Sealed reaction kettle for aluminum hydroxide production

The utility model belongs to the technical field of reaction kettles, and particularly relates to a sealed reaction kettle for aluminum hydroxide production, which comprises a kettle body, a heating plate arranged outside the kettle body, a shell arranged outside the heating plate, supporting legs arranged at the bottom of the shell, lifting lugs arranged on two sides of the shell, a feeding pipe arranged at the top of the kettle body, and a sealing device arranged at the top of the feeding pipe. A stirring device is arranged in the kettle body, a discharging pipe is arranged at the bottom of the kettle body, and an electromagnetic valve is arranged in the discharging pipe. The sealing device is arranged, the clamping block is in butt joint with the groove, a worker rotates the hand wheel, the threaded rod drives the sealing cover to move downwards, the sealing cover is tightly clamped to the top of the feeding pipe, meanwhile, the sealing gasket enters the inner side of the feeding pipe, the feeding pipe is