HBL101从镍钼矿焙烧料高酸浸出液中直接萃取钼的研究

采用新型萃取剂HBL101从镍钼矿焙烧料高酸浸出液中直接萃取钼。考察有机相组成、料液酸度、相比、振荡频率、平衡时间、温度对钼萃取过程的影响,并绘制了HBL101萃钼等温曲线。结果表明,在优化的工艺条件下,钼萃取率达96.8%以上,有机相饱和容量为12.09g/L;负载有机相用纯水洗涤后经3级逆流氨水反萃,钼反萃率达99.9%以上,实现了钼镍分离及钼的富集转型。

Study on Molybdenum Extraction with HBL101 from High Acid Leaching Solution of Ni-Mo Ore after Roasting

A novel extractant of HBL101 was used to extract molybdenum directly from a strong acid leaching solution of Ni-Mo ore after roasting. The effects of organic phase composition, acidity of feed solution, phase ratio, oscillation frequency, equilibrium time and temperature on molybdenum extraction were investigated. The extraction isotherm of molybdenum with HBL101 was drawn. The results show that molybdenum extraction rate can reach 96.8% above and saturation capacity of organic phase is 12.09 g/L under the optimum conditions. The molybdenum back extraction rate is 99.9% above after the loaded organic phase is washed by pure water and three-stage of counter-current stripped by ammonia. Separation of molybdenum and nickel, as well as enrichment and transformation of molybdenum are finally achieved.