In order to make the Electrowinning pilot plants to be versatile, we have to consider the 5 elements.
No.1, the material of electrolyte solution.
You adopt the aqueous solution system or molten salt system. Here we just focus on the aqueous solution system, by which we could get the follow metal to be electrowinning: Cu, Zn, Co, Ni, Fe, Cr, Mn, Cd, Pb, Sb, Sn, In, Au, Ag, etc.
No. 2, The material of Anode plate and Cathode plate.
If we do Au/Ag, we could adopt Titanium plating Iridium as anode plate, and Titanium as Cathode plate.
If we make Cu, we could adopt lead-tin alloy as anode plate, and stainless steel as Cathode plate.
If we make Pb, we could adopt stainless steel as anode plate, and stainless steel as Cathode plate.
No. 3, Rectifier power could be adjusted.
Different metal electrowinning demand different voltage and current. So we could make the Rectifier power in Output voltavel 0-30VAdjustable, and current 0-100A adjustable.
No. 4, Flow Rate of the electrolyte solution.
Usually the Electrolyte circulation is powered by a pump and speed is adjusted according to Teflon ball valve.
No.5, The temperature of the electrolyte solution.
We could equipped the EW pilot plant with a heating bar and the temperature could be adjusted.
By the above 5 adjustable factors, we could make a versatile EW pilot plant for extract different kind of metal production from the aqueous solution system.
The follow case shows one of versatile EW pilot plant for copper and cobalt.
| Name | Specification | QTY | Explain |
| Electrowinning pilot plant | Size：
L700*W350*650mm Weight: about 40 kgs |
1 set |
1. Tank is 10mm PP welding
2. Liquid level height: 200~250mm 3. Cathode plate and Anode plate immersion height：150mm 4. Cover: transparent acrylic |
| Copper bar between the tank | L350*W30*T5mm | 5 PCS | |
| Copper bar on side the tank | L350*W30*T5mm | 2 PCS | |
| Positive and negative conductive cable (connected rectifier power supply) |
L2000*Ø35mm |
2 PCS |
Copper core cable (including lugs) |
| Bolts | Ø8mm | 19 PCS | 316L stainless steel |
| rectifier power support frame | 1 PC | PP welding | |
| Cathode plate① | L300*W200*T3mm | 2 PCS | 316L stainless steel，Submerged plate height 150mm |
| Cathode plate② | L300*W200*T3mm | 2 PCS | Pure titanium plate |
| Anode plate① | L300*W200*T5mm | 3 PCS | graphite |
| Anode plate② | L300*W200*T3mm | 3 PCS | Titanium substrate, coated iridium tantalum surface coating 5-8UM |
| Anode plate③ | L300*W200*T3mm | 3 PCS | Four-element alloy lead plate (Pb-Ag-Ca-Sr), can be immersed plate height 150mm |
| circulating pump | 15W | 1 set | Electrolyte circulation speed is adjusted according to Teflon ball valve,
Pump head tetrafluoroides |
| Liquid pump pipes | ¢20mm | 1 group | Inlet and outlet circulation fittings (Teflon material) |
| rectifier power | PKY-DY100-30FV | 1 set | Input voltage AC220V,50-60HZ
Output current 0-30V Adjustable, 0-100A adjustable, with temperature control function |
| Heating bar | 2KW | 1 PCS | External spray Teflon, high temperature and corrosion resistant |
| Packing | Wooden box for export | 1 PCS |
A little knowledge: Aluminum electrolysis can not be carried out in an aqueous solution, because in an aqueous solution, only hydrogen can be precipitated on the cathode and aluminum cannot be precipitated. Therefore, molten salt electrolyte must be used. The electrolyte used for aluminium electrolysis is composed of cryolite (Na3AlF6), alumina (Al2O3) and other salt additives (such as AlF3, CaF2, MgF2, LiF).
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