微波加热制备含稀土(La_(2)O_(3))矿渣微晶玻璃研究  

Preparation of La_(2)O_(3) Slag Glass-Ceramics by Microwave Heating

作　　者：赵广凯 徐文策 刘赛余 张宇轩 吴楠楠 刘芳[1] 欧阳顺利[1] ZHAO Guangkai;XU Wence;LIU Saiyu;ZHANG Yuxuan;WU Nannan;LIU Fang;OUYANG Shunli(Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources,Inner Mongolia University of Science and Technology,Baotou 014010,China;School of Science,Inner Mongolia University of Science and Technology,Baotou 014010,China;Materials and Metallurgy School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学,白云鄂博矿多金属资源综合利用重点实验室,包头014010 [2]内蒙古科技大学理学院,包头014010 [3]内蒙古科技大学材料与冶金学院,包头014010

出　　处：《人工晶体学报》2021年第5期920-926,共7页Journal of Synthetic Crystals

基　　金：国家自然科学基金(11964025,11564031);内蒙古自治区重大基础研究开放课题(0406091701);内蒙古科技大学创新基金项目-优秀青年科学基金(2019YQL06);内蒙古自治区自然科学基金(2018LH02004);内蒙古科技创新引导项目。

摘　　要：利用矿渣制备微晶玻璃是提高矿产资源利用率的主要形式之一。本文以白云鄂博尾矿为原料,采用微波一步法制备了CaO-MgO-Al_(2)O_(3)-SiO_(2)(CMAS)系辉石相矿渣微晶玻璃。选择835℃作为晶化温度,研究了微波加热对微晶玻璃析晶行为和微观组织的影响。以La_(2)O_(3)作为研究变量探讨了La_(2)O_(3)添加对矿渣微晶玻璃析晶行为的作用。与传统的热处理制度相比,微波加热可以在较短的时间内达到较高的析晶效果。同时La_(2)O_(3)的添加促进了晶粒细化。由拉曼光谱分析,La离子添加会导致玻璃网络中桥氧的增多,促进了辉石相析晶。在La的添加量为4%(质量分数)时硬度最高,达到了829.22 MPa。Using slag to prepare slag glass-ceramics is one of the main ways to improve the utilization rate of mineral resources.CaO-MgO-Al_(2)O_(3)-SiO_(2)(CMAS)series pyroxene phase slag glass-ceramics were prepared using Bayan Obo tailings as raw materials by microwave one-step method.835℃was choosed as the crystallization temperature and the influence of microwave heating on the crystallization behavior and microstructure of glass-ceramics were studied.Effect of La_(2)O_(3) addition on the crystallization behavior of slag glass-ceramics were discussed using La_(2)O_(3) as the research variable.Compared with traditional heat treatment system,the microwave heating achieves higher crystallization effect in a shorter time.Here,the addition of La_(2)O_(3) promotes grain refinement.According to the analysis of Raman spectroscopy,the addition of La ion will cause the increase of bridging oxygen in the glass network and increase the tightness and integrity of the crystal.The hardness is the highest when the addition of La is 4%(mass fraction),and the Vickers hardness reaches 829.22 MPa.

关 键 词：白云鄂博尾矿 微波法 矿渣微晶玻璃 氧化镧 拉曼光谱 

分 类 号：TQ171[化学工程—玻璃工业]