攀钢高炉渣提钛过程中钒的走向及回收途径  

Study on the Track and Recycle of Vanadium in the Titanium Extraction from Blast Furnace Slag

作　　者：周艾然 陆平[1] 

机构地区：[1]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《钢铁钒钛》2015年第2期63-67,共5页Iron Steel Vanadium Titanium

摘　　要：通过理论计算和过程样品检测分析了攀钢高炉渣"高温碳化—低温氯化"提钛工艺中钒的反应机理和走向。结果表明:高炉渣在高温碳化过程中,其中的钒元素会以V2O3的形式进入碳化渣,而在低温氯化过程中,V2O3会与氯气发生反应生成VOCl3进入粗Ti Cl4中,而不是进入提钛尾渣或氯化收尘渣,最后经过精制工序,VOCl3将形成VOCl2固体进入精制残渣中。精制尾渣经煅烧、钠化焙烧、水浸提钒等工序,可制得符合GB3283—1987要求的五氧化二钒产品。经初步测算,每产出1万t粗Ti Cl4,可回收得到50 t左右的V2O5。The reaction mechanism and track of vanadium were analyzed by theoretical calculation and sample detection during titanium extraction from blast furnace slag in Pangang by processes of high temperature carburization and low temperature chlorination. The results show that vanadium enters into the carbonization slag in the form of V2O3 during high temperature carburization of the blast furnace slag, then V2P reacts with chlorine in the process of low temperature chlorination and the product VOCl enters into coarse TiCl4. VOCl3transforms into solid VOCland stays in the residue through refining process. V2O satisfying the GB3283-1987 standard can be prepared by undergoing processes of calcination of the residue, salt roasting, leaching, and etc. Preliminary measurement indicates that about 50 tons of V2O5 can be recycled in producing every 10 000 tons of coarse TiCl4.

关 键 词：高炉渣 高温碳化 低温选择性氯化 四氯化钛 精制 残渣提钒 

分 类 号：TF823[冶金工程—有色金属冶金]