作者：ZHOU Junjie,HAN Junhua

作者单位：CISDI Engineering Co., Ltd.

刊名：China’s Refractories

ISSN：1004-4493

出版年：2022-09-15

卷：31

期：3

起页：24-27

止页：

分类号：TQ175.1

语种：英文

关键词：

内容简介

Al2O3-SiO2 based gunning mixes were prepared with electric porcelain waste, silica fume, bauxite, quartz powder, and calcium aluminate cement(CAC) of different additions as raw materials firing at different temperatures to research the effect of the CAC addition on their phase change and properties. The results show that: from theoretical analysis of the phase diagram,with the CAC addition increasing from 8% to 14%, anorthite increases from 40.0% to 77.7%, by mass. With the rising CAC addition, the permanent linear change on heating of specimens increases; for the specimens dried at 110 ℃ or hot-treated at 1 000 ℃, the bulk density and the mechanical properties increase, and the apparent porosity decreases; and for those hottreated at 1 300 ℃, the bulk density and the mechanical properties firstly increase, and then decrease, while the apparent porosity shows an opposite trend. Taking into account the phases at high temperatures and the properties, the optimal CAC addition of Al2O3-SiO2 based gunning mixes is 12%.