反射炉水淬渣提铜除铁研究  

Study on Copper Extraction and Iron Removal from Reverberatory Water-quenched Copper Slag

作　　者：黄自力[1] 刘缘缘[1] 秦庆伟[1] 朱家栋[1] 

机构地区：[1]武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081

出　　处：《矿冶工程》2012年第5期82-85,89,共5页Mining and Metallurgical Engineering

摘　　要：采用XRF,XRD,XPS,SEM-EDS,Mossbauer等手段对炼铜反射炉水淬渣进行了工艺矿物学研究,结果表明,渣中含铜1.06%,主要以冰铜存在;TFe含量为36.41%,其中Fe2SiO453.5%,Fe3O432.5%,Fe2O314.0%。Fe的存在形态决定了在酸浸中铁会大量消耗酸,其浸出率可达82.6%,影响了铜的浸出,而加入H2O2可有效地抑制铁的浸出,铜的浸出率相应提高。在60℃、浸出30 min、搅拌速度500 r/min、酸浓度60 g/L、双氧水100 L/t时,铜的浸出率可达66.9%;双氧水的加入对电位有影响,对铜和铁的浸出分别起到促进和抑制作用,高电位更有利于铜的浸出。Process mineralogy study was carried out on the reverberatory water-quenched copper slag by XRF, XRD, XPS, SEM-EDS and Mossbauer spectroscope. The results showed that slag contained 1.06% Cu（ majority being in the form of matte） and 36.41% TFe among which 53.5% Fe2SiO4, 32.5% Fe304 and 14.0% Fe2O3. A large consumption of acid during acid leaching process being attributed to the existence form of iron, results in the iron leaching rate up to 82.6% while the copper leaching being restrained. An addition of H2O2 can effectively restrain the iron leaching and increase the copper leaching rate correspondingly. At a temperature of 60 ℃, with leaching time of 30 min and mixing speed of 500 r/min, acid concentration of 60 g/L and H2O2 dosage of 100 L/t, the copper leaching rate can reach 66. 9%. The addition of H2O2 bringing an effect on the potential, can promote copper leaching while inhibit iron leaching, due to high potential being more favorable to the copper leaching.

关 键 词：反射炉水淬渣 铜 浸出 冰铜 除铁 

分 类 号：TF111.17[冶金工程—冶金物理化学] TD925.7[矿业工程—选矿]