含碳球团还原熔分的影响因素研究
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摘要
通过高温电阻炉对含碳球团还原熔分的行为进行热态模拟研究,考察了焙烧温度、焙烧时间、配碳量和碱度对含碳球团还原熔分的影响。结果表明:渣铁分离的最低熔分温度为1 360℃;最短焙烧时间为18.0 min;最佳配碳量(按照C/O计算)为1.2;炉渣二元碱度应控制在0.8～1.0。
The reduction and melting behavior of carbon-containing pellets was simulated by a high temperature resistance furnace. The effects of reduction temperature,reduction time,carbon/oxygen mole ratio and basicity of slag on the reduction and melting behavior of carbon-containing pellets were investigated. The results show that the lowest melting temperature for slag-iron separation is 1 360 ℃;The shortest reduction time is 18.0 min;The optimal carbon allocation(calculated by C/O)is 1.2;The binary basicity of slag should be controlled at 0.8-1.0.
The reduction and melting behavior of carbon-containing pellets was simulated by a high temperature resistance furnace. The effects of reduction temperature,reduction time,carbon/oxygen mole ratio and basicity of slag on the reduction and melting behavior of carbon-containing pellets were investigated. The results show that the lowest melting temperature for slag-iron separation is 1 360 ℃;The shortest reduction time is 18.0 min;The optimal carbon allocation(calculated by C/O)is 1.2;The binary basicity of slag should be controlled at 0.8-1.0.
引文
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[2] Birol B,Saridede M N. The Effect of reduction parameters on iron nugget production from composite pellets[J]. Mineral Processing and Extractive Metallurgy Review,2013,34(4):195.
[3]李俊翰,邱克辉,杨绍利.钒钛铁精矿含碳球团直接还原实验[J].有色金属:冶炼部分,2014(3):5.
[4]宁晓宇,薛庆国,王广,等.含碳球团直接还原熔分机理[J].北京科技大学学报,2014,36(9):1166.
[5]胡俊鸽,周文涛,郭艳玲,等.日本含碳球团技术研究进展[J].烧结球团,2014,39(2):27.
[6]张颖异,赵杰,齐渊洪,等.渣系碱度对含碳球团渣相组成和渣铁分离的影响[J].钢铁研究学报,2015,27(7):15.
[7]李林,郭汉杰,孟祥龙,等.钛磁铁矿球团预还原与熔分关系实验研究[J].矿冶工程,2015,35(3):106.
[8]刘功国,秦洁,何绍刚.钒钛磁铁矿金属化球团生产工艺参数实验研究[J].矿冶,2015,24(5):41.
[9]潘刚,王子杰,李义科,等.白云鄂博矿含碳球团直接还原过程工艺参数优化的数值模拟[J].科学技术与工程,2016,16(22):41.
[10]李荣,郭江.含碳球团还原熔分实验研究[J].钢铁钒钛,2015,36(4):84.