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Semi-dry desulfurization ash-based enhanced-temperature-adjusted-flame-retardant interior wall putty powder and preparation method thereof

A semi-dry method of desulfurization and interior wall putty powder technology, applied in the direction of filling slurry, etc., can solve the problems of poor cleaning and safety, low added value, cracking of building materials, etc., and achieve the effect of promoting enterprise efficiency

Active Publication Date: 2020-09-25
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that calcium sulfite is not stable in semi-dry desulfurization, and it is easy to oxidize to calcium sulfate when used in building materials, resulting in cracking of building materials; semi-dry desulfurization, red mud and stainless steel slag are difficult to use; putty powder for interior walls The production consumes a lot of resources and energy, and the problem of formaldehyde release is poor in environmental protection; using calcination or strong oxidizing agents to treat dry and semi-dry desulfurization ash by oxidizing calcium sulfite to calcium sulfate to prepare interior wall putty powder, which has cleanliness and safety The problem of poor quality; and the single function of interior wall putty powder, which leads to the problem of weak market competitiveness and low added value

Method used

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  • Semi-dry desulfurization ash-based enhanced-temperature-adjusted-flame-retardant interior wall putty powder and preparation method thereof
  • Semi-dry desulfurization ash-based enhanced-temperature-adjusted-flame-retardant interior wall putty powder and preparation method thereof
  • Semi-dry desulfurization ash-based enhanced-temperature-adjusted-flame-retardant interior wall putty powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0030]

[0031] The chemical composition (mass percentage) of the semi-dry desulfurization ash is CaO (59.2%), SO 3 (32.1%), Cl (3.2%), Fe 2 o 3 (1.8%), K 2 O (1.3%), Na 2 O (0.6%), SiO 2 (0.5%), MgO (0.4%), Al 2 o 3 (0.3%), others (0.6%), the fineness is 400 mesh.

[0032] The white cement is white Portland cement with a grade of P·W 32.5.

[0033] The red mud composite powder is a mixture of Bayer red mud and sintering red mud, the mass ratio of Bayer red mud to sintering red mud is 3:1, and its chemical composition (mass percentage) is SiO 2 (20.5%), Al 2 o 3 (17.6%), CaO (36.4%), Fe 2 o 3 (8.9%), MgO (1.5%), Na 2 O (6.8%), others (8.3%), the fineness is 500 mesh.

[0034] The fineness of the talc powder is 400 mesh; the minimum film-forming temperature of the latex powder is 0°C-5°C.

[0035] In the hydroxypropyl meth...

Embodiment 2

[0041] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0042]

[0043] The chemical composition (mass percentage) of the semi-dry desulfurization ash is CaO (59.2%), SO 3 (32.1%), Cl (3.2%), Fe 2 o 3 (1.8%), K 2 O (1.3%), Na 2 O (0.6%), SiO 2 (0.5%), MgO (0.4%), Al 2 o 3 (0.3%), others (0.6%), the fineness is 400 mesh.

[0044] The white cement is white Portland cement with a grade of P·W 32.5.

[0045] The red mud composite powder is a mixture of Bayer red mud and sintering red mud, the mass ratio of Bayer red mud to sintering red mud is 1:3, and its chemical composition (mass percentage) is SiO 2 (19.2%), Al 2 o 3 (16.9%), CaO (32.7%), Fe 2 o 3 (9.3%), MgO (1.7%), Na 2 O (10.3%), others (9.9%), the fineness is 500 mesh.

[0046] The fineness of the talc powder is 400 mesh; the minimum film-forming temperature of the latex powder is 0°C-5°C.

[0047] In the hydroxypropyl met...

Embodiment 3

[0053] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0054]

[0055] The chemical composition (mass percentage) of the semi-dry desulfurization ash is CaO (59.2%), SO 3 (32.1%), Cl (3.2%), Fe 2 o 3 (1.8%), K 2 O (1.3%), Na 2 O (0.6%), SiO 2 (0.5%), MgO (0.4%), Al 2 o 3 (0.3%), others (0.6%), the fineness is 400 mesh.

[0056] The white cement is white Portland cement with a grade of P·W 32.5.

[0057] The red mud composite powder is a mixture of Bayer process red mud and sintering process red mud, the mass ratio of Bayer process red mud to sintering process red mud is 1:1, and its chemical composition (mass percentage) is SiO 2 (18.8%), Al 2 o 3 (20.1%), CaO (27.7%), Fe 2 o 3 (12.3%), MgO (1.4%), Na 2 O (9.5%), others (10.2%), the fineness is 500 mesh.

[0058] The fineness of the talc powder is 400 mesh; the minimum film-forming temperature of the latex powder is 0°C-5°C. ...

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Abstract

The invention provides semi-dry desulfurization ash-based enhanced-temperature-adjusted-flame-retardant interior wall putty powder and a preparation method thereof, and belongs to the field of utilization of metallurgical refractory solid waste resources. The interior wall putty powder comprises semi-dry desulfurized fly ash, white cement, red mud composite powder, talcum powder, latex powder, a hydroxypropyl methyl cellulose-carboxymethyl cellulose mixture, bentonite-stainless steel slag mixed powder and reinforcing-temperature adjusting functional fibers. The white cement is white portland cement, and the grade of the white cement is P.W 32.5. The lowest film forming temperature of the latex powder is 0-5 DEG C. The viscosity of the hydroxypropyl methyl cellulose-carboxymethyl cellulosemixing agent ranges from 100000 cps to 200000 cps, and the viscosity of the hydroxypropyl methyl cellulose-carboxymethyl cellulose mixing agent ranges from 100000 cps to 200000 cps. The length-diameter ratio of the fiber with the enhancing-temperature adjusting function is 50-150. According to the invention, the integration of enhancement, temperature adjustment and flame retardance of the interior wall putty powder is realized, the high-performance and high-added-value resource utilization of the refractory semi-dry desulfurized ash, red mud and stainless steel slag is realized, the enterprise efficiency is promoted, and the current industrial development requirements of energy conservation, environmental protection and circular economy are met.

Description

technical field [0001] The invention belongs to the field of utilization of metallurgical refractory solid waste resources, and in particular relates to a semi-dry desulfurization ash-based reinforcement-temperature-regulating-flame-retardant interior wall putty powder and its preparation, which can be used in the field of building materials. Background technique [0002] Semi-dry desulfurization ash is the product of flue gas desulfurization process, and its chemical composition is CaO, SO 3 , Cl, Fe 2 o 3 , K 2 O, Na 2 O, SiO 2 , MgO, Al 2 o 3 etc., where CaO and SO 3 The content is high, mainly unstable calcium sulfite, which is different from the calcium sulfate contained in wet desulfurization ash (desulfurization gypsum); red mud is the waste residue produced in the alumina production process, and its chemical composition is SiO 2 、Al 2 o 3 , CaO, Fe 2 o 3 , MgO, Na 2 O, etc., also contains caustic soda components and trace non-ferrous metals, etc., and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 张浩龙红明吴胜华杜晓燕宗志芳昂靖刘铭昊刘秀玉
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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