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2023

The gypsum powder production line is widely used in the field of concrete

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Concrete is a hard substance formed by uniformly mixing cement, sand, stone, and water in a certain proportion, also known as artificial stone or artificial stone. It refers to the engineering composite materials that are composed of aggregates and cemented together by cementitious materials. The commonly used term "concrete" refers to the use of cement as a cementitious material and sand and stone as aggregates; Cement concrete, also known as ordinary concrete, obtained by mixing, forming, and curing with water (with or without additives and admixtures) in a certain proportion, is widely used in civil engineering. Concrete has high compressive strength, but low tensile strength.
Gypsum powder is one of the five major gel materials, which is used as Portland cement retarder in the concrete industry. Adding an appropriate amount of gypsum into clinker (the maximum allowable amount of SO3 is 3.5 in China, and the amount of SO3 added by general cement manufacturers is 2-2.5; the theoretical content of SO3 in CaSO4 · 2H2O is 56.34) can relieve the rapid setting of cement, * * cement strength (especially early strength), reduce the dry shrinkage of cement products in the air by 30-50, and * * cement's frost resistance, chemical resistance and stability.
Gypsum is used as cement ingredient to produce dihydrate gypsum cement, anhydrite cement, ordinary Portland cement, gypsum slag cement, rapid setting gypsum slag cement, gypsum bauxite expansion cement, etc. In foreign countries, especially in Europe, most of the desulfurization gypsum is widely used in the production of building gypsum powder in the building materials industry α- Semihydrate gypsum powder, cement retarder, gypsum products, gypsum mortar and other gypsum building materials products. Liming Heavy Industry Technology is a gypsum production line equipment manufacturer. In its work, the gypsum production line adds raw gypsum and desulfurization gypsum from the feed inlet, effectively contacts the outer wall of the heat exchange tube inside the cylinder, and uses fluidized bed furnace flue gas as the medium to heat and calcine the desulfurization gypsum. The calcined products are collected from the discharge port. The main technology used in this production line is the use of a fluidized bed furnace to provide heat source, which can greatly reduce coal consumption and fully utilize heat. With a daily output of 100-1000 tons, it is an ideal equipment in the current industrial gypsum calcination process, greatly improving production yield and efficiency, and fully meeting the requirements of energy conservation. It is worth recommending.