| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Purification of Rutile Ore by HCl and HF Leaching |
| Author(s) |
Tong Zhang, Zhiwei Peng, Shangyong Zuo |
| On-Site Speaker (Planned) |
Tong Zhang |
| Abstract Scope |
Abstract：In this study, the removal of impurities in the natural rutile ore by leaching using HCl with concentrations from 2 to 12 mol/L and HF with concentrations from 2 to 12 wt.% was investigated based on the thermodynamic analysis of the main involved reactions and experimental characterizations using chemical titration, X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was shown that compared with traditional HCl leaching, HF leaching could extract more impurities because of easier reactions between HF and Al2O3, Fe2O3, Fe3O4, SiO2, or ZrO2, in spite of minor loss of TiO2 caused by its reaction with the acid. The purification performance of both acids increased initially and then decreased with increasing acid concentration. When the ore was leached using HCl with concentration of 6 mol/L at 60 ºC for 4 h, the TiO2 content was enhanced from 95.39 wt.% to 97.31 wt. % with the highest impurity removal percentage of 41.65 %. For HF leaching, the proper acid concentration was 6 wt.%. Under the same conditions as those in HCl leaching, the TiO2 content in the ore could be elevated to 98.87 wt.% with the impurity removal percentage of 75.49%. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Pyrometallurgy, Extraction and Processing |