摘要
研究了硫酸浸出转底炉高锌铅粉尘提取锌的工艺条件和参数。最佳浸出工艺条件为:搅拌速度400 r/min,硫酸浓度为1.0mol/L,浸出温度为25℃,固液比为1∶8,浸出时间为0.5 h。在此条件下,锌的浸出率可达96%以上。采用针铁矿-氧化水解法除铁、过硫酸铵深度除铁锰、锌粉置换除杂的方法对浸出液净化处理,得到高纯度硫酸锌溶液,该溶液可直接电解制取锌或制取碱式碳酸锌和氧化锌。
The technological conditions and parameters of leaching high Zn-Pb dust to extract Zn from rotary hearth furnace by sulfuric acid solution were studied. The optimum leaching conditions were obtained as follows： the stirring rate was 400 r/min, sulfuric acid concentration was 1.0 mol/L, the leaching temperature was 25 °C , the solid-liquid ratio was 1 ： 8 and leaching time was O. 5 h. Under these conditions, the leching rate of zinc can reach above 96%. Purification treatment was conducted for the leaching liquid, including using geothite and oxidation-hydrolysis process to remove iron, using ammonium persulphate to remove iron and manganese, using zinc powder to replace and remove impurities, thus high purity zinc sulfate solution was obtained, which can be used to prepare zinc or basic zinc carbonate and zinc oxide by direct electrolysis.
出处
《矿冶工程》
CAS
CSCD
北大核心
2012年第3期103-106,共4页
Mining and Metallurgical Engineering
关键词
高锌铅粉尘
硫酸浸出
硫酸锌
针铁矿法
除铁
除锰
high Zn-Pb dust
sulfuric acid leaching
zinc sulfate
geothite process
iron removal
manganese removal
