铁矾渣直接还原—磁选—反浮选工艺探索  

Technical Exploration of Jarosite Residue with Direct Reduction-Magnetic Separation-Reverse Flotation

作　　者：曹晓恩[1] 徐洪军[1] 郭玉华[1] 周和敏[1] 齐渊洪[1] 

机构地区：[1]钢铁研究总院先进钢铁流程及材料国家重点实验室,北京100081

出　　处：《有色金属（冶炼部分）》2016年第6期13-15,共3页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家科技支撑计划项目(2012BAB14B00)

摘　　要：采用配碳球团直接还原铁矾渣得到金属化球团,烟气回收次氧化锌和铅,金属化球团经磨矿磁选得到铁精矿Ⅰ,之后再进行浮硅抑铁反浮选得到铁精矿Ⅱ。研究表明,在碱度为2.5、配碳比为1.4、1 300℃还原30min时,金属化率达到98.47%,铅、锌挥发率分别达到86.25%和98.54%。将金属化球团磨样后在159.2kA/m时磁选效果最好,铁精矿Ⅰ品位为46.66%,铁回收率达到79.79%,经反浮选后得到品位60.30%的铁精矿Ⅱ。Metallized pellets were produced from Jarosite residue by direct reduction of carbon-containing pellets.Second zinc oxide and lead were recovered from flue gas.Iron concentrateⅠ was produced from metallized pellets by grinding and magnetic separation.Iron concentrate Ⅱ was obtained from iron concentrateⅠ by reverse flotation process of floating silicon and inhibition of iron.The results show that metallization rate is 98.47%,and volatilization rate of zinc and lead is 98.54% and 86.25% respectively under the optimum conditions including basicity of 2.5,n（C）/n（O）=1.4,reduction temperature of 1 300℃,and reduction duration of 30 min.Iron grade in concentrate Ⅰ is 46.66% with iron recovery of79.79% by magnetic field intensity of 159.2kA/m.Iron grade in concentrateⅡis 60.30%.

关 键 词：铁矾渣 直接还原 磁选 反浮选 

分 类 号：X705[环境科学与工程—环境工程]