不同球介质斜混工艺改善锰酸锂产品粒度的研究

Improvement of Particle Size of Lithium Manganate by Oblique Mixing Process with Different Spherical Media

摘要: 采用不同球为介质斜混工艺对锰酸锂产品粒度及电性能的影响进行研究。研究结果表明，当采用铝球加聚胺酯球作为介质，料球比为2.5:1斜混工艺对锰酸锂产品粒度改善最佳，此时，样品粒度D10为4.58 um，D50为13.08 um，D90为25.36，D99.99为58.53，振实密度达到2.13 g/cm₃，扣电电性能在3.0 V~4.3 V电压范围和1.0 C倍率下，初始容量为118.67 mAh/g，50次循环容量保持率为92.46%。试验结果对改进锰酸锂斜混工艺、改善锰酸锂产品粒度及性能具有重要的参考作用。

Abstract: The effect of oblique mixing process with different spheres on the particle size and electrical properties of lithium manganate products are analyzed. The results show that when using aluminium balls and polyurethane balls as a medium, the material-to-ball ratio of 2.5:1 oblique mixing process is the best way to improve the particle size of lithium manganate. At this time, the sample size D10 is 4.58 um, D50 is 13.08 um, D90 is 25.36, D99.99 is 58.53, the vibration density is 2.13 g/cm₃, and the electrical performance is 3.0 V - 4.3 V voltage range and 1.0 C multiple. The in-itial capacity is 118.67 mAh/g. 50 secondary circulation capacity retention rate was 92.46%. The test results have an important reference value for improving the slant mixing process of lithium manganate and improving the particle size and properties of lithium manganate products.