Recovery of Zn-Bearing Blast Furnace Dust by Alkaline Extraction

摘要：

　　This study evaluates the efficiency of extracting of zinc from blast furnace dust via alkaline leaching.Effects of several leaching variables,i.e.leaching time,NaOH concentration,phase ratios (liquid/solid),temperature and on zinc recovery (%) were investigated.It was found that over 94.62% of Zn can be extracted from blast furnace dust when the leaching process is operated in 6 mol/L NaOH at 90 ℃,10/1 liquid/solid ratio,and 90 min leaching time.Zinc powder with purity of 99.7% can be obtained by electrowinning after Pb and other metal ions in the leaching solution were removed by sulfide precipitation.After the Zn was recovered,the Fe and C in dusts can be recycled in the blast.

关键词： Rocovery Zinc Blast Furnace Dust Alkaline leaching Electrowinning

作者: Chenglong Zhang Yunxing Yin Jingwei Wang Jianfeng Bai Yuan Zhou Wenjie Wu

作者单位: School of Urban Development and Environmental Engineering Shanghai Second Polytechnic University Shanghai 201209,China

会议类型: 国际会议

会议名称: Conference on Environmental Pollution and Public Health (2012年环境污染与大众健康学术会议(CEPPH2012))

会议地点: 上海

会议语种:英文

页码: 151-154

在线出版日期: 2012-08-09（万方平台首次上网日期，不代表论文的发表时间）