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a thermal insulation board

A technology of thermal insulation board and basalt fiber is applied in the field of building materials, which can solve the problems of low strength of thermal insulation board and inability to meet engineering needs, and achieve the effect of low production cost and good mechanical properties.

Active Publication Date: 2016-04-20
邳州市洪福金萱农业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical composition of coal gangue is shown in Table 1. According to the chemical composition of coal gangue, it can be manufactured into insulation boards, but the biggest problem in the process of processing is that the strength of insulation boards is not high, which cannot meet the needs of the project.

Method used

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Embodiment

[0033] In this embodiment, coal gangue is used as the main material, slaked lime is used as the gelling agent, and basalt fiber is added, and the length of the basalt fiber is 5-8 mm. The weight ratio is: 52 parts of coal gangue, 18 parts of slaked lime, 1.5 parts of basalt fiber and 28.5 parts of water.

[0034] The manufacturing steps of this embodiment include the following:

[0035] (1) Ingredients

[0036] The coal gangue is ground with a dry ball mill, and the particle size is controlled to 60-150 mesh. Then add basalt fiber, water and mix.

[0037] (2) stirring

[0038] The slurry stirring time is 5-7min, and the stirring speed is 50-70r / min. The temperature of the slurry is 15-20°C, and the consistency of the slurry is 60mm.

[0039] (3) inflatable

[0040] Use an inflator to inflate, adopt the intermittent inflation method, the first inflation pressure is 0.2-0.3MPa, the inflation time is 2min, after a 1min pause, re-inflate, the second inflation pressure is 0.3...

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Abstract

The invention discloses a heat preservation board. The heat preservation board is characterized by comprising the following raw materials in parts by weight: 52 parts of coal gangue, 18 parts of slaked lime, 1.5 parts of basalt fiber and 28.5 parts of water. The preparation process comprises the following steps: (1) proportioning; (2) stirring; (3) aerating; (4) demolding; (5) cutting; (6) drying a heat preservation board, wherein drying equipment adopts a far infrared heater; the drying mode adopts a method for drying by hot air at ordinary pressure; (7) vacuum pumping; and (8) steeping, wherein steeping liquor adopts acrylonitrile, and the steeping time is 8-10 hours. The heat preservation board has the characteristics of low fabrication cost and good mechanical property.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a method for manufacturing a thermal insulation board. Background technique [0002] Coal gangue is the product of the coal seam deposition process in coal-accumulating basins, and is a combustible ore formed by the combination of coal-forming substances and other substances. In a broad sense, coal gangue is a mixed rock discharged during coal mining and processing, mainly including coal gangue discharged during tunneling, coal gangue discharged from coal preparation, and stripped gangue produced by open-pit coal mining. The comprehensive discharge of coal gangue accounts for 15% to 20% of the raw coal output, and is one of the main industrial solid wastes. However, for a long time, a large amount of coal gangue, which has been stockpiled and is being discharged, has not found a reasonable way to use it, not only occupying a large amount of land, but also seriously polluting th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C04B18/12
CPCY02W30/91
Inventor 朱奎
Owner 邳州市洪福金萱农业发展有限公司