Aluminum oxide, mixed clinker for production of aluminum oxide and preparation method thereof

The invention particularly relates to aluminum oxide, mixed clinker for production of the aluminum oxide and a preparation method thereof, and belongs to the technical field of aluminum ash recovery, the method comprises the following steps: secondary aluminum ash, industrial sodium carbonate and calcium-containing powder are mixed to obtain an aluminum ash raw material, wherein the calcium-containing powder is lime powder or limestone powder; the aluminum ash raw material is subjected to dry pressing, and raw material balls are obtained; the raw material balls are fed into the kiln tail to be sintered, and mixed clinker is obtained; one-step sintering is adopted, and the process is simple; the energy consumption of aluminum ash dry burdening, molding sintering and clinker sintering is low; after aluminum ash is mixed with sodium carbonate, lime and the like, the fluorine fixing effect is good, and the recovery rate of aluminum oxide and sodium oxide is high. 本发明特别涉及一种氧化铝和其生产用混合熟料及其制备方法，属于铝灰回收技术领域，方法包括：将二次铝灰、