Eco-Goldex E series agent (compound) is a special chemical compound that is used to strip precious metals from waste materials including the following:
Recoverable metals include Au, Ag, Pd, Pt from electronic materials such as junk computers, cell phones, telecommunication boxes, connectors, jewellery etc.
- Solar panel materials.
Recoverable materials include high purity mono-Si (99.9% or over), Ag.
- Car Catalytic converters. Recoverable metals include Pd, Pt…
The stripping process is probably the simplest approach in the methods available in the market. Just simply dissolve the E series agent in hot water (~40-60oC) with about 5% agent concentration in stripping solution.
Precious metals that exposed to the stripping solution will be converted into soluble ions in solution.
Precious metals insoluble ions can be recovered through three methods:
- Zinc cementation
This method is suitable for any operational scale and precious metal concentration in solution. This is a general precious metal precipitation process, all precious metals will be dropped off from the pregnant solution and each metal will be separated through conventional chemical methods. precious metal concentration in the pregnant solution can be high or low.
- Chemical Precipitation
This method is suitable for most small scale operators and hobbyists. Precious metal concentrations are usually high in the pregnant solution for the best precipitation result.
- Electrowinning process
It is recommended for large scale and continuou s operation; hobbyists can also use this method through simple electrowinning cells.