Desulfurization gypsum powder is produced by limestone/lime-gypsum wet flue gas desulfurization, containing 10-15% free water, the main component is calcium sulfate dihydrate. It is mostly grayish-yellow or grayish-white, mainly due to the high mass fraction of unburned carbon in the soot, and contains a small amount of CaCO3 particles.

Desulfurization gypsum powder, natural gypsum powder, and phosphogypsum powder are the most used gypsum powder raw materials in gypsum powder production lines. They are generally composed of sulfur trioxide, alumina, ferric oxide, calcium oxide, magnesium oxide and potassium oxide. At present, the automation level of gypsum powder production process and production line is not high, most of them are in manual operation or semi-automated level, and the quality of gypsum powder products has long been in a low-level, low-quality state. , the product is usually white, colorless, colorless transparent crystal called trans-gypsum, sometimes due to impurities into gray, light yellow, light brown and other colors. The streaks are white. Transparent. Vitreous luster, cleavage surface pearl luster, fibrous aggregate silk luster.

Use of desulfurization gypsum powder:
The comprehensive utilization of desulfurization gypsum powder is a good thing for the benefit of the country and the people to turn waste into treasure, and it is a project supported and encouraged by the state. At this stage of gypsum production and gypsum building materials in China, the development of gypsum building materials is very fast, and its application pattern is mainly used as cement retarder, gypsum board (including all kinds of wall panels, decorative boards and insulation boards), gypsum blocks and stucco gypsum and other products.

Desulfurization gypsum powder application industry:

1. Building materials decoration, construction engineering industry
(1) Anhydrite concrete and air entrainment: mixed with moderate stimulants can produce anhydrite concrete or air entrainment, can be used soft soil resource base engineering reinforcement, wall brushing, industrial models, tunnel anchor support and the production of synthetic fiber pressure plates.
(2) It is used as a co-solvent and purification agent in the production process of tempered glass.
(3) It is used as a filler in the production of plastics, rubber materials, industrial coatings, asphalt, polypropylene waterproofing and other industrial production.
(4) Concrete concrete expansion agent, anti-cracking agent, self-leveling mortar important raw materials.
(5) Punched pile and deep mixing pile are used as raw materials for large expansion to improve friction resistance.
(6) It is used as a composite alkalinizing agent in the production of special cement

2. Pharmaceutical factory industry
(1) Production of sulfuric acid, attached to the production of light concrete.
(2) Production of ammonium sulfate, with calcium carbonate powder.

3. Agricultural industry
(1) Improve soil stratification, adjust pH, and improve soil stratification such as saline-alkali land and red soil.
(2) Edible fungus is used as calcium, sulfur composite mineral organic fertilizer to regulate the pH of cell culture solution.
(3) It is used as a compound mineral feed additive in poultry and livestock pellet feed.