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Concrete wall material by furnace-bottom dry slag and its production

A concrete wall and dry slag technology, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problem that the water type slag removal system cannot adapt, the water consumption and wastewater discharge are large, and the ash removal system Problems such as large construction costs and maintenance costs, to achieve significant social benefits, improve impermeability performance, and improve appearance

Inactive Publication Date: 2007-01-17
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous increase of power plant capacity and unit capacity, the construction and maintenance costs of the ash removal system are high, and the water consumption and wastewater discharge are large. For areas lacking water resources or strict environmental protection requirements, the water type slag removal system can no longer adapt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0022] Use furnace bottom dry slag with the aforementioned properties and chemical composition as fine aggregate, and cement and stone chips to make small hollow blocks of furnace bottom dry slag concrete according to the ingredient ratio in Table 3:

[0023] Numbering

[0024] Mix the three materials evenly and put them into the mixer for mixing. The mixing time is controlled at about 3 minutes. The water consumption is checked visually to ensure that the mixture meets the molding requirements. The mixer uses a twin-shaft concrete mixer. The amount of dry slag at the bottom of the furnace should be properly adjusted according to different cement varieties, the maximum particle size of the stones, the change of particle gradation, and the model of the molding machine. The mixed material is fed into the automatic molding machine according to the block size (the main block size is 390×190×190) for automatic molding, and the vibration molding time is 30 seconds. The fo...

Embodiment 4-6

[0029] Make furnace bottom dry slag concrete porous brick according to the ingredient ratio in Table 5:

[0030] Numbering

[0031] Put the three materials into the mixer according to the above ratio and stir them. The amount of water added is visually checked, and the stirring time is 3 minutes. The mixed material is fed into the automatic molding machine according to the block size (the main block size is 240×115×90) for automatic molding. The formed blocks are naturally maintained in the open air and watered 4-6 times a day.

[0032] For the concrete porous bricks produced according to the above process, their mechanical properties were tested with reference to JC943-2004 "Concrete Porous Bricks". The test results are listed in Table 6.

[0033] Numbering

[0034] It can be seen from Table 6 that the performance indexes of the above concrete porous bricks respectively meet the index requirements of MU10, MU15 and MU20 in JC943-2004 "Concrete Porous Br...

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PUM

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Abstract

A concrete wall material from furnace floor dried slag and its production are disclosed. The process is carried out by mixing cement with lime crumb and furnace floor dried slag in proportion of 1:2-6:0.5-3, adding into water, agitating, block forming and naturally maintaining. It costs low and saves natural resources, has better density, strength and appearance.

Description

technical field [0001] The present invention relates to a new type of building wall material, especially concrete wall material including small concrete hollow blocks and porous bricks, specifically refers to the concrete wall material produced by using the dry slag at the bottom of the fly ash furnace of a coal-fired power plant and its manufacture method. Background technique [0002] Coal-fired power plant fly ash can be divided into two parts: dry ash and furnace bottom slag according to different collection methods. The dry ash refers to the undisturbed fly ash collected by the dry dust collector and transported and stored in a dry state, accounting for about 85% of the total fly ash. Furnace bottom slag is a coarse-grained ash formed by the ash particles gathered into coarse particles during the combustion process of coal powder, which directly falls to the bottom of the furnace due to its own weight and is quenched by water. It is usually directly used as fine aggreg...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/06C04B14/02
CPCC04B28/02Y02W30/91C04B14/06C04B18/141
Inventor 沈燕华刘国亮朱春江李阳施钟毅
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS