Effect of pretreatment on the extraction of valuable metal from vanadium-bearing titanomagnetite by ammonium sulfate roasting

被引：6
作者：
Bian, Zhenzhong [1 ]
Feng, Yali [1 ]
Li, Haoran [2 ]
Zhang, Qian [1 ]
Xu, Chenglong [1 ]
Li, Haosheng [1 ]
Li, Zhengyao [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
来源：
METALLURGICAL RESEARCH & TECHNOLOGY | 2021年 / 118卷 / 06期
关键词：
pretreatment; vanadium-bearing titanomagnetite; extraction; valuable metal; HYDROCHLORIC-ACID; CRYSTAL-STRUCTURE; TITANIUM; RECOVERY; SLAG; DECOMPOSITION; MECHANISM; SPECTRA; PHASE; IRON;
D O I：
10.1051/metal/2021054
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper presents the effect of pretreatment on the ammonium sulfate roasting behavior of vanadium-bearing titanomagnetite. The effects of the several parameters included pretreatment temperature, time and atmosphere upon the extraction efficiency of V, Ti and Fe were investigated. Under the conditions of a pretreatment temperature of 900 degrees C, a time of 2h and an air flow of 4 L/min, the extraction efficiency of V, Ti and Fe reached 92.56%, 11.25% and 78.72%, respectively. The study of the valence state changes of V and Fe before and after pretreatment found that pretreatment was beneficial to increase the content of acid soluble V(IV) and V(V), and enrich Ti species. XRD, SEM-EDS and FTIR were deeply clarified the influence of pretreatment on the evolution characteristics of the mineral phase. Additionally, the difficulty of pyrolysis between the intermediate Ti species and ammonium sulfate was analyzed by thermodynamic simulation.
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页数：11
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