Fireproof boards have a wide range of applications, especially in the construction industry. Magnesium sulfate heptahydrate and anhydrous magnesium sulfate are used as binders in fireproof boards, while medium-alkali or alkali-resistant fiberglass cloth is used as reinforcement to create large-format thin boards. In construction, they are mainly used for ceilings, interior partitions, and other areas requiring fire resistance.
Fireproof boards produced using magnesium sulfate as a raw material possess both the lightweight, flexibility, and reprocessing properties of wood-based organic boards, as well as the fire resistance and water resistance of inorganic boards. They offer numerous advantages, including being environmentally friendly, odorless, non-flammable and smokeless, sound-insulating and heat-insulating, waterproof and fireproof, frost-resistant and rot-resistant, with minimal expansion and contraction without cracking, and non-deformation. Using magnesium sulfate as the base material and medium-alkali fiberglass cloth as reinforcement, with inexpensive sawdust, straw, fly ash, and other materials added as fillers, various fireproof boards and decorative boards are manufactured. These can be used to make fireproof boards, building formwork, ceiling boards, wainscoting boards, partition boards, and other products, exhibiting excellent fireproof and waterproof properties.
Currently, inorganic fireproof boards such as paper-faced gypsum board and calcium silicate board, as raw materials in the construction industry, cannot meet the requirements of engineering construction in terms of strength, water resistance, and secondary processing capabilities. This has further expanded the development space for magnesium sulfate, magnesium sulfate heptahydrate, anhydrous magnesium sulfate, and magnesium sulfate fireproof boards. The development of the fireproof board and insulation board industry has also brought new business opportunities to magnesium sulfate production.
