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                银怎么回收,银回收的方法?
                发布时间:2022/11/19 浏览次数:215次

                详解贵←金属提炼步骤:

                1、电解法:此法与电镀原理一样,只是对阳极(不锈钢)面积要小,阴极→面极要大,对阴极也不必要求清洗得很¤干净,主要便于对银剥离更方便。

                2、化学法:

                (1)将执模出来的银♀屑收集起来,用硝酸溶解银碎屑,并加热将硝酸赶跑(不冒烟)。

                (2)将溶液过滤,除去灰尘、木屑■等杂物,滤纸用去离子水冲洗数次。

                (3)将上㊣述溶液冲稀3-5倍,将铁片或紫铜块放入】溶液中,银很快将被置换出来。(要将溶液经常搅动)。

                (4)若铜块不⊙再反应(即银不〗再析出)时将溶液倒入』另一个烧杯中,杯底@ 为海棉状银再过滤,再用水冲洗海棉状银至中性(PH试纸测试)

                (5)将冲洗干净的海棉状银及滤纸放入锅中用火枪灼烧出银块。

                (6)银炸色液中银的回收(化学抛光液)

                抛光液主要〇成份为氰化钾双氧水,故主要破氰后(银)即可析出。将抛光液倒入杯中,加硝酸使PH值在5左右然后在电炉上煮沸1-2分钟(银)即可析出。