发明名称 |
SILVER POWDER AND METHOD FOR PRODUCING SAME |
摘要 |
A method for producing silver powder wherein a silver solution containing a silver complex and a reductant solution are continuously mixed to provide a reaction liquid, the method including: a step of preparing a silver nucleus solution wherein a silver solution for nucleation which contains a silver complex, a solution containing a strong reductant, and a dispersant are mixed to provide the silver nucleus solution; a step of preparing a reductant solution containing nuclei wherein the silver nucleus solution obtained and a weak reductant having a standard electrode potential higher than that of the strong reductant are mixed to obtain the reductant solution containing nuclei; and a step of growing particles wherein the reductant solution containing nuclei and a silver solution for particle growth containing a silver complex are continuously mixed to provide a reaction solution, in which the silver complex is reduced to thereby grow silver particles. |
申请公布号 |
US2015099136(A1) |
申请公布日期 |
2015.04.09 |
申请号 |
US201314382375 |
申请日期 |
2013.02.27 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
Nishimoto Masamu;Okabe Yoshihiro;Kanada Satoshi |
分类号 |
B22F9/24;C22C5/06;B22F1/00 |
主分类号 |
B22F9/24 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method for producing silver powder wherein a silver solution containing a silver complex and a reductant solution are continuously mixed to provide a reaction liquid, in which the silver complex is reduced to obtain a silver particle slurry, and then, silver powder is produced via steps of filtration, washing, and drying, the method comprising:
a step of preparing a silver nucleus solution wherein a silver solution for nucleation containing a silver complex, a solution containing a strong reductant, and a dispersant are mixed to obtain the silver nucleus solution; a step of preparing a reductant solution containing nuclei wherein the silver nucleus solution obtained and a weak reductant having a standard electrode potential higher than that of the strong reductant are mixed to obtain the reductant solution containing nuclei; and a step of growing particles wherein the reductant solution containing nuclei and a silver solution for particle growth containing a silver complex are continuously mixed to provide a reaction solution, in which the silver complex is reduced to thereby grow silver particles. |
地址 |
Tokyo JP |