氯化废弃物回收金属钛废料的基础研究  

Fundamental Study on Recycling Titanium Alloy Scrap by Chloride Wastes

作　　者：郑海燕[1] 卢金文[1] 田青[1] 沈峰满[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《过程工程学报》2010年第S1期53-57,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50804007);中国博士后科学基金(编号:20080431152);教育部留学回国人员科研启动基金

摘　　要：以Ti-6Al-4V钛合金和FeCl2·4H2O为出发原料模拟工业金属钛废料和工业氯化废弃物,在中高温条件下(配合真空),通过氯化法回收金属钛废料中的钛,获得金属钛的工业生产原料(TiClx).通过XRD、SEM/EDS和化学分析等检测手段对实验产物的物相、形貌和转化率等进行分析.结果表明,利用工业氯化废弃物回收废金属钛在技术上是可行的;当反应温度为1200K、反应时间为2h时,物料的转化率可达到80%以上.利用工业氯化废弃物回收废金属钛既减少资源的浪费又避免了氯化废弃物的污染、且有价金属回收完全,具有良好的工业应用前景.With a view to recycling metallic Ti-Al-V scraps by chloride wastes generated from the Kroll process or any other processes,some fundamental studies on the reactions between Ti alloy and iron chlorides(FeClx) were carried out.In a typical experiment,a metallic Ti-6Al-4V sample placed in a reactor filled with argon(Ar) gas was reacted with iron chloride(FeCl2·4H2O) at elevated temperatures(1100~1300 K),and the reaction products were analyzed with XRD,SEM/EDS,and chemical analysis method for examining the feasibility of recycling process.The results showed that Ti in Ti-6Al-4V alloy could be recovered in the form of TiClx by utilizing FeCl2·4H2O;the reaction products of TiClx and Fe could easily be recovered separately and the reaction rate of FeCl2 reached 80% at 1200 K for 2 h.The reaction rate of FeCl2 and the reaction speed were largely dependant on the reaction temperature over the range of 1100~1300 K.Therefore,the recycling process of titanium alloy scrap by chloride wastes had a potential prosperous because it not only minimized the resource waste and but also avoided the pollution from chloride wastes.

关 键 词：废金属钛合金 氯化废弃物 回收 

分 类 号：TF823[冶金工程—有色金属冶金]