摘要
控制pH值,对高铁低锌萃铟废水加入硫精矿直接制备锌精矿和铁红进行了研究.分析了反应机理,考察了不同硫化物对锌的回收效果,探讨了超声波辅助硫精矿制备锌精矿和高纯铁红的工艺条件,并利用SEM对锌精矿粒度和形貌进行表征.在萃铟废水中含铁60.47g/L、锌28.65g/L时,在常温下调节pH值为2,加入-0.074mm硫精矿,超声处理50min的实验条件下,制得了含锌50.36%的锌精矿产品,锌回收率达95.29%,锌含量和回收率分别比未经超声处理提高了18.52%和23.67%.制得的高纯铁红符合国家SJ/T10383-93标准一等品的要求,铁回收率为92%.
Recovery of zinc concentrate and preparation of iron red from high iron and low zinc wastewater from extraction of indium were carried out by controlling pH value of the solution. The recovery effect of zinc using different sulfides was studied. Technological conditions for preparing zinc concentrate and high-purity iron red using ultrasonic were investigated, and the morphology and granularity of zinc concentrate also characterized through SEM analysis. For the wastewater containing 60.47 g/L iron and 28.65 g/L zinc, the optimum process conditions were defined as pH value 2, pyrite concentrate -0.074 mm, and ultrasonic treatment time 50 min. The result showed that the product of zinc concentrate was obtained with 50.36% zinc, and its recovery rate reached 95.29%, which was much higher than 18.52% and 23.67% respectively under normal treatment. The recovery rate of iron reached 92% with high-purity iron red which can be qualified as the first grade product according to state standard of S J/T10383-93.
出处
《过程工程学报》
CAS
CSCD
北大核心
2010年第1期84-90,共7页
The Chinese Journal of Process Engineering
基金
广东省科技攻关基金资助项目(编号:2007B010600036)
韶关市科技创新基金资助项目(编号:韶科2008-07)
关键词
超声
萃铟废水
硫精矿
锌精矿
铁红
ultrasound
wastewater from indium extraction
pyrite concentrate
zinc concentrate
iron red
