ZnO was synthesized by using emulsion-drying method. Emulsion made by mixed solution with sulfantant(span80) and extract catalyst(D₂ EHPA). ZnO precursor was prepared by emulsion breaking method of Zn containing emulsion. We have two types of Zn rich solution one is made from ZnSO₄·7H₂O solution and the other leached solution from wastes(EAF dust). From the results of SEM and particle analyser, synthesized powder was fine, homogenious dixtribution and spherical form.