摘要
将农作物废弃物炭化产品与铁精矿粉制成含碳球团，进行直接还原试验研究。试验结果表明，含碳球团在1200-1300℃范围内，铁氧化物能在15-20 min内迅速被还原，高温保持时间以15-20 min为宜；随温度的升高球团的还原度逐渐增大，球团还原适宜温度为1200℃；球团的失重率和还原度随球团配炭比的增加呈上升趋势，较合理的球团碳氧比为0.9；生物炭较高的含碳量和适当的挥发分含量均有利于球团的还原；含碳球团在空气中能快速还原，但存在部分再氧化现象。
Researched the reduction examination of carbon-bearing pellets, which was prepared from carbonization products of agricultural and forest wastes and iron concentrate powder. The result showed that the carbon-bearing pellets could be reduced rapidly at 1 200~1 300℃in 15~20 min and the proper holding time at high temperature was 15~20 min;and the reduction of pellet increased with the rise of temperature and the better reduction temperature was 1 200℃;the weight loss rate and reduction degree of pellet increased with the rise of carbon proportion and the proper carbon oxygen ratio was 0.9;the higher carbon content and appropriate volatile content in biological carbon were benefit to the pellet reduction;carbon bearing pellets could be quickly reduced in the air, but there was some re-oxidization phenomenon.
出处
《湖南工业大学学报》
2014年第1期87-92,共6页
Journal of Hunan University of Technology
基金
湖南省科技计划基金资助项目(2012FJ3037)
关键词
农作物废弃物
含碳球团
失重率
还原度
agricultural waste
carbon-bearing pellet
weight loss rate
reduction
