硫酸浸出转底炉高锌铅粉尘的研究  

Study on Leaching High Zn-Pb Dust from Rotary Hearth Furnace by Sulfuric Acid Solution

作　　者：诸荣孙[1] 吴争[1] 伊廷锋[1] 夏征宇[2] 

机构地区：[1]安徽工业大学化学与化工学院,安徽马鞍山243002 [2]马钢股份有限公司,安徽马鞍山243000

出　　处：《矿冶工程》2012年第3期103-106,共4页Mining and Metallurgical Engineering

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.

关 键 词：高锌铅粉尘 硫酸浸出 硫酸锌 针铁矿法 除铁 除锰 

分 类 号：TF111[冶金工程—冶金物理化学]