The invention provides a desulfurized
gypsum plaster board with
high magnesium ion content and a preparation method thereof. The
gypsum plaster board is prepared from the following raw materials in parts by
mass: 100 parts of desulfurized
gypsum clinker; 60 to 75 parts of water; 0.5 to 10 parts of
zeolite; 0.05 to 0.2 part of glass fibers; 0.2 to 1 part of
retarder; and 0.2 to 1 part of
starch. The preparation method comprises the following steps of: pretreating the
zeolite and activating the
zeolite; mixing the desulfurized gypsum clinker,
glass fiber and treated zeolite to obtain a mixture;weighing the water,
retarder and
starch to prepare a
mixed solution; uniformly mixing the mixture and the
mixed solution to prepare gypsum
slurry; and molding the gypsum
slurry, performing solidifying,
drying, laminating, edge sawing, edge sealing and packaging to obtain the gypsum plaster board. With the gypsum plaster board adopted, the technical problems that a gypsum plaster board prepared bytaking high-
magnesium desulfurized gypsum clinker as a
raw material is poor in
dehydration property and cohesiveness can be solved, and under severe test conditions, the board core and surface protection paper of the gypsum plaster board are not stripped, so that the bonding effect of the gypsum plaster board is good.