Ammonium Metavanadate Fabricated by Selective Precipitation of Impurity Chemicals on Inorganic Flocculants  

作　　者：Bo Shi Dandan Zhu Pengxiang Lei Ximin Li Hengbo Xiao Lihua Qian 

机构地区：[1]Shandong Aluminum Industry Corporation Limited,Zibo,China [2]Petroleam&Natural Gas Transport Corporation of China,Wuhan,China [3]School of Chemistry and Chemical Engineering,Hubei University of Technology,Wuhan,China [4]School of Physics,Huazhong University of Science and Technology,Wuhan,China

出　　处：《Journal of Renewable Materials》2023年第4期1951-1961,共11页可再生材料杂志（英文）

基　　金：support from the Natural Science Foundation of Hubei Province(2020BED011);XPS characterizations and ICP-OES were carried out in the Analytical and Testing Center in HUST.

摘　　要：High purity ammonium metavanadate(NH_(4)VO_(3))is the most vital chemical to produce V2O5,VO2,VN alloy,VFe alloy and VOSO4,which have some prospective applications for high strength steel,smart window,infrared detector and imaging,large scale energy storage system.NH_(4)VO_(3)is usually produced by spontaneous crystallization from the aqueous solution due to its sharp dependence of solubility on the temperature.However,hazardous chemicals in industrial effluent,include phosphorate,silicate and arsenate,causing severe damage to the environment.In this work,these impurities are selectively precipitated onto inorganic flocculants,while the vanadate dissolved in an aqueous solution keeps almost undisturbed.Therefore,high purity NH_(4)VO_(3)is produced by the crystallization from the purified solution.By screening various flocculants and precipitating parameters,polyaluminum sulfate with an optimal amount of 50 g/L,is demonstrated to selectively remove phosphorate,silicate and arsenate,corresponding to the removing efficiency of 93.39%,97.11%and 88.31%,respectively.NH_(4)VO_(3)from the purified solution holds a purity of 99.21%,in comparison with 98.33%in the product from the crude solution.This purifying technology cannot only produce NH_(4)VO_(3)with high added value,but also reduce the environmental pollution of waste liquid.

关 键 词：Ammonium metavanadate flocculating agent phosphate ARSENATE cooling precipitation vanadium slag bayer alumina liquor 

分 类 号：TB383[一般工业技术—材料科学与工程]