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    • 41. 发明专利
    • Method and system for treating fine powder containing calcium component and lead component
    • 用于处理包含钙组分和铅组分的精细粉末的方法和系统
    • JP2008062169A
    • 2008-03-21
    • JP2006242290
    • 2006-09-07
    • Taiheiyo Cement Corp太平洋セメント株式会社
    • ICHINOTSUBO YUKITERUSUZUKI TAKAYUKIOGAMI TAKEAKIMIURA KEIICHI
    • B09B3/00C22B3/44C22B7/02C22B13/00C22B26/20
    • Y02P10/234
    • PROBLEM TO BE SOLVED: To provide a method for treating fine powder by which a calcium component and a lead component can be separated and recovered from fine powder containing the calcium component and the lead component by a simple operation while reducing the number of treatment steps and chemicals to be used. SOLUTION: The method for treating fine powder comprises: a step (A) of mixing fine powder containing the calcium component and the lead component, water and a sulfurizing agent to obtain slurry containing sulfurized lead being solid content; a step (B) of adding sulfuric acid to the slurry obtained in the step (A) to adjust the pH of the slurry to 1.5-7.5 and obtain the slurry containing sulfurized lead being the solid content and calcium sulfate; a step (C) of adding a collecting agent to the slurry obtained in the step (B) to hydrophobize the sulfurized lead in the slurry; and a step (D) of subjecting the slurry obtained in the step (C) to flotation treatment to obtain a floating mineral containing the sulfurized lead and a precipitated mineral containing calcium sulfate. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种处理细粉的方法,通过简单的操作,可以通过简单的操作将钙成分和铅成分从含有钙成分和铅成分的细粉分离并回收,同时减少 处理步骤和使用的化学品。 解决方案:处理细粉的方法包括:将含有钙成分的细粉和铅成分的混合物和水和硫化剂混合以获得含有硫化铅的浆料为固体成分的工序(A) 在步骤(A)中获得的浆料中加入硫酸以将浆料的pH调节至1.5-7.5的步骤(B),并获得含有固体含量的硫化铅和硫酸钙的浆料; 向所述工序(B)中得到的浆料中添加收集剂以使所述浆料中的硫化铅疏水化的工序(C) 以及将步骤(C)中获得的浆料进行浮选处理以获得含有硫化铅的浮选矿物和含有硫酸钙的沉淀矿物的步骤(D)。 版权所有(C)2008,JPO&INPIT