浅谈贵冶铜阳极泥中硒的回收  

Discussion on Recovering Selenium from Anode Slim of Guixi Smelter

作　　者：周利明[1] 

机构地区：[1]江西铜业集团公司贵溪冶炼厂,江西贵溪335424

出　　处：《铜业工程》2012年第6期4-6,共3页Copper Engineering

摘　　要：针对贵冶铜阳极泥在回转窑硫酸化焙烧蒸硒工序过程中存在二氧化硒吸收不完全、粗硒回收率低等问题,通过强化过程控制和工艺优化,摸索出了回转窑泥酸比、温度、负压三大工艺参数控制模式,采用低泥酸比硫酸化焙烧和烟气高效吸收成套技术,蒸硒渣含硒量稳定在0.15%～0.29%,粗硒回收率提高了20%以上。Aiming at the problems of uncompleted absorption and iow rate of selenium dioxide recovery during the sulfating roasting process in rotary kiln, through enhanced process control and process optimization, the three process parameters control mode of rotary kiln mud acid rate, temperature and negative pressure are explored. After applying the whole set of technology of low mud acid rate sulfating roasting and efficient absorption, the selenium content of steam selenium residue stable at 0.15 -0.29%, the recovery rate of crude selenium is increased by 20%.

关 键 词：铜阳极泥 回转窑 硫酸化焙烧 DCS 硒回收率 

分 类 号：TF843.5[冶金工程—有色金属冶金]