Separation and recovery of scandium and titanium from red mud leaching liquor through a neutralization precipitation-acid leaching approach
| Autor: | Qingyuan Lei, Wei Chen, Kanggen Zhou, Xuekai Zhang, Changhong Peng, Dewen He |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_element
02 engineering and technology General Chemistry Raffinate 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Neutralization Red mud Metal precipitation 0104 chemical sciences Metal chemistry Geochemistry and Petrology visual_art visual_art.visual_art_medium Scandium Leaching (metallurgy) 0210 nano-technology Titanium Nuclear chemistry |
| Zdroj: | Journal of Rare Earths. 39:1126-1132 |
| ISSN: | 1002-0721 |
| Popis: | Selective recovery of scandium and titanium from red mud leaching solution was achieved through neutralization precipitation followed by acid leaching approach. In the neutralization precipitation section, the effects of pH, temperature and reaction time on metal precipitation efficiency were investigated. Under the optimal condition, the precipitation efficiencies of scandium and titanium were 93.74% and 99.47%, respectively. In the acid leaching section, the effects of acidity, temperature, reaction time, and raffinate to acid solution ratio on leaching efficiency were investigated. Under the optimal condition, the leaching efficiencies of scandium and titanium were 99.97% and 5.44%, respectively. The loss of scandium and titanium were 6.3% and 5.9%, respectively. Compared with the traditional extraction procedure of scandium in red mud, this method could separate titanium from scandium effectively, which is beneficial for the purification of the products and improvement of value of the metal. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect