The mixing process of slurry plays a pivotal role as a critical link in filling operations. To address the impact of shear forces from mixing equipment on the homogenization of ultrafine tailings slurry, this study optimizes mixing parameters through experimental investigations. Key factors analyzed include impeller type, diameter, and installation height. Homogenization effectiveness was evaluated using spread diameter, average strength, and coeffi-cient of variation. The optimal parameters were determined as an impeller diameter of 7 cm and a bottom clearance of 1 cm, providing theoretical guidance for industrial-scale applications. Through three-factor three-level orthogonal experiments, the most suitable slump and concentration ranges for ultrafine tailings slurry were identified: 25-27 cm and 56 %-58 % for pumping, and 27-29 cm and 50% -54 % for gravity flow. Additionally, slurry concentration showed significant sensitivity to mixing speed, with higher concentrations requiring increased mixing intensity.