摘要
为了最大化高硅低锗氧化锌烟尘(ZOD)中锌、锗提取效率,研究了采用响应曲面法(RSM)构建并优化了十二烷基硫酸钠(C_(12)H_(25)SO_(3)Na)辅助下的超声强化浸出过程,并建立了锌、锗浸出率的精确预测模型。结果表明:在单因素试验基础上,运用RSM确定的最优浸出条件为浸出温度70℃,液固体积质量比8 mL/1 g,初始酸质量浓度160 g/L,该条件下的锌浸出率达96.94%,锗浸出率为85.41%;C_(12)H_(25)SO_(3)Na在浸出过程中发挥了关键的硅胶抑制剂作用,有效阻止了硅离子聚合成硅胶,这一效果在超声波的协同作用下更为显著,体现了温度、超声波与C_(12)H_(25)SO_(3)Na三者之间的显著协同效应。研究结果能为高硅低锗氧化锌烟尘的资源化利用提供高效的回收策略,并为其他高硅废弃物的回收提供技术参考。
In order to maximize the extraction efficiency of zinc and germanium from high-silicon and low-germanium zinc oxide dust(ZOD),the ultrasonic enhanced leaching process assisted by sodium dodecyl sulfate(C_(12)H_(25)SO_(3)Na)was constructed and optimized by response surface method(RSM),and the accurate prediction model of zinc and germanium leaching rate was established.The results show that on the basis of single factor test,the optimal leaching conditions determined by RSM are leaching temperature of 70℃,liquid volume to solid mass ratio of 8 mL/1 g and initial acid mass concentration of 160 g/L.The leaching rates of zinc and germanium can reach 96.94%and 85.41%,respectively.C_(12)H_(25)SO_(3)Na plays a key role as a silica gel inhibitor in the leaching process,effectively preventing the polymerization of silicon ions into silica gel,and this effect is more significant under the combined ultrasonic treatment,reflecting the synergistic benefit between temperature,ultrasound and C_(12)H_(25)SO_(3)Na.The research results provide an efficient recovery strategy for the resource utilization of high-silicon and low-germanium zinc oxide dust,and provide an important technical reference for the recovery of other high silicon waste.
作者
韦洁
裴启飞
陆占清
梁辰
付光
徐英杰
夏洪应
WEI Jie;PEI Qifei;LU Zhanqing;LIANG Chen;FU Guang;XU Yingjie;XIA Hongying(Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Provincial Key Laboratory of Intensification Metallurgy,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Chihong Zn&Ge Co.,Ltd.,Qujing 655011,China)
出处
《湿法冶金》
CAS
北大核心
2024年第5期573-582,共10页
Hydrometallurgy of China
基金
国家重点研发计划项目(2021YFC290281)
云南省锌资源技术创新中心项目(202405AK340004)
云南省“兴滇英才支持计划”产业创新人才项目(云发改人事〔2019〕1096号)。
关键词
高硅低锗氧化锌烟尘
响应曲面法
超声波
活化剂
十二烷基硫酸钠
浸出
锌
锗
high-silicon and low-germanium zinc oxide dust
response surface method
ultrasound
activator
sodium dodecyl sulfate
leaching
zinc
germanium
