Metering device for production of high-temperature calcined alpha-aluminum oxide

The utility model discloses a metering device for high-temperature calcined alpha-alumina production, which comprises a discharge pipe, one side of the discharge pipe is provided with a fixing assembly, the top inside the discharge pipe is sleeved with a sliding sleeve, the tops of the two sides of the discharge pipe are respectively provided with a first through groove and a second through groove, and the first through groove and the second through groove are communicated with each other. A rotating shaft is arranged in the middle of the two sides of the interior of the sliding sleeve, the rotating shaft is sleeved with a first baffle, a gear is arranged on the side, close to the second through groove, of the sliding sleeve, and a third through groove is formed in the bottom of the side, close to the first through groove, of the discharging pipe. According to the aluminum oxide powder adding device, through mutual cooperation of a first spring, a second baffle, a third through groove and a pull rod, aluminum