含硅铬铁矿粉微波加热体还原显微矿相结构分析  

Microstructure study of voluminal reduction on chromite ore fines containing silicon heated by microwave

作　　者：吴奎霖[1,2,3] 朱红波[1,2,3] 彭金辉[1,2,3] 张利波[1,2,3] 代林晴[1,2,3] 

机构地区：[1]微波能工程应用及装备技术国家地方联合工程实验室,云南昆明650093 [2]非常规冶金省部共建教育部重点实验室,云南昆明650093 [3]冶金与能源工程学院昆明理工大学,云南昆明650093

出　　处：《电子显微学报》2014年第6期526-530,共5页Journal of Chinese Electron Microscopy Society

基　　金：云南科技创新人才计划资助项目(No.2013HA002)

摘　　要：本文研究了含硅铬铁矿粉在碱度1.60～1.80的条件下微波加热体还原物料的显微矿相结构。在温度1100℃、1200℃、1300℃（大气压且无保护气氛）时，含硅铬铁粉矿在微波冶炼条件下的显微矿相结构以热碎裂还原结构以及铬铁矿粉颗粒周围渣相结构为主，随着冶炼温度的提高热碎裂也逐渐加剧。被还原的铬铁矿颗粒表面由最初边缘到内部的细小热碎裂还原结构扩展到最后的完全崩裂结构，且CrFe金属相中铬、铁含量也随着冶炼温度的提高而增加。最终在1300℃时实现渣金相完全分离。The microstructure of voluminal reduction on chromite ore fines containing silicon （ basicity：1.60 ~1.80 ） heated by microwave was studied in the paper. At the temperature of 1 100 ℃, 1 200 ℃ and 1 300 ℃ （ at atmospheric pressure without protective gas） , the microstructure of voluminal reduction on chromite ore fines containing silicon heated by microwave consisted mainly of the thermic fractured reduction structure from the edge to inside at the first. The fines thermic fractured reduction structures were dominated by the increase of temperature. Finally, at the temperature of 1300 ℃, complete separation occured, and Fe,Cr content in metallic CrFe phase increased with temperature.

关 键 词：微波加热 含硅铬铁矿粉 显微矿相结构 

分 类 号：TF046[冶金工程—冶金物理化学]