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A method for preparing interior wall putty powder from semi-dry desulfurization ash

A technology for semi-dry desulfurization and interior wall putty powder, which is applied in filling slurry and other directions, can solve the problems of low utilization rate of desulfurized ash, reduce product competitiveness, increase production cost, etc., and achieve good construction performance, low cost, The effect of saving production costs

Active Publication Date: 2018-03-06
西昌市蓝鼎环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above invention patents, the desulfurization ash is dried, calcined or pulverized. The processing procedure is complicated, which increases the production cost and reduces the competitiveness of the product in the market. In addition, a large number of other fillers are used in the patents. The utilization rate of desulfurization ash is not high

Method used

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  • A method for preparing interior wall putty powder from semi-dry desulfurization ash
  • A method for preparing interior wall putty powder from semi-dry desulfurization ash
  • A method for preparing interior wall putty powder from semi-dry desulfurization ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Screen the semi-dry desulfurization ash with a 50-mesh square hole sieve; 80 parts of the semi-dry desulfurization ash, 20 parts of white cement, 2.8 parts of redispersible latex powder, hydroxypropyl methyl Mix 0.3 parts of base cellulose ether and 0.02 parts of starch ether and stir for 10 minutes to prepare interior wall putty powder. The white cement is white Portland cement, grade PW32.5, whiteness ≥ 90, the fineness of the hydroxypropyl methylcellulose ether is 150 μm square hole sieve balance ≤ 1.5%, the The fineness of starch ether is 500μm square hole sieve balance ≤ 5%.

[0025] The interior wall putty powder prepared according to the present invention is formulated into a slurry according to the ratio of putty powder: water = 1:0.5, and tested according to JG / T298-2010 "Putty for Building Interiors", and the results are shown in Table 1.

[0026] Table 1

[0027]

[0028] The results show that the performance of the prepared interior wall putty powder me...

Embodiment 2

[0030] Sieve the semi-dry desulfurization ash with a 200-mesh square hole sieve; 90 parts of semi-dry desulfurization ash, 10 parts of ash calcium powder, 0.8 parts of ethylene / vinyl acetate copolymer, 0.2 parts of polyvinyl alcohol, 0.35 parts of hydroxypropyl methylcellulose ether, and 0.04 parts of starch ether were mixed and stirred for 8 minutes to prepare an interior wall putty powder. The polyvinyl alcohol is polyvinyl alcohol 1788, and the gray Calcium powder fineness is 40 μm square hole sieve balance ≤ 5%, whiteness ≥ 90, said hydroxypropyl methyl cellulose ether fineness is 150 μm square hole sieve balance ≤ 1.5%, said starch Ether fineness is 500μm square hole sieve balance ≤ 5%.

[0031] The interior wall putty powder prepared according to the present invention is formulated into a slurry according to the ratio of putty powder: water = 1:0.5, and tested according to JG / T298-2010 "Putty for Building Interiors", and the results are shown in Table 2.

[0032] Table ...

Embodiment 3

[0036] Sieve the semi-dry desulfurization ash with a 400-mesh square hole sieve; 100 parts of the semi-dry desulfurization ash, 5 parts of redispersible latex powder, 0.1 part of polyvinyl alcohol, hydroxypropyl Mix 0.35 part of methyl cellulose ether and 0.05 part of starch ether and stir for 5 minutes to prepare interior wall putty powder. The polyvinyl alcohol is polyvinyl alcohol 2488.

[0037] The interior wall putty powder prepared according to the present invention is made into a slurry according to the ratio of putty powder: water = 1:0.5, and the test is carried out according to JG / T298-2010 "Putty for Building Interior". The results are shown in Table 3.

[0038] table 3

[0039]

[0040] The results show that the performance of the prepared interior wall putty powder meets the general technical indicators of the standard JG / T298-2010.

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Abstract

The invention discloses a method for preparing interior wall putty powder from semi-dry desulfurization ash. The method is characterized by including steps: screening the semi-dry desulfurization ash through a square-hole sieve; mixing, by weight, 80-100 parts of the semi-dry desulfurization ash, 0-20 parts of white cement or ash calcium powder, 0.8-5 parts of redispersible latex powder, 0-0.2 part of polyvinyl alcohol, 0.3-0.35 part of hydroxypropyl methyl cellulose ether and 0.02-0.05 part of starch ether, and stirring for 5-10min. The semi-dry desulfurization ash can be used as a raw material of the interior wall putty powder only by screening treatment without calcining, drying and grinding, and accordingly procedure simplicity, easiness in operation, low energy consumption and effectiveness in control of production cost are realized. In addition, with a small amount of inorganic cementing material or without the same, the semi-dry desulfurization ash is taken as filler with a small amount of additives to prepare the interior wall putty powder, so that the semi-dry desulfurization ash can be used effectively and substantially to realize recycling of the semi-dry desulfurization ash.

Description

technical field [0001] The invention relates to a method for preparing interior wall putty powder from semi-dry desulfurization ash, which belongs to the field of building material preparation. Background technique [0002] Semi-dry desulfurization ash is solid waste produced by semi-dry flue gas desulfurization systems in power plants and iron and steel plants. Compared with wet desulfurization, semi-dry desulfurization process has low investment, small footprint, less water consumption, and less impact on equipment. The advantages of small corrosion, dry by-products, no waste water and simple process make it gradually become the leading direction of flue gas desulfurization in power plants and steel plants. With the improvement of people's requirements for environmental protection and the planning of national policies, semi-dry desulfurization technology has developed rapidly, and the desulfurization ash produced by semi-dry flue gas desulfurization devices will continue t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 贾二鹏李自树徐创霞贾理蘖黄明忠唐诗富
Owner 西昌市蓝鼎环保科技有限公司
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