无烟煤碳包覆磁铁矿粉还原行为研究  

Study on Reduction Behavior of Carbon Coated Magnetite Powder from Anthracite

作　　者：郝素菊 孙天昊 蒋武锋 张玉柱 兰吉然 Hao Suju;Sun Tianhao;Jiang Wufeng;Zhang Yuzhu;Lan Jiran(Dexing Copper Mine,Jiangxi Copper Corporation Limited,Dexing,Jiangxi,China)

机构地区：[1]华北理工大学冶金与能源学院,现代冶金技术教育部重点实验室,河北唐山063009

出　　处：《矿产综合利用》2020年第2期194-197,共4页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金(NO.51274084);河北省自然科学基金(E2018209323,E2017209231);华北理工大学项目GP201507

摘　　要：采用磁铁矿粉表面碳包覆的方法来抑制矿料粘结失流,试验使用无烟煤为碳源,分析了无烟煤包覆磁铁矿粉在不同温度下还原后的微观变化,并结合能谱与XRD对抑制效果进行分析。研究发现,碳和磁铁矿粉的还原反应过程是Fe3O4→FeO→Fe的转化过程,且同时发生。以无烟煤为碳源包覆的磁铁矿粉对矿粉粘结失流的抑制效果较差。Using anthracite as carbon source,the microcosmic changes of magnetite powder coated with anthracite after reduction at different temperatures were analyzed,and the inhibition effect was analyzed by energy spectrum and XRD.`It is found that the reduction reaction of carbon and magnetite powder is the transformation process of Fe3O4 FeO Fe,and occurs simultaneously.The magnetite powder coated with anthracite as carbon source has poor inhibition effect on bond loss of flow.

关 键 词：铁矿粉 无烟煤 铁晶须 

分 类 号：TD951[矿业工程—选矿]