摘要
采用硫酸酸浸工艺从某浮选铅尾矿中提锌,考察了物料粒度、硫酸用量、浸出温度、浸出时间、搅拌速度和浸出液固比对锌浸出率的影响。结果表明:浮选铅尾矿在物料粒度-0.074mm粒级占75%、硫酸用量15%、浸出温度60℃、搅拌速度200r/min、浸出液固比3.0mL/g条件下浸出1.5h,锌浸出率达90.71%;浸出液中Zn质量浓度18.94g/L,Cd、Fe、Mn、Ca、Mg等杂质含量较高,后续净化富集作业需予以关注。
An experiment was carried out for extraction of zinc from the tailings of lead flotation by adopting sulfuric acid leaching,and effects of grinding fineness,addition of sulfuric acid,leaching temperature,leach time,stirring speed and liquid-solid ratio on zinc leaching rate were investigated.The results show that the lead flotation tailings with the grinding fineness of-0.074 mm 75%are subjected to 1.5 h leaching at 60℃by adding 15%sulfuric acid with stirring speed at 200 r/min,liquid-solid ratio of 3.0 mL/g,resulting in zinc leaching rate of 90.71%.The obtained leachate has Zn at the concentration of 18.94 g/L,and high content of Cd,Fe,Mn,Ca and Mg,which needs attention in the subsequent purification and enrichment operation.
作者
郭拴全
郭梅
康敏
牛芳银
宁新霞
邢相栋
GUO Shuanquan;GUO Mei;KANG Min;NIU Fangyin;NING Xinxia;XING Xiangdong(Xi′an Northwest Nonferrous Geological Research Institute Co.,Ltd.,Xi′an 710054,Shaanxi,China;Shaanxi Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources,Xi′an 710054,Shaanxi,China;Xi′an University of Architecture and Technology,Xi′an 710054,Shaanxi,China)
出处
《矿冶工程》
北大核心
2025年第1期129-132,共4页
Mining and Metallurgical Engineering
关键词
浮选铅尾矿
硫酸浸出
氧化相
锌
氧化锌
铅锌尾矿
lead flotation tailings
sulfuric acid leaching
oxidation phase
zinc
zinc oxide
lead-zinc tailings
