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本文叙述了从照相胶片和X光胶片中回收银的方法。该方法系用含过氧化氢的氰化钠溶液浸取银过氧化氢的存在可增加氰化钠溶液浸取银的速度。该方法能用于工业生产。反复使用浸取液,可充分利用其中的CN~,从而使浸取液中银的浓度有所提高,然后通过电解回收银。该方法所得产品质量良好,产率很高。
This article describes a method for recovering silver from photographic film and X-ray film. The method of using hydrogen peroxide containing sodium cyanide solution to extract the presence of silver hydrogen peroxide can increase the speed of sodium cyanide solution leaching silver. This method can be used in industrial production. Repeated use of leaching solution, which can make full use of CN ~, so that the concentration of silver leaching solution has increased, and then recovered by electrolysis of silver. The method of product quality is good, the yield is high.