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Coal ash poly-light brick

A fly ash, light technology, applied in the field of fly ash poly light weight bricks, to achieve the effect of low thermal conductivity, good thermal shock stability and uniform structure

Inactive Publication Date: 2013-10-23
SHUOZHOU SHUOXIANG CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned products, and provides a fly ash polycarbonate lightweight brick, which solves the main raw materials required for making polycarbonate lightweight bricks, and uses fly ash instead of bauxite to make polycarbonate lightweight bricks. The problem

Method used

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  • Coal ash poly-light brick

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Embodiment Construction

[0011] A fly ash poly light weight brick, the raw material formula ratio is: fly ash 55%, clay 35%, coal gangue powder 7.5%, polystyrene 1.5%, sawdust 1%.

[0012] The manufacturing process of a kind of fly ash poly light weight brick is as follows:

[0013] (1) Weigh 55% of fly ash, 35% of clay, 7.5% of coal gangue powder, 1.5% of polystyrene, and 1% of sawdust after screening according to the proportion of raw material formula; (2) fully mix the above-mentioned weighed materials Stir to be a mud block; (3) put the above mud block into a mud mixer and extrude and grow into a rectangular hexahedron shaped product with a width of 115 mm and a height of 240 mm; (4) press the green body Send to the chain drying kiln for drying, the temperature is 120°C, so that the moisture content of the green body is 1.8%; (5) Send the dried green body into the tunnel kiln, and calcine at a high temperature of 1300°C for 40 minutes , the waste heat after calcination is used for drying the gree...

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Abstract

The invention discloses a coal ash poly-light brick. The coal ash poly-light brick is manufactured from the following raw materials in percentage: 50%-60% of coal ash, 30%-40% of clay, 7%-8% of gangue powder, 1%-2% of polystyrene and 0.5%-1.5% of saw dust. A manufacturing process of the coal ash poly-light brick comprises the following steps of: (1) weighing coal ash, clay, gangue powder, polystyrene and saw dust by the proportion of the raw materials; (2) fully mixing and stirring the weighed materials to form clods; (3) putting the clods into a pugmill to mould the clods by extrusion; (4) delivering the rolled blank body to a chain type drying kiln and drying at 100-150 DEG C so that the water content of the blank body is lower than 2%-6%; (5) delivering the dried blank body to a tunnel kiln, calcining the blank body at a high temperature of 1200-1300 DEG C for 38-42 minutes, and drying the blank body by the afterheat generated after calcining; and (6) cutting and grinding the calcined blank body to form a finished product. The coal ash poly-light brick disclosed by the invention is energy-saving and environment-friendly and has a low heat conduction coefficient and good thermal shock stability.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a lightweight fly ash aggregate brick. Background technique [0002] Fly ash is one of the largest industrial wastes in my country, and it is the main solid waste discharged from coal-fired power plants. With the development of the electric power industry, the discharge of fly ash from coal-fired power plants has increased year by year, polluting the atmosphere; the toxic chemicals in it can also cause harm to human body and organisms. The resource reuse of fly ash has become the most effective way to deal with industrial waste residue. The main oxide composition of fly ash is: SiO2, Al2O3, FeO, Fe2O3, CaO, etc. At present, poly light weight bricks are made by calcining bauxite and clay. The main component of bauxite is alumina, which is hydrated alumina containing impurities. It is a non-renewable resource, and many of them need to be imported. Grinding is also required for u...

Claims

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Application Information

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IPC IPC(8): C04B33/135C04B38/06
CPCY02P40/60
Inventor 黎元晚
Owner SHUOZHOU SHUOXIANG CERAMICS
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