钢铁钒钛2025，Vol.46Issue(4)：27-34,8.DOI:10.7513/j.issn.1004-7638.2025.04.004
Na2CO3强化钛精矿真空碳热还原富集Ti
Na2CO3-enhanced vacuum carbothermal reduction for titanium enrichment from ilmenite concentrate
摘要
Abstract
Vanadium-titanium magnetite ore can yield a titanium concentrate with a TiO2 grade of 45％-50％through secondary beneficiation,where Ti predominantly exists in complex oxide phases as-sociated with Fe,containing elevated levels of impurities such as Ca,Mg,and Al.To resolve the preval-ent issues of low enrichment efficiency,excessive generation of polluting waste,and high energy con-sumption in conventional electric furnace smelting methods,this study integrates theoretical calcula-tions with vacuum carbothermal reduction experiments to investigate the influence of Na2CO3 as an ad-ditive on the reduction behavior of titanium concentrate and titanium enrichment.Results demonstrate that under optimized conditions-reduction temperature of 1450℃,carbon dosage of 12％,and 10％Na2CO3 addition,the system significantly enhances the aggregation efficiency of impurities(Si,Mg,Al,Ca),promotes the reduction of FeTiO3,and facilitates the coarsening of metallic Fe particles.This meth-odology establishes an innovative technical approach for subsequent magnetic separation of Fe and hy-drochloric acid leaching-based Ti enrichment processes.关键词
钛精矿/真空碳热还原/热力学/Na2CO3Key words
titanium concentrate/vacuum carbothermal reduction/thermodynamics/Na2CO3分类
矿业与冶金引用本文复制引用
ZHANG Shudong,SONG Bing,JIANG Yang,LI Bo,LONG Xianze,HUANG Run..Na2CO3强化钛精矿真空碳热还原富集Ti[J].钢铁钒钛,2025,46(4):27-34,8.基金项目
贵州省基础研究计划(自然科学)重点项目(黔科合基础-ZD[2025]091) （自然科学）
贵州省科技成果转化项目(黔科合成果[2024]一般149). （黔科合成果[2024]一般149）
