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A kind of preparation method of non-clinker-free burning-free environmental protection bricks mixed with sludge incineration ash

A sludge incineration, clinker-free technology, applied in cement production, sustainable waste treatment, solid waste management, etc., can solve problems such as the ineffective utilization of sludge incineration ash, the small amount of cement produced, and the impact on product performance. , to achieve the effect of good promotion and application prospects, fast turnover of brick-making process, and rapid increase in strength

Active Publication Date: 2022-07-05
SHANGHAI MUNICIPAL ENG DESIGN INST GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the above three disposal methods, landfill treatment requires the construction of a landfill, and the sludge incineration ash has not been effectively utilized; high-temperature melting consumes a lot of heat, and requires special equipment and professionals; Adverse effects such as affecting product performance

Method used

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  • A kind of preparation method of non-clinker-free burning-free environmental protection bricks mixed with sludge incineration ash
  • A kind of preparation method of non-clinker-free burning-free environmental protection bricks mixed with sludge incineration ash
  • A kind of preparation method of non-clinker-free burning-free environmental protection bricks mixed with sludge incineration ash

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preparation example Construction

[0035] A method for preparing a clinker-free burning-free environment-friendly brick by adding sludge incineration ash according to the present invention is prepared by adopting the following raw materials by weight:

[0036] Activated sludge incineration ash: 100 parts;

[0037] Sand: 80 to 120 parts;

[0038] Crushed stone: 50 to 80 parts;

[0039] Saturated lime water: 95-140 parts;

[0040] The preparation method of non-clinker-free burning-free environmental protection bricks mixed with sludge incineration ash comprises the following steps:

[0041] (1) material mixing: the above-mentioned raw materials are weighed according to the formula and poured into a stirring pot for full mixing to obtain a uniform mixture;

[0042] (2) Compression molding: add the mixture obtained in step (1) into a mold, complete compression molding under a pressure of 3 to 7 MPa, and then stand for 8 to 12 hours under standard curing conditions after demoulding;

[0043] (3) Microwave curing...

Embodiment 1

[0066] A non-clinker-free burning environment-friendly brick mixed with sludge incineration ash is prepared by adopting the following process:

[0067] (1) 100 parts of activated sludge incineration ash (S1), 80 parts of natural sand with a fineness modulus of 2.5, 50 parts of natural graded crushed stone with a particle size of 5 to 10 mm and 95 parts of saturated lime water were added to the stirring pot and mixed Homogeneous, saturated lime water is saturated Ca(OH) 2 solution;

[0068] (2) adding the mixture obtained in step (1) into a mold, molding under a pressure of 3 MPa, and standing for curing for 8 hours at a temperature of 20±2° C. and a relative humidity greater than 95% after demoulding;

[0069] (3) placing the sample that has been left standing for curing in step (2) in a microwave environment, the microwave frequency is 2400-2500MHz, and the microwave curing system is: 100W curing for 5min, stopping for 3min, and reciprocating like this for 3 times; 2) 150W c...

Embodiment 2

[0072] A non-clinker-free burning environment-friendly brick mixed with sludge incineration ash is prepared by adopting the following process:

[0073] (1) Add 100 parts of activated sludge incineration ash (S1), 96 parts of machine-made sand with a fineness modulus of 2.7, 67 parts of natural graded crushed stone with a particle size of 5-10 mm and 122 parts of saturated lime water into a stirring pot and mix Homogeneous, saturated lime water is saturated Ca(OH) 2 solution;

[0074] (2) adding the mixture obtained in step (1) into a mold, molding under a pressure of 4.5 MPa, and curing for 9 hours at a temperature of 20±2° C. and a relative humidity greater than 95% after demoulding;

[0075] (3) placing the sample that has been left standing for curing in step (2) in a microwave environment, the microwave frequency is 2400-2500MHz, and the microwave curing system is: 100W curing for 5min, stopping for 3min, and reciprocating like this for 3 times; 2) 150W curing for 3min, ...

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Abstract

The invention discloses a method for preparing a clinker-free burning-free environmental protection brick mixed with sludge incineration ash. 140 parts were mixed evenly, the mixture was poured into the mold, and the bricks were made by pressure molding method. After demoulding and curing, microwave curing method was used to quickly improve the strength of the brick body. The invention has the advantages of high solid waste utilization rate, high brick body strength, fast brick making efficiency and simple process, provides new technology for efficient resource utilization of sludge incineration ash, has good social, environmental and economic benefits, and has industrialization prospects good.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a preparation method of a clinker-free burning-free environmental protection brick mixed with sludge incineration ash. Background technique [0002] With the continuous advancement of my country's urbanization process, my country's sewage treatment capacity has been rapidly improved, and during this process, sewage treatment plant sludge has also increased significantly. Sewage treatment plant sludge is a fluid waste with a moisture content of 75% to 99% formed by multi-stage treatment in urban sewage treatment plants. In addition, the sludge also contains a large number of pathogens, parasite eggs, heavy metals and various harmful organic pollutants. As of the end of June 2019, more than 5,500 sewage treatment plants have been built in cities across the country, with a sewage treatment capacity of 210 million cubic meters per day and an annual production of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B40/02
CPCC04B28/006C04B2111/00017C04B2201/50C04B14/06C04B14/02C04B22/064C04B18/023C04B22/145C04B22/124C04B24/122C04B40/0218C04B40/0281Y02W30/91
Inventor 张辰谭学军郑晓光水亮亮
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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