Study on green enrichment and separation of copper and iron components from copper converter slag

摘要：

　　A green selective enrichment and separation technique for recovering copper and iron valuable components from Daye copper converter slag is presented,by adopting the high-temperature modifying method.Thermodynamic calculation shows that the copper and iron components were individually enriched as metallic copper and magnetite phase in the temperature range of 1500-1700 K,and were precipitated and grown during the cooling process.The experimental results show that the volume fraction of magnetite could he from 20% to 50%,and the grain size from 20 to 60μm,as the conditions were modification temperature at 1653K,air flow rate 7 L/min,oxidation time 6min and cooling rate 1 ℃/min.Most of the copper component was deposited at the bottom of modified slag as the metallic copper block,and the others were distributed as the form of fine grain in the modified slag The iron concentrate of 60.19%(tω)Fe at 90% recovery rate and copper concentrate of 92.97%(ω)Cu at 62.32% recovery rate could he obtained by gravity and two stage magnetic separation.

关键词： enrichment separation copperand iron components copper converter slag

作者: Hongyang Cao Jimin Wang Li Zhang Zhitong Sui

作者单位: Research Department ofRare Metcds, Guangzhou Research Institute of Non-ferrous Metals, Guangzhou, Gu School of Materials and Metallurgy, Northeastern University, Shenyang, Liaoning, 110819, China

会议类型: 国际会议

会议名称: The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))

会议地点: 北京

会议语种:英文

页码: 740-748

在线出版日期: 2012-09-05（万方平台首次上网日期，不代表论文的发表时间）