The invention discloses a lightweight building
gypsum building block and a production method thereof. The lightweight building
gypsum building block is molded by mixing the following raw materials in parts by weight: 75-85 parts of
phosphogypsum, 10-15 parts of
fly ash, 32-45 parts of water, 0.5-1.0 parts of
cellulose, and 8-10 parts of a comprehensive foaming delayed coagulant. Compared with the prior art, the
gypsum solidification time is 8-12 min, the production technology requirement of the gypsum building block can be satisfied, and the smooth operation of the production technology is guaranteed. The aperture of a foaming plasterboard is 0.1-0.18 cm, the
pore distribution is uniform, the enough intensity and breaking-resistant strength of the plasterboard can be guaranteed, and the surface is flat and smooth. Through multiple tests, the
compressive strength of the product is 3.9-4.1 MPa, the flexural intensity is 2.0-2.1 MPa, the
softening coefficient is 0.68, the unit
solid weight is decreased by 20-30%, the heat conduction coefficient is between 0.086W( / m.k) and 0.13W( / m.k), sound insulation and heat insulation performances are obviously increased, through detection, the
compressive strength is increased by 18.3%, and the flexural intensity is increased by 51.2%.