A non-fired brick and its production method

Abstract

The invention relates to a formula and a making method for a non-burnt brick, and solves the problems of high treatment cost and no benefit to environmental protection of power plant sintered ash. A small amount of iron powder, calcium oxide and other useful brickmaking substances contained in the power plant sintered ash are utilized to improve the brick strength, so that the made non-burnt brick has the advantages of high strength, high heat resistance temperature, and good durability. The making method includes: taking 30-35 parts by weight of lump power plant sintered ash with a particle size of 5-10mm, 20-25 parts by weight of coal slag powder, 20-25 parts by weight of common sand, 6-8 parts by weight of cement, 3-7 parts by weight of calcium oxide with a particle size of 5-15mm, 3-5 parts by weight of calcium silicate, 1-1.5 parts by weight of sodium sulfate, 0.5-1 part by weight of sodium silicate, 3-5 parts by weight of water-soluble unsaturated resin and 1.5-2 parts by weight of turtle powder, adding 8-15 parts by weight of water to conduct mixing stirring so as to obtain a moist material, and subjecting the moist material to compression moulding by a non-burnt brick molding machine under a pressure of 25MPa.

Description

technical field [0001] The invention relates to an unburned brick, in particular to an unburned brick and a manufacturing method thereof. Background technique [0002] my country is a country that consumes a lot of bricks and is also a big producer of bricks. Ordinary clay bricks are traditional wall materials. They are mainly made of cultivated subsurface clay. They are made of cuboid bricks and then calcined in a brick kiln. This kind of brick is At present, the most commonly used building materials in cities and rural areas, in order to protect the dwindling cultivated land, the country has banned the production of clay bricks. In the past, cement bricks were also tried to replace clay bricks, but the production and use costs of cement bricks are relatively high. There is also the defect that its own quantity is large and it is not suitable for the use of high-rise buildings. In recent years, a kind of non-fired brick has been developed in China. It is mainly formed by mixi...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention proposes a non-burning brick and its production method, thereby solving the problem of high processing cost of sintered ash in power plants and being unfavorable for environmental protection. Useful substances improve the strength, cross-linking and adhesion of bricks, making the unburned bricks have the advantages of high strength, high heat resistance temperature, strong heat insulation, small bulk density, high specific strength and good durability