粗TiCl4铜丝塔除钒废水的净化新工艺  

New purification technique of wastewater in removing vanadium from raw TiCl_4 with copper wire

作　　者：张力萍[1] 王学文[1] 袁继维[2] 龚仕成[2] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]遵义钛业股份有限公司,遵义563004

出　　处：《中国有色金属学报》2008年第6期1159-1163,共5页The Chinese Journal of Nonferrous Metals

基　　金：国家高新技术研究发展计划资助项目(2006AA03Z560);湖南省杰出青年科学基金资助项目(06JJ1007)

摘　　要：采用铜钒化合物共沉淀技术处理铜丝塔除钒废水，回收其中的铜和钒，并考察废水中Cu和V沉淀效果的各种影响因素。结果表明：常温搅拌加NaOH将铜丝塔除钒废水的pH值调至3．0-4．0后，加入H202可将其中的V^4＋氧化成V^5＋，再补加Cu^2＋使Cu与V的摩尔比增大到7．5-8．5，然后再加碱中和pH值至7．5-8．5，继续搅拌20min后过滤；滤液中Cu和v的浓度均小于2．0mg／L，达到国家污水综合排放标准；滤渣中含Cu45％-60％、V11％～15％，具有很高的综合回收价值。A coprecipitation process was used to purify the washing water and recover copper and vanadium. The factors affecting the purification were investigated. The results show that when the washing water is treated by adding sodium hydroxide to precondition the pH value to 3.0-4.0 under stirring, vanadium is oxidized from V^4＋ to V^5＋ with H2O2. The molar ratio of Cu to V is increased to 7.5-8.5 by adding Cu2＋. The solution is neutralized to pH value of 7.5-8.5 with NaOH, then the solution is filtered after agitating for 20 min at room temperature. The filtrate is very clear with concentrations of V and Cu less than 2.0 mg/L, which meet with the National Standards of Integrated Discharged Wastewater. The contents of copper and vanadium in the filter residues are 45% -60% Cu and 11%-15% V, which is a good crude material for recovery of vanadium and copper.

关 键 词：TICL4 铜丝 废水净化 综合回收 

分 类 号：TQ134.1[化学工程—无机化工] TF841[冶金工程—有色金属冶金]