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Coal ganguebottom slag and coal ash compound gel material and preparation method thereof

A technology for cementitious materials and coal gangue, which is applied in the field of preparation of industrial solid waste compound cementitious materials, can solve the problems of large energy consumption, serious environmental pollution and small profit margins, save energy and resource consumption, and eliminate the Environmental pollution and the effect of recycling

Active Publication Date: 2017-07-21
SHANXI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. Calcining the above-mentioned solid waste and other raw materials such as limestone to prepare cement clinker, and then configuring some gypsum to grind together, calcining clinker still needs to consume a lot of energy, causing serious environmental pollution, and still using primary resources such as limestone, the production cost Still very high, profit margins are small, and it is difficult for enterprises to accept

Method used

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  • Coal ganguebottom slag and coal ash compound gel material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The coal gangue bottom slag, fly ash, quicklime and gypsum that have been crushed with a particle size below 4mm are respectively 30%, 50%, 10%, and 10% in the following proportions, and then 0.3% of the total weight of the above-mentioned mixture is added. , mixed into a cement mill for grinding, finely ground to obtain a cementitious material with properties equivalent to 325 cement, and the performance was tested according to the national standard for cement. The results are shown in Table 1.

Embodiment 2

[0022] The coal gangue bottom slag, fly ash, quicklime and gypsum that have been crushed with a particle size below 4mm are respectively added in the following proportions of 15%, 45%, 30%, and 10%, and then 0.4% of the total weight of the above-mentioned mixture is added. , mixed into a cement mill for grinding, finely ground to obtain a cementitious material with properties equivalent to 325 cement, and the performance was tested according to the national standard for cement. The results are shown in Table 1.

Embodiment 3

[0024] The coal gangue bottom slag, fly ash, quicklime and gypsum that have been crushed with a particle size below 4mm are respectively 10%, 30%, 50%, and 10% in the following proportions, and then 0.4% of the total weight of the above-mentioned mixture is added. , mixed into a cement mill for grinding, finely ground to obtain a cementitious material with properties equivalent to 325 cement, and the performance was tested according to the national standard for cement. The results are shown in Table 1.

[0025] The performance testing result of the cement obtained by compounding three kinds of examples in table 1

[0026]

[0027] The used national standard of the performance detection of the present invention is as follows:

[0028] 1. GB / T 1345-2005 cement fineness inspection method;

[0029] 2. GB / T 1346-2011 cement standard consistency water consumption, setting time, stability test method;

[0030] 3. GB / T8014-2008 cement specific surface area test method;

[0031] ...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to a preparation method of a compound gel material prepared from industrial solid wastes such as coal ganguebottom slag and coal ash. The invention discloses a coal ganguebottom slag and coal ash compound gel material and aims to provide a compound gel material which is prepared by directly compounding and grinding coal sintering products of a coal electricity plant and the solid wastes such as the coal ganguebottom slag and the coal ash without a clinkersintering process and is extremely low in cost, simple in production process and stable in performance. The coal ganguebottom slag and coal ash compound gel material is prepared from the following components in percentage by weight: 10 to 35 percent of the coal ganguebottom slag, 25 to 55 percent of the coal ash, 5 to 50 percent of quick lime and 8 to 12 percent of gypsum.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a preparation method of industrial solid waste composite gelling materials such as coal gangue bottom slag and fly ash. Background technique [0002] Cement is an important material in the construction industry, with a large demand, high energy consumption, and a large demand for raw materials. The main raw material such as limestone is a primary resource, and there is a huge demand for it in other industries, such as metallurgy, medicine and chemical industry. In the long run, this primary resource will face a sharp reduction in reserves, which is not conducive to future generations. At the same time, the coal power industry produces a large amount of solid waste every year, such as coal gangue bottom slag and fly ash. Due to the insufficient utilization of existing technologies and conditions, these solid wastes pile up into mountains and cause serious p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/26C04B11/28
CPCC04B7/26C04B11/28Y02P40/10
Inventor 张金才程芳琴邱瑞芳
Owner SHANXI UNIV