Method for manufacturing and sintering brick permeable to water with urban sewage sludge and wet-discharged coal ash

A technology for wet discharge of fly ash and urban sludge, applied in the application, household appliances, other household appliances and other directions, can solve the problems of consuming large mineral resources and energy, and the environmental coordination of porous concrete permeable bricks is not as good as that of burning soil products, etc. Achieve good economic benefits, good social and environmental benefits, and simple production processes

Inactive Publication Date: 2008-12-10
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sintered permeable ceramic bricks have good functionality, but consume a lot of mineral resources and energy, while porous concrete permeable bricks are not as environmentally friendly as burnt clay products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. According to raw material composition and weight percentage

[0019] 50% of urban sludge with a water content of 70%, 45% of wet-drained fly ash, 5% of pore-forming agent, and the pore-forming agent is perlite;

[0020] 2. Raw material mixing

[0021] Stir and mix the municipal sludge, wet-drained fly ash and powdery pore-forming agent evenly, and control the moisture content of the mixture at 18%.

[0022] 3. Forming

[0023] Input the mixed materials into the hydraulic brick making machine to form bricks.

[0024] 4. Dry

[0025] Through natural drying, the moisture content of the adobe is reduced to 6%;

[0026] 5. Roasting

[0027] The dried bricks are sent to the kiln for firing, the maximum firing temperature is 1080°C, and the finished product is fired after the maximum temperature holding time is 3 hours.

Embodiment 2

[0029] 1. According to raw material composition and weight percentage

[0030] 45% of urban sludge with a moisture content of 75%, 50% of wet-discharged fly ash, 5% of pore-forming agent, and the pore-forming agent is perlite;

[0031] 2. Raw material mixing

[0032] Stir and mix the municipal sludge, wet-drained fly ash and powdery pore-forming agent evenly, and control the moisture content of the mixture at 16%.

[0033] 3. Forming

[0034] Input the mixed materials into the hydraulic brick making machine to form bricks.

[0035] 4. Dry

[0036] Through natural drying, the moisture content of the adobe is reduced to 5%;

[0037] 5. Roasting

[0038] The dried bricks are sent to the kiln for firing, the maximum firing temperature is 1100°C, and the finished product is fired after the maximum temperature holding time is 4 hours.

Embodiment 3

[0040] 1. According to raw material composition and weight percentage

[0041] 40% of municipal sludge with a moisture content of 80%, 55% of wet-discharged fly ash, 5% of pore-forming agent, and the pore-forming agent is sawdust;

[0042] 2. Raw material mixing

[0043] Stir and mix the municipal sludge, wet-drained fly ash and powdery pore-forming agent evenly, and control the moisture content of the mixture at 15%.

[0044] 3. Forming

[0045] Input the mixed materials into the hydraulic brick making machine to form bricks.

[0046] 4. Dry

[0047] Through natural drying, the moisture content of the adobe is reduced to 6%;

[0048] 5. Roasting

[0049] The dried bricks are sent to the kiln for firing, the maximum firing temperature is 1150°C, and the finished product is fired after the maximum temperature holding time is 3.5 hours.

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PUM

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Abstract

The invention provides a method for producing and sintering a water permeable brick by utilizing municipal sludge and wet fly ash. The method is characterized by comprising the following steps that: 1. the raw materials are mixed; 2. the brick is formed; 3. the brick is dried; and 4. the brick is sintered. The method has the advantages that: 1. resources are saved, the environment is protected, and the social benefit is good; 2. organic matter in the mud and the unburned carbon in the fly ash are taken as internal combustion, the resources are saved; the product has high intensity and good permeability of water; 3. the method has good social and environmental benefits in the aspects such as supplementation of urban groundwater, adjustment of urban climate and purification of air; and 4. the production technology is simple, the production cost is low and the method has good economical benefit.

Description

technical field [0001] The invention relates to a method for producing sintered permeable bricks, in particular to a method for producing sintered permeable bricks by using urban sludge and wet-discharged fly ash. Background technique [0002] The existing impermeable stone pavement, concrete pavement, ordinary ceramic pavement, asphalt pavement and the intercepting surface of various houses and buildings are blocked due to the penetration of rainwater. In addition, due to long-term excessive development and successive years of drought in various cities, urban groundwater resources Declining year by year, resulting in a significant drop in the urban groundwater level. A funnel zone formed by a sharp drop in the groundwater table, causing the ground to fall unevenly. Sintered permeable ceramic bricks have better functionality, but consume a lot of mineral resources and energy, while porous concrete permeable bricks are not as environmentally friendly as burnt clay products. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/135C04B38/06
CPCC04B38/06C04B38/0665C04B38/0675C04B2103/42C04B2111/00017C04B2111/00284
Inventor 胡明玉彭金生丁成平王信刚
Owner NANCHANG UNIV
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