硫酸焙烧铝系钒铁炉渣共提钒和铝的试验研究  

Co-extraction of Vanadium and Aluminum from Ferrovanadium Slag by Sulfuric Acid Roasting

作　　者：邓孝伯 Deng Xiaobo(Pangang Group Vanadium and Titanium Resources Co.,Ltd.,Panzhihua 617023,Sichuan,China)

机构地区：[1]攀钢集团钒钛资源股份有限公司,四川攀枝花617023

出　　处：《钢铁钒钛》2020年第3期36-40,共5页Iron Steel Vanadium Titanium

摘　　要：电铝热法冶炼钒铁的炉渣中含有高品位的铝和高价值的钒。针对钒铁炉渣的特点,采用硫酸焙烧法处理钒铁炉渣,考察了酸料比、焙烧温度和焙烧时间对钒、铝提取效果的影响,探讨了硫酸焙烧机理。研究结果表明:在酸料比1.4 mL/g、焙烧温度240℃和焙烧时间90 min条件下,钒铁炉渣中钒、铝提取率分别达到72.5%、68.3%。该工艺具有焙烧温度低、提取率高的特点,为钒铁炉渣资源化利用提供了新的途径。Ferrovanadium slag generated from ferrovanadium production via electro-aluminothermic method contains high content of aluminum as well as vanadium with high utilization value.Based on the characters of the ferrovanadium slag,sulfuric acid roasting process was selected to extract vanadium and aluminum from the ferrovanadium slag.The effects of sulfuric acid to slag ratio,roasting temperature and time on extraction rates of vanadium and aluminum were investigated.Meanwhile,the sulfuric acid roasting mechanisms were also discussed.The results show that 72.5% of V and 68.3% of Al can be extracted from the slag at sulfuric acid to slag ratio of 1.4 mL/g,roasting temperature of 240 ℃ and roasting time of 90 min.With the advantages of high extraction efficiency and low roasting temperature,the proposed process provides a new utilization method for the ferrovanadium slag.

关 键 词：提钒 提铝 钒铁炉渣 硫酸焙烧法 提取率 

分 类 号：TF841.3[冶金工程—有色金属冶金]