Gypsum Powder Production Line

The gypsum powder production line is an industrial equipment system developed by Liming Heavy Industry for processing natural gypsum (such as natural dihydrate gypsum) and industrial by-product gypsum (such as desulfurized gypsum, phosphogypsum, etc.). Through core processes like crushing, grinding, and calcination, raw materials are processed into construction gypsum powder (hemihydrate gypsum) or anhydrous gypsum powder. It is widely used in building materials (such as gypsum boards, gypsum plaster), chemical synthesis (such as mold gypsum, medical gypsum), soil improvement, and other fields.

Technical Advantage

Process Flow

Use a loader to transport gypsum ore raw materials from the raw material pile to the receiving steel hopper. The large gypsum ore is crushed to the required particle size by the crushing equipment, and the materials that meet the particle size requirements are stored in the raw material bin through the conveying equipment. Small pieces of material are metered and transported to the mill for grinding, where the block shaped material is ground into powder to achieve the required fineness for the process. The powder is transported by the conveying equipment to the finished product silo for storage. Subsequently, the powder is uniformly transported to the gypsum powder calcination equipment through the metering feeding device, where the gypsum powder will complete the conversion from dihydrate gypsum to hemihydrate gypsum. After calcination, it is ground and modified by ball mill, cooled by cooling equipment, and then transported to the finished product silo for storage and aging by conveying equipment.

Industry Applications

Mature gypsum (mainly composed of calcium sulfate hemihydrate) is widely used in the fields of building materials, mold casting, medical education, etc. due to its fast setting and hardening, moderate strength, good thermal insulation, and environmentally friendly and non-toxic properties. Different industries have different performance requirements for it.

Building materials industry

Gypsum product production: used for making paper faced gypsum boards, gypsum blocks, gypsum lines, etc., with lightweight, fire-resistant, soundproof, and thermal insulation functions, widely used for partition walls, ceilings, and decorative shapes in residential and office buildings.
Indoor decoration construction: As a wall plastering material (gypsum putty, leveling gypsum), it has good construction performance, small drying shrinkage, and is not easy to crack, suitable for various wall base leveling. It can also be used for tile pasting and gap filling.
Research and development of new building materials: used for producing gypsum based self leveling mortar, suitable for high-precision leveling of floors. It can also be combined with insulation materials to produce new energy-saving insulation boards.

Mold and Casting Industry

Precision casting mold: After mixing gypsum with water, it has strong fluidity and can accurately replicate complex shapes. It is used for wax mold production of hardware accessories, mechanical parts, jewelry, etc., and subsequently castings metal products through the lost wax method.
Crafts and Toy Molds: Used for making molds for resin, candles, gypsum crafts, as well as prototypes reproduction for toys and sculptures, with convenient demolding and the ability to preserve fine textures.
Ceramic mold: A injection molding mold for some ceramic products (such as daily-use ceramics and art ceramics), which utilizes the water absorption of gypsum to quickly solidify the body and improve production efficiency.

Medical and Cultural Education Industries

Orthopedic fixation materials: Medical grade plaster (high purity, no impurities) is combined with gauze to make a plaster bandage, which is used for fixation after fracture reduction. It has good breathability, fast curing speed, and can fit the shape of the limb.
Manufacturing of cultural and educational supplies: producing chalk, teaching models (such as geographic models, biological specimen molds), as well as processing sculpture blanks and sketch board bases in artistic creation.

Other Applications

In the agricultural field, as a soil amendment, it regulates the pH value of acidic soil, supplements calcium elements in the soil, and promotes crop growth; It can also be used as a culture medium ingredient for edible mushroom cultivation.
Food industry: Food grade gypsum (in line with GB 1892-2007 standard) can be used as a coagulant for the production of bean products such as tofu and dried tofu to rapidly solidify protein.
Industrial fillers: used as fillers for coatings, rubber, plastics, and other products to improve their heat resistance, hardness, and processing performance.

Cases

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