铁酸钠对含铁矿物碳热还原过程铁粒形成的影响

发布时间：2018-05-10 23:12

本文选题：冶金废渣 + 碳酸钠　；参考：《中国有色金属学报》2016年05期

【摘要】：通过热力学计算、动力学试验以及还原产物微观形貌扫描电镜分析,研究Na_2O·Fe_2O_3在Fe_2O_3/MgFe_2O_4-Na_2CO_3-C还原体系中的作用。结果表明:在该体系中,Na_2CO_3与Fe_2O_3或MgFe_2O_4快速反应生成更易被碳还原的Na_2O·Fe_2O_3,从而降低还原反应的起始温度,并加速反应的进行;Na_2O·Fe_2O_3还能促进含铁矿物碳热还原过程中铁晶粒的长大,有利于后续铁矿物的磁选分离。
[Abstract]:The role of Na_2O Fe_2O_3 in Fe_2O_3/MgFe_2O_4-Na_2CO_3-C reduction system was studied by thermodynamics calculation, kinetic test and SEM analysis. The results show that in this system, Fe_2O_3 or MgFe_2O_4 can be reacted quickly to produce Na_2O Fe _ 2O _ 3, which is more easily reduced by carbon, thus reducing the initial temperature of the reduction reaction, and accelerating the reaction to accelerate the Na _ 2O Fe_2O_3 can also promote the growth of iron grains in the process of carbothermal reduction of iron bearing minerals. It is advantageous to the separation of iron ore by magnetic separation.
【作者单位】：中南大学冶金与环境学院;中南大学难冶有色金属资源高效利用国家工程实验室;
【基金】：国家自然科学基金资助项目(51374239) 中南大学“创新驱动计划”(2015CX001)~~
【分类号】：X756

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