...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Effective Use of CH4 Gas as a Reducing Agent in Suspension Reduction Process
【24h】

Effective Use of CH4 Gas as a Reducing Agent in Suspension Reduction Process

机译：CH 4 气体在还原过程中的有效利用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The current study investigated the reduction and carburization in the suspension reduction of the fine Chinese Benxi magnetite ore with CH_(4)-containing gas. A very high fractional reduction was achieved by CH_(4)-containing gas at 1300°C compared with that by H_(2) or CO gas. The reduction rate of the ore by CH_(4) was higher than that by H_(2) above 1150°C. The activation energies of the ore reduction by 11 vol%CH_(4) and 20 vol%H_(2) were calculated to be 113.6 and 76.9 kJ/mol, respectively. The reduction mechanism analysis showed that the formation of thin Fe layer reduced from wustite and the carbon dissolved into metallic shell by carburization had great influences on the further reduction progress. It is believed that the subsequent progress is related to the formation of less dense shell of metallic Fe with some cracks by the building up of gas pressure at Fe/wustite interface. Furthermore, the synergistic effect of H_(2) addition to CH_(4) gas on the reduction of the magnetite ore was also clarified.
机译：目前的研究研究了用含CH_（4）的气体悬浮还原本溪细磁铁矿的还原和渗碳作用。与H_（2）或CO气体相比，含CH_（4）的气体在1300°C的还原率非常高。在1150°C以上，CH_（4）对矿石的还原率高于H_（2）对矿石的还原率。矿石还原的活化能分别为11vol％CH_（4）和20vol％H_（2），分别为113.6和76.9 kJ / mol。还原机理分析表明，铁素体由铁素体还原形成的薄铁层以及渗碳使碳溶解进入金属壳的过程对进一步还原有很大影响。可以认为，随后的进展与通过在铁/镁铁矿界面处建立气压而形成的具有一些裂纹的金属铁的致密壳有关。此外，还阐明了向CH_（4）气体中添加H_（2）对还原磁铁矿的协同作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号