铝铬渣对锑冶炼炉用铝铬砖性能的影响
发布时间：2018-08-20 10:34
【摘要】：本课题通过静态坩埚法对比筛选出锑冶炼炉用较佳的耐火材料。进而研究添加不同比例的铝铬渣(主要成分是Al2O3-Cr2O3)在不同烧成温度下对铝铬砖性能的影响。通过检测试样的体积密度、显气孔率、常温耐压强度、烧后线变化率、荷重软化温度与热震稳定性,同时借助SEM及XRD等手段对比筛选出较佳的铝铬渣加入量和烧成温度,以此制取性价比较高的铝铬砖。实验结果表明:(1)铝铬砖在各类锑冶炼渣样的静态坩埚实验中的综合抗侵蚀渗透性较好,电熔半再结合镁铬砖次之,铬渣砖与特级高铝砖的综合性最差;(2)当铝铬渣加入量为30 wt.%时,铝铬砖中综合性能较佳;(3)加入30 wt.%铝铬渣的铝铬砖较佳的烧成温度是1600℃。本课题同时探讨了添加剂α-Al2O3微粉,Cr2O3微粉对含30%铬渣的铝铬砖性能的影响,2种添加剂对铝铬砖性能均有小幅提升作用,α-Al2O3微粉与Cr2O3微粉较佳的加入量均是3%wt.。
[Abstract]:Through static crucible method, the better refractory for antimony smelting furnace is selected. The effect of adding different proportion of Al-Cr slag (the main component is Al2O3-Cr2O3) on the properties of Al-Cr brick at different sintering temperature was studied. The volume density, apparent porosity, compressive strength at room temperature, linear change rate after firing, softening temperature and thermal shock stability of the samples were measured. At the same time, the better addition and sintering temperature of Al-Cr slag were obtained by means of SEM and XRD. In this way, a high cost-performance aluminum-chromium brick. The experimental results show that: (1) Aluminum-chromium brick has better comprehensive corrosion resistance and permeability in static crucible test of various kinds of antimony smelting slag, followed by fused semi-rebonded magnesia-chrome brick. (2) when the content of Al-Cr slag is 30wt.%, the comprehensive properties of Al-Cr brick is better, and (3) the better sintering temperature is 1600 鈩，
本文编号：2193289
[Abstract]:Through static crucible method, the better refractory for antimony smelting furnace is selected. The effect of adding different proportion of Al-Cr slag (the main component is Al2O3-Cr2O3) on the properties of Al-Cr brick at different sintering temperature was studied. The volume density, apparent porosity, compressive strength at room temperature, linear change rate after firing, softening temperature and thermal shock stability of the samples were measured. At the same time, the better addition and sintering temperature of Al-Cr slag were obtained by means of SEM and XRD. In this way, a high cost-performance aluminum-chromium brick. The experimental results show that: (1) Aluminum-chromium brick has better comprehensive corrosion resistance and permeability in static crucible test of various kinds of antimony smelting slag, followed by fused semi-rebonded magnesia-chrome brick. (2) when the content of Al-Cr slag is 30wt.%, the comprehensive properties of Al-Cr brick is better, and (3) the better sintering temperature is 1600 鈩，
本文编号：2193289
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