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Production method for preparing sintering thermal insulation brick from sludge

A production method and technology of thermal insulation bricks, applied in the field of thermal insulation bricks, can solve problems such as hidden dangers of the ecological environment, environmental groundwater pollution, seepage, etc.

Inactive Publication Date: 2016-03-30
ZHEJIANG JIEFENG ENVIRONMENTAL PROTECTION TECH ENG COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, simple incineration, the temperature is only 300-500 ℃, and dioxin will inevitably be produced during incineration, which is a serious hazard to the environment
The main problem caused by sanitary landfill is the problem of seepage, which has potential pollution to the environment, especially groundwater
Sludge is directly used for agriculture and landscaping, resulting in heavy metals, pathogenic bacteria and organic pollutants in the sludge will cause new environmental "secondary pollution" and bring hidden dangers to the ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: a kind of production method of sludge system sintered insulation brick, carries out according to the following steps:

[0039] (1) Preliminary preparation:

[0040] ① Shale: according to the chemical composition of different shales, control Al 2 o 3 The content is at 18-20%, SiO 2 The content of MgO is controlled at 60%, the content of Cao is controlled below 3%, other MgO 2 、So 3 The content of each shall not be greater than 1%;

[0041] ②, using a variety of crushers: controlling the combination of crushing fineness of sludge, shale, and coal gangue mixtures, the fineness of the mixture is less than 0.05mm, accounting for 45%, and the particle size is 0.05mm, accounting for 20%; Particle size of 1.2mm accounts for 30%;

[0042] ③. It is to add a mixture of polymer binder and water in raw material treatment to improve the plasticity of sludge, shale and coal gangue mixture;

[0043]④. It is to design the hole pattern of sludge, shale and coal gangu...

Embodiment 2

[0064] A kind of production method of sludge system sintered insulation brick, carries out according to the following steps:

[0065] (1) Preliminary preparation:

[0066] ① Shale: according to the chemical composition of different shales, control Al 2 o 3 The content is at 18-20%, SiO 2 The content of MgO is controlled at 60%, the content of Cao is controlled below 3%, other MgO 2 、So 3 The content of each shall not be greater than 1%;

[0067] ②, a variety of crushers are used: control the crushing fineness of the sludge, shale, and coal gangue mixture, the fineness of the mixture is less than 0.05mm, accounting for 48%, and the particle size is 1.0mm, accounting for 23%; Particle size of 1.5mm accounts for 27%;

[0068] ③. It is to add a mixture of polymer binder and water in raw material treatment to improve the plasticity of sludge, shale and coal gangue mixture;

[0069] ④. It is to design the hole pattern of sludge, shale and coal gangue insulation bricks, increa...

Embodiment 3

[0090] A kind of production method of sludge system sintered insulation brick, carries out according to the following steps:

[0091] (1) Preliminary preparation:

[0092] ① Shale: according to the chemical composition of different shales, control Al 2 o 3 The content is 18-20%, SiO 2 The content of MgO is controlled at 60%, the content of Cao is controlled below 3%, other MgO 2 、So 3 The content of each shall not be greater than 1%;

[0093]②, a variety of crushers are used: control the crushing fineness of sludge, shale, and coal gangue mixtures, the fineness of the mixture is less than 0.05mm, accounting for 50%, and the particle size is 1.2mm, accounting for 25%; Particle size of 2mm accounts for 25%;

[0094] ③. It is to add a mixture of polymer binder and water in raw material treatment to improve the plasticity of sludge, shale and coal gangue mixture;

[0095] ④. It is to design the hole pattern of sludge, shale and coal gangue insulation bricks, increase the po...

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Abstract

The invention relates to a thermal insulation brick and in particular relates to a production method for preparing a sintering thermal insulation brick from sludge. The production method for preparing the sintering thermal insulation brick from the sludge comprises the following treatment steps: carrying out previous preparation, drying the sludge, carrying out co-grinding on the sludge, shale and coal gangue, preparing a raw sintering thermal insulation brick from the sludge, carrying out delaying curing on the raw thermal insulation brick on a kiln car, preheating and drying the raw thermal insulation brick, drying the raw thermal insulation brick and firing to obtain the sintering thermal insulation brick by virtue of a roasting tunnel kiln. The production method for preparing the sintering thermal insulation brick has the advantages that the continuous treatment is realized, performances are improved, the product grade is enhanced, the energy is saved and the consumption is reduced.

Description

technical field [0001] The invention relates to thermal insulation bricks, in particular to a production method of sludge-made sintered thermal insulation bricks. Background technique [0002] Sludge refers to solid, semi-liquid and liquid waste produced by sewage treatment plants. Generally, the water content is about 85%, which contains a large amount of organic matter, and also contains certain heavy metals, viruses, pathogens, parasite eggs and other harmful substances. How to reasonably solve the world problem of sludge treatment and disposal, and achieve the goal of resourceful, harmless and productive treatment, has become an urgent problem for the society to solve. [0003] Status of foreign sludge treatment: In the early 1990s, the EU sludge production was 6.5 million tons dry weight. In the 21st century, the sludge production reached 8.9 million tons dry weight. In the past five years in the UK and the US, the sludge discharge has increased by 5%-10% every year,...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B33/132
CPCC04B33/1315C04B33/132C04B33/1321C04B38/0003C04B2235/77C04B2235/9607C04B33/00C04B38/0074C04B38/0067Y02P40/60
Inventor 应国庆应健威
Owner ZHEJIANG JIEFENG ENVIRONMENTAL PROTECTION TECH ENG COMPANY
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