Peng Hao, Wu Qian, Wang Lilian, Li Gang, Zhou Yuju, Cheng Qinzhe, Liu Zuohua, Tao Changyuan. Leaching of Vanadium and Chromium from High Chromium Vanadium Slag[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(2): 8-12. doi: 10.7513/j.issn.1004-7638.2019.02.002
Citation:
Peng Hao, Wu Qian, Wang Lilian, Li Gang, Zhou Yuju, Cheng Qinzhe, Liu Zuohua, Tao Changyuan. Leaching of Vanadium and Chromium from High Chromium Vanadium Slag[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(2): 8-12. doi: 10.7513/j.issn.1004-7638.2019.02.002
Peng Hao, Wu Qian, Wang Lilian, Li Gang, Zhou Yuju, Cheng Qinzhe, Liu Zuohua, Tao Changyuan. Leaching of Vanadium and Chromium from High Chromium Vanadium Slag[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(2): 8-12. doi: 10.7513/j.issn.1004-7638.2019.02.002
Citation:
Peng Hao, Wu Qian, Wang Lilian, Li Gang, Zhou Yuju, Cheng Qinzhe, Liu Zuohua, Tao Changyuan. Leaching of Vanadium and Chromium from High Chromium Vanadium Slag[J]. IRON STEEL VANADIUM TITANIUM, 2019, 40(2): 8-12. doi: 10.7513/j.issn.1004-7638.2019.02.002
Vanadium and chromium are hard to be leached out directly from the high chromium vanadium slag since they co-exist in spinel in the slag.CaF2 and MnO2 were applied to intensify the leaching process of vanadium and chromium from high chromium vanadium slag.The dosage of CaF2,the dosage of MnO2 and reaction time on the leaching efficiency of vanadium and chromium were investigated.The results indicate that the vanadium and chromium in low valence are hard to be leached out in acid condition,with the leaching efficiency of vanadium and chromium at 38.47% and 14.72%,respectively.The addition of CaF2 could destroy the Si-O structure and the vanadium and chromium in low valence can be released out,and then oxidized by MnO2.The leaching efficiency of vanadium and chromium increase with increase of the reaction time.The leaching efficiency of vanadium and chromium can be respectively increased to 62.08% and 29.56% with CaF2 and MnO2 intensifying the leaching process.
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