METHOD FOR NOBLE METAL RECOVERY Russian patent published in 2006 - IPC C22B11/02 C22B7/00 

Abstract RU 2276196 C1

FIELD: noble metal metallurgy, in particular recovery of non-ferrous, noble metal and alloys thereof from debris of electronic devices and components.

SUBSTANCE: claimed method includes disintegration of radio-electronic debris, vibrating treatment with separation of heavy fraction containing noble metals, metal separation and recovery, wherein radio-electronic debris is sorted, and metal components are separated, remaining debris part is treated with separation of heavy fraction. Said fraction after separation is mixed with preliminary separated metal components and mixture is subjected to oxidative melting with feeding of air blowing in amount of 1.15-0.25 nm3 per 1 kg of mixture. Further obtained alloy is electrolitically refined in copper sulfate solution and noble metals are recovered from formed slurry. Method of present invention makes it possible to isolate 98.2 % of gold, 96.9 % of silver and 98.2 % of platinum.

EFFECT: method of increased noble metal yield.

2 dwg, 6 ex

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RU 2 276 196 C1

Authors

Teljakov Aleksej Nail'Evich

Shalygin Len Mikhajlovich

Ikonin Leonid Valentinovich

Teljakov Nail' Mikhajlovich

Dates

2006-05-10Published

2004-12-27Filed