Process for producing silver powder through liquid phase reduction method
The invention discloses a process for producing silver powder through a liquid phase reduction method. The process includes the following steps that a, a silver salt solution is prepared; b, the silver powder is prepared, wherein a silver nitrate solution is firstly heated to 35 DEG C to 40 DEG C, a...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a process for producing silver powder through a liquid phase reduction method. The process includes the following steps that a, a silver salt solution is prepared; b, the silver powder is prepared, wherein a silver nitrate solution is firstly heated to 35 DEG C to 40 DEG C, and then an alkaline matter solution is added; the silver nitrate solution is continuously heated to 47 DEG C to 53 DEG C, and a dispersing agent is added; the silver nitrate solution is continuously heated to 58 DEG C to 61 DEG C, and a reducing agent is added; and an initial silver powder product is obtained until a chemical reaction in the silver nitrate solution is complete; and c, the silver powder is washed, wherein deionized water is added into a reaction still, the initial silver powder product is thoroughly washed and dried, and silver powder finished products are obtained. The process is used for producing the silver powder, losses of the silver powder in the washing process are greatly reduced, the yield |
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