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Aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and production method of aerated concrete block

A technology of air-entrained concrete and steel slag, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as environmental pollution and resource waste, and achieve the effect of high strength and small drying shrinkage value

Active Publication Date: 2012-10-31
TAIZHOU ZHENCHANG IND RESIDUE COMPREHENSIVE UTILIZATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention makes full use of the special slag obtained after repeated utilization of steel slag and iron-containing waste slag, and successfully applies industrial waste slag to the building material production industry, thereby solving the problems of resource waste and environmental pollution to a certain extent

Method used

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  • Aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and production method of aerated concrete block
  • Aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and production method of aerated concrete block
  • Aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and production method of aerated concrete block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: a kind of aerated concrete block that utilizes special slag and tailings steel slag to produce, it is characterized in that the raw material component and weight percentage of described aerated concrete block are:

[0033]

[0034]

[0035] Add 1% of its total weight of additive A to the above substances, gas-generating aluminum powder with a purity of 0.05% of the above substances’ total weight ≥ 98%, and water of 0.5 times the total weight of the above substances; wherein the additive A is composed of sodium lignosulfonate, Ethylene glycol and sodium hydroxide are mixed in a weight ratio of 3:3:4;

[0036] Wherein: the tailing steel slag is made of the hot stewed steel slag of Jiangxi Xinyu Iron and Steel Company through conventional crushing, screening and magnetic separation processes, and the selected particle size is ≤ 20mm, the moisture content is 10% to 15%, and the composition requirement is : TFe≤16%, MFe≤2%, f-CaO≤4%, f-MgO≤0.2% tailing st...

Embodiment 2

[0052] An aerated concrete block produced by using special slag and tailing steel slag, characterized in that the raw material components and weight percentages of the aerated concrete block are:

[0053]

[0054]

[0055] Add 1% of its total weight of additive A to the above substances, gas-generating aluminum powder with a purity of 0.05% of the above substances’ total weight ≥ 98%, and water of 0.55 times the total weight of the above substances; wherein the additive A is composed of triethanolamine, Sodium lignosulfonate and sodium hydroxide are mixed in a weight ratio of 1:5:4;

[0056] The tailing steel slag is the hot stewed steel slag from Hunan Xiangtan Iron and Steel Company. %, MFe≤2%, f-CaO≤4%, f-MgO≤0.2% tailing steel slag;

[0057] The modified material is composed of quartz sand and volcanic ash in a weight ratio of 1:2.

[0058] Adopt the material described in embodiment 2 and the method for proportioning production air-entrained concrete block, it is c...

Embodiment 3

[0072] An aerated concrete block produced by using special slag and tailing steel slag, characterized in that the raw material components and weight percentages of the aerated concrete block are:

[0073]

[0074]

[0075] Add 1% of its total weight of additive A to the above substances, gas-produced aluminum powder with a purity of 0.05% of the above substances’ total weight ≥ 98%, and 0.6 times the water of the above substances’ total weight; wherein the additive A is made of lignosulfonic acid Sodium, ethylene glycol, and sodium sulfate are mixed in a weight ratio of 3:2:5;

[0076] The tailing steel slag is the hot stewed steel slag of Hunan Lianyuan Iron and Steel Company, after conventional crushing, screening, magnetic separation and other processes, the selected particle size is ≤ 20mm, the moisture content is 10% to 15%, and the composition requirement is: TFe ≤16%, MFe≤2%, f-CaO≤4%, f-MgO≤0.2% tailing steel slag;

[0077] The modified material is composed of c...

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Abstract

The invention provides an aerated concrete block produced through using specially-made mineral waste residue and tailings steel slag and a production method of the aerated concrete block. The aerated concrete block is produced through the following steps: adding an additive A, an additive B and water in components as follows: 40 to 50% of specially-made mineral waste residue obtained in a such way that cinder is obtained through the production process of recycling steel slag discharged from Taizhou Zhenchang Industrial Waste Residue Comprehensive Utilization LTD and metallurgical and chemicalferrous waste residue, and then is water-quenched, 35 to 45% of tailings steel slag, 2 to 4% of cement clinker, 1 to 3% of gypsum, and 8 to 12% of modified wood, wherein the grain size of the specially-made mineral waste residue is less than or equal to 5 mm, the grain size of the tailings steel slag is less than or equal to 20 mm, the additive A accounts for 1% of the total weight of the components, the additive B accounts for 0.05% of the total weight of the components, and water accounts for 0.5 to 0.6 times of the total weight of the components; and conducting mixing, heating, air-entrapping, steaming and pressing, and curing in sequence. The aerated concrete block produced by adopting the production method is high in strength, and small in drying shrinkage value, and can meet the block standards of the A3.5 grade and the B09 grade in the JC1062-2007 foam concrete block standard.

Description

technical field [0001] The invention relates to the comprehensive utilization of industrial solid waste, in particular to a method for producing an aerated block for building non-load-bearing inner and outer walls of a frame structure by using the special slag and tailing steel slag produced by Taizhou Zhenchang Company. Background technique [0002] Steel slag is a bulk industrial waste slag discharged from steelmaking converters or electric furnaces. The discharge amount is about 15% of the steel output, and generally contains about 10% of scrap steel and more than 15% of iron oxide components, and is rich in Ca and Mg. The basic oxide compound mineral clinker of the composition, and most of them are in the solid solution compound state of slag-coated iron and iron-coated slag, which is difficult to break and grind. It is labor-intensive and labor-intensive to achieve crushing, separation and purification for reuse. strenuous. Therefore, most of the low-grade iron-contain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/30
CPCY02W30/91
Inventor 蔡雪军谢大勇崔四荣韩伟王崇英王晓东张冰靖振梅
Owner TAIZHOU ZHENCHANG IND RESIDUE COMPREHENSIVE UTILIZATION
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