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Method for preparing sintered water-permeable brick by utilizing ceramic roller waste and municipal sludge

A technology for urban sludge and ceramic rollers, which is applied in the production and application of ceramic products and ceramic materials, can solve problems such as waste of resources, and achieve the effects of low production cost, saving drying time and reducing production cost.

Inactive Publication Date: 2019-08-30
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These wastes contain a high content of alumina, and if they are piled up idle, it will cause waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 41 parts of ceramic roller waste, 26 parts of urban sludge, 9 parts of feldspar, 10 parts of water glass, and 14 parts of water in parts by weight. Add the weighed ceramic roller waste, municipal sludge, and feldspar into the mixer, and stir for 5 minutes at a speed of 30 rpm. Then add the weighed water glass and water, and continue to stir for 5 minutes. The homogeneously mixed raw materials were aged at room temperature for 24 hours.

[0031] The stale powder was put into a mold, and pressed under a pressure of 50 MPa to obtain a green body. The green body was placed in a microwave dryer with a frequency of 2.45 GHz and a power of 3 KW, and dried for 3 minutes. Place the dried green body in a furnace, raise the temperature to 1380°C at a rate of 5°C / min, and keep it warm for 3 hours. Naturally lower the temperature to obtain sintered permeable bricks prepared from ceramic roller waste and municipal sludge.

[0032] The compressive strength of the sintered pe...

Embodiment 2

[0034] Weigh 35 parts of ceramic roller waste, 30 parts of urban sludge, 10 parts of feldspar, 8 parts of water glass, and 17 parts of water in parts by weight. Add the weighed ceramic roller waste, municipal sludge, and feldspar into the mixer, and stir for 8 minutes at a speed of 40 rpm. Then add the weighed water glass and water, and continue to stir for 8 minutes. The homogeneously mixed raw materials were aged at room temperature for 20 hours.

[0035] The stale powder was put into a mold, and pressed under a pressure of 55 MPa to obtain a green body. The green body was placed in a microwave dryer with a frequency of 2.45 GHz and a power of 3 KW, and dried for 2 minutes. Place the dried green body in a furnace, raise the temperature to 1350°C at a rate of 3°C / min, and keep it warm for 2 hours. Naturally lower the temperature to obtain sintered permeable bricks prepared from ceramic roller waste and municipal sludge.

[0036] The compressive strength of the sintered pe...

Embodiment 3

[0038] Take by weight 45 parts of ceramic roller waste, 20 parts of urban sludge, 5 parts of feldspar, 12 parts of water glass, and 18 parts of water. Add the weighed ceramic roller waste, municipal sludge, and feldspar into the mixer, and stir for 10 minutes at a speed of 30 rpm. Then add the weighed water glass and water, and continue to stir for 10 minutes. The homogeneously mixed raw materials were aged at room temperature for 28 hours.

[0039] Put the stale powder into a mold and press it under a pressure of 60 MPa to obtain a green body. The green body was placed in a microwave dryer with a frequency of 2.45 GHz and a power of 3 KW, and dried for 5 minutes. Place the dried green body in the furnace, raise the temperature to 1400°C at a rate of 4°C / min, and keep it warm for 3 hours. Naturally lower the temperature to obtain sintered permeable bricks prepared from ceramic roller waste and municipal sludge.

[0040] The compressive strength of the sintered permeable br...

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Abstract

The invention discloses a method for preparing a sintered water-permeable brick by utilizing ceramic roller waste and municipal sludge. The sintered water-permeable brick comprises the following raw materials, in parts by weight: 35-45 parts of the ceramic roller waste, 20-30 parts of the urban sludge, 5-10 parts of feldspar, 8-12 parts of water glass, and 12-18 parts of water. The preparation method comprises the steps of material preparation, mixing, ageing, molding, microwave drying and firing. The method provided by the invention realizes the resource utilization of the solid waste, reduces the production costs of the water-permeable brick, and has the advantages of a simple preparation process, high production efficiency, environmental protection and energy saving.

Description

technical field [0001] The invention belongs to the technical fields of solid waste treatment and ceramics, and in particular relates to a method for preparing sintered permeable bricks by using waste ceramic rollers and urban sludge. Background technique [0002] In recent years, with the continuous increase in the amount of water treated by sewage plants, the problem of municipal sludge treatment has become increasingly serious. The amount of sludge produced by my country's municipal sludge treatment plants is as high as 60 million tons per year. If it is not properly handled in time, it will cause serious secondary pollution to the environment. Traditional sludge treatment technologies mostly use temporary measures such as deep soil landfill, ocean dumping, and agricultural composting, which cannot fundamentally realize the disposal and utilization of sludge "reduction, stabilization, harmlessness, and resource utilization". Municipal sludge contains SiO 2 、Al 2 o 3 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/30C04B33/32C04B38/06
CPCC04B33/1321C04B33/1324C04B33/1328C04B33/30C04B33/32C04B38/0665C04B2235/3201C04B2235/3427C04B2235/3463C04B2235/6562C04B2235/6567C04B2235/96Y02P40/60
Inventor 孙海滨郭学李蛟乐红志杨赞中杜庆洋
Owner SHANDONG UNIV OF TECH
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