With the explosive growth of the new energy vehicle industry, high-performance lithium battery materials have become the lifeblood of the entire supply chain. Cobalt sulfate, as a core raw material for ternary cathode material precursors, has seen steadily increasing market demand. The selection of a cobalt sulfate extraction system is a critical technical step in the overall production process, determining product purity, recovery rate, and production costs. However, when faced with the choice between centrifugal extractors and mixer settlers, many companies are still navigating a “trial-and-error” phase.

Centrifugal Extraction Process

Centrifugal extraction utilizes the difference in solubility of substances in different solvents to achieve the selective separation of target components. In cobalt sulfate production, by carefully selecting a compatible extractant system, cobalt ions can be efficiently transferred into the organic phase and thoroughly separated from impurity elements. The core advantages of this process include:

Rapid mass transfer, significantly shortening production cycles
Ease of continuous operation and automated control
High separation efficiency, with cobalt recovery rates exceeding 98%
Lower energy consumption, with controllable equipment investment and operating costs

Cobalt Sulfate Centrifugal Extraction Process: Mixing, Separation, and Recovery

The complete cobalt sulfate extraction process using the CWL-M centrifugal extractor consists of three key stages:
Mixing: The cobalt-containing solution and the extractant are brought into full contact according to an optimized ratio, enabling selective transfer of cobalt ions.
Separation: The mixture is divided into a cobalt-loaded organic phase and a cobalt-depleted raffinate phase.
Solvent Recovery: The cobalt-loaded organic phase undergoes stripping and regeneration, allowing the extractant to be recycled and enabling a closed-loop operation.

Mixing and separation operations can be completed within a single piece of equipment. In industrial applications, the mainstream options are centrifugal extractors or mixer settlers, with significant differences in performance that directly impact the overall process economics.

Technological Breakthroughs of the CWL-M Centrifugal Extractor

Zhengzhou Tiei Extraction Technology Co., Ltd. has developed the CWL-M series centrifugal extractor specifically for cobalt sulfate extraction processes. By leveraging the centrifugal force field to restructure the mixing and separation steps, the CWL-M centrifugal extractor achieves multiple performance breakthroughs:

1.70% Reduction in Liquid Hold-Up: Minimal internal holdup within the centrifugal extractor reduces single-stage residence time to the level of seconds, significantly enhancing extraction efficiency and production capacity.
2.Quantum Leap in Separation Efficiency: The high-speed rotation generates centrifugal forces thousands of times greater than gravity, allowing the light and heavy phases to complete thorough separation within milliseconds, eliminating entrainment losses.
3.Fundamental Suppression of Emulsification: Precisely designed fluid channels and mixing structures ensure gentle yet complete phase contact, preventing emulsion layer accumulation caused by intense shear.
4.Substantial Energy Savings: The mixing intensity is precisely controllable, enabling materials to reach mass transfer equilibrium in a very short time. Energy consumption per unit of processed material is reduced by 30%–50% compared to traditional equipment.
5.Significant Processing Capacity: A single CWL-M centrifugal extractor can handle 1–50 m³/h, covering the full range of production scale requirements.
6.Seamless Automation Integration: The centrifugal extractor supports online monitoring and integration with DCS systems. Parameters such as flow rate and rotational speed can be adjusted in real time, enabling unattended operation of the extraction stage.

Zhengzhou Tiei Extraction can provide customers with comprehensive process verification services. Customers can send real materials, and comparative optimization, stage testing, and long-term stability validation are conducted on the CWL-M laboratory-scale centrifugal extractor. A complete process report and equipment selection plan are provided, minimizing decision-making risks.
For feasibility verification of cobalt sulfate extraction processes, pilot-scale validation, or liquid–liquid extraction equipment selection solutions, welcome contact Zhengzhou Tiei Extraction.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820