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Lightweight porous heat insulation material and preparation method thereof

A thermal insulation and lightweight technology, applied in the field of lightweight porous thermal insulation materials, lightweight porous thermal insulation materials and their preparation, can solve the problems of environmental pollution, land occupation, etc., and achieve good thermal shock performance , easy construction, small volume density effect

Inactive Publication Date: 2012-07-18
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The long-term accumulation of a large number of tailings not only occupies land, but also causes environmental pollution

Method used

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  • Lightweight porous heat insulation material and preparation method thereof
  • Lightweight porous heat insulation material and preparation method thereof
  • Lightweight porous heat insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix solid wastes such as iron tailings, shale, feldspar, mica, and foaming agent according to the mass ratio of 1:1.3:0.4:0.2:0.03 and stir evenly, add 14% water of the total mass of raw materials to granulate, and age Put it into a SiC refractory mold after obtaining suitable plasticity, and burn it at 1100°C for about 2 hours to obtain a thermal conductivity of 0.127W / m·K, a compressive strength of 9.6MPa, and a density of 1023g / cm3 , the rest of the indicators also meet the requirements of GB13544-2000 and GB6566-2001 lightweight porous thermal insulation materials. Among them, the particle size of the foaming agent is less than 0.075mm, and the particle size of the remaining solid raw materials is less than 0.15mm; the solid waste is composed of iron tailings, coal gangue and old bricks and tiles according to the mass ratio of 25:3:2; the temperature system For: below 400°C, the heating rate is 5°C / min; from 400°C to 900°C, the heating rate is 10°C / min; from 900°C t...

Embodiment 2

[0024] Mix solid wastes such as iron tailings, shale, feldspar, mica, and foaming agent according to the mass ratio of 1:1.1:0.25:0.12:0.025 and stir evenly, add 15% water of the total mass of raw materials to granulate, and obtain After suitable plasticity, put it into a SiC mold, and burn it at 1110°C for about 3 hours, you can get a thermal conductivity of 0.114W / m·K, a compressive strength of 8.3MPa, a density of 942g / cm3, and other indicators It is also a lightweight porous thermal insulation material that meets the requirements of GB13544-2000 and GB6566-2001. Among them, the particle size of the foaming agent is less than 0.075mm, and the particle size of the remaining solid raw materials is less than 0.15mm; the solid waste is composed of iron tailings, coal gangue and old bricks and tiles according to the mass ratio of 14:3:3; the temperature system For: below 400°C, the heating rate is 5°C / min; from 400°C to 900°C, the heating rate is 10°C / min; from 900°C to 1110°C, ...

Embodiment 3

[0026] Mix solid waste such as iron tailings, shale, feldspar, mica, and foaming agent according to the mass ratio of 1:1.2:0.2:0.15:0.03 and stir evenly, add 15% of the total mass of raw materials to granulate, and obtain After suitable plasticity, put it into a SiC mold, and burn it at 1120°C for about 2 hours, you can get a thermal conductivity of 0.099W / m·K, a compressive strength of 7.5MPa, a density of 829g / cm3, and other indicators It is also a lightweight porous thermal insulation material that meets the requirements of GB13544-2000 and GB6566-2001. Wherein, the particle size of foaming agent is less than 0.075mm, and the particle size of other solid raw materials is less than 0.15mm; the solid waste is composed of iron tailings, coal gangue and cullet according to the mass ratio of 16:3:2; the temperature system is : Below 400°C, the heating rate is 5°C / min; from 400°C to 900°C, the heating rate is 10°C / min; from 900°C to 1120°C, the heating rate is 3°C / min, and keep ...

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Abstract

The invention relates to a lightweight porous heat insulation material prepared by iron tailings and other solid wastes and a preparation method thereof. The lightweight porous heat insulation material comprises solid wastes, adhesives, fluxes, a flexibilizer and a foaming agent according to a mass ratio of 1:0.58-1.7:0.18-0.56:0.04-0.24:0.02-0.03, wherein the components are mixed and sintered to obtain the flexibilizer. According to the invention, the volume density of the product as well as the size and distribution of air holes are controlled by the adding quantity of the foaming agent and the temperature regulation; and the lightweight porous heat insulation material provided by the invention has the advantages of utilization of solid wastes, resource conservation, heat insulation property, lightweight, durability, fireproof property, flame retardance, water resistance, corrosion resistance, convenience in construction and the like.

Description

technical field [0001] The lightweight porous thermal insulation material provided by the invention belongs to the field of new wall materials, and specifically relates to a lightweight porous thermal insulation material prepared from iron tailings and other solid wastes and a preparation method thereof. Background technique [0002] At present, my country's economy is developing rapidly, but various resources and energy are becoming increasingly scarce, and air pollution, water pollution, and land pollution are becoming more and more serious. Saving resources and protecting the environment have become urgent issues that we must face. With the improvement of people's living standards, the demand for housing has further increased. The area of ​​newly built houses is as high as 1.7 to 1.8 billion square meters per year, exceeding the sum of the annual construction areas of all developed countries. Compared with developed countries, the level of material consumption is 10% highe...

Claims

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Application Information

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IPC IPC(8): C04B38/02B09B3/00
Inventor 马保国宋雪峰肖慧李相国蹇守卫黄健
Owner WUHAN UNIV OF TECH
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