca(Mg,Fe)Si2O6,次晶相为硅灰石,两者相互交织,微晶玻璃具有良好的理化性能。对微晶玻璃的主要性能做了测试,性能优于同类的大理石、花岗岩材料。

The formula of using oil shale residue to produce glass ceramics was researched. Thus, oil shale resource may be comprehensively utilized. Based on the analysis of oil shale residue composition, and consulted phase diagram of CaO-Al2O3-SiO2 system, the formula of the glass ceramics was confirmed. The types and dosage of nucleating agent were determined. By means of DTA, XRD and SEM, The crystallized mechanism and crystallization phase identification were studied. The optimal conditions of glass ceramics were determined ： the nucleation temperature was 850℃ and hold time 2h , and the calefactive rate controlled 4℃/rain; the crystallization temperature was 975℃ and hold time 2h , and the calefactive rate controlled 6℃/rain. The primary crystallization phase of glass ceramics was Ca（Mg, Fe）Si206, and secondary crystallization phase was wollastonite. Both crystallization phase complected one another, so the glass ceramics was provided with favorable physio-chemical capability. Major properties of the glass ceramics were tested, and capability preceded marble and granite material.