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Separation of Ilmenite from Vanadium Titanomagnetite by Combining Magnetic Separation and Flotation Processes
oleh: Fuxing Zhu, Zhanshan Ma, Kehui Qiu, Weixing Peng
Format: | Article |
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Diterbitkan: | MDPI AG 2023-01-01 |
Deskripsi
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 TiO<sub>2</sub> 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 TiO<sub>2</sub> 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 Ti<sup>4+</sup>, Fe<sup>3+</sup>, and Fe<sup>2+</sup> ions in the ilmenite concentrate compared with the MOH collector, thereby increasing the TiO<sub>2</sub> grade and recovery by 3.31% and 1.20%, respectively. This is beneficial for improving the comprehensive utilization of titanium resources in VTM ores.