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过程工程学报 ›› 2018, Vol. 18 ›› Issue (2): 375-381.DOI: 10.12034/j.issn.1009-606X.217284CSTR: 32067.14.jproeng.217284

• 过程与工艺 • 上一篇    下一篇

高磷铁矿含碳团块直接还原-磁选提铁

李东升1， 春铁军1*， 王 臻1， 宁 超1，穆固天1， 朱梦飞1，龙红明1,2   

  1. 1. 安徽工业大学冶金工程学院，安徽 马鞍山 243002；2. 安徽工业大学冶金减排与资源综合利用教育部重点实验室，安徽 马鞍山 243002
  • 收稿日期:2017-08-07 修回日期:2017-09-26 出版日期:2018-04-22 发布日期:2018-04-10
  • 通讯作者: 春铁军 springcsu@126.com
  • 基金资助:
    安徽省自然科学基金

Recovery of Iron from Carbon Bearing Briquettes of High-phosphorus Iron Ore by Direct Reduction and Magnetic Separation

Dongsheng LI1,  Tiejun CHUN1*,  Zhen WANG1,  Chao NING1,  Gutian MU1,  Mengfei ZHU1,  Hongming LONG1,2   

  1. 1. School of Metallurgical Engineering, Anhui University of Technology, Ma?anshan, Anhui 243002, China; 2. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Anhui University of Technology, Ma?anshan, Anhui 243002, China
  • Received:2017-08-07 Revised:2017-09-26 Online:2018-04-22 Published:2018-04-10
  • Contact: CHUN Tie-jun springcsu@126.com

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摘要： 采用直接还原?磁选工艺从湖南某地高磷铁矿含碳团块中提铁，研究了还原温度、还原时间、团块碱度、还原剂焦粉用量、添加剂Na2SO4用量和废塑料替代焦粉量等因素对磁选精矿指标的影响. 结果表明，在还原温度1150℃、还原时间40 min、团块碱度0.8、碳氧摩尔比0.9的条件下，添加4% Na2SO4同时添加废塑料替代25%焦粉，可得到金属化率为88.77%的焙烧矿，磁选后可得到铁品位91.99%、金属化率92.26%及P含量0.20%的金属铁粉，铁回收率达86.74%.

关键词: 高磷铁矿, 废塑料, 含碳团块, 直接还原, 磁选

Abstract: The reduction roasting?magnetic separation of iron from carbon bearing briquettes of high-phosphorus iron ores in Hunan was studied, and the effects of reducing temperature, reducing time, basicity, reducing agent, additive agent, and rate of waste plastics replace coke powders on the indexes of metallic iron powders were investigated. The results showed that under the experimental conditions of the basicity 0.8, the molar ratio of carbon/oxygen 0.9, the amount of sodium sulfate 4%, adding waste plastics to replace 25% coke powders, at 1150℃ for 40 min, the metallization rate of 88.77% of the roasted briquettes were obtained, and the final metallic iron powder assaying 91.99% TFe, metallization rate of 92.26% and P content of 0.20% of metal iron fines was obtained with the iron recovery rate of 86.74%.

Key words: high phosphorus iron ore, waste plastics, carbon bearing briquettes, direct reduction, magnetic separation