高炉渣和低碳铬铁合金渣协同制备微晶玻璃
Cooperative Preparation of Glass-ceramics by Blast Furnace Slag and Low-carbon Chromium Iron Alloy Slag
王一帆 1王艺慈 1王瑞鑫 1赵凤光 1柴轶凡 1罗果萍1
作者信息
- 1. 内蒙古科技大学材料与冶金学院,内蒙古 包头 014010
- 折叠
摘要
这是一篇矿物材料领域的论文.为对大宗工业固废进行高值化利用和无害化处理,以包钢高炉渣、低碳铬铁合金渣和石英砂为原料熔融法制备CaO-MgO-Al2O3-SiO2-Cr2O3 体系微晶玻璃.并通过差热分析(DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)等分析手段探究较优原料配比.结果表明:当高炉渣、低碳铬铁合金渣、石英砂质量比例为 60∶40∶31时,制得微晶玻璃的晶相为透辉石和绿辉石,此时微晶玻璃性能较优,抗折强度达到 126.25 Mpa,晶化度达到 89.19％,显微结构较理想.较优原料配比条件下制备的微晶玻璃满足国家A类装饰装修材料Ira≤1.0和Iγ≤1.3的要求,且微晶玻璃中重金属铬的浸出浓度符合国家标准,表明采用高炉渣和低碳铬铁合金渣制备微晶玻璃具有可行性.
Abstract
This is an article in the field of mineral materials.In order to make high-value utilization and harmless treatment of bulk industrial solid waste,CaO-MgO-Al2O3-SiO2-Cr2O3 system glass-ceramics were prepared by melting method with Baotou Steel blast furnace slag,low-carbon chromium iron alloy slag and quartz sand as the raw materials.The optimum ratio of raw materials was explored by means of differential thermal analysis(DSC),X-ray diffraction(XRD)and scanning electron microscopy(SEM).The results showed that when the mass ratio of blast furnace slag,low-carbon chromium iron alloy slag and quartz sand was 60∶40∶31,the crystalline phases of glass-ceramics were diopside and omphacite.At this time,the performance of glass-ceramics was the best,the flexural strength reached 126.25 Mpa,the crystallinity reached 89.19％,and the microstructure was ideal.The glass-ceramics prepared under the optimal raw material ratio met the requirements for national class A decoration materials,i.e.Ira≤1.0 and Iγ≤1.3,and the leaching concentration of heavy metal chromium in the glass-ceramics met the national standard,indicating that it is feasible to prepare glass-ceramics with blast furnace slag and low-carbon chromium iron alloy slag.
关键词
矿物材料/高炉渣/低碳铬铁合金渣/微晶玻璃/较优配比Key words
Mineral materials/Blast furnace slag/Low-carbon chromium iron alloy slag/Glass-ceramics/Optimal ratio引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据