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在毛主席革命路线指引下,随着国民经济的不断发展,白银的消耗量愈来愈大,特别是电影、电视、摄影事业的发展,感光材料用银量更是不断增多。1973年,感光材料用银量占全国产银量的八分之一以上。据不完全统计,在感光胶片生产过程中,含银废料约占20%以上,而在影片洗印过程中,黑白片和彩色片的含银量,大约分别有50%和70%以上进入废定影液中。因而从废胶片和废定影液中回收白银,是增加白银生产的重要途径之一。
Under the leadership of Chairman Mao’s revolutionary line, along with the continuous development of the national economy, the consumption of silver is getting larger and larger, especially in the fields of film, television and photography. The amount of silver used in photographic materials is constantly increasing. In 1973, the amount of silver used in photographic materials accounted for more than one-eighth of the national total. According to incomplete statistics, in the production process of photographic film, silver-based scrap accounts for about 20%, while in the process of film printing, the silver content of black and white film and color film, respectively, about 50% and 70% into the waste fixer . Therefore, the recovery of silver from scrap film and waste fixer is one of the important ways to increase silver production.