Preparation method of extrusion-molded zirconia microspheres

The invention discloses a preparation method of extrusion-molded zirconia microspheres. The preparation method comprises the following steps: by taking yttrium oxide stabilized zirconia nano powder YSZ as a raw material, adding a certain proportion of mixed glue, and uniformly mixing by using an internal mixer; cylindrical strips of the material are cut into cylindrical particles through an extrusion molding machine; rolling the cylinder into a ball with good sphericity by using a rolling machine; firing is performed after high-temperature furnace glue discharging; and polishing the sintered zirconium balls in the polishing slurry by using grinding equipment, washing the residual polishing solution with water, and drying to obtain the zirconium oxide microspheres. The invention discloses a process for forming the zirconium oxide microbeads by matching an extruder with a rounding machine for the first time, the density of the prepared zirconium oxide microbeads can reach more than 99.2% of theoretical density,