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A coal ash-iron tailing based porous heat insulation material and a preparation method thereof

A technology of thermal insulation material and fly ash, which is applied in the field of fly ash-iron tailings-based porous thermal insulation material and its preparation, can solve problems such as environmental pollution and land occupation, and achieve convenient construction, high compressive strength, and improved resource utilization. The effect of utilization

Inactive Publication Date: 2011-08-31
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the discharge of solid waste such as fly ash, tailings, low-quality coal powder, and many broken glass and ceramic waste products in the glass and ceramics industry is increasing. Stacking up will not only occupy limited land, but also cause environmental pollution. Pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing a fly ash-iron tailings-based porous insulation material, comprising the steps of:

[0024] 1) According to the mass percentages of each raw material: 30% of powdery solid waste, 40% of binder, 20% of fluxing and toughening agent, 10% of composite foaming agent, select powdery solid waste, binder agent, fluxing toughening agent and composite foaming agent are mixed to obtain solid mixed powder;

[0025] The powdery solid waste is a mixture of iron tailings and fly ash, the mass ratio of iron tailings and fly ash is 2:1, and the particle size of iron tailings and fly ash is less than 0.15mm; Iron tailings are the solid waste left by iron ore enterprises after the process of mining iron, and fly ash is the fine ash collected from the flue gas emitted by thermal power plants;

[0026] The binder is shale, and the particle size of shale is less than 0.15mm;

[0027] The fluxing and toughening agent is a mixture of feldspar and mica, the mass ratio o...

Embodiment 2

[0032] A method for preparing a fly ash-iron tailings-based porous insulation material, comprising the steps of:

[0033] 1) According to the mass percentage of each raw material: 30% of powdery solid waste, 50% of binder, 10% of fluxing and toughening agent, 10% of composite foaming agent, select powdery solid waste, bonding agent agent, fluxing toughening agent and composite foaming agent are mixed to obtain solid mixed powder;

[0034] The powdery solid waste is a mixture of iron tailings and fly ash, the mass ratio of iron tailings and fly ash is 1:1, and the particle diameters of iron tailings and fly ash are both less than 0.15mm; Iron tailings are the solid waste left by iron ore enterprises after the iron extraction process, and fly ash is the fine ash collected from the flue gas emitted by thermal power plants.

[0035] The binder is shale, and the particle size of the shale is less than 0.15mm.

[0036] The fluxing and toughening agent is a mixture of feldspar and ...

Embodiment 3

[0041] A method for preparing a fly ash-iron tailings-based porous insulation material, comprising the steps of:

[0042] 1) According to the mass percentage of each raw material: 40% of powdery solid waste, 40% of binder, 15% of fluxing and toughening agent, 5% of composite foaming agent, select powdery solid waste, binder agent, fluxing toughening agent and composite foaming agent are mixed to obtain solid mixed powder;

[0043]The powdery solid waste is a mixture of iron tailings and fly ash, the mass ratio of iron tailings and fly ash is 1:1, and the particle diameters of iron tailings and fly ash are both less than 0.15mm; Iron tailings are the solid waste left by iron ore enterprises after the iron extraction process, and fly ash is the fine ash collected from the flue gas emitted by thermal power plants.

[0044] The binder is shale, and the particle size of the shale is less than 0.15mm.

[0045] The fluxing and toughening agent is a mixture of feldspar and mica, the...

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Abstract

The invention belongs to the field of novel heat insulation material technology and specifically relates to a coal ash-iron tailing based porous heat insulation material and a preparation method thereof. The preparation method of the coal ash-iron tailing porous heat insulation material is characterized by mixing solid mixed powder and water, granulating and burning, wherein the water, by mass, accounts for 8% to 15% of the solid mixed powder, the solid mixed powder is prepared by mixing a powdery solid waste, a binder, a fluxing flexibilizer and a composite foaming agent, and the solid mixed powder comprises, by mass, 30% to 60% of the powdery solid waste, 30% to 50% of the binder, 5% to 20% of the fluxing flexibilizer and 5% to 10% of the composite foaming agent. The porous heat insulation material is characterized by high compressive strength, heat insulation and lightness and the method not only improves the use ratio of resources, but also reduces the environmental pollution caused by the waste.

Description

technical field [0001] The invention belongs to the technical field of new thermal insulation materials, and in particular relates to a fly ash-iron tailings-based porous thermal insulation material and a preparation method thereof. Background technique [0002] At present, our country is in a period of comprehensive and rapid development. The rapid development of various industries has driven the rapid development of our country's economy, but it has also brought problems such as resource and energy shortages and environmental pollution. Saving resources and protecting the environment have become my country's basic national policy. one. At present, the discharge of solid waste such as fly ash, tailings, low-quality coal powder, and many broken glass and ceramic waste products in the glass and ceramics industry is increasing. Stacking up will not only occupy limited land, but also cause environmental pollution. pollute. Fly ash and tailings are used in a wide range of field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/135C04B33/138
CPCY02P40/60
Inventor 马保国吕阳李相国肖慧蹇守卫宋雪峰袁龙
Owner WUHAN UNIV OF TECH
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