Pompa Tahan Korosi untuk Pabrik Daur Ulang Baterai Lithium

Ringkasan Proyek

Project Parameter	Detailed Information
Customer Industry	New Energy Materials and Lithium Battery Resource Recycling
Customer Type	A New Energy Materials Technology Company in Anhui, China
Project Stage	Waste Lithium Battery Recycling and Material Purification Process
Project Time	March 2026
Installation Period	12 Days (including pipeline connection and hydraulic pressure testing)
Commissioning Time	5 Days (including heavy-load operation testing and flow/head verification)
Media Proses	Lithium Iron Phosphate (LFP) Leaching Slurry, Hydrogen Peroxide (H₂O₂), Sodium Hydroxide (NaOH), Sodium Carbonate (Na₂CO₃) Solution
Pump Models	Corrosion Resistant Pump UHB-Z Series, CYF Series, and CYH Series Chemical Centrifugal Pumps
Core Requirements	Solve corrosion caused by oxidizing leaching solutions, wear caused by high-solid slurry, and frequent mechanical seal leakage
Installation Location	Anhui, China
Hasil Aplikasi	The combination of UHB, CYF and CYH pumps covered the complete transfer requirements from highly corrosive chemicals to high-solid slurry, reducing downtime and supporting 24/7 continuous production.

Latar Belakang Proyek

The customer is a new energy materials technology company based in Anhui Province, China, primarily engaged in recycling waste lithium batteries and purifying new energy materials.

During the lithium battery recycling process, the production line involves various challenging media, including highly corrosive hydrogen peroxide, sodium hydroxide, sodium carbonate solution, and highly abrasive lithium iron phosphate (LFP) slurry. Due to these harsh operating conditions, the original pumping equipment frequently experienced corrosion leakage, blockage, and wear problems, resulting in a high production line downtime rate and increased maintenance costs.

For this lithium battery recycling application, the customer required a reliable corrosion-resistant pump solution to handle corrosive chemicals and abrasive slurry during the material purification process.

After technical analysis, Changyu Pump summarized the main problems as follows:

• Strong Corrosion and Oxidation: During the acid leaching process, strong oxidizing agents such as hydrogen peroxide (H₂O₂) and acidic solutions are used. Conventional metal pumps are easily affected by severe pitting corrosion and oxidation damage under these operating conditions.
• Strong Alkalinity and High Crystallization Tendency: During the precipitation process, sodium hydroxide (NaOH) and sodium carbonate (Na₂CO₃) solutions may form crystals when the operating temperature changes. These crystals can increase mechanical seal wear and affect pump stability.
• High Abrasive Slurry: The recovered lithium iron phosphate (LFP) slurry contains high-hardness micron-sized solid particles. The impellers and wetted parts of ordinary chemical pumps can suffer rapid wear and erosion during operation.

Before this project, the customer used conventional stainless-steel and acid-resistant pumps. After less than two months of operation, problems such as shaft seal leakage, impeller wear, and serious flow reduction occurred frequently. The production line had to stop frequently for maintenance, affecting overall production efficiency. Based on the customer’s complex operating conditions, Changyu Pump provided a customized pumping solution using a combination of UHB, CYF, and CYH Corrosion Resistant Pump models. This solution successfully solved the transfer requirements throughout the lithium battery recycling and purification process, including corrosive chemical transfer and high-solid-content slurry transfer.

The project was completed in March 2026. After installation and commissioning, the pumping system achieved continuous and stable operation.

Changyu’s Solution

The customer’s waste lithium battery recycling production line involves multiple process stages with highly corrosive chemicals and high-wear slurry. A single pump type cannot simultaneously meet the requirements of corrosion resistance, wear resistance, and stable transfer performance. Changyu Pump’s technical team analyzed the chemical properties, temperature, solid content, and flow requirements of each medium and developed a “dedicated pump selection” solution for different process sections.

By selecting different pump types according to different operating conditions, Changyu provided a complete corrosion resistant pump solution for lithium battery recycling plants, ensuring that each transfer process used the most suitable pump.

Product Configuration

Transfer Process	Transfer Medium	Karakteristik Sedang	Model Pompa yang Direkomendasikan	Core Materials / Features
Leaching / Acid Dissolution	Hydrogen peroxide, sodium hydroxide, sulfuric acid	Strong oxidation, strong corrosion	Seri UHB	Uses UHMWPE lining material, providing excellent corrosion resistance and impact resistance. Especially suitable for strong acid and strong alkaline liquid transfer with low solid content.
Impurity Removal / Precipitation	Sodium carbonate solution, lithium-containing solution	Mildly alkaline, easy crystallization	CYF Series	Fluoroplastic-lined chemical centrifugal pump with corrosion resistance and high-temperature resistance. The smooth wetted surface helps reduce scaling and blockage, suitable for chemical solution transfer containing small amounts of solids.
Slurry Transfer	Lithium iron phosphate slurry	High abrasion, high solid content	Seri CYH	Stainless steel construction with high strength and wear resistance. Combined with large flow channel design, it effectively prevents slurry blockage and ensures stable slurry transfer.

