微波处理高砷铁矿石脱砷的试验研究

Experimental Study of Microwave Treating High Arsenic Ore

摘要: 利用微波加热的方法处理高砷铁矿石，在不同的配碳量下加热到850℃，950℃，1050℃，1150℃，保温10分钟，微波功率1 KW。试验结果表明：微波焙烧的脱砷效率比常规加热焙烧脱砷效率高，在配碳量为0%、4%、8%，马弗炉焙烧脱砷率为39.29%、69.51%、92.02%，而微波焙烧脱砷率为50.45%、88.66%、95.93%；脱砷率随着配碳量和焙烧温度的增加而增大，在配碳量为0%、4%、8%，平均脱砷率为44.87%、79.09%、92.97%，在850℃，950℃，1050℃，1150℃，平均脱砷率为63.75%、68.98%、77.97%、78.01%。

Abstract: The iron ore with high arsenic is heated to 850˚C, 950˚C, 1050˚C, 1150˚C in the different carbon content and kept thermal insulation for 10 min by microwave (1 kW) heating method. The result indicates that the dearsenification rate of microwave roasting is higher than the regular heating ways. The dearsenification roasting in Muffle furnace is 39.29%, 69.51%, 92.02% and that of mi-crowave roasting is 50.45%, 88.66%, 95.93% at respective carbon content of 0%, 4%, 8%. The dearsenification rises with the increase of the carbon content and the roasting temperature. The average dearsenification is 44.87%, 79.09%, 92.97% at respective carbon content of 0%, 4%, 8%; and at different temperature of 850˚C, 950˚C, 1050˚C, 1150˚C. The average dearsenification is 63.75%, 68.98%, 77.97%, 78.01%.