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Sintered, energy saving and heat retaining hollow bricks

A hollow brick and sticky technology, applied in the field of building wall materials, can solve the problems of high clay dependence, basic farmland damage, unsatisfactory performance and cost, etc., achieve good self-insulation performance, save land resources, and be beneficial to river channels. cleaning effect

Inactive Publication Date: 2007-02-21
盐城建材机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of making bricks is to use clay to make bricks. Because it requires a large amount of excavation of cultivated land and causes serious damage to basic farmland, the former State Economic and Trade Commission jointly issued a notice with the Ministry of Construction, Ministry of Land and Resources and Ministry of Agriculture, requiring Ban on solid clay bricks until the end of the year
At present, brick-making enterprises have developed new building bricks to replace traditional clay solid bricks, usually by adding fly ash or shale, schist, etc. to clay bricks, but they still rely heavily on clay, and in There are some unsatisfactory places in the performance and cost of bricks

Method used

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  • Sintered, energy saving and heat retaining hollow bricks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The brick of the present invention is formed by mixing viscous silt, fly ash and pore-forming agent, making billets and firing, and the weight mixing ratio of viscous silt, fly ash and pore-forming agent is 70%: 15%: 15% . With the sludge of the cohesive soil of aging treatment in 2 months, the fly ash of the power plant, and the pore-forming agent---be the plant stalk and chaff (straw and rice husk) of 2mm through being pulverized into particle size, mix, add An appropriate amount of water is fully stirred, rolled, and vacuum extruded into a hollow brick 1 (such as figure 1 As shown), the rectangular through-holes 2 on the adobe 1 are longitudinally and orderly arranged, the through-holes 2 in adjacent columns are staggered from each other, and the porosity of the brick is 38%. Sintered at a high temperature of 1000°C to make finished bricks. The strength of the brick body reaches 7.8MPa, and the heat transfer resistance is 0.82m 2 .K / W.

Embodiment 2

[0015] The brick of the present invention is formed by mixing viscous silt, fly ash and pore-forming agent, making a compact and firing, and the weight mixing ratio of viscous silt, fly ash and pore-forming agent is 60%: 30%: 10% . With the sludge of the cohesive soil of aging treatment in 3 months, the fly ash of the power plant, and the pore-forming agent---be the plant stalk and chaff (wheat stalk and wheat husk) of 1mm through being pulverized into particle size, mix, Add appropriate amount of water, fully stir, roll and vacuum extrude to form hollow adobe, the porosity of the brick body is 45%. Sintered at a high temperature of 1050°C to make finished bricks. The strength of the brick body reaches 5.6MPa, and the heat transfer resistance is 0.90m 2 .K / W.

Embodiment 3

[0017] The brick of the present invention is mixed with viscous silt, fly ash and pore-forming agent, made into a compact, and fired. The weight mixing ratio of viscous silt, fly ash and pore-forming agent is 65%: 25%: 10 %. The viscous sludge used has been aged for 4 months; 40% of the fly ash accounting for 25% of the total is replaced by cinder, that is, 15% of the total fly ash and 10% of cinder, the particle size of the cinder after crushing The pore-forming agent is plant (sorghum) stalks crushed to a particle size of 30 μm. The above raw materials are mixed, an appropriate amount of water is added, fully stirred, rolled and vacuum extruded to form a hollow brick with a porosity of 40%. Sintered at a high temperature of 950°C to make finished bricks. The strength of the brick body reaches 6.5MPa, and the heat transfer resistance is 0.86m 2 .K / W.

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Abstract

This invention provides a method for preparing energy-saving and heat-insualting sintered hollow bricks. The raw materials are: sludge 50-70 wt.%, fly ashes 15-40 wt.%, and pore-forming agent 10-15 wt.%. The sludge is aged for 2-4 months. The pore-forming agent is pulverized straw or chaff, or their mixture. The fly ashes can be substituted by pulverized coal residue. The bricks each have several rectangular through-holes, with through-holes in neighboring row stagger from each other, and have a porosity of 30-45%. This invention can recycle sludge and agricultural waste, save oil resources and protect croplands, and has such advantages as wide raw materials and low cost. The bricks can be made into MU 2.5-10 product bricks with different strength grades, and have a heat resistivity higher than 0.7 m2 .K / W, thus have good heat insulation and can be used as wall materials.

Description

Technical field [0001] The invention relates to a building wall material, in particular to a sintered energy-saving and heat-preserving hollow brick. Background technique [0002] With the continuous heating up of infrastructure construction, the demand for building bricks is also increasing. The traditional method of making bricks is to use clay to make bricks. Because it requires a large amount of excavation of cultivated land and causes serious damage to basic farmland, the former State Economic and Trade Commission jointly issued a notice with the Ministry of Construction, Ministry of Land and Resources and Ministry of Agriculture, requiring The use of solid clay bricks is banned until the end of the year. At present, brick-making enterprises have developed new building bricks to replace traditional clay solid bricks, usually by adding fly ash or shale, schist, etc. to clay bricks, but they still rely heavily on clay, and in There are some unsatisfactory parts in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/04
CPCY02P40/60
Inventor 孙国祥
Owner 盐城建材机械有限公司