烟气制酸废催化剂直接湿法浸出钒、钾和锌的试验研究  

Direct leaching of spent catalyst from acid production from flue gas

作　　者：朱军[1,2] 刘丹阳 杨淼[1] 陈毅鹏 王斌 赵律[2] 康敏 Zhu Jun;Liu Danyang;Yang Miao;Chen Yipeng;Wang Bin;Zhao Lv;Kang Min(Xi'an University of Architecture and Technology,Xi'an 710055,Shanxi,China;Shanxi Hanzhong Zinc Industry,Xi'an 710055,Shanxi,China;Northwest Institute of Nonferrous Geology,Xi'an 710055,Shanxi,China)

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]陕西汉中锌业,陕西西安710055 [3]西北有色地质研究院,陕西西安710055

出　　处：《钢铁钒钛》2021年第2期10-14,共5页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金项目(H_(2)SO_(4)+HnAm新体系处理氰化尾渣降氰除铁技术及应用基础研究,51974221)。

摘　　要：重金属冶炼烟气制酸的废催化剂杂质组成相对复杂,为获得此类废催化剂综合回收钒、钾、锌工艺的优化条件,对直接湿法浸出工艺钒、钾、锌浸出率的影响因素进行了试验研究。通过单因素试验,系统研究了浸出剂质量分数、液固比、反应温度、反应时间对钒、钾、锌浸出率的影响,其次对废催化剂和浸出渣的化学成分及物相进行了分析对比。结果表明,浸出的最佳工艺条件为:硫酸质量分数8%、液固比2∶1、浸出温度70℃、浸出时间1.5 h,钒、钾、锌的浸出率分别达93.58%、85.43%、99.31%,优于传统焙烧法。The waste catalyst from acid production from heavy metal smelting flue gas has relatively complex impurity compositions.In order to obtain the optimum conditions for comprehensive recovery of vanadium,potassium and zinc from the waste catalyst,a direct leaching process was proposed and the factors affecting the leaching rate of vanadium,potassium and zinc,e.g.the mass fraction of leaching agent,liquid-solid ratio,reaction temperature and time,were studied.The chemical and phase compositions of the waste catalyst and leaching residue were analyzed and compared.The optimum leaching conditions were determined at the sulfuric acid mass fraction of 8%,liquid-solid ratio of 2∶1,leaching temperature of 70℃and leaching time of 1.5 h,with the leaching rates of vanadium,potassium and zinc at 93.58%,85.43%and 99.31%,respectively.The proposed process is better than the traditional roasting method.

关 键 词：废催化剂 冶炼烟气 制酸 酸浸 钒 钾 锌 浸出率 

分 类 号：TF841.3[冶金工程—有色金属冶金] TQ426[化学工程]