熔融Na_2CO_3体系中含钒钢渣焙烧过程研究  

Roasting Process for Vanadium-containing Steel Slag in Molten Na_2CO_3 System

作　　者：蔡永红 赵昌明[1] 宁哲[1] 王一雍[1] 张崇民 

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [2]攀钢集团成都钢钒有限公司,四川攀枝花617000

出　　处：《矿冶工程》2017年第6期76-79,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51674141;51174111);辽宁省教育厅项目(2016TSPY02);辽宁省化学冶金工程重点实验室开放课题基金(USTLKFSY201502);辽宁科技大学青年基金(2015QN01)

摘　　要：基于钠化焙烧含钒钢渣提钒工艺的相关理论,针对熔融Na_2CO_3体系中含钒钢渣焙烧过程进行了研究。通过单因素实验考察了焙烧温度、Na_2CO_3添加量、焙烧时间对含钒钢渣中钒浸出率的影响,在单因素实验基础上采用正交设计优化工艺条件,并对反应机理进行了解析。结果表明,熔融Na_2CO_3体系中含钒钢渣焙烧的优化实验条件为:焙烧温度900℃、Na_2CO_3添加量40%、焙烧时间60 min,此时钒浸出率稳定在90%以上。Based on the existing theory for extracting vanadium from vanadium-containing steel slag with sodium salt roasting,a roasting process for vanadium-containing steel slag in the molten Na2CO3 system was studied. Effects of roasting temperature,Na2CO3 addition and roasting time on the leaching rate of vanadium from vanadium containing steel slag were investigated by the single factor experiments. Then,the process conditions were optimized with orthogonal experimental design,and the reaction mechanism of roasting process was analyzed based on the experimental results. It is found that with the following optimum roasting conditions,including roasting temperature at 900 ℃,addition of Na2CO3 at an amount of 40%,roasting time of 60 min,the leaching rate of vanadium can be kept over 90%.

关 键 词：含钒钢渣 钒 熔融 钠化焙烧 NA2CO3 

分 类 号：TF046[冶金工程—冶金物理化学]