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Method for producing light high strength sintered brick using city sludge and wet-discharged flyash

A technology for wet discharge of fly ash and urban sludge, which is applied in chemical instruments and methods, applications, household appliances, etc., can solve the problems of large capacity, thermal insulation performance can not meet the building energy saving, etc., to achieve low production cost and benefit The effect of building energy saving and resource saving

Inactive Publication Date: 2010-03-24
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They must be produced in areas with these resources, and although this type of product is very strong, it has a large capacity, and its thermal insulation performance cannot meet the requirements of building energy conservation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: The raw material composition and the weight percent of the lightweight high-strength sintered brick of this embodiment are: municipal sludge (moisture content 75%) 35%, wet discharge fly ash 60%, perlite powder 3%, sawdust 2% %.

[0012] The preparation process of the present embodiment comprises the following steps:

[0013] (1) Mixing of raw materials: Stir and mix urban sludge, wet-discharged fly ash, perlite powder, sawdust, etc. in proportion, and control the moisture content of the mixture at about 18%.

[0014] (2) Forming: Input the mixed materials into the hydraulic brick making machine to form solid bricks.

[0015] (3) Drying: the moisture content of the adobe is reduced to below 6% by natural drying.

[0016] (4) Roasting: Send the dried bricks into the kiln for roasting, the maximum firing temperature is 1100°C, and the maximum temperature holding time is 4 hours, that is, the standard solid brick product is fired.

Embodiment 2

[0017] Embodiment 2: The raw material composition and the weight percent of the lightweight high-strength sintered brick of this embodiment are: municipal sludge (moisture content 75%) 40%, wet discharge fly ash 55%, bentonite 4%, rice husk 1% .

[0018] The preparation process of the present embodiment comprises the following steps:

[0019] (1) Mixing of raw materials: Stir and mix urban sludge, wet-discharged fly ash, bentonite, and rice husks evenly in proportion, and control the moisture content of the mixture at about 18%.

[0020] (2) Forming: Input the mixed material into the hydraulic brick making machine to form porous bricks.

[0021] (3) Drying: the moisture content of the adobe is reduced to below 6% by natural drying.

[0022] (4) Roasting: send the dried bricks into the kiln for firing, the maximum firing temperature is 1080°C, and the maximum temperature holding time is 4 hours, that is, the finished porous brick is fired.

Embodiment 3

[0023] Embodiment 3: The raw material composition and the weight percent of the lightweight high-strength sintered brick of this embodiment are: municipal sludge (moisture content 75%) 30%, wet discharge fly ash 65%, diatomaceous earth 3%, polystyrene Granules 2%.

[0024] The preparation process is the same as in Example 1.

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PUM

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Abstract

The technological process of producing light high strength sintered brick adopts municipal sludge in 30-50 wt% and wet fly ash in 45-65 wt% as the main materials and small amount of fluxing and pore creating agent. The present invention has total use amount of municipal sludge and wet fly ash over 90 wt%, and possesses the features of waste utilization, environment friendship, etc. The produced light high strength sintered brick as one kind of green building material has light weight, high heat insulating performance, etc.

Description

technical field [0001] The invention relates to a method for producing light-weight high-strength thermally fired bricks, in particular to a method for producing light-weight high-strength fired bricks by using urban sludge and wet-discharged fly ash. Background technique [0002] In the past 20 years, due to the consideration of saving land resources and reducing energy consumption, my country has implemented a policy of prohibiting sintering of solid clay bricks, and new wall materials have once developed in the direction of waste residue utilization and non-burning. Therefore, steam-cured fly ash bricks and concrete small Hollow blocks, aerated concrete blocks, lime-sand bricks, etc. came into being. But so far, there is no material that can have a wide range of raw materials for sintered bricks, the least impact on the environment during the production process, long-term durability and dimensional stability, the lowest building cost, and the lowest maintenance cost during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28C7/06B28C1/14B28B3/00C04B18/30C04B18/08C04B38/00
CPCC04B28/02
Inventor 胡明玉彭金生丁成平王信刚
Owner NANCHANG UNIV
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