Ceramicite using ash from incineration of refuse as raw material and its prodn. method

A waste incineration fly ash and raw material technology, applied in applications, clay products, household utensils, etc., can solve the problems of land shortage, high cost of fly ash, large construction investment, etc., to reduce demand, reduce disposal costs, and reduce resources wasteful effect

Inactive Publication Date: 2006-09-13
天津渤海环保工程有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The actual situation in China is: on the one hand, there is a shortage of land for landfills at present, and the construction investment is large, and the cost of cementing the fly ash before landfilling is too high (1500 yu

Method used

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Experimental program
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Effect test

Embodiment Construction

[0013] The waste incineration fly ash used in the present invention is taken from the flue gas purification system of Tianjin Shuanggang Waste Incineration Power Plant. The main chemical components of the fly ash are shown in Table 1.

[0014] Material name

Loss on ignition

SiO 2

Al 2 o 3

Fe 2 o 3

CaO

MgO

K 2 o

Na 2 o

SO 3

Cl -

fly ash

7.3~

9.5

41.5~

52.5

12.8~

19.5

3.6~

6.8

12.6~

14.5

3.0~

4.2

2.2~

3.8

2.0~

2.6

3.1~

3.5

1.6~

2.3

[0015] The chemical composition of ceramsite raw materials is the main factor leading to ceramsite expansion. According to their function can be divided into 3 categories:

[0016] (1) pottery composition, including SiO 2 、Al 2 o 3 , Fe 2 o 3 , accounting for about 3 / 4 of the raw materials;

[0017] (2) Flux componen...

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Abstract

A haydite is prepared from the fly ash (20-80 Wt%) generated by burning garbage and clay (rest) through mixing, granulating, and high-temp calcining at 1000-1400 deg.C.

Description

technical field [0001] The invention relates to a ceramsite and a preparation method thereof, in particular to a ceramsite using waste incineration fly ash as a raw material and a method thereof. Background technique [0002] The rapid growth of urban domestic waste has become an important issue restricting the sustainable development of cities. Statistics show that in 2001, the annual domestic waste in Chinese cities has reached 135 million tons, while the degree of harmless treatment is only 20%. The accumulated garbage over the years has reached 7 billion tons, occupying about 800,000 mu of land, causing potential impact and harm to the environment. Garbage incineration technology can effectively destroy organic toxic substances, greatly reduce the volume of garbage (generally can be reduced to 5% to 30% of the original volume), and the waste heat generated by incineration can also be recycled. One of the main methods of harmless and volume reduction technology. However...

Claims

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Application Information

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IPC IPC(8): C04B33/135
CPCY02P40/60
Inventor 高亮张景辉高建东张曙光
Owner 天津渤海环保工程有限公司
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