农作物废弃物含碳球团还原行为研究
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Study on the Reduction Process of Carbon-Bearing Pellets from Agricultural Waste
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    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1 200~1 300 ℃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1 200 ℃;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。

    Abstract:

    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.

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刘竹林,王发龙,王建丽,高泽平,刘汉辉.农作物废弃物含碳球团还原行为研究[J].湖南工业大学学报,2014,28(1):87-92.

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  • 收稿日期:2013-11-20
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  • 在线发布日期: 2014-04-03
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