In the highly competitive non-ferrous metal smelting industry, solution purification and target metal enrichment technologies directly determine the market premium capability of final products. Facing the dual pressures of declining global resource grades and increasingly stringent environmental regulations, traditional gravity settling and packed column technologies are encountering significant bottlenecks. Zhengzhou Tiei Extraction Technology Co., Ltd. is committed to providing the CWL-M series centrifugal extractors, which utilize high-speed rotating centrifugal force fields to offer a new hydrodynamic solution for the efficient separation of copper, nickel, cobalt, zinc, and other metals.

Core Process Flow: Precise Control from Mixing to Separation

In a typical hydrometallurgical solvent extraction process, the CWL-M centrifugal extractor achieves deep purification through the following steps:

1.Two-Phase Feeding and Enhanced Mixing
The aqueous phase containing metal ions (feed solution) and the organic phase containing a specific extractant enter the CWL-M centrifugal extractor's chamber simultaneously according to the preset phase ratio. Driven by the high-speed rotating rotor, the two phases are sheared into tiny droplets, greatly expanding the contact area between the phases. This enables efficient transfer of target metal ions from the aqueous phase to the organic phase, with the mass transfer process completed within seconds.

2.Forced Separation Under a High-Speed Centrifugal Force Field
After entering the rotating drum, the mixed liquid is subjected to centrifugal forces hundreds of times greater than gravity. Due to their different densities, the aqueous phase and organic phase rapidly separate. The heavy phase (aqueous phase) moves toward the outer edge, while the light phase (organic phase) gathers toward the inner edge.

3.Independent Collection and Continuous Discharge
Through the centripetal pump and weir plate structure, the separated two phases are discharged through independent channels, achieving continuous operation with zero back-mixing. The loaded organic phase enters the subsequent washing/stripping process, while the raffinate (lean solution) proceeds to the next treatment stage or compliant discharge.

Core Technical Advantages of CWL-M Centrifugal Extractors in Non-Ferrous Metal Purification

For complex systems involving copper, nickel, cobalt, and other metals, the CWL-M series centrifugal extractors demonstrate superior performance compared with traditional equipment through precise control of rotational speed, temperature, and phase ratio:

1.Exceptional Separation Efficiency and Clarification Performance
Because the centrifugal force field is significantly stronger than the gravitational field, the CWL-M centrifugal extractor can effectively handle difficult-to-separate systems (such as easily emulsified materials or systems with low interfacial tension) that are challenging for traditional mixer-settlers. The entrainment loss of extractants is significantly reduced, which not only saves the cost of expensive organic phases but also decreases the load of subsequent wastewater oil removal processes.

2.High Stage Efficiency and Significant Reduction of Extraction Line Length
The processes of mixing and separation are highly integrated into a single rotating equipment. Improved stage efficiency means fewer extraction stages are required to achieve the same production capacity. The CWL-M centrifugal extractor can significantly reduce equipment footprint, providing substantial value for brownfield plant upgrades and new projects with limited space.

3.Extremely Low Solvent Hold-Up and Rapid Process Response
The internal liquid inventory of the equipment is small, making it particularly suitable for expensive or scarce extraction systems. When production parameters (such as flow rate and pH value) fluctuate, the CWL-M centrifugal extractor can reach a new equilibrium state within a very short time, effectively reducing the generation of off-spec products and ensuring stable final product quality.

4.Fully Enclosed System and Low-Energy Operation
The fully enclosed structural design prevents the release of harmful gases (such as hydrogen sulfide and chlorine-containing volatile substances), improving the working environment for operators. Meanwhile, relying on high-precision mechanical design, the equipment consumes significantly less power than traditional long-shaft stirring systems, demonstrating clear energy-saving advantages throughout its lifecycle.

5.High Automation Level and Operational Flexibility
The equipment is equipped with a variable frequency speed control system, allowing online adjustment of rotational speed according to changes in feed characteristics. Whether processing high-concentration copper leach solutions or low-grade nickel intermediate products, the CWL-M centrifugal extractor can adapt to different operating conditions through simple parameter adjustments, making it an ideal process unit for modern digital mines and intelligent smelting plants.

Application Areas

Copper Solvent Extraction (SX-EW Process): Effectively purifies copper electrolyte solutions, removes impurities such as arsenic, antimony, and bismuth, and stabilizes cathode copper quality.

Nickel-Cobalt Separation: Achieves efficient and deep separation of cobalt from nickel, calcium, and magnesium in complex sulfate or chloride systems.

Precious Metal Recovery: Provides a low-loss enrichment solution for complex systems with low concentrations and high-value metals.

Ternary Precursor Wastewater Treatment: Recovers valuable metals from battery recycling materials, achieving a win-win solution for wastewater compliance and resource reuse.

As the global non-ferrous metal industry moves toward greener, more efficient, and smarter development, the CWL-M centrifugal extractor is not only an upgraded alternative to traditional extraction equipment but also a key process technology for enhancing overall enterprise competitiveness. Relying on solid expertise in fluid dynamics simulation and extensive field application experience, Zhengzhou Tiei Extraction Technology is committed to providing global customers with safe, stable, and efficient integrated solutions for non-ferrous metal solution purification.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820