Ternary precursor aging method

The invention discloses a method for aging a ternary precursor in a plate-and-frame filter press, wherein the method comprises the steps: a, adding ternary precursor slurry and dilute alkali into the plate-and-frame filter press, and mixing the ternary precursor slurry and the dilute alkali; b, adding hot water into the plate-and-frame filter press, and washing the mixed material in the step a; c, squeezing and side-blowing the material in the step b; and d, carrying out filter pressing treatment on the side-blown material in the step c by the plate-and-frame filter press, and then drying, uniformly mixing and screening to obtain the ternary precursor. According to the invention, the aging manner is performed in the plate-and-frame filter press, so that the contact time of the dilute alkali and the material is long, the dilute alkali use amount can be reduced, and the aging effect is good; and according to the process, the equipment requirement of the aging process is simplified, the process treatment flow is