摘要
采用浮选—还原焙烧—磁选工艺对某铜冶炼渣回收铜、铁进行研究。试验结果表明,采用硫化浮选法回收铜渣中的铜,可得到铜品位31.29%、铜回收率87.81%的铜精矿;选铜后的尾矿再通过还原焙烧—磁选工艺回收铁,可得到铁品位92.6%、铁回收率91.33%的还原铁粉。
The " flotation-reduction roasting-magnetic separation" beneficiation-metallurgical process is used to study the recovery of copper and iron from a copper smelting slag.The test results show that the copper concentrate with copper grade of 31.29% and copper recovery of 87.81% can be first obtained by sulfuration-flotation method from the copper smelting slag.After the copper beneficiation,a reduced iron powder with iron grade of 92.6%and iron recovery of 91.33%can be obtained by a reduction roasting-magnetic separation process from the copper tailings.
引文
[1]姜平国,吴朋飞,胡晓军,等.铜渣综合利用研究现状及其新技术的提出[J].中国矿业,2016,25(2):76-79.
[2]赵凯,程相利,齐渊洪,等.水淬铜渣的矿物学特征及其铁硅分离[J].过程工程学报,2012,12(1):38-43.
[3]曹志成,孙体昌,薛逊,等.铜渣转底炉直接还原磁选与熔分工艺比较[J].中南大学学报(自然科学版),2017,48(10):2565-2571.
[4]ALTER H.The composition and environmental hazard of copper slags in the context of the basel convention[J].Resources Conservation&Recycling,2005,43(4):353-360.
[5]DONG X U,TIE J C,JIN A C.Iron recovery from copper slag by a combined technique of high-temperature reduction roasting and magnetic separation[J].Mining and Metallurgical Engineering,2017.
[6]李博,王华,胡建杭,等.从铜渣中回收有价金属技术的研究进展[J].矿冶,2009,18(1):44-48.
[7]朱海锋,黄红军,孙伟,等.电炉渣浮选的工艺改造研究与生产实践[J].有色金属(选矿部分),2014(4):64-66.
[8]刘瑜,吴彩斌,雷存友,等.从冶炼渣选铜尾矿中综合回收铁新工艺研究[J].有色金属科学与工程,2014(5):141-144.
[9]赵凯,宫晓然,李杰,等.直接还原法回收铜渣中铁、铜和锌的热力学[J].环境工程学报,2016,10(5):2638-2646.
[10]朱立全,胡晓军,姜平国,等.钢铁冶金过程脱铜方法研究的发展和现状[J].钢铁研究学报,2014,26(8):1-7.