Journal
JOURNAL OF CENTRAL SOUTH UNIVERSITY
Volume 24, Issue 2, Pages 311-317Publisher
JOURNAL OF CENTRAL SOUTH UNIV
DOI: 10.1007/s11771-017-3432-x
Keywords
vanadium-bearing titanomagnetite; vanadium extraction; selective chlorination; thermodynamic analysis; chloride wastes
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Funding
- National Natural Science Foundation of China [51374061, 51074040]
- Natural Science Foundation of Liaoning Province, China [201202064]
- Fundamental Research Funds for the Central Universities, China [N120402004]
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Vanadium extraction of vanadium-bearing titanomagnetite was investigated by selective chlorination. Thermodynamics analyses on the interactive reactions among related species in the system were made before the experiments. Some fundamental experiments for extracting vanadium by FeClx as chlorinating agent were conducted over the temperature range of 900-1300 K under air or oxygen atmosphere. The results show that vanadium can be extracted by the selective chlorination, using FeClx, based on thermodynamic analysis and experiment. Vanadium extraction ratio first increases with the increase of temperature, and then decreases with the increase of temperature over the range of 900-1300 K under air or oxygen atmosphere. The higher molar ratio of FeCl3 to oxides (n(chl):n(oxd)) reacting with FeCl3, the higher ratio of vanadium extraction. Under oxygen atmosphere, the vanadium extraction ratio is up to 32% at 1100 K for 2 h by using FeCl3 as chlorinating agent.
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