Recovery of molybdenum from alkali leaching solution of low-grade molybdenum concentrate by ion exchange
Recovery of molybdenum from alkali leaching solution of low-grade molybdenum concentrate by ion exchange
复制标题
离子交换从低品位钼精矿碱浸液中回收钼
DOI：
10.1515/gps-2015-0033
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发表时间：
2015-08-01
影响因子：
4.3
通讯作者：
Cao, Yaohua
中科院分区：
文献类型：
--
作者：
Gao, Zhaoguo;Zhang, Bo;Cao, Yaohua
摘要为了从低品位钼精矿碱浸液中提取钼，进行了静态和动态离子交换实验。静态实验结果表明，在pH为3.5时，D201树脂的吸附容量为93.50%，而D314树脂的吸附容量为95.47%。因此，我们选择D314树脂进行进一步的实验。动态实验结果表明，当浸出液流速为1 ml/min时，钼的吸附量可达96.77%。负载树脂可以用10%的氨水解吸。因此，洗脱液中Mo的最大浓度为122 g/l。在沉淀过程中，Mo回收率达到97.81%，所得氧化Mo产品符合GB/T24482-2009中YMo 55国家标准和ASTM A146-04 (2014) A级标准的要求。
Abstract In order to extract molybdenum (Mo) from alkali leaching solution of low-grade Mo concentrate, static and dynamic ion exchange experiments were performed. The static experiments results indicated that the adsorption capacity of D201 resins reached 93.50% at pH 3.5, while the adsorption capacity of D314 resins was 95.47%. Therefore, D314 resin was adopted for further experiments. The dynamic experiments results indicated that the adsorption capacity of Mo reached 96.77% when the flow rate of leaching solution was 1 ml/min. The loaded resin could be desorbed by 10% ammonia solution. In consequence, the maximum concentration of Mo in eluate was 122 g/l. In the precipitation process, the Mo recovery reached 97.81%, and the obtained Mo oxide products met the requirement of YMo 55 national standard in GB/T24482-2009 and Grade A standard of ASTM A146-04 (2014).