where 𝑟 and 𝑟 are the radius and 𝜔 and 𝜔 are the rotational speed of the dispersion blade and the planetary revolution speed, respectively. With the maximum edge speed, the maximum shear rate needs to be estimated since a high shear rate can cause polymer chain breakage of the binder . Also, high mixing speed can destroy the formation of favourable slurry-stabilising particle network structure, leading to an unstable slurry . Since the distance, 𝑑 (in meters), between the walls of the mixer to the edge of the dispersion blade is always constant, the approximate maximum shear rate 𝛾̇ (Hz) can be found,