Abstract: Mo and Re are extracted from the concentrate after acid precipitation in POX technology by using TBP as extractant.Effects of pH,the ratio of organic phase to aqueous phase (O/A),time and temperature on the extraction rates of Mo and Re are investigated.The results show that the extraction rate of Mo can reach 99.5% and the separation factor of Mo to Re is about 181 at 25℃,pH=2 and O/A=1:2.After extraction of Mo is completed,pH of the raffinate is adjusted to -0.5,the extraction rate of Re can reach 99.6% and the separation factor of Re to Mo is about 500 at 25℃ and O/A=1:1.
勾明雷, 牛青山. 用TBP从POX工艺酸沉浓缩液中萃取分离Mo、Re的研究[J]. 现代化工, 2019, 39(3): 152-155.
GOU Ming-lei, NIU Qing-shan. Extraction of Mo and Re from POX concentrate after acid precipitation by TBP. Modern Chemical Industry, 2019, 39(3): 152-155.
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