Customized Dry Magnetic Separator Used In NMC Battery Cathode Materials

The dry magnetic separator used in NMC Battery cathode materials has increased the separation efficiency of iron impurities by 20%

The separation principle of cathode materials for ternary lithium batteries by dry powder magnetic separators
The cathode materials of ternary lithium batteries are usually composed of metal oxides such as nickel cobalt manganese (NCM) or nickel cobalt aluminum (NCA). During the production process, some magnetic impurities may be mixed in, such as metal particles like iron and cobalt or their oxides. These magnetic impurities have a certain degree of magnetism, while the cathode materials of ternary lithium batteries themselves are generally weakly magnetic or non-magnetic substances.

The JC dry powder magnetic separator is mainly composed of the magnetic system, drum, feeding device and discharging device, etc. When the dry powder of the cathode material of ternary lithium batteries containing magnetic impurities enters the magnetic field area of the magnetic separator, due to the effect of the magnetic field, the magnetic impurities will be attracted by the magnetic force and move towards the area with a higher magnetic field intensity. Non-magnetic or weakly magnetic cathode materials for ternary lithium batteries are not significantly affected by the magnetic field and continue to move along their original trajectories. In this way, magnetic impurities are separated from the cathode material of ternary lithium batteries. For instance, in the production of lithium batteries with ternary lithium materials and other positive electrodes, dry magnetic separators can effectively remove impurities such as iron filings and iron powder that are mixed in during raw material processing and mixing.

Why is a dry powder magnetic separator used for the purification of cathode materials in ternary lithium batteries
The cathode materials of ternary lithium batteries are usually in the form of dry powder. The dry powder magnetic separator is specially designed for dry powder materials and can directly process dry powder cathode materials without additional pretreatment or conversion processes, simplifying the process flow and improving production efficiency.

After a certain ternary Lithium (NMC Lithium) cathode material manufacturer in China applied JC's dry magnetic separator, while ensuring that the purity of the output after separation reached 99.99%, the separation capacity was increased by 20%, helping the user achieve a 190% increase in output value from 2020 to 2023.

Improvement and Benifit

Ensure the purity of the product: The dry magnetic separator can precisely control the magnetic field intensity and material flow rate. According to the characteristics of different lithium battery cathode materials and impurity content, it can flexibly adjust the circuit and magnetic field parameters to achieve efficient removal of magnetic impurities and ensure the purity of the product.

More reliable mechanical structure: Dry separation equipment faces challenges of vibration and sealing in practical applications. JC ensures sealing by improving the pipeline structure and eliminates pipeline leakage. Moreover, JC adopts exclusive customized shock absorption and buffering components, fundamentally reducing the vibration of the dry magnetic separator and increasing the trouble-free operation time of the equipment.