Gypsum In China's modern industry, 93% of annual production is used as a cement retarder. The addition of gypsum to the cement can make the setting time reasonable, avoid the phenomenon of rapid setting, increase the strength and frost resistance, and reduce the shrinkage rate, but the amount of the mixture generally does not exceed 3.5%. The construction products such as plates and wall members made of gypsum have become a fast-developing one with light weight, shock resistance, sound insulation, heat insulation, flame retardant, good decorative performance, convenient and mechanized production, and improved construction speed. Demand for new building materials is growing. Gypsum is used as building cementing material for building mortar and insulating concrete, making roofing, tiles and ceilings. Gypsum is used as a filler in the paper, paint, rubber, chemical, plastic, and textile industries. Sulfur-deficient areas can be used to make sulfuric acid, but it is not economical. The use of gypsum for calcium and sulphur nutrients in agriculture can increase crop yields. In addition, gypsum is widely used in medicine, food, production models and art. Smartphone Bag For Bike,Handlebar Smart Phone Bag,Bicycle Smartphone Bag,Smartphone Bicycle Dry Bag Ningbo Deying Reflective Products Co.,Ltd , https://www.deyingsafe.com
Building materials industry As a cement setting agent and composite mineralizer, it is especially suitable for the production of concrete expansion agent, low alkalinity special cement, anhydrite cementing material and its products.
The chemical industry can produce cement in parallel with sulfuric acid for the production of rubber, plastics and coatings.
Agricultural application: It can improve soil and adjust pH; as a feed additive, it can supplement sulfur and calcium nutrients.
Different uses have different requirements on the type and content of gypsum. The classification and use of gypsum are shown in the following table. Different uses have different restrictions on impurities in gypsum ore, such as K, Na, Cl content of gypsum board; content of As, S, Se, Cr, F, Cl, MgCl 2 by medical and food gypsum; , medical and food have restrictions on the content of radioactive elements in gypsum, which can be determined in specific indicators. 