Why We Recommended These Three Pumps

1. UHB Series (for highly corrosive liquids)

During the initial stages of used lithium-ion battery purification, large amounts of hydrogen peroxide and caustic soda are used for leaching reactions. UHB pumps employ an integrated sintering process to firmly bond a UHMWPE lining to the outer metal casing, resulting in corrosion resistance far superior to that of ordinary metal pumps. They can perfectly withstand the erosion of strongly oxidizing media, and the lining is unlikely to peel off, ensuring a long service life.

For product specifications and details, please visit the following product page: https://changyupump.com/product/uhb-type-uhmwpe-corrosion-resistant-pump/

2. CYF Series (for crystallizing/corrosive liquids)

In the subsequent impurity removal and precipitation stages, sodium carbonate solutions are prone to crystallization when exposed to temperature fluctuations. The CYF pump’s fluoroplastic lining features an extremely low coefficient of friction and excellent non-stick properties, effectively preventing crystals from adhering to the pump’s inner walls, ensuring stable flow rates, and reducing the frequency of shutdowns for cleaning.

For product specifications and details, please visit the following product page: https://changyupump.com/product/acid-transfer-chemical-centrifugal-pump/

3. CYH Series (for highly abrasive slurries)

Lithium iron phosphate slurries feature high particle hardness and high concentration, causing extremely rapid wear on the pump’s flow-passing components. CYH pumps are constructed from high-strength stainless steel and feature an optimized impeller hydraulic model, enabling them to withstand continuous erosion from high-solids-content slurries. This significantly extends the pump’s service life and reduces spare parts replacement costs.

For product specifications and details, please visit the following product page: https://changyupump.com/product/stainless-steel-centrifugal-chemical-pump/

Before and After Comparison

Dimensi Perbandingan	Before (Previous Solution)	Pompa Tahan Korosi
Equipment Failure Rate	Average downtime 4-6 times per month, mainly caused by corrosion leakage and impeller wear	Continuous operation for 3 months without unplanned shutdown, with significantly improved equipment reliability
Biaya Pemeliharaan	Seal components and impellers needed to be replaced frequently every month, resulting in high spare parts costs	Only regular maintenance is required, reducing maintenance costs by approximately 70%
Transfer Efficiency	Crystallization blockage caused unstable flow and affected downstream processes	Stable flow performance, meeting process design requirements without blockage issues
Product Quality	Unstable pumping performance caused uneven particle size distribution and a lower product qualification rate	More uniform particle size distribution, with the qualification rate increased to over 98%
Energy Consumption Performance	Old pumps had low efficiency and high energy consumption	New high-efficiency pump system reduced overall energy consumption by approximately 15%

On-Site Operational Performance

Hasil Proyek

By introducing Changyu Pump’s “UHB + CYF + CYH” Corrosion Resistant Pump combined solution, the customer achieved an overall upgrade of the waste lithium battery purification production line.

The project results include:

• Improved Production Stability: The solution solved unexpected production line shutdown problems caused by pumping equipment and achieved stable 24-hour continuous operation.
• Improved Purification Quality: The stable output performance of CYF and UHB pumps improved acid-alkali neutralization and precipitation processes inside the reaction tanks. The purified lithium iron phosphate (LFP) precursor material achieved a more uniform particle size distribution, directly improving the qualification rate of battery-grade materials.
• Cost Optimization: The project significantly reduced equipment maintenance requirements and spare parts replacement costs. At the same time, the improved pump efficiency reduced energy consumption, shortening the investment return period to within 6 months.

Kesimpulan

Under the harsh operating conditions of waste lithium battery recycling, including highly corrosive chemicals and high-wear slurry, Changyu Pump provided more than a single pump product. Instead, Changyu provided a precise pump selection solution based on the characteristics of each process medium. The combination of UHB, CYF, and CYH pump models successfully covered the complete transfer requirements from strong acids and strong alkaline solutions to high-solid-content slurry.

This corrosion resistant pump solution for lithium battery recycling plants provides reliable support for continuous production in the new energy material recycling industry.

If you are facing similar challenges in transferring corrosive liquids, abrasive materials, or high-solid-content media, please feel free to contact Pompa Changyu.

Changyu Pump provides complete technical support from pump selection to installation, helping customers achieve reliable and stable operation in demanding industrial applications.