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    • 1. 发明公开
    • 동분말의 제조 방법 및 동분말
    • 生产铜粉和铜粉的工艺
    • KR1020100071970A
    • 2010-06-29
    • KR1020107004861
    • 2008-09-22
    • 미쓰이 긴조꾸 고교 가부시키가이샤
    • 아오키,아키라나카무라,요시노부사카우에,타카히코
    • B22F9/24B22F1/00C22C9/00H01B5/00
    • B22F9/24B22F1/0014
    • A process for producing a copper powder which has a particle size distribution with an extremely narrow width and is reduced in impurity content; and a copper powder which is obtained by the process, has heightened conductivity, is homogeneous, and has high quality. The process for copper powder production comprises: adding a hydrazine-based reducing agent to a copper salt compound slurry obtained by adding an alkali solution to an aqueous copper salt solution to obtain a slurry of cuprous oxide; washing the cuprous-oxide slurry with water and slurrying the oxide again; and adding a hydrazine-based reducing agent again to the resultant slurry of the washed cuprous oxide. In this process, a phosphorus compound is added to the reaction slurry before completion of the final reduction reaction so as to result in a phosphorus/copper molar ratio, P/Cu, in the range of 0.0001-0.003.
    • 1.一种铜粉的制造方法,其特征在于,粒径分布窄,杂质含量降低; 并且通过该方法获得的铜粉末具有提高的导电性,是均匀的,并且具有高质量。 铜粉生产方法包括:向通过将碱溶液加入到铜盐水溶液中得到的铜盐化合物浆料中加入肼系还原剂,得到氧化亚铜的浆料; 用水洗涤氧化亚铜浆料,再次将氧化物再浆化; 并向所洗涤的氧化亚铜的所得浆料中再次加入肼类还原剂。 在该方法中,在最终的还原反应完成之前,向反应浆料中加入磷化合物,使磷/铜的摩尔比P / Cu在0.0001-0.003的范围内。