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Fly ash aerated concrete blocks with sinter-dried desulfurization ash and preparation method thereof

A technology of dry desulfurization ash and aerated concrete is applied in the field of comprehensive utilization of solid waste resources, which can solve the problems of unstable performance and high manufacturing cost, and achieve the effects of simple manufacturing process, low production cost, and improved strength after freezing

Inactive Publication Date: 2017-01-11
SHANGHAI MEISHAN IRON & STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fly ash aerated concrete block containing sintered dry desulfurization ash and a preparation method thereof, so as to solve the unstable performance and manufacturing cost of the existing fly ash aerated concrete block containing sintered dry desulfurization ash high technical issues

Method used

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Examples

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Embodiment Construction

[0025] Below in conjunction with Examples 1-5, the present invention will be further described.

[0026] Fly ash aerated concrete block containing sintered dry desulfurization ash, the mass percentage of its raw material components is: 6% to 9% of sintered dry desulfurization ash, 63% to 68% of fly ash, 15% to 20% of quicklime %, cement 8% to 12%, aluminum powder 1% to 2%, the sum of the mass percentages of each raw material component is 100%. The proportioning ratio of raw materials of the embodiment of the present invention is shown in Table 1.

[0027] The preparation method of the above-mentioned fly ash aerated concrete block containing sintered dry desulfurization ash comprises the following steps:

[0028] 1) Weigh sintered dry desulfurization ash, fly ash, quicklime and cement according to the proportion, put them into the mixer and mix them for 10 minutes;

[0029] 2) Add water to the mixture described in step 1) at a water-solid mass ratio of 0.49:1 and stir for 2 ...

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Abstract

The invention relates to fly ash aerated concrete blocks with sinter-dried desulfurization ash and a preparation method thereof. The fly ash aerated concrete blocks with the sinter-dried desulfurization ash solves the technical problems of unstable performance and high manufacturing cost of the existing fly ash aerated concrete blocks with sinter-dried desulfurization ash. The technical scheme of the fly ash aerated concrete blocks with the sinter-dried desulfurization ash is characterized by being composed of the following raw materials in percentage by weight: 6-9% of sinter-dried desulfurization ash, 62-68% of fly ash, 15-20% of un-slaked lime, 8-12% of cement and 1-2% of aluminum powder; and the total percentage of the raw materials is 100%. The fly ash aerated concrete blocks with the sinter-dried desulfurization ash disclosed by the invention is good in compactibility, stable in performance, good in insulation effects, simple in manufacturing processes and low in production cost, and realizes value-added utilization of the sinter-dried desulfurization ash.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste resources, in particular to a fly ash aerated concrete block containing sintered dry desulfurization ash and a preparation method thereof. Background technique [0002] In the iron and steel production process, sulfur dioxide is one of the main pollutants, mainly from the flue gas generated by the sintering process. According to statistics, the sulfur dioxide emitted by the sintering process accounts for more than 60% of the total emission of iron and steel production. At present, the flue gas desulfurization processes commonly used in iron and steel enterprises include wet method, dry method, semi-dry method and ammonia method. Among them, the dry desulfurization process has the advantages of low water consumption, low investment, high desulfurization rate, no waste water, and good coordination with the unit. It has overcome some problems and shortcomings of the wet desulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/10C04B18/30
CPCY02W30/91
Inventor 洪建国王海军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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