Polypropylene Gold Electrowinning Cell
Electrowinning is the process whereby metals, such as gold, are recovered from concentrated solutions by applying a voltage across electrodes immersed in the concentrated solution. The voltage applied across the electrodes (cathode and anode) results in a cathodic reaction which in turn results in the deposition of the metal from solution onto the cathode
Polypropylene Gold Electrowinning cell components:
The cathode is the electrode at which reduction occurs. The negative terminal of a DC supply is connected to the cathode.
The anode is the electrode at which oxidation occurs. The positive terminal of a DC supply is connected to the anode.
Our polypropylene Electrowinning cell is engineered as a simple, robust and easy to operate unit having minimal maintenance requirements.
The Electrowinning cell consists of a sandwich arrangement of nine anode assemblies on either side of cathode compartments, all contained in a polypropylene tank. The cathodes are constructed from stainless steel rod baskets filled with stainless steel mesh, and housed in a polypropylene insulation frame. The abodes are constructed from stainless steel strips. The cathodes and anodes are positioned alternately within the cell.
The gold containing electrolyte solution is pumped into the cell at one end and flows through all of the electrodes prior to exiting the cell via the overflow weir at the opposite end. Solution bypassing is minimised in the design resulting in the optimisation of throughput efficiency.
On completion of the Electrowinning cycle the DC supply is switched off. The cathode pin bar and conductor are removed, after which the cathodes are manually removed from the cell. These cathodes are washed with high pressure water to recover the metal sludge that has been deposited onto the mesh. Once the cathodes have been washed they are returned to the cell and the cathode pin and conductor refitted. The Electrowinning process can then re-commence.
The hinged hood has a locking facility to increase the security associated with the cathode sludge. The hood provides the means for adequate ventilation of the cell by connecting an extractor fan to the centrally situated ventilation manifold.
- Stainless Steel Knitted Mesh
- Stainless Steel Cathode Basket
- Stainless Steel Cathode
- Polypropylene Cathode Holder Insulation Frame
- Stainless Steel Anode