The invention discloses a method for producing
gypsum plaster by using desulfurized
gypsum. The method comprises the following steps of: S1, calcining,
grinding, cooling and storing desulfurized
gypsum; S2, taking the cooled desulfurized gypsum, mixing the cooled desulfurized gypsum with an additive and water, and then putting the mixture into a
grinding tool to wait for solidification forming; and S3, after solidification forming, connecting the product with surface protection paper through glue, and carrying out solidification forming and
drying treatment; In the step S1, the calcining temperature is 180 DEG C, and the calcining time is when the content of
crystal water is detected to be 8-10%; In the step S2, the additive comprises 3-8 parts by weight of konjaku flour, 5-10 parts by weight of a water
reducing agent, 1-5 parts by weight of a
foaming agent and 2-6 parts by weight of a
coupling agent, and the weight ratio of the additive to the water to the desulfurized gypsum is 10: 60: 110. In the step S3, the
drying temperature is 220-250 DEG C, and the
drying time is 30 min.