Lead Silver Anode Plates for Zinc Electrowinning
Reliability, consistent product quality, and smooth production are the three key factors that zinc electrowinning plants prioritize. Our lead silver anode plate manufacturing process is mature, and our workers have extensive production experience, ensuring long-term quality stability.
Introduction to Lead Silver Anode Plate
Stable and reliable. Consistent quality ensures smooth production.
Details of Anode Plate and On-site Photos
Data of Performance
| Alloy Composition of Plate Surface | Pb-Ag-Ca Alloy with Aluminum |
| Effective Plate Area | 2 ~ 3.6 Square Meters |
| Application for | Zinc EW |
| Service Life under Normal Conditions | 1 Year If the Silver Content Is Less than 0.5%; 1.5 ~ 3 Years If the Silver Content Is More than 0.5%. |
Actual data from customer factories:
1. It is made of multi-element lead alloy (containing rare earth elements)
2. The plate surface is flat, and the alloy composition is evenly distributed.
3. Hot rolling at first and then cold rolling
4. Embossing was added as a surface treatment process (surface area enhancement treatment), which enhances the corrosion resistance of the anode plates while reducing the lead content in the cathode zinc.
5. Holes are on the plate which makes that the electrolyte has good fluidity.
6. Various methods of welding copper beams and plates are used – acetylene oxygen or stir-friction welding (depends on the weight of the lead silver blade).
The Proven Performer for Zinc Electrowinning: Excellent Reliability and Scalable Supply
In the critical process of zinc electrowinning, where consistency is the cornerstone of profitability, you need an anode backed by decades of proven performance. The Lead Silver (Pb-Ag) anode is not merely a component; it is the industry’s time-tested workhorse. Our Pb-Ag anode plates embody this legacy, refined through our vast manufacturing experience to deliver unwavering reliability, batch-after-batch consistency, and the scalable supply required to support the world’s largest operations.
Precision Manufacturing: A Legacy of Quality and Control
Our manufacturing process is built on a foundation of deep metallurgical understanding, ensuring every anode meets the exacting standards required for efficient zinc production.
1. Alloy Precision:
We begin with high-purity lead (Pb) and introduce a precise percentage of silver (Ag), typically between 0.5% – 1.0%. This silver addition is critical, as it enhances the anode’s mechanical strength, promotes the formation of a highly conductive and protective lead dioxide (PbO₂) layer, and significantly improves corrosion resistance in the acidic sulfate electrolyte.
2. Advanced Casting, Repeated Rolling and Precision Calibration for High-quality Lead Alloy Plate (Blade):
2.1 Advanced Casting for Superior Integrity:
2.2 Repeated Rolling and Precision Calibration:
2.3 Patented Increased Surface Area Treatment:
Our patented surface area enhancement treatment can more than double the specific surface area of the anode plate. Under the same current intensity, the current density on the surface of this improved anode plate is only half that of the traditional anode plate. Therefore, it can significantly reduce the electrochemical corrosion and oxidation rate of the anode plate, improve its service life, and enhance the product quality of the cathode copper. For areas with frequent power outages, to prevent the oxide film on the anode plate surface from peeling off and causing excessive lead content in the cathode zinc, we perform a surface area enhancement treatment on the anode plate. This treatment improves the adhesion of lead dioxide to the anode plate, reduces corrosion of the lead silver anode plate, and extends its service life.
3. Metallurgically Bonded Lead Cladding Copper Conductive Beam:
3.1 Cleaning and Preheating the Copper Rods
Remove grease and oxides from the copper rod, and then preheat the copper busbar to above 200°C.
3.2 Casting Process for Achieving Metallurgical Bonding
Hot lead casting of the copper rod achieves a metallurgical bond between the copper rod and the lead cladding, preventing the lead and copper from separating. This prevents bulging during use and ensures low lead-copper transition resistance, effectively guaranteeing the conductivity, mechanical strength, and hardness of the conductive beam.
3.3 A Firm Weld Between the Conductive Beam and The Lead Alloy Plate
We apply a trapezoidal bayonet seamless welding technique to bond the lead alloy plate and the conductive beam, achieving a complete metallurgical bond at the weld. Using patented technology, three trapezoidal bayonets are fabricated on the alloy plate surface, and then three trapezoidal clamps are fabricated on the conductive beam transition plate. After the lead alloy plate and the conductive beam transition plate are inlaid, automatic acetylene seamless welding is performed.
4. Uncompromising Quality Assurance:
Our commitment to reliability is enforced through rigorous inspection protocols. We verify chemical composition, dimensional accuracy, weight, and surface integrity for every anode. This ensures that when you install our anodes, you are guaranteed predictable, consistent performance.
The Enduring Advantages of the Lead Silver Anode
In an era of new technologies, the Pb-Ag anode remains the default choice for zinc producers worldwide for powerful, practical reasons.
1. Time-Tested Reliability:
This is a mature, fully-optimized technology. The electrochemical behavior of Pb-Ag alloys in zinc sulfate electrolytes is thoroughly understood and predictable. You are not investing in an experiment but deploying a proven solution known for its robust performance, long operational life, and minimal operational risk.
2. Guaranteed Supply from Mass Production:
We have honed our production to an industrial scale, capable of fulfilling the most significant orders for greenfield projects or plant expansions without delay. Our massive production capacity and streamlined logistics guarantee that your operation will have the anodes it needs, when it needs them.
3. Optimized for Zinc Production:
Decades of focused production for the zinc industry have allowed us to perfect our product. Our anodes deliver:
Stable Operation: The consistent Ag content ensures the formation of a durable and highly conductive PbO₂ coating, leading to stable cell voltage and efficient oxygen evolution throughout the anode’s life. - Rich Experience in Large Size Plate: We have extensive experience in mass-producing large-sized lead silver anode plates with 3.6㎡ for both sides, which ensures both high efficiency and stable quality.
Superior Corrosion Resistance: The homogeneous alloy structure provides excellent resistance to the sulfuric acid electrolyte, maximizing service life and protecting your investment. Proven Performance: The industry’s long-standing success with Pb-Ag anodes is a testament to their effectiveness in producing high-quality cathode zinc efficiently.
Technical Specifications:
Base Material: High-Purity Lead (Pb) Alloying Element: Silver (Ag), with standard content of 0.5% – 1.0% (customizable) Dimensions: Fully customizable to all standard and proprietary cell designs. Application: Primarily for Zinc Electrowinning.
More Than Just a Supplier of Anode and Cathode Plates
PRS has a rich experienced engineering and technique team. We can provide EPC services including full process consulting, solution optimization, equipment integration / supply in system and on-site commissioning or remote guiding.
Process Consulting
Our seasoned sales and engineers teams will communicate with you. We are just consultant of your whole EW process, according to your requirements and local conditions.
Drawings Optimization
The senior engineers from PRS can discuss the drawings with you, and provide reasonable suggests to optimize your drawings in maximum according to their rich experience.
System Supply
PRS is able to supply system equipment to you with a full range of crushing – ball milling – flotation – leaching – extraction – electrowinning, including certificates required.
On-site Commissioning
On-site commissioning, guidance and installation are available if in need, and remote guidance service by engineers or technique experts from PRS is also open for you.
Choose the Anode That Built the Zinc Industry
When your goal is maximum uptime and predictable results, the logical choice is the anode with a proven track record. Partner with a supplier that has the production expertise and scale to be your reliable long-term partner.
