低铁赤泥混熔体系中镁铁尖晶石生长的研究

doi:10.12068/j.issn.1005-3026.2023.06.012

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (6): 849-856.DOI: 10.12068/j.issn.1005-3026.2023.06.012

低铁赤泥混熔体系中镁铁尖晶石生长的研究

黄菲，王鑫宇，闻昕宇，常卓雅

(东北大学资源与土木工程学院，辽宁沈阳110819)

发布日期:2023-06-20
通讯作者: 黄菲
作者简介:黄菲(1959-)，女，江苏扬州人，东北大学教授，博士生导师.
基金资助:
国家重点研发计划项目(2018YFC1901903); 沈阳市科技计划项目(20203512).

Research on Magnesioferrite Growth in the Mixed Melting System of Low-Iron Red Mud

HUANG Fei， WANG Xin-yu， WEN Xin-yu， CHANG Zhuo-ya

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Published:2023-06-20
Contact: HUANG Fei
About author:-
Supported by:
-

摘要/Abstract

摘要： 利用低铁赤泥构建SiO₂-Al₂O₃-CaO-MgO-Fe₂O₃多元混熔体系，采用高温物相重构法制备镁铁尖晶石型结晶釉.用X射线衍射、场发射扫描电镜等技术手段，观测不同的温度条件下镁铁尖晶石结晶生长行为.结果表明:烧成温度升高促进了镁铁尖晶石晶体生长，晶体呈自形-半自形的粒状结构.烧成温度为1270℃时，样品分别在酸、碱溶液中侵蚀96h后，质量损失率小于0.1%，表现出最佳的耐酸碱性.制备的结晶釉磨损率为1.4×10^-5 mm³/(N·m)，维氏硬度为8.68GPa，满足日用陶瓷釉的性能要求.

关键词: 低铁赤泥；物相重构；镁铁尖晶石；晶体生长

Abstract: The SiO₂-Al₂O₃-CaO-MgO-Fe₂O₃ multi-mixed melting system was constructed using low-iron red mud， and the magnesioferrite crystalline glaze was prepared by a high-temperature phase reconstruction method. The crystal growth behavior of magnesioferrite at different temperatures was observed through X-ray diffraction and field emission scanning electron microscope. The results show that the increase of sintering temperature is helpful to the growth of magnesioferrite crystal， which has an autogenous-semi-autogenous granular structure.The sample has the best resistance against acid and alkali after 96h with a mass-loss rate less than 0.1% under a sintering temperature of 1270℃. In addition， its wear rate is 1.4×10^-5mm³/(N·m)， and its Vickers hardness is 8.68GPa， which meets the performance requirements of daily ceramic glazes.

Key words: low-iron red mud; phase reconstruction; magnesioferrite; crystal growth

中图分类号:

TQ174.4

黄菲，王鑫宇，闻昕宇，常卓雅. 低铁赤泥混熔体系中镁铁尖晶石生长的研究[J]. 东北大学学报（自然科学版）, 2023, 44(6): 849-856.

HUANG Fei， WANG Xin-yu， WEN Xin-yu， CHANG Zhuo-ya. Research on Magnesioferrite Growth in the Mixed Melting System of Low-Iron Red Mud[J]. Journal of Northeastern University(Natural Science), 2023, 44(6): 849-856.

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低铁赤泥混熔体系中镁铁尖晶石生长的研究

Research on Magnesioferrite Growth in the Mixed Melting System of Low-Iron Red Mud

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