Cr2O3含量对玻璃熔体黏度和熔化特性的影响

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (7): 2518-2523.

Cr₂O₃含量对玻璃熔体黏度和熔化特性的影响

王艺慈, 王一帆, 王瑞鑫, 赵凤光, 柴轶凡, 罗果萍

内蒙古科技大学材料与冶金学院,包头 014010

收稿日期:2022-02-27 修回日期:2022-04-06 出版日期:2022-07-15 发布日期:2022-08-01
通讯作者: 王一帆,硕士研究生。E-mail:wangyffcg@163.com
作者简介:王艺慈(1975—),女,博士,教授。主要从事炼铁原料及工艺、冶金资源综合利用等方面的研究。E-mail:wangyici01060@163.com
基金资助:
内蒙古科技成果转化专项(2019CG073);“固废资源化”国家重点研发计划(2020YFC1909105);白云鄂博稀土矿产资源基地固废循环利用集成示范(2021ZD0016)

Effect of Cr₂O₃ Content on Viscosity and Melting Characteristics of Glass Melt

WANG Yici, WANG Yifan, WANG Ruixin, ZHAO Fengguang, CHAI Yifan, LUO Guoping

College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China

Received:2022-02-27 Revised:2022-04-06 Online:2022-07-15 Published:2022-08-01

摘要/Abstract

摘要： 为了保证玻璃液顺利浇注成型,并为高炉渣和铬铁合金渣协同制备CaO-MgO-Al₂O₃-SiO₂-Cr₂O₃体系建筑微晶玻璃提供基础的工艺技术参数,采用FactSage7.1热力学软件绘制CaO-MgO-Al₂O₃-SiO₂-Cr₂O₃玻璃体系的五元相图,并通过试验探究基础玻璃熔体的黏度和熔化特性。结果表明,在FactSage7.1绘制的相图中,随着Cr₂O₃含量的增加,相图的液相区范围不断缩小,表明玻璃的进一步熔化受到阻碍。晶核剂 Cr₂O₃的质量分数由0.85%增加到2.05%的过程中,玻璃熔体黏度逐渐减小,熔化性温度逐渐升高,在采用熔融法制备CaO-MgO-Al₂O₃-SiO₂-Cr₂O₃体系基础玻璃时应使熔融温度高于1 469 ℃。Cr₂O₃含量增加会使基础玻璃熔化温度升高,具体表现为各组试样的软化温度、半球温度和流动温度均不断升高,因此应尽量降低基础玻璃原料配比中Cr₂O₃的含量。

关键词: 建筑微晶玻璃, Cr₂O₃, 黏度, 熔化特性, 高炉渣, 铬铁合金渣, FactSage热力学模拟

Abstract: In order to ensure the smooth pouring of liquid glass, and to provide basic technical parameters for the co-preparation of CaO-MgO-Al₂O₃-SiO₂-Cr₂O₃ architectural glass-ceramics by blast furnace slag and chromium iron alloy slag, FactSage7.1 thermodynamic software was used to draw the five-element phase diagram of CaO-MgO-Al₂O₃-SiO₂-Cr₂O₃ glass system, and the viscosity and melting characteristics of the base glass melt were investigated through experiments. The results show that in the phase diagram drawn by FactSage7.1, with the increase of Cr₂O₃ content, the liquid phase region of the phase diagram is shrinking, indicating that the further melting of glass is hindered. When the mass fraction of nucleating agent Cr₂O₃ increases from 0.85% to 2.05%, the viscosity of glass melt decreases gradually and the melting temperature increases gradually, and the melting temperature should be higher than 1 469 ℃ when the CaO-MgO-Al₂O₃-SiO₂-Cr₂O₃ base glass is prepared by melting method. The increase of Cr₂O₃ content will increase the melting temperature of the base glass, which is reflected in the continuous increase of softening temperature, hemisphere temperature and flow temperature of each group of samples. Therefore, the content of Cr₂O₃ in the raw material ratio of base glass should be reduced as much as possible.

Key words: glass ceramics for construction, Cr₂O₃, viscosity, melting characteristic, blast furnace slag, chromium iron alloy slag, FactSage thermodynamic simulation

中图分类号:

TQ171

王艺慈, 王一帆, 王瑞鑫, 赵凤光, 柴轶凡, 罗果萍. Cr₂O₃含量对玻璃熔体黏度和熔化特性的影响[J]. 硅酸盐通报, 2022, 41(7): 2518-2523.

WANG Yici, WANG Yifan, WANG Ruixin, ZHAO Fengguang, CHAI Yifan, LUO Guoping. Effect of Cr₂O₃ Content on Viscosity and Melting Characteristics of Glass Melt[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(7): 2518-2523.

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Cr₂O₃含量对玻璃熔体黏度和熔化特性的影响

Effect of Cr₂O₃ Content on Viscosity and Melting Characteristics of Glass Melt

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