從鍍金(jīn)廢件(jiàn)中(zhōng)回(huí)收(shōu)金(jīn)的方(fāng)法(fǎ)有(yǒu)哪些(xiē)?
從鍍金(jīn)廢件(jiàn)中(zhōng)回(huí)收(shōu)金(jīn)的方(fāng)法(fǎ)有(yǒu)哪些(xiē)?答(dá):鍍金(jīn)廢件(jiàn)上(shàng)的金(jīn)可(kě)用(yòng)火(huǒ)法(fǎ)、化(huà)學(xué)法(fǎ)或(huò)电解(jiě)法(fǎ)進(jìn)行退(tuì)鍍,具體(tǐ)方(fāng)法(fǎ)如(rú)下(xià):(1)铅(qiān)熔退(tuì)鍍法(fǎ):先(xiān)将电解(jiě)铅(qiān)熔融,再将鍍金(jīn)廢件(jiàn)置于铅(qiān)液中(zhōng),使金(jīn)溶于铅(qiān)中(zhōng),取(qǔ)出退(tuì)金(jīn)後(hòu)的廢件(jiàn)。将含金(jīn)...
2023-12-04