Separation of Ilmenite from Vanadium Titanomagnetite by Combining Magnetic Separation and Flotation Processes

Author:

Zhu Fuxing12ORCID,Ma Zhanshan1,Qiu Kehui2,Peng Weixing1

Affiliation:

1. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, China

2. College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China

Abstract

Vanadium titanomagnetite (VTM) is an important mineral for developing titanium resources, but the comprehensive recovery of ilmenite separation is extremely poor, resulting in the low-efficiency utilization of titanium resources. Here, the separation of ilmenite from VTM ore is studied by combining magnetic separation and flotation technologies. In particular, the floatability of mixed MOH/PG-1 collectors is thoroughly investigated. The results show that a concentrate with a TiO2 grade of 9.90% can be separated via weak magnetic separation and coarse particle tailing dumping. The concentrate grade is then increased to 14.32% via strong magnetic separation and floating separation of sulfur minerals. Finally, a TiO2 grade of 46.34% is obtained through closed-circuit flotation using mixed MOH/PG-1 collectors. The mixed collectors are very efficient and can enhance the chemical adsorption of the Ti4+, Fe3+, and Fe2+ ions in the ilmenite concentrate compared with the MOH collector, thereby increasing the TiO2 grade and recovery by 3.31% and 1.20%, respectively. This is beneficial for improving the comprehensive utilization of titanium resources in VTM ores.

Funder

National Basic Research and Development Program of China

Publisher

MDPI AG

Subject

Filtration and Separation,Analytical Chemistry

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