• 05 Aug, 2022
• By EPIC Powder
• 2 Comments

The Application of Jet Mills in Lithium Battery Material-Lithium Iron Phosphate

　　The special jet mill for lithium battery material-lithium iron phosphate is an indispensable type in battery material processing. Its function is to finely process the battery raw materials, break the coarser particles into very fine particles, increase their surface area, and greatly improve the utilization rate of raw materials.

　　As the raw material of lithium battery, the production of lithium iron phosphate without crushing classifieris impossible, which can crush the lithium iron phosphate to a sufficient fineness and classify the fine powders of different fineness, producing lithium-ion battery with high efficiency and quality. The lithium iron phosphateAir Classifying Millproduced by Qingdao EPIC Powder Machinery Co., Ltd.has the following remarkable features and advantages:

　　The crushing range of particle size d50:1-45 microns, which is more suitable for the dispersion and reduction of agglomerations;

　　The crushing process is completed by the collision of materials, which is completely self grinding, so the equipment is wear-resistant and the product purity is high;

　　Key components such as lining and nozzle can be made of alumina, zirconia, silicon carbide and other ceramic materials to ensure zero contact with metal during the whole crushing process and meet the requirements of high-purity materials;

　　It is suitable for dry grinding of various materials with Mohs hardness below 7, especially suitable for crushing materials with high hardness, high purity and high added value.

　　No dead corner, no risk of material storage, easy to realize explosion-proof verification, no potential safety hazards, extremely simple cleaning, and convenient disassembly and replacement of accessories;

　　No transmission parts, self classifying structure, large number of nozzles, high crushing efficiency;

　　The control system adopts program control, which is easy to operate;

　　Explosion proof design can be selected, or nitrogen circulation system can be upgraded to meet the needs of ultra-fine grinding of flammable, explosive and oxidizable materials.

The Working Principle of Lithium Iron Phosphate (LFP) Ultrafine Jet Mill

　　The raw materials to be crushed are brought into the crushing chamber by the compressed gas through the feeding injector, and are sprayed tangentially on the crushing wall under the driving of the high-speed airflow injected by multiple nozzles to achieve the effect of friction crushing. The grinding fineness is controlled by adjusting the longitudinal depth of the grinding chamber, adjusting the grinding pressure or the feeding speed. Compared with the Fluidized Bed Jet Mill, its controllability of the crushing fineness is poor.

Application of Lithium Iron Phosphate (LFP) Material

　　Mainly used in the manufacture of lithium-ion batteries for mobile phones, notebook computers and other portable electronic devices as cathode materials.

　　Lithium-ion battery as cathode material: the advantages of carbon-coated aluminum foil in lithium battery applications:

　　inhibit battery polarization, reduce thermal effect and improve rate performance;

　　2. Reduce the internal resistance of the battery, and significantly reduce the dynamic internal resistance increase in the cycle process;

　　3. Improve consistency and increase battery cycle life;

　　4. Improve the adhesion between the active substanceand the current collector, and reduce the manufacturing cost of the pole piece;

　　5. Protect the current collector from being corroded by the electrolyte;

　　6. Improve the processing performance of lithium iron phosphate and lithium titanate materials.