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Composite lightweight brick made from municipal solid waste incineration ash and preparation method thereof

A technology for municipal solid waste and incineration ash, which is applied in the field of building materials, can solve the problems of poor waterproof and anti-seepage performance, poor application effect, and needs to be improved, and achieves good anti-cracking performance, saving transportation costs, and high cleanliness. Effect

Active Publication Date: 2016-01-06
珠海雄峰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the viscosity and intermolecular bonding force of the bottom ash are not as good as those of clay or cement used in traditional bricks, the waterproof and impermeable performance is poor and it is easy to crack. Especially in the rainy and typhoon South China area, the application effect is not good and needs to be improved.
[0004] Similar problems also appear in the treatment of sedimentary sludge in sewage plants. The sludge deposited in sewage plants can also be used to manufacture building bricks, but it is also necessary to improve its poor waterproof and impervious properties and the defects of easy cracking

Method used

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  • Composite lightweight brick made from municipal solid waste incineration ash and preparation method thereof
  • Composite lightweight brick made from municipal solid waste incineration ash and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The composite lightweight brick made by utilizing the municipal solid waste incineration ash of the present embodiment has the following components by mass percentage:

[0036] Municipal solid waste incineration bottom ash 60%;

[0037] Cement 8%;

[0038] Expanded perlite 7%;

[0039] Additive 5%;

[0040] Filler 20%;

[0041] The composition by mass percentage in the additive is as follows:

[0042] Triethanolamine 1%;

[0043] Sodium chloride 1%;

[0044] Sodium nitrite 1%;

[0045] Polyethylene fiber 2%.

[0046] The filler is composed of sand, lime and fly ash, and the municipal solid waste incineration ash is ash obtained after comprehensive treatment to remove heavy metals and harmful substances.

[0047] In this embodiment, the composite lightweight brick is set as a cuboid or cube structure, and at least one surface is provided with a composite surface layer, a paint layer or a colored layer. The composite surface layer is generally formed by mixing res...

Embodiment 2

[0051] The difference between the present embodiment and the first embodiment is that the proportions of the components are different. Specifically, the composite lightweight brick made of the municipal solid waste incineration ash of the present embodiment has the following components by mass percentage:

[0052] Municipal solid waste incineration bottom ash or dried sewage plant sludge 70%;

[0053] Cement 8%;

[0054] Expanded perlite 7%;

[0055] Additive 3%;

[0056] Filler 12%;

[0057] The composition by mass percentage in the additive is as follows:

[0058] Triethanolamine 0.8%;

[0059] Sodium chloride 0.2%;

[0060] Sodium nitrite 1%;

[0061] Polyethylene fiber 1%.

Embodiment 3

[0063]The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the proportions of each component are different. Specifically, the composite lightweight brick made of municipal solid waste incineration ash in this embodiment has the following components by mass percentage :

[0064] 80% of municipal solid waste incineration bottom ash or dried sewage plant sludge;

[0065] Cement 5%;

[0066] Expanded perlite 5%;

[0067] Additive 4%;

[0068] Filler 6%;

[0069] The composition by mass percentage in the additive is as follows:

[0070] Triethanolamine 1%;

[0071] Sodium chloride 0.5%;

[0072] Sodium nitrite 1%;

[0073] Polyethylene fiber 1.5%.

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Abstract

The invention provides a composite lightweight brick made by utilizing the incineration ash of municipal solid waste and a preparation method thereof. The composition of the composite lightweight brick in terms of mass percentage is as follows: bottom ash of municipal solid waste incineration 60-80%; cement 5-10%; expanded perlite 5-10%; additive 2.1-5%; %; sodium nitrite 0.5-1%; polyethylene fiber 1-2%. The step of preparing municipal solid waste incineration bottom ash in the preparation method of the present invention is completed in a water environment. The composite lightweight brick of the present invention has good anti-cracking effect and anti-seepage effect, and the use of a water circulation system to prepare the municipal solid waste incineration bottom ash can make the preparation of the municipal solid waste incineration bottom ash have a higher cleanliness and save the transportation of raw materials in the preparation process cost, thereby saving energy and reducing production costs.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a composite light-weight brick made of a new formula using the incineration ash of urban domestic waste and a preparation method thereof. Background technique [0002] With the growth of population and the improvement of living standards, the discharge and treatment of municipal solid waste has become a new problem to be solved urgently. At present, the way that most cities in our country take is to incinerate municipal solid waste. Municipal solid waste incineration ash is mainly divided into bottom ash and fly ash according to the different collection locations. Bottom ash generally includes grate slag and ash falling between the grates. Bottom ash accounts for about 80% of the total ash and is mainly composed of slag, metal, ceramic fragments, glass and other non-combustible substances and unburned organic matter. Fly ash refers to the residue collected in the flu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C1/40C04B28/00C04B18/10
CPCY02W30/91
Inventor 程峰
Owner 珠海雄峰环保科技有限公司