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1.
公开(公告)号:US5961939A
公开(公告)日:1999-10-05
申请号:US54121
申请日:1998-04-02
IPC分类号: G03C5/00 , C01G5/00 , C02F1/54 , C02F1/62 , C02F1/66 , C02F1/68 , G03C5/31 , G03C5/395 , G03C11/24 , C22B11/00
CPC分类号: C22B11/046 , C02F1/54 , C02F1/685 , G03C5/3952 , C02F1/66 , C02F2103/40 , G03C5/31 , Y02P10/214
摘要: There is provided a method for removing silver from photoprocessing solutions containing hardening agents which comprises:a) adding a chelating agent to the photoprocessing solution in an amount sufficient to inhibit the precipitation of the high valent cations of the hardening agents;b) adding a base to adjust the pH of the photoprocessing solution to a value above 5.5; andc) adding a chemical precipitant for the silver contained in the photoprocessing solution;and optionally adding as a final component a flocculating agent which causes the precipitate to grow in size.
摘要翻译: 提供了一种从含有硬化剂的光处理溶液中除去银的方法,其包括:a)以足以抑制硬化剂的高价阳离子沉淀的量向光处理溶液中加入螯合剂; b)添加碱以将光处理溶液的pH调节至高于5.5的值; 和c)为光处理溶液中所含的银添加化学沉淀剂; 并且任选地将作为最终组分的絮凝剂加入使絮凝剂的尺寸增大。