氧化银法生产高纯度氰化银钾的研究

Fabrication of High Purity Potassium Silver Cyanide by Silver Oxide Intermediate

摘要:

以粗银为原料，通过氧化银作为中间产物合成了氰化银钾。保持金属银过量投料，控制氰化银钾溶液浓缩水量是得到高纯度产品和高收率的关键。此方法具有对原料要求低、使产品纯度高和白银一次利用率高的优点，适合中小企业生产。

Abstract:

Described a novel method for producing high purity potassium silver cyanide [KAg (CN)2] that uses silver oxide [Ag2O] as an intermediate and crude silver as a silver source (surplus silver from silver nitrate production). To obtain high quality product, the evaporation of water from the KAg (CN)2 solution should be carefully controlled.