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考虑到钨、钼不同的地球化学富集行为,研究铁锰复合氧化物(FMBO)、氢氧化铁(Fe(OH)_3)和二氧化锰(MnO_2)三种吸附剂从钼酸盐溶液中分离钨。结果表明,铁锰复合氧化物(FMBO)最适合从钼酸盐溶液中除钨。铁锰复合氧化物在一个较宽泛的p H范围内(6.9~11.3)均有较好的适用性,可以得到钨去除率超过80%,钼损失小于3%。此外,铁锰复合氧化物可以用3 mol/L的氢氧化钠再生,而且钨的去除率经过5次吸附-解吸-再生仍然可以保持不变。表明铁锰复合氧化物吸附法从钼酸盐溶液中除钨具有良好的应用潜力。
Considering the different geochemical enrichment behaviors of tungsten and molybdenum, three kinds of adsorbents, ferric manganese composite oxide (FMBO), iron hydroxide (Fe (OH) 3) and manganese dioxide (MnO2) Separate tungsten. The results show that iron-manganese complex oxide (FMBO) is best suited for the removal of tungsten from molybdate solutions. The Fe-Mn composite oxides have good applicability over a wide range of p H (6.9-11.3), with tungsten removal rates of over 80% and molybdenum losses of less than 3%. In addition, the Fe-Mn composite oxide can be regenerated with 3 mol / L sodium hydroxide, and the tungsten removal rate can still remain unchanged after 5 adsorption-desorption-regeneration cycles. It is indicated that the removal of tungsten from molybdate solution by iron-manganese complex oxide adsorption has good potential.