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Building silt soil non-sintered ceramic aggregate and preparation method thereof

A technology of silt and construction, applied in the field of unfired ceramsite and its preparation, can solve the problems of complex sintering process, high energy consumption, and influence on popularization and application, and achieve the effect of simple process and broadened utilization channels

Active Publication Date: 2012-08-01
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, removing impurities in construction silt or adding special additives to improve performance will greatly increase production costs. At the same time, the sintering process of products (especially ceramsite) is complicated and energy-consuming, which affects the popularization and application of this technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take the following formula ratio raw materials according to the proportion:

[0031] Solid content: construction silt: 76%, cement: 3%, quicklime: 3%, perlite: 3%, desulfurized gypsum: 4%, fly ash: 5%, water glass: 6%. The water consumption is 50% of the total mass of the above-mentioned solid components.

[0032] Preparation method: 1) Materials such as construction silt, cement, quicklime, desulfurized gypsum, perlite and fly ash are evenly mixed by a mixer, and then put into a disc granulator;

[0033] 2) Put the water glass into the water, and after the dissolution is uniform and complete, start the disc granulator, and within 20 minutes, spray all the prepared solution into the powder of the granulator, and continue to run the disc The granulator can form into balls in 40 minutes; during the above process, the inclination angle of the ball forming disc is controlled at 50°, and the speed is 12r / min;

[0034] 3) Put the balled ceramsite into fresh water at T=20±2°...

Embodiment 2

[0037] Take the following formula ratio raw materials according to the proportion:

[0038] Construction silt: 65%, cement: 4%, quicklime: 4%, perlite: 6%, desulfurized gypsum: 5%, fly ash: 7%, water glass: 9%. The water consumption is 55% of the total mass of solid powder. Preparation Procedure Copper Example 1.

[0039] The bulk density of the obtained ceramsite is 500kg / m 3 , Cylinder compressive strength is 1.2MPa, 1h water absorption rate is 18%.

Embodiment 3

[0041] Take the following formula ratio raw materials according to the proportion:

[0042] Construction silt: 70%, cement: 2%, quicklime: 4%, perlite: 6%, desulfurized gypsum: 4%, fly ash: 6%, water glass: 8%. The water consumption is 60% of the total mass of solid powder. Preparation Procedure Copper Example 1.

[0043] The bulk density of the obtained ceramsite is 510kg / m 3 , Cylinder compressive strength is 1.1MPa, 1h water absorption rate is 18%.

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Abstract

The invention discloses a building silt soil non-sintered ceramic aggregate, which is characterized by comprising solid components and water, wherein every kilogram of solid components comprise the following components in percentage by weight: 60-80 percent of building silt soil, 2-5 percent of cement, 2-5 percent of quick lime, 2-5 percent of desulfurized gypsum, 2-7 percent of perlite, 2-8 percent of fly ash and 5-10 percent of water glass; and the amount of the water accounts for 45-60 percent of the total mass of the solid components. The invention also discloses a preparation method of the ceramic aggregate. The ceramic aggregate and the preparation method thereof have the characteristics of simple pretreatment of building silt soil, simple preparation process and capabilities of eliminating industrial wastes such as fly ash and desulfurized gypsum without large-sized calcining equipment and expanding the utilization approach of the solid waste material; and by adopting a non-sintering process, the ceramic aggregate and the preparation method thereof have the advantages of environmental protection effects such as energy conservation and low carbon compared with a roasting process.

Description

Technical field: [0001] The invention relates to a non-fired ceramsite prepared by using building silt and its preparation method, which provides a new way for resource utilization of building silt, can effectively improve the resource utilization rate of building silt, and reduce its impact on the urban environment. Negative Effects. Background technique: [0002] The comprehensive utilization of building silt is an important way to save land and resources, and an important measure to develop circular economy and build an environment-friendly and resource-saving society. At present, the mature technologies and products for resource utilization of construction silt mainly include building materials such as sintered bricks and sintered ceramsite. However, due to the wide range of sources of construction silt, the composition of it varies greatly, some have many impurities, and some have a moisture content as high as 70. % or more, and some building silts have too low plastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B18/30
CPCY02W30/91
Inventor 耿健柯鸿阳梁鹏炯罗江郎晓明朱哲楠
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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