Building phosphogypsum powder thermal insulation material and preparation method thereof

A technology of building gypsum powder and thermal insulation materials, applied in the field of building thermal insulation materials, can solve the problems of not using gypsum and low comprehensive utilization rate of phosphogypsum, and achieve the effects of overcoming easy combustion and aging, increasing thermal insulation effect, and saving energy

Active Publication Date: 2012-04-18
LUXI CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the comprehensive utilization rate of phosphogypsum in my country is not high, and there is no technology to use gypsum to produce building insulation materials.

Method used

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  • Building phosphogypsum powder thermal insulation material and preparation method thereof
  • Building phosphogypsum powder thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A kind of external wall insulation board produced with phosphogypsum, cement, fly ash, etc. as main raw materials, is characterized in that its used raw materials and formula are (calculated by weight percentage)

[0027] (1) Construction gypsum powder 50%

[0028] (2) Cement 10%

[0029] (3) Fly ash 8%

[0030] (4) Hydrogen peroxide (concentration 20%) 2%,

[0031] (5) Water 30%

Embodiment 2

[0032] Embodiment 2: A kind of external wall insulation board produced with phosphogypsum, cement, fly ash, etc. as main raw materials, is characterized in that its used raw materials and formula are (calculated by weight percentage)

[0033] (1) Construction gypsum powder 45%

[0034] (2) Cement 12%

[0035] (3) Fly ash 11%

[0036] (4) Hydrogen peroxide (concentration 20%) 2%,

[0037] (5) Water 30%

Embodiment 3

[0038] Embodiment 3: A kind of external wall insulation board produced with phosphogypsum, cement, fly ash, etc. as main raw materials, is characterized in that its used raw materials and formula are (calculated by weight percentage)

[0039] (1) Construction gypsum powder 40%

[0040] (2) Cement 15%

[0041] (3) Fly ash 13%

[0042] (4) Hydrogen peroxide (concentration 20%) 2%,

[0043] (5) Water 30%

[0044] The performance indicators of the insulation board produced by the above three ratios are as follows:

[0045] Bulk density (kg / m 3 )

[0046] It can be seen from the above table that the thermal conductivity and strength of the external wall insulation material made of building phosphogypsum powder meet the external wall insulation standards, and have obvious advantages in fire protection. The above comparison shows that the phosphogypsum exterior wall insulation material has the advantages of heat preservation and heat insulation.

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Abstract

The invention discloses a building phosphogypsum powder thermal insulation material and a preparation method thereof. The thermal insulation material comprises the following ingredients: 40-50 wt% of building gypsum powder, 10-15 wt% of cement, 8-13 wt% of fly ash, 1-2 wt% of foaming agent, and 30-40 wt% of water. The preparation method comprises the following steps: (1) putting building gypsum powder, cement, fly ash and other solid raw materials in a mixer for dry mixing, putting a mixture of water and foaming agent in the mixer, and stirring to form an uniform slurry; (2) injecting the prepared gypsum foamed slurry in a mould; and (3) demoulding and carrying out maintenance to obtain a finished product. The thermal insulation material has the following advantages: (1) low unit weight, low thermal conductivity, thermal insulation, and energy saving property; (2) functions of fire resistance, sound resistance, and air humidity adjustment; and (3) reduction of storage quantity of industrial waste residues.

Description

technical field [0001] The invention belongs to the field of building thermal insulation materials, and in particular relates to a building phosphogypsum powder thermal insulation material and a preparation method thereof. Background technique [0002] The annual emission of phosphogypsum in my country is nearly 40 million tons. For a long time, due to the lack of appropriate standards to regulate the production of enterprises, most of the phosphogypsum has been discharged by enterprises as waste residue. A large number of phosphogypsum waste piles are distributed around the phosphate fertilizer enterprises, occupying a large amount of land and increasing the company's slag costs, and because phosphogypsum contains harmful substances such as phosphorus pentoxide, fluorine and free acids, long-term accumulation will also cause Cause surface water and groundwater pollution. Therefore, it is imminent to realize large-scale comprehensive utilization of phosphogypsum and eradic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14
Inventor 姜吉涛孙海兵焦延涛张文
Owner LUXI CHEM GRP
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