mobile gypsum recycling equipment

Project Background

Gypsum is a monoclinic system with high degree of cleavage and easy to split into thin slices. The gypsum is heated by heating the gypsum to

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Main use of gypsum

Gypsum is a monoclinic system with high degree of cleavage and easy to split into thin slices. The gypsum is heated by heating the gypsum to 100 to 200 ° C and losing part of the crystal water to obtain hemihydrate gypsum. The α-type hemihydrate gypsum crystallizes well and is solid; the β-type hemihydrate gypsum is a plate-like and cracked crystal with fine crystals and a much larger specific surface area than α-type hemihydrate gypsum. When producing gypsum products, α-type hemihydrate gypsum requires less water than β-type, and the product has higher density and strength. Usually, it is made by steaming autoclave in saturated steam medium, which is α-type hemihydrate gypsum, also called high-strength gypsum. It is made of β-type hemihydrate gypsum by using a wok or rotary kiln open device. plaster. The slurry of semi-hydrated gypsum and water is re-formed into dihydrate gypsum, which is rapidly solidified during the drying process to obtain strength, but softens when exposed to water. Gypsum is the main raw material for the production of gypsum cementitious materials and gypsum construction products, and also a retarder for Portland cement. After the gypsum is calcined at 600-800 ° C, a small amount of lime and other catalysts are added to grind together to obtain an anhydrite cement (also known as Jin's cement); after calcination at 900-1000 ° C and grinding, high-temperature calcined gypsum can be obtained. . The products made of these two kinds of gypsum have higher strength than the construction gypsum products, and the anhydrite cement has better heat insulation, and the high temperature calcined gypsum has better wear resistance and water resistance.

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