Preprint Article Version 1 NOT YET PEER-REVIEWED

Recovery Anosovite from Slow Cooling Melted Titanium Slag by Flotation

Chao Lv 1,2 , Kun Yang 1,3 , Shaojun Bai 1,2,* , Shuming Wen 1,2,* , Qicheng Feng 1,2 , Ximei Luo 1,2 , Dandan Wu 1,2 , Youyu Li 1,2
  1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
  2. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
  3. Faculty of Metallurgical and Energy Engineering, Kunming University of Science Technology, Kunming 650093, China
Version 1 : Received: 8 October 2016 / Approved: 10 October 2016 / Online: 10 October 2016 (07:48:57 CEST)

How to cite: Lv, C.; Yang, K.; Bai, S.; Wen, S.; Feng, Q.; Luo, X.; Wu, D.; Li, Y. Recovery Anosovite from Slow Cooling Melted Titanium Slag by Flotation. Preprints 2016, 2016100026 (doi: 10.20944/preprints201610.0026.v1). Lv, C.; Yang, K.; Bai, S.; Wen, S.; Feng, Q.; Luo, X.; Wu, D.; Li, Y. Recovery Anosovite from Slow Cooling Melted Titanium Slag by Flotation. Preprints 2016, 2016100026 (doi: 10.20944/preprints201610.0026.v1).

Abstract

In this paper, a new process of recovering Ti from vanadic titanomagnetite by beneficiation and metallurgy was conducted. Vanadic titanomagnetite concentrate was treated by carbothermic reduction procedure aimed at producing metallized pellet. Melting can realize separating metallic iron from slag under appropriate level of condition. Ti was mainly existed as the form of anosovite phase (MgTi2O5), through slow cooling, particles of anosovite crystal grow and can be separated by flotation. With the adopting of various analytical techniques, such as chemical analysis, X-ray diffraction (XRD), scanning-electron microscope (SEM) and energy dispersive system (EDS) to determine reduction process, phase transformation, microstructure of slag. Results showed that the degree of metallization can reach up to 94% at conditions of reduction temperature 1250 °C, holding 30 min, then melting 60min to obtain metallic iron and titanium slag. After melting, slow cooling promote at appropriate cooling rate of 5 °C/min, anosovite crystal growth and becomes bigger. Through grinding and flotation separation, an anosovite concentrate containing 72.35% TiO2 with 86.32% was obtained.

Subject Areas

vanadic titanomagnetite; carbothermic reduction; melting; anosovite crystal; grain growth; flotation

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