有机抑制剂鞣酸对黄铜矿和方铅矿浮选的影响

发布时间：2018-04-05 12:06

  本文选题：鞣酸　切入点：铜铅分离　出处：《有色金属工程》2016年06期

【摘要】：通过单矿物、人工混合矿、实际矿石浮选试验,吸附量和红外光谱测试,研究了鞣酸对黄铜矿和方铅矿浮选的影响及其与矿物的作用机理。结果表明,鞣酸对方铅矿具有强抑制作用,对黄铜矿浮选的抑制作用较小。当鞣酸用量为5 mg/L,浮选180 s时,黄铜矿回收率为83.30%,而方铅矿的回收率只有17.65%。吸附量测试表明,鞣酸在黄铜矿表面的吸附密度为2.03 mg/m2,在方铅矿表面能够达到6.05 mg/m2。红外光谱检测表明,鞣酸通过酚羟基与方铅矿表面发生作用,与黄铜矿作用则很弱,这正是鞣酸能抑制方铅矿的原因。
[Abstract]:The effect of tannic acid on the flotation of chalcopyrite and galena and its mechanism with minerals were studied by means of single mineral, artificial mixed ore, actual ore flotation test, adsorption capacity and infrared spectroscopy.The results show that tannic acid has a strong inhibitory effect on galena and less on flotation of chalcopyrite.When the amount of tannic acid is 5 mg / L and flotation time is 180 s, the recovery rate of chalcopyrite is 83.30 and that of galena is 17.65.The adsorption density of tannic acid on chalcopyrite surface is 2.03 mg / m ~ (2) and on galena surface is 6.05 mg / m ~ (2).Infrared spectroscopy showed that tannic acid acted on galena surface through phenolic hydroxyl group but weak on chalcopyrite which was the reason why tannic acid could inhibit galena.
【作者单位】： 江西理工大学江西省矿业工程重点实验室;北京矿冶研究总院矿物加工科学与技术国家重点实验室;
【基金】：国家自然科学基金资助(51504103) 江西理工大学博士启动基金(jxxjbs14015)
【分类号】：TD952
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本文编号：1714690