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Fly ash stilled brick and preparation method thereof

A technology of fly ash and autoclaved bricks, which is applied in the field of high-volume fly ash autoclaved bricks and its preparation, which can solve the problems of energy saving and environmental protection, and the strength and performance of fly ash autoclaved bricks can not meet the requirements, etc. , to achieve the effect of low density, good shrinkage performance and good water absorption

Inactive Publication Date: 2010-03-17
准格尔旗粉煤灰煤矸石研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiency that the existing fly ash autoclaved brick preparation method cannot achieve the effect of energy saving and environmental protection, and the strength performance of the prepared fly ash autoclaved brick cannot meet the requirements, and provides a high-volume powdered coal Ash autoclaved brick and its preparation method

Method used

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  • Fly ash stilled brick and preparation method thereof

Examples

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preparation example Construction

[0024] figure 1 It is a schematic flow chart of the method for preparing fly ash autoclaved bricks of the present invention. Such as figure 1 As shown, the method includes the following steps:

[0025] Step 10, after taking fly ash, lime, gypsum and fine aggregate and grinding respectively, and taking 60% to 65% of fly ash, 10% of fly ash, lime and fine aggregate according to the mass percentage of the total mass ~15% lime, 25%~30% fine aggregate and gypsum accounting for 1%~2% of the total mass of fly ash, lime and fine aggregate are transported to the stirring device for the first stirring.

[0026] The fly ash is dry row fly ash or wet row fly ash. If the particle size of the fly ash is greater than 55 mesh, it is necessary to grind the fly ash to ≤55 mesh. If the particle size is less than or equal to 55 mesh, fine grinding of fly ash is not required. When dry fly ash is used, no treatment is required, and it is directly stored in the silo for use after entering the pl...

Embodiment 1

[0044] First, take fly ash, lime, gypsum and fine aggregate and grind them separately, and take 60% of fly ash, 10% of lime, 30% of the total mass percentage of fly ash, lime and fine aggregate % fine aggregate and gypsum accounting for 1% of the total mass of fly ash, lime and fine aggregate are transported to the twin-shaft mixer for the first mixing; then, the total mass of fly ash, lime, gypsum and fine aggregate 3% activator and 19% water accounting for the total mass of fly ash, lime, gypsum, fine aggregate and activator are added to the uniformly stirred material for the second stirring, wherein the activator is calculated according to its mass percentage Including 10% sodium sulfate, 20% calcium chloride, 10% sodium chloride and 60% carrier material, the carrier material includes 70% fly ash and 30% zeolite powder in terms of its mass percentage; Then, put the evenly stirred material in the digestion bin for 2 hours of digestion; then, the digested material is wheel-mi...

Embodiment 2

[0047] First, take fly ash, lime, gypsum and fine aggregate and grind them separately, and take 65% of fly ash, 10% of lime, 25% of the total mass percentage of fly ash, lime and fine aggregate % fine aggregate and gypsum accounting for 2% of the total mass of fly ash, lime and fine aggregate are transported to the twin-shaft mixer for the first mixing; then, the total mass of fly ash, lime, gypsum and fine aggregate 5% activator and 23% water accounting for the total mass of fly ash, lime, gypsum, fine aggregate and activator are added to the uniformly stirred material for the second stirring, wherein the activator is calculated according to its mass percentage Including 15% sodium sulfate, 30% calcium chloride, 15% sodium chloride and 40% carrier material, the carrier material includes 75% fly ash and 25% zeolite powder in terms of its mass percentage; Then, place the evenly stirred material in the digestion bin for 4 hours of digestion; then, the digested material is subjec...

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Abstract

The invention relates to a preparation method of fly ash stilled bricks, which comprises the following steps: conveying 60% to 65% of fly ash, 10% to 15% of lime, 25% to 30% of fine aggregate in masspercent and 1% to 2% of gypsum in mass percent in the gross mass of the fly ash, the lime and the fine aggregate to a stirring device for first stirring; adding excitant and water to the uniformly stirred materials for second stirring; placing the uniformly stirred materials in a digestion chamber for digestion; rolling the digested materials; pressing and forming the rolled materials through a brick press; palletizing the pressed and formed brick blanks in a still kettle for stilling, maintenance and sintering, and thus obtaining fly ash stilled bricks. The fly ash stilled bricks prepared according to the reasonable matching proportion of the invention have the advantages of energy saving, waste recycling, small density, high strength, favorable water absorption, high temperature resistance, chemical corrosion resistance, good contraction performance, long service life and the like.

Description

technical field [0001] The invention relates to a fly ash autoclaved brick and a preparation method thereof, in particular to a high-volume fly ash autoclaved brick and a preparation method thereof. Background technique [0002] In recent years, large, medium and small cities in my country are in a period of large-scale construction, and the bricks used in large quantities are still traditional solid clay bricks, which consume a lot of land resources and cause the loss of land resources; and my country uses coal-fired power generation The number of manufacturers is increasing day by day, the discharge of fly ash is gradually increasing, and the regional environment is damaged. In order to save energy and protect the environment, as early as 2005, the country began to ban clay sintered bricks, and strongly supported high-volume fly ash instead of clay bricks, which has become an inevitable research direction. [0003] At present, many manufacturers have begun to use fly ash a...

Claims

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Application Information

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IPC IPC(8): E04C1/00B28C7/04B28C1/16B28C1/18B28B3/00C04B28/14
Inventor 张开元
Owner 准格尔旗粉煤灰煤矸石研发中心
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