生物质热解特性及其还原铁精矿研究
CSTR:
作者:
作者单位:

作者简介:

黄柱成(1964—),男,教授,博士生导师,从事资源综合利用、铁矿烧结球团、直接还原与熔融还原等方面的研究。

通讯作者:

中图分类号:

TF111.13

基金项目:

国家自然科学基金资助项目(51504230)


Research on biomass pyrolysis characteristics and iron concentrate reduction
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    生物质低碳环保,用于铁矿石还原可以实现钢铁企业绿色发展,为探究一种快速高效的直接还原方法,本文对其热解特性和铁精矿的还原进行了研究。结果表明:生物质在较低温度下可快速热解,热解温度为693 ℃时,失重率达到66.76%,最大失重速率可达7.85 min;生物质热解生成的气相产物主要有CO、CO2、CH4、C2H4、H2等,且铁矿石的添加有利于碳氢化合物转化生成CO,足够量的固定碳存在是实现生物质铁精矿低温快速还原的保证。当碳铁摩尔比为0.4,还原温度为1 050 ℃时,还原产物的金属化率为82.97%,可实现铁精矿的低温快速还原。

    Abstract:

    Biomass is low carbon and environmentally friendly, which can be used for iron ore reduction to realize the green development for iron and steel enterprises. In order to explore a fast and efficient direct reduction method, the pyrolysis characteristics of biomass and the reduction of iron concentrate are studied. The results show that, the biomass can be rapidly pyrolyzed at low temperature. When the pyrolysis temperature is 693 ℃, the weight loss rate reaches 66.76%, and the maximum weight loss rate reaches 7.85% /min. The gaseous product generated by biomass pyrolysis mainly include CO, CO2, CH4, C2H4, H2, etc., the addition of iron ore is conducive to the transformation of hydrocarbons into CO, and the existence of sufficient fixed carbon is the guarantee to realize the rapid reduction of biomass iron concentrate at low temperature. When the molar ratio of carbon to iron is 0.4 and the reduction temperature is 1 050 ℃, the metallization rate of the reduction products is 82.97%, the rapid reduction of iron concentrate at low temperature can be realized.

    参考文献
    相似文献
    引证文献
引用本文

黄柱成,金芸芸,易凌云,王 林,胡建家.生物质热解特性及其还原铁精矿研究[J].烧结球团,2021,46(3):65-71

复制
分享
相关视频

文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:2021-03-15
  • 录用日期:
  • 在线发布日期: 2026-09-05
  • 出版日期:
文章二维码