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Full industrial solid waste high strength ready-to-use foamed concrete material and preparation method thereof

A technology for industrial solid waste and concrete, which is applied in applications, ceramic products, household appliances, etc., can solve the problems of low volume of solid waste and large consumption of natural minerals, achieve a wide range of applications, alleviate the depletion of production resources, and reduce the production cost. cost effect

Active Publication Date: 2018-11-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of large consumption of natural minerals and low volume of solid waste in the above-mentioned prior art, the present invention aims to provide a high-strength ready-to-use foamed concrete material and preparation method for all industrial solid waste

Method used

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  • Full industrial solid waste high strength ready-to-use foamed concrete material and preparation method thereof
  • Full industrial solid waste high strength ready-to-use foamed concrete material and preparation method thereof
  • Full industrial solid waste high strength ready-to-use foamed concrete material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 Shown, a kind of method that whole industry solid waste prepares cementitious material, comprises the steps:

[0056] (1) The total amount of raw materials is 1kg, and the mass ratio is 15%: 24%: 44%: 17%. Weigh aluminum ash, red mud, carbide slag and phosphogypsum respectively, and add different raw materials into wet milling In the middle grinding, the mixture is ground to a fineness of 45 μm and 30% of the sieve. Among them, the chemical compositions of aluminum ash, red mud, carbide slag, phosphogypsum and fly ash are shown in Table 1;

[0057] (2) Put the raw material after grinding in step (1) into the homogenization tank, add water according to the mass ratio of 1:4 (raw material and water) to obtain a slurry, heat the slurry to 50°C, wash and stir with water for 3 hours, Dissolve the soluble substances in aluminum ash and carbide slag into the homogenization tank;

[0058] (3) Hydraulically filter the slurry to a water content of 18% (wt.%), ...

Embodiment 2

[0067] A method for preparing a high-strength ready-to-use foamed concrete material from industrial solid waste, comprising the following steps:

[0068] (1) Take by weighing 374.22g, 71.28g, 49.5g and 5g of the cementitious material in Example 1 and phosphogypsum, fly ash and carbide slag respectively, mix uniformly to obtain a mixture, and grind the mixture to fine 30% sieve with a degree of 45μm;

[0069] (2) Put the pulverized mixture in step (1) into the reaction tank, add warm water at 35°C at a water-cement ratio of 50%, stir for 2 minutes, and then add 30% peroxide Hydrogen solution, the amount of hydrogen peroxide added is 4.3% of the volume of warm water. After stirring for 30s, pour the slurry into the mold box for molding; 28 days under the above curing conditions. According to the national standard GB / T 11969-2008 "Autoclaved Aerated Concrete Performance Test Method", the concrete test block prepared in this example was tested, and the performance was compared w...

Embodiment 3

[0073] 1. A method for preparing cementitious materials from all industrial solid wastes, comprising the steps of:

[0074] (1) The total amount of raw materials is 1kg, according to the mass ratio of 14%: 26%: 43%: 17%, weigh aluminum ash, red mud, carbide slag and phosphogypsum respectively, and add different raw materials into the powder in the wet mill Grinding, grinding the mixture to a fineness of 45 μm and 30% of the sieve. Among them, the chemical composition of aluminum ash, red mud, carbide slag, phosphogypsum and fly ash are shown in Table 1;

[0075] (2) Put the ground raw material in step (1) into the homogenization tank, add water according to the mass ratio of 1:3 (raw material and water) to obtain a slurry, heat the slurry to 60°C, wash and stir for 4 hours, and make The soluble substances in aluminum ash and carbide slag are dissolved into the homogenization tank;

[0076] (3) Press filter the slurry to a water content of 25% (wt.%), send it to a 600° C. dry...

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Abstract

The invention relates to a full industrial solid waste high strength ready-to-use foamed concrete material and a preparation method thereof, and belongs to the technical field of foamed concrete preparation. The method adopts a preparation idea of synergistic complementarity and two-stage transition of a plurality of kinds of industrial solid waste: first, the industrial solid waste is prepared into a high-activity cementitious material, the high-activity cementitious material is prepared into the high strength ready-to-use foamed concrete material, the high strength ready-to-use foamed concrete material is prepared by full industrial solid waste as the cementitious material and an admixture; The high strength ready-to-use foamed concrete material is prepared while large-scale resource utilization of the industrial solid waste such as aluminum ash, red mud, calcium carbide slag, phosphogypsum and pulverized coal without consumption of any natural mineral resources during preparation. In addition, the high strength ready-to-use foamed concrete material prepared by the method does not require autoclave curing or steam curing, only can be cured only under standard curing conditions, thereby greatly reducing the production cost and energy consumption of foamed concrete wall insulation materials, and realizing saving both in resources and energy.

Description

technical field [0001] The invention relates to the technical field of foamed concrete preparation, in particular to a high-strength foamed concrete material prepared from industrial solid waste and a preparation method thereof. Background technique [0002] With the continuous development of my country's economic level and the continuous improvement of the industrialization process, the output of industrial solid waste has also continued to increase. According to data released by the National Bureau of Statistics, by the end of 2015, the total accumulation of industrial solid waste in my country reached 32.7 billion tons, and continued to increase at a rate of more than 3 billion tons per year. At present, the preparation of building materials from industrial solid waste has been developed to a certain extent. However, the types of utilization are limited to high-activity solid waste such as fly ash and slag. Therefore, there are disadvantages such as a single type of utili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B7/26
CPCC04B7/243C04B28/02C04B2201/20C04B2201/32C04B2201/50C04B18/144C04B18/0427C04B22/144C04B22/068C04B38/02Y02P40/10
Inventor 王文龙姚星亮毛岩鹏宋占龙赵希强孙静
Owner SHANDONG UNIV
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