钒渣钙化焙烧熟料的浸出过程  

Leaching Process of Roasting Clinker with Vanadium Slag

作　　者：罗富怀 付念新 张林[3] 刘武汉 涂赣峰 Fuhuai LUO;Nianxin FU;Lin ZHANG;Wuhan LIU;Ganfeng TU(School of Metallurgy, Northeastern University, Shenyang, Liaoning 110819, China;Key Laboratory of Ecological Utilization of Multimetallic Mineral, Ministry of Education, Northeastern University, Shenyang, Liaoning 110819, China;Xichang Iron ＆ Steel Co., Ltd., Pangang Group, Xichang, Sichuan 615012, China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]东北大学多金属共生矿生态化利用教育部重点实验室,辽宁沈阳110819 [3]攀钢集团西昌钢钒有限公司,四川西昌615012

出　　处：《过程工程学报》2018年第3期600-604,共5页The Chinese Journal of Process Engineering

基　　金：国家重点基础研究发展计划(973)基金资助项目(编号:2007CB613503)

摘　　要：对钒渣钙化焙烧后的熟料用硫酸浸出,分析了不同条件下焙烧的熟料对钒浸出渣物相、钒浸出率的影响及钒损失的原因.结果表明,钒浸出渣的主要物相为不溶于酸的致密固溶体R2O3和铁板钛矿Fe2TiO5,其间混有硅酸盐辉石相和少量钒酸盐相.钒浸出率随焙烧温度、焙烧时间和钙钒质量比增加呈先增加后减小的趋势.硅酸盐种类及其对钒酸盐的影响、尖晶石氧化不完全、R2O3相中固溶V和钒青铜及正、焦、偏钒酸钙最佳浸出酸度不同是造成钒损失的原因.The process of acid leaching of calcification roasted vanadium slag was studied. The effects of process parameters variation on phase of the vanadium leaching residue, leaching rate of vanadium and the reason of vanadium loss were analyzed. The results showed that the main phase of vanadium leaching residue was insoluble in acid of dense solid solution R2O3 and Fe2TiO5, which was also mixed with silicate pyroxene phase and small amount of vanadate phase. The vanadium leaching rate first increased and then decreased with raising the roasting temperature, roasting time and the CaO/V2O5 mass ratio. Silicate species and its effect on vanadate, spinel oxidation incomplete, vanadium and vanadium bronze solid solution in of R2O3, and the difference of best leaching acidity of Ca3V2O8, Ca2V2O7 and CaV2O6 were the causes of vanadium loss.

关 键 词：钒渣 钙化焙烧 浸出率 钒酸钙 钒损失 

分 类 号：TF80[冶金工程—有色金属冶金]