GOLD recovery from USSR ceramic ICs
67.5 هزار بار بازدید -
6 سال پیش
-
The ceramic ICs are washed
The ceramic ICs are washed in molten lead and silver bath. Cupellation, dore dissolution in nitric, gold residue digestion in aqua regia, deNO-xing , dilution, filtration, precipitation with sodium metabisulphite, melting,. SIlver recovery with sodium formate, melting.
6 سال پیش
در تاریخ 1397/06/09 منتشر شده
است.
67,506
بـار بازدید شده