1. General Installation Overview
From the overall site view, the electrowinning cells are arranged in parallel rows on the steel structure, with a central walkway for operation and maintenance. This stage represents the mid-to-late phase of installation, including:
- Cell positioning, leveling, and alignment
- Installation of piping systems
- Installation of auxiliary structures (walkways, supports)
- Anti-corrosion and sealing works
Among these, parallelism and leveling of the cells are critical and are typically controlled within millimeter tolerances to ensure uniform current distribution.
2. Electrolyte Distribution Piping Inside the Cell
The second image clearly shows the internal electrolyte distribution system.
2.1 Structure of the Distribution Piping
The system typically uses PVC or other corrosion-resistant materials arranged in a rectangular or loop configuration at the bottom of the cell. Its main functions include:
- Uniform distribution of electrolyte
- Avoidance of dead zones or high-velocity areas
- Improvement of current efficiency and metal deposition uniformity
- The piping is usually installed near the bottom of the tank and fixed with supports.
2.2 Key Installation Points
(1) Level Control
The piping must be installed horizontally to ensure even flow distribution.
(2) Fixation
- Secure with proper brackets or clamps
- Prevent movement or vibration during operation
(3) Sealing of Connections
- Ensure tight sealing at joints and connections
- Prevent leakage or air ingress
(4) Anti-blockage Measures
- Ensure evenly distributed outlet holes
- Prevent debris from entering during installation
3. Cell Structure and Bottom Joint Sealing (Grouting)
How to Make Grouting Between EW Cells
3.1 Purpose of Joint Sealing
Bottom joint sealing is a critical but often underestimated step. Its main functions are:
- Prevent electrolyte leakage
- Improve structural stability
- Protect structural components from corrosive media
3.2 Common Materials
- Epoxy mortar
- Anti-corrosion sealants
- Acid- and alkali-resistant joint fillers
3.3 Construction Key Points
(1) Surface Preparation
- Clean dust, oil, and moisture
- Ensure a clean bonding surface
(2) Proper Filling
- Fill joints completely without voids
- Apply in layers if necessary
(3) Surface Finishing
- Ensure smooth and even surface
- Avoid liquid accumulation
(4) Curing Time
- Follow material specifications strictly
- Do not put into service before full curing
4. Common Issues During Installation
Based on site experience, typical issues include:
- Misalignment of cells affecting cathode handling
- Improper piping positioning leading to uneven flow
- Inadequate joint sealing causing leakage
- Poor pipe fixation resulting in displacement during operation
These issues often become more critical during commissioning and may affect system performance.
5. Conclusion
The installation of electrowinning cells is not just about placing equipment-it requires high precision, attention to detail, and strict process control. Key factors include:
- Installation accuracy of cells
- Uniformity of electrolyte distribution
- Proper sealing and anti-corrosion treatment
These directly impact electrowinning efficiency, product quality, and equipment lifespan.
From the site conditions shown, the overall installation quality is good, with well-organized layout and structure. However, attention to detail-especially sealing and pipe fixation-remains essential to ensure long-term stable operation.
