摘要
以转炉钒渣为原料进行钙化焙烧实验,考察钒渣粒径对钒渣钙化焙烧后钒浸出率的影响,并采用热重分析方法研究钒渣粒径对钒渣钙化焙烧非等温氧化过程的影响。结果表明:钒渣原料最佳粒径范围为48~75μm,相应的钒浸出率为84%,此时钒渣熟料中钒铁尖晶石相完全氧化分解;在非等温氧化过程中,随着钒渣粒径从120~250μm减小至48~75μm,钒渣钙化焙烧的氧化过程由扩散控制转化为化学反应控制。
Calcified roasting experiments were performed by taking converter vanadium slag as raw material.The effect of particle size of vanadium slag on the vanadium leaching rate from the calcified roasting slag was investigated,and the effect of particle size of vanadium slag on non-isothermal oxidation process of vanadium slag roasting was studied with thermogravimetric analysis method.The results show that the optimum particle size of vanadium slag material is 48-75μm with a vanadium leaching rate of 84%,at the same time,vanadium spinel phase has been completely oxidized and decomposed.In the non-isothermal oxidation process,when the particle size of vanadium slag decreases from 120-250μm to 48-75μm,the oxidation process of calcified roasting of vanadium slag changes from the diffusion control to the chemical reaction control.
作者
张菊花
严哲锋
冯嘉鑫
蔡一烽
张伟
薛正良
ZHANG Juhua;YAN Zhefeng;FENG Jiaxin;CAI Yifeng;ZHANG Wei;XUE Zhengliang(Key Laboratory for Ferrous Metallurgy and Resource Utilization of Ministry of Education,Wuhan 430081,China;The State Key Laboratory of Refractories and Metallurgy,Wuhan 430081,China;School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《安徽工业大学学报（自然科学版）》
CAS
2017年第4期316-321,326,共7页
Journal of Anhui University of Technology（Natural Science）
基金
钢铁冶金及资源利用省部共建教育部重点实验室开放基金(FMRU201501)
武汉科技大学青年科技骨干培养计划项目(2017xz003)
省部共建耐火材料与冶金国家重点实验室青年基金(2016QN05)
关键词
钙化焙烧提钒
粒径
钒浸出率
氧化动力学
vanadium extraction with calcified roasting
particle size
vanadium leaching rate
oxidation kinetics
