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Desulfurized ash residue mixed dry mortar

A technology for desulfurization ash and dry-mixed mortar, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem that there is no research report on the production of desulfurization ash and dry-mix mortar, and achieves improved mechanical properties. , the effect of reducing production costs

Active Publication Date: 2012-09-12
南京天印科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are no relevant research reports on the use of desulfurization ash for dry-mixed mortar production

Method used

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  • Desulfurized ash residue mixed dry mortar
  • Desulfurized ash residue mixed dry mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Formula: 125kg of cement, 60kg of desulfurization ash, 780kg of fine aggregate, 25kg of water-retaining thickening material, 0.9kg of polycarboxylate superplasticizer, 0.28kg of sodium lauryl sulfate, and 1.4kg of accelerator.

[0020] The cement used is ordinary Portland cement P·O 42.5, and the water-retaining thickening material is bentonite, first-grade fly ash, hydroxypropyl methylcellulose ether, and redispersible latex powder. The weight of the four The ratio range is 4.5:5.4:0.13:0.07.

[0021] Preparation method: mix the early-strength water-reducing agent, foaming agent, and quick-setting agent to obtain the mixed material; mix the fine aggregate, cement, water-retaining thickening material, and desulfurization ash, and then add the mixed material and mix evenly.

Embodiment 2

[0023] Formula: 130kg of cement, 50kg of desulfurization ash, 790kg of fine aggregate, 25kg of water-retaining thickening material, 0.8kg of naphthalene-based superplasticizer, 0.25kg of polyurethane foaming agent, and 1.4kg of accelerator.

[0024] The cement used is Portland cement P·I 42.5, and the water-retaining thickening material is bentonite, first-grade fly ash, hydroxypropyl methylcellulose ether, and redispersible latex powder. The weight ratio of the four The range is 4.0:5.8:0.1:0.1.

[0025] The preparation method is the same as in Example 1.

Embodiment 3

[0027] Formula: 140kg of cement, 55kg of desulfurization ash, 800kg of fine aggregate, 20kg of water-retaining thickening material, 0.8kg of polycarboxylate superplasticizer, 0.23kg of sodium lauryl sulfate, and 1.3kg of accelerator.

[0028] The cement used is Portland cement P·Ⅱ42.5. The water-retaining thickening material is a mixture of bentonite, primary fly ash, hydroxypropyl methylcellulose ether, and redispersible latex powder, and the weight ratio range of the four is 4.9:5.0:0.15:0.05.

[0029] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to the production field of mixed dry mortar, and discloses a desulfurized ash residue mixed dry mortar which is prepared by the raw materials in parts by weight: 100-280 parts of cement, 50-100 parts of desulfurized ash residue, 650-800 parts of fine aggregate, 10-25 parts of water-retaining thickening material, 0.5-1.0 part of early strength water-reducing agent, 0.2-0.3 part of foaming agent and 1.0-1.5 parts of accelerator. As the desulfurized ash residue is adopted as raw material to produce the mixed dry mortar, the mechanical property of the mixed dry mortar is improved, the production cost of the mixed dry mortar is greatly reduced, a good method is provided for the cyclic utilization of a great deal of industrial residue, and the aim of comprehensive utilization of waste can be achieved; and the desulfurized ash residue mixed dry mortar is environment-friendly, thus being in accordance with the requirement of sustainable development.

Description

technical field [0001] The invention belongs to the field of dry-mixed mortar production, and in particular relates to a dry-mixed mortar with desulfurization ash residue. Background technique [0002] SO from combustion of sulfur-containing fuels 2 Pollution is one of the main problems of air pollution, and different desulfurization technologies are used at home and abroad. The semi-dry desulfurization process has the advantages of low investment, low operating cost and less land occupation. It occupies a considerable proportion in various desulfurization processes in my country. However, with the continuous expansion of flue gas desulfurization scale, it produces more and more desulfurization products, and the comprehensive utilization of desulfurization products is imminent. The inventors found that a large amount of desulfurization ash produced by the semi-dry desulfurization technology of iron and steel enterprises has potential activity or gelation. [0003] Dry-mix...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/30
CPCY02W30/91
Inventor 孙德锋顾云华
Owner 南京天印科技股份有限公司
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