| abstract |
The present application specifically discloses a water-resistant magnesium oxysulfide board. The water-resistant magnesium oxysulfide board is formed by curing the modified slurry. The modified slurry includes the following raw materials: each liter of water contains 1.48-2.96 kg of light-burned magnesium oxide powder, 0.57-1.14 kg of magnesium sulfate heptahydrate, and has undergone modification treatment. 0.75-1.12kg of fly ash, 0.001-0.01kg of dispersant, 0.08-0.13kg of chelating resin with nitrogen as coordinating atom, 0.025-0.05kg of water repellent; the content of magnesium oxide in light-burned magnesium oxide is not less than 60wt% , Fly ash is obtained by plasma irradiation of a blend of waste incineration fly ash and zinc oxide. In this application, by pre-processing the waste incineration fly ash to reduce its chloride ion content, and using dispersant, chelating resin and water repellent at the same time, the waste incineration fly ash can be recycled into magnesium oxysulfide board, and the sulfur Magnesium oxide board overcomes the difficulty of absorbing moisture and returning to halogen, and has good water resistance. |