Alumina ceramic crucible and use structure thereof

The utility model discloses an aluminum oxide ceramic crucible and a using structure thereof, the aluminum oxide ceramic crucible comprises an aluminum oxide ceramic crucible, an aluminum oxide ceramic sealing cap, an aluminum silicate ceramic fiber sealing gasket and an aluminum silicate ceramic fiber paper layer, the alumina ceramic crucible comprises a seed crystal cavity, a conical part and a body part which are sequentially connected from bottom to top, the top of the body part is of an open structure, the alumina ceramic sealing cap is in threaded connection with the top of the body part, and the ceramic fiber sealing gasket is arranged between the alumina ceramic sealing cap and the top of the body part; and the aluminum silicate ceramic fiber paper layer is movably laid on the inner side of the aluminum oxide ceramic crucible. When single crystals are grown, the aluminum oxide ceramic crucible is used for replacing a quartz crucible, quartz oxyhydrogen flame welding sealing is not needed, nitrogen doe