Antimony recovery from SbCl_5 acid solution by hydrolysis and aging

作     者：Ling Meng Shen-Gen Zhang De-An Pan Bin Li Jian-Jun Tian Alex.-A.Volinsky 

作者机构：Institute of Advanced Materials and Technology University of Science and Technology Beijing Department of Mechanical Engineering University of South Florida 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2015年第34卷第6期

页      面：436-439页

核心收录：

学科分类：080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.U1360202 and51472030) the National Key Project of the Scientific and Technical Support Program of China(Nos.2011BAE13B07,2012BAC02B01and 2011BAC10B02) the National Hi-Tech R&D Program of China(No.2012AA063202) the Fundamental Research Funds for the Central Universities(No.FRF-TP-14-043A1) the China Postdoctoral Science Foundation Funded Project(No.2014M560885) the Beijing Nova Program(No.Z141103001814006) 

主　　题：Antimony pentoxide Hydrolysis Aging Recovery Crystallinity 

摘      要：This study aimed to find an efficient way to recover Sb from the SbC15 acid solution obtained by the chloride leaching process of the tin-depleted residue. Sb was recovered in the form of hydrated antimony pentoxide through the hydrolysis process. The effects of hydrolysis ratio and aging time on the Sb recovery process were studied, and the corresponding trends were established. The experimental results show that the amount of the antimony free ions increases with the hydrolysis ratio and aging time. This decreases the concentration quotient of the hydrolysis reaction and thus facilitates the reaction. Product crystallinity is affected by the solution supersaturation, which varies at different stages with aging time. As a result, the optimal conditions of recovering Sb correspond to the hydrolysis ratio of 1.5 and aging time of 7 days with the recovery rate of 97 %.