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Jiangtao LiZhongwei Zhao Caifang Cao Gang ZhangGuangsheng Huo 《International Journal of Refractory Metals and Hard Materials》2012,30(1):180-184
In this paper, “nascent” Fe(OH)3 as carrier precipitation and NaHCO3 as buffer agent were used to extract molybdenum from the complex Ni-Mo ore leach solution. The effects of different variables on the molybdenum extraction, such as the dosage of FeCl3 and NaHCO3 and the reaction temperature and time, were studied. The results showed that over 99% of molybdenum were extracted in 2 h at 25 ± 1 °C under the conditions of mole ratio of Fe3+/Mo 2.2-2.5 and mass ratio of NaHCO3/Mo 0.7-1.5. About 92% of Mo in the Fe(OH)3 precipitation can be leached by NH3⋅H2O to prepare the ammonium molybdate solution with about 100 g/L Mo. After treating with NH3⋅H2O, the Fe(OH)3 precipitation was dissolved with HCl to obtain the FeCl3 solution (FeCl3 500 g/L) which can be reused for the next round of experiments. 相似文献
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微波等离子体是新研制的一种原子发射光谱分析激发源,其特点是结构简单、造价低、激发效率高,是一种有实际开发价值的分析光源。我们用摄谱法对其性能作了初步研究,主要是酸性、气流量、输入功率的影响,其目的在于探索把它应用于摄谱分析的可能性。 相似文献
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