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Composite heat-insulation board and preparation method thereof

A technology of composite thermal insulation and thermal insulation layer, which is applied in the direction of clay products, other household utensils, household utensils, etc., can solve the problems of increasing production costs, and achieve the effect of increasing added value, good fire resistance and thermal insulation performance, and high strength

Active Publication Date: 2016-01-27
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of raw materials in this process, which must be strictly operated to obtain products with good performance, which greatly increases the production cost

Method used

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  • Composite heat-insulation board and preparation method thereof
  • Composite heat-insulation board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Preparation of composite insulation board by one-time sintering of fly ash

[0041] Put 30 parts of fly ash, 20 parts of clay, and 50 parts of quartz into a mixer and stir for 10 hours, then dry in a dryer at 85°C for 10 hours, and then put them into a granulator for granulation. The granular material is formed by high pressure under the pressure of 35MPa to make a solid composite insulation board substrate. Put 30 parts of fly ash, 50 parts of discarded glass, 15 parts of clay, and 5 parts of feldspar into a mixer for 10 hours, then dried in a dryer at 85°C for 10 hours, and then put into a granulator for granulation. Put the granular material into the mold and press it for a second time under the pressure of 35MPa to make a composite insulation board blank, which is calcined at 1400 °C for 3 hours in a kiln to obtain a composite insulation board. The surface insulation layer is then ground and polished, and flattened. , and finally obtain the finished compo...

Embodiment 2

[0042] Example 2 Preparation of composite insulation board by one-time sintering of fly ash

[0043] Put 50 parts of fly ash, 15 parts of clay, and 35 parts of quartz into a mixer for 10 hours, then dry in a dryer at 85°C for 10 hours, and then put them into a granulator for granulation. The granular material is formed by high pressure under the pressure of 45MPa to make a solid composite insulation board substrate. Put 40 parts of fly ash, 40 parts of discarded glass, 15 parts of clay, and 5 parts of feldspar into a mixer for 10 hours, then dried at 85°C for 10 hours in a dryer, and then put into a granulator for granulation. Put the granular material into the mold and press it for a second time under the pressure of 45MPa to make a composite insulation board blank, which is calcined at 1300 °C for 3 hours in a kiln to obtain a composite insulation board. The surface insulation layer is then ground and polished, and then flattened. , and finally obtain the finished composite...

Embodiment 3

[0044] Example 3 Preparation of composite insulation board by one-time sintering of fly ash

[0045]Put 80 parts of fly ash, 10 parts of clay, and 10 parts of quartz into a mixer and stir for 10 hours, then dry in a dryer at 85°C for 10 hours, and then put them into a granulator for granulation. The granular material is high pressure molded under 55MPa pressure to make a solid composite insulation board matrix. Put 50 parts of fly ash, 40 parts of waste glass, 5 parts of clay, and 5 parts of feldspar into a mixer and stir for 10 hours, then dry in a dryer at 85°C for 10 hours, and then put them into a granulator for granulation. The granular material is put into the mold and pressurized twice under the pressure of 55MPa to make a composite insulation board body, which is calcined in a kiln at 1200°C for 3 hours to obtain a composite insulation board, and the surface insulation layer is then ground and polished to be flattened. , and finally get the finished composite insulati...

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Abstract

The invention provides a novel composite heat-insulation board and its preparation method. Solid waste fly ash which is used as a main raw material undergoes one-time sintering to obtain the composite heat-insulation board. By the method for preparation of the composite heat-insulation board, the present situation of low comprehensive utilization rate of fly ash and environmental pollution is solved; and as a matrix layer and a heat-insulation layer both adopt the solid waste fly ash, costs of the composite heat-insulation board are greatly reduced, and added value of fly ash product utilization is raised. After one-step sintering, the matrix layer and the heat-insulation layer are greatly combined, and no binding material is needed. Thus, the matrix and the heat-insulation layer are sintered at a time to be integrated. According to the invention, resource utilization of garbage materials is realized, and field resources for fly ash landfill are minimized. The composite heat-insulation board meets requirements of energy conservation, waste utilization and environmental protection. In addition, the prepared composite heat-insulation board has high strength, good fireproof and heat-insulation properties, is resistant to water and insect pest, is conducive to popularization and application in practice and is of great economic, social and eco-environment protection significance.

Description

technical field [0001] The invention relates to the field of comprehensive utilization of industrial solid waste, in particular to a new method for preparing a composite insulation board by one-time sintering with fly ash as the main raw material. Background technique [0002] Fly ash is a kind of pozzolan-like mixed material formed by high-temperature combustion of pulverized coal. With the sustained and rapid growth of China's economy, the use of coal has also increased year by year. The power industry is a major coal user, accounting for more than half of the country's total coal consumption. [0003] Fly ash is an inevitable product of thermal power generation, and the output of fly ash increases with the increase of thermal power generation installed capacity. It is generally believed that the comprehensive recycling rate of China's fly ash can reach more than 60%, but according to the survey report on China's fly ash in 2010, the actual situation is that China's curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B41/85
CPCY02P40/60
Inventor 王习东王昊王绍鑫刘丽丽
Owner PEKING UNIV
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