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High-hardness, washable and mildew-proof interior wall putty powder and preparation method thereof

An interior wall putty powder, water-resistant technology, applied in the field of interior wall putty powder, can solve the problems of destroying the strength of concrete or building materials, poor stability, and slow hydration reaction

Inactive Publication Date: 2019-11-01
芜湖塑荣新型建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Desulfurization ash contains a large amount of calcium sulfite and free chloride ions, which has a slow hydration reaction and cannot harden quickly, causing slow setting in the production of cement or building materials; in addition, it has poor stability and will slowly oxidize when exposed to water or under natural conditions. As a result, the volume expands and destroys the strength of concrete or building materials; under high temperature or acidic conditions, SO 2 Will be re-released, causing secondary pollution
Therefore, lime semi-dry desulfurization ash cannot be directly added to concrete or used to produce building materials such as cement, blocks, and plates, and it cannot be used in other fields; especially, if it is applied to putty powder, water resistance and low strength defect

Method used

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  • High-hardness, washable and mildew-proof interior wall putty powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0033] 1) Desulfurization ash, catalyst (composed of nano-titanium dioxide and nano-zirconia in a weight ratio of 1:0.3) and hydrogen peroxide solution (35% by weight) are subjected to a contact reaction according to a weight ratio of 100:2:400 (reaction temperature is 25 ℃, the reaction time is 10h) to obtain the oxidation product;

[0034] 2) The oxidation product and waste acid solution (pH 2) were subjected to a contact reaction at a weight ratio of 10:40 (reaction temperature was 25°C, reaction time was 8h), and then the filter cake was collected by filtration;

[0035] 3) The filter cake was washed with water for 4 times, followed by aging (the aging temperature was 25° C., and the aging time was 48 hours), and heat treatment (the heat treatment temperature was 450° C., and the heat treatment time was 70 minutes).

preparation example 2

[0037] 1) Desulfurization ash, catalyst (composed of nano-titanium dioxide and nano-zirconia in a weight ratio of 1:0.2) and hydrogen peroxide solution (30% by weight) are subjected to a contact reaction according to a weight ratio of 100:1.5:300 (reaction temperature is 15 ℃, the reaction time is 12h) to obtain the oxidation product;

[0038] 2) The oxidation product and waste acid solution (pH 1) were subjected to a contact reaction at a weight ratio of 10:30 (reaction temperature was 15°C, reaction time was 10 h), and then the filter cake was collected by filtration;

[0039] 3) The filter cake was washed with water three times, followed by aging (the aging temperature was 15° C., and the aging time was 72 hours), and heat treatment (the heat treatment temperature was 400° C., and the heat treatment time was 80 minutes).

preparation example 3

[0041] 1) Desulfurization ash, catalyst (composed of nano-titanium dioxide and nano-zirconia in a weight ratio of 1:0.5) and hydrogen peroxide solution (40% by weight) are subjected to a contact reaction according to a weight ratio of 100:4:500 (reaction temperature is 35 ℃, the reaction time is 8h) to obtain the oxidation product;

[0042] 2) The oxidation product and waste acid solution (pH 3) were subjected to a contact reaction at a weight ratio of 10:50 (reaction temperature was 35°C, reaction time was 5h), and then the filter cake was collected by filtration;

[0043] 3) The filter cake was washed with water for 5 times, followed by aging (the aging temperature was 15° C., and the aging time was 72 hours), and heat treatment (the heat treatment temperature was 400° C., and the heat treatment time was 60 minutes).

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Abstract

The invention discloses high-hardness, washable and mildew-proof interior wall putty powder and a preparation method thereof. The putty powder is composed of putty gelatine powder, treated desulfurized ash, ash calcium powder, white cement and a nano rare earth oxide. The treated desulfurized ash is treated by the following method: 1) carrying out contact reaction on the desulfurized fly ash, a catalyst and a hydrogen peroxide solution to obtain an oxidation product; 2) carrying out contact reaction on the oxidation product and a waste acid solution, and then filtering and collecting a filtercake; and 3) cleaning the filter cake with water, and then carrying out aging and heat treatment, the catalyst being selected from at least one of nano titanium dioxide, nano zirconium oxide, nano yttrium oxide and nano molybdenum oxide. The interior wall putty powder has the characteristics of high hardness, washing resistance and mildew resistance, and the preparation method has the advantage ofsimple operation.

Description

technical field [0001] The invention relates to an interior wall putty powder, in particular to a high-hardness, water-resistant, mildew-resistant interior wall putty powder and a preparation method thereof. Background technique [0002] Desulfurization ash refers to the use of quicklime (CaO) as a desulfurizing agent. The moisture in the desulfurizing agent is evaporated by the sensible heat of the flue gas or the atomized water sprayed into the desulfurization tower. The temperature of the flue gas decreases instantly and the relative humidity increases greatly. The sulfur dioxide in the desulfurization process undergoes a chemical reaction, and then the dry desulfurization by-product is obtained by gas-solid separation in a bag filter. [0003] Desulfurization ash contains a large amount of calcium sulfite and free chloride ions, which has a slow hydration reaction and cannot harden quickly, causing slow setting in the production of cement or building materials; in additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 陈伟兵吴为亚张强陈玉生周权王成新
Owner 芜湖塑荣新型建材科技有限公司