Experimental Study on Influence of Al2O3, CaO and SiO2 on Preparation of Zinc Ferrite

Gossan ore of sulfide zinc deposit contains abundant zinc, iron, and other metal elements, which is a significant resource with complex components can be utilized. In this study, new technology preparing ferrite from gossan was proposed. The effects Al2O3, CaO, SiO2 in on the formation were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), specific surface area pore size analysis (BET). results show that presence Al2O3 CaO could hinder ferrite, while silica had no effect ferrite. Under conditions molar ratio ZnO Fe2O3 to 1:1:1, an activation time 60 min, roasting temperature 750 °C for 120 products, good crystallinity, smooth particle surface, uniform obtained. addition, compared roasted products area, volume, largest.