Gas-liquid indirect heat exchanging type gypsum normal pressure reaction vessel

The utility model relates to a gas-liquid indirect heat exchanging type gypsum normal pressure reaction vessel which comprises a reaction vessel body and a vessel body upper cover. The reaction vessel is characterized in that an agitating shaft with an agitating blade is arranged in the center of the reaction vessel body; the agitating shaft is connected with a speed reducer and a speed adjustment agitating motor; the speed reducer and the speed adjustment agitating motor are fixed on the vessel body upper cover; a steam pipe network is arranged in the inner cavity of the reaction vessel body, one end thereof is connected with a water steam inlet, and a steam exhaust port is arranged at the other end. The gas-liquid indirect heat exchanging type gypsum normal pressure reaction vessel is used as a special device for producing high-strength alpha type semi-hydrated gypsums by using industrial waste residues-desulfurized gypsums and can provide good reaction temperature conditions for the conversion of slurry, s