Building insulated wall body material and preparation method thereof

A wall material and building insulation technology, applied in the field of building insulation materials, can solve the problems of polluting water, polluting the air, polluting the environment, etc., and achieve the effects of low density, no radioactive pollution, and short cycle

Active Publication Date: 2012-08-15
武汉中理环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of red mud waste piles up like a mountain to occupy the land, pollute the air, pollute the water and pollute the environment
[0004] At present, the comprehensive utilization of phosphogypsum mainly focuses on the preparation of chemical fertilizers, gypsum boards, cement retarders, construction gypsum powder and the production of sulfuric acid co-production cement, but there is no patent for mixing phosphogypsum with red mud as building insulation materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Ingredients:

[0029] The ratio of raw materials is calculated according to the following weight percentages: 34% of phosphogypsum, 16% of red mud, 20% of cement, 15% of fly ash, 7.6% of yellow sand, 7% of lime, and 0.4% of Al powder. Fly ash, cement, yellow sand and lime are mixed, then foaming agent is added; water accounting for 35% of the mixture is added, and ball milled for 2 hours.

[0030] 2. Molding: Injection molding the mixed raw materials to obtain a green body.

[0031] 3. Curing: Put the green body obtained in a curing box for 48 hours at a temperature of 90°C and a pressure of 2 MPa, and then put it in a natural state for 6 days to obtain a building insulation material.

[0032] After testing, the porosity of the building insulation material is 45.3%, in line with JC943-2004; the density is 0.76g / cm 3 , in line with the requirements of JC / T 1062-2007; the compressive strength is 50MP, in line with the requirements of GB / T1965-1996; the thermal cond...

Embodiment 2

[0040] 1. Ingredients:

[0041] The ratio of raw materials is as follows by weight percentage: 30% of phosphogypsum, 20% of red mud, 24% of cement, 10% of fly ash, 9.5% of yellow sand, 6% of lime, and 0.5% of Al powder. Mix coal ash, cement, yellow sand and lime, then add foaming agent; add water accounting for 32% of the mixture, and ball mill for 2.5 hours.

[0042] 2. Molding: Injection molding the mixed raw materials to obtain a green body.

[0043] 3. Curing: Put the green body obtained in a curing box for 36 hours at a temperature of 95°C and a pressure of 2 MPa, and then put it in a natural state for 6 days to obtain a building insulation material.

[0044] After testing, the porosity of the building insulation material is 44.8%, in line with JC943-2004; the density is 0.79g / cm 3 , in line with the requirements of JC / T 1062-2007; the compressive strength is 53MP, in line with the requirements of GB / T1965-1996; the thermal conductivity is 0.17 w / (m k), in line with t...

Embodiment 3

[0046] 1. Ingredients:

[0047]The ratio of raw materials is as follows by weight percentage: 30% of phosphogypsum, 25% of red mud, 20% of cement, 12% of fly ash, 5.4% of yellow sand, 7% of lime, and 0.6% of Al powder. Mix coal ash, cement, yellow sand and lime, then add foaming agent; add water accounting for 38% of the mixture, and ball mill for 2 hours.

[0048] 2. Molding: Injection molding the mixed raw materials to obtain a green body.

[0049] 3. Curing: Put the green body obtained in a curing box for 36 hours at a temperature of 100°C and a pressure of 1.5 MPa, and then put it in a natural state for 7 days to obtain a building insulation material.

[0050] After testing, the porosity of the building insulation material is 47.8%, in line with JC943-2004; the density is 0.73g / cm 3 , in line with the requirements of JC / T 1062-2007, the compressive strength is 52.5MP, in line with the requirements of GB / T1965-1996; the thermal conductivity is 0.20 w / (m k), in line wit...

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Abstract

The invention relates to a building insulated wall body material and a preparation method of the building insulated wall body material. The preparation method comprises the following steps of: (1) mixing ardealite, red mud, fly ash, cement, yellow sand and lime according to the proportion, and adding a foamer so as to obtain a material which is uniformly mixed; (2) adding water in the material after mixing, performing ball milling, and preparing a slurry;(3) pouring the slurry after ball milling in a mould so as to carry out injection molding; and (4) placing a green body in a maintenance box, maintaining under high temperature and high pressure, and then maintaining under a natural state. Compared with the prior art, the building insulated wall body material and the preparation method have the advantages that the industrial residue, the ardealite and the red mud are sufficiently utilized, the pollution of the ardealite and the red mud to the environment can be reduced, and thus the purpose of recycling resources is achieved. The manufacturing of the building heat insulating material has the advantages of short period, low cost, no radioactive contamination, low density and high strength.

Description

technical field [0001] The invention relates to the field of building thermal insulation materials, in particular to a method for preparing building thermal insulation wall materials by using industrial waste phosphogypsum and red mud. Background technique [0002] Phosphogypsum is an industrial by-product discharged during the production of phosphoric acid. The main component of the waste residue produced by wet method preparation of phosphoric acid is dihydrate gypsum, which has similar physical properties to natural gypsum. About 5 tons of phosphogypsum are discharged for every 1 ton of phosphoric acid produced. . At present, the global annual emission of phosphogypsum reaches 280 million tons. With the rapid development of my country's phosphate fertilizer industry, my country's phosphogypsum emission has exceeded 50 million tons, accounting for 18% of the global gypsum emission. Among the emissions of phosphogypsum in my country, 27.7% of phosphogypsum is used to manuf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/00
Inventor 吉晓莉陈卓王浩
Owner 武汉中理环保科技有限公司
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