从废催化剂中回收钒的新工艺研究

发布时间：2018-04-03 10:39

本文选题：催化剂　切入点：皂化　出处：《无机盐工业》2017年08期

【摘要】：介绍了皂化P_(204)萃取钒的反应机理,研究了皂化的P_(204)-仲辛醇-260号溶剂油萃取废钒催化剂浸取液中钒的规律性。结果表明:在萃原液pH=1.9、皂化率为75%的14%(体积分数,下同)P_(204)+7%仲辛醇+79%260号溶剂油为萃取液、相比为1∶2、水相电位为-190 m V的条件下,钒单级萃取率在96%以上,萃取相用硫酸反萃后可直接沉钒,避免了氧化工序放出氯气污染环境现象的发生,得到的V_2O_5质量达到GB/T 3283—1987《五氧化二钒》冶金99级标准。单级萃取钒、尾液集中再萃的工艺简单,生产成本低,前景广阔且值得推广。
[Abstract]:The mechanism of extraction of vanadium by saponification PSP 204) was introduced. The regularity of extraction of vanadium from the leachate of waste vanadium catalyst by saponification PSP 204- para-octanol-260 solvent oil was studied.The extraction phase can precipitate vanadium directly after stripping with sulfuric acid, thus avoiding the phenomenon of chlorine pollution in oxidation process. The quality of V_2O_5 obtained is up to GB/T 3283-1987 < vanadium pentoxide > metallurgical grade 99 standard.The process of single stage extraction of vanadium is simple, the production cost is low, the prospect is broad and worth popularizing.
【作者单位】：开封大学材料与化学工程学院;
【基金】：开封大学科研平台横向项目(007)
【分类号】：TQ135.11;X705

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