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Formula and method for preparing sprayed concrete through coal-to-oil residues

A shotcrete and coal-to-oil technology, applied in the field of cement concrete materials, can solve problems such as affecting the healthy development of enterprises, and achieve the effects of protecting the natural ecological environment, reducing dust and improving strength

Inactive Publication Date: 2018-01-23
山西潞安环保能源开发股份有限公司常村煤矿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The coal-to-oil project is a high-efficiency coal utilization technology vigorously developed by the country. With the popularization and application of a number of coal chemical technologies such as coal gasification, coal oilification, and coal electrification, a large amount of residue will be produced during the coal-to-oil process. 10,000 tons of oil will produce about 15,000 tons of coal-to-oil residues, which need to be stacked and landfilled, which brings great pressure to environmental protection and affects the healthy development of enterprises

Method used

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  • Formula and method for preparing sprayed concrete through coal-to-oil residues

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Experimental program
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Effect test

Embodiment 1

[0025] Sieving the coal-to-oil residue through a filter sieve to obtain coal-to-oil residue with a particle size of 0.1-10 mm for use;

[0026] Take 60 parts of the above-mentioned coal-to-oil residue, 25 parts of Jin brand ordinary Portland cement, 8 parts of water, and 3 parts of composite admixture. The composite admixture is composed of silica fume, S95 mineral powder, and redispersible latex powder. The weight ratio of the latter is 1:1:0.2;

[0027] Mix the raw materials in the above parts by weight evenly to obtain the shotcrete material with grade C40 of the present invention, which can be used in the conventional shotcrete process.

Embodiment 2

[0029] Sieving the coal-to-oil residue through a filter sieve to obtain coal-to-oil residue with a particle size of 0.1-10 mm for use;

[0030] Take 55 parts of the above-mentioned coal-to-oil residue, 15 parts of Jin brand ordinary Portland cement, 5 parts of water, and 1 part of composite admixture. The composite admixture is composed of silica fume, S95 mineral powder, and redispersible latex powder. The weight ratio of the latter is 1:1:0.2;

[0031] Mix the raw materials in the above parts by weight evenly to obtain the shotcrete material with grade C40 of the present invention, which can be used in the conventional shotcrete process.

Embodiment 3

[0033] Sieving the coal-to-oil residue through a filter sieve to obtain coal-to-oil residue with a particle size of 0.1-10 mm for use;

[0034] Take 80 parts of the above-mentioned coal-to-oil residue, 35 parts of Jin brand ordinary Portland cement, 10 parts of water, and 4 parts of composite admixture. The composite admixture is composed of silica fume, S95 mineral powder, and redispersible latex powder. The weight ratio of the latter is 1:1:0.2;

[0035] Mix the raw materials in the above parts by weight uniformly to obtain the shotcrete material with a strength grade of C40 of the present invention, which can be used in conventional shotcrete technology.

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Abstract

The invention relates to a formula for preparing sprayed concrete through coal-to-oil residues. The sprayed concrete is prepared by mixing the following substances in parts by weight: 55 to 80 parts of coal-to-oil residues with the particle diameter being 0.1 to 10 mm, 15 to 35 parts of cement, 5 to 10 parts of water and 1 to 4 parts of composite additives. According to the preparation method, thecoal-to-oil residues are sieved through a filtering sieve; particles being greater than 10mm and particles being smaller than 0.1mm are sieved away; the coal-to-oil residues meeting the requirementsare obtained; the sieved residues, cement, water and additives are uniformly mixed according to the weight parts to obtain the sprayed concrete material provided by the invention. The formula and themethod for preparing the sprayed concrete through coal-to-oil residues have the advantages that the coal-to-oil residues are comprehensively utilized; the cyclic utilization of resources is realized;the energy-saving and emission reduction effects are obvious.

Description

technical field [0001] The invention belongs to the field of cement concrete materials, and in particular relates to a method for preparing shotcrete by utilizing coal-to-oil residue. Background technique [0002] The coal-to-oil project is a high-efficiency coal utilization technology vigorously developed by the country. With the popularization and application of a number of coal chemical technologies such as coal gasification, coal oilification, and coal electrification, a large amount of residue will be produced during the coal-to-oil process. 10,000 tons of oil will produce about 15,000 tons of coal-to-oil residues, which need to be stacked and landfilled, which brings great pressure to environmental protection and affects the healthy development of enterprises. [0003] How to use coal-to-oil residues to realize the recycling of resources is an urgent problem to be solved at present. Contents of the invention [0004] In view of the above situation, the object of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 韩玉明薛利民郜富平王菲范红斌白璐管学茂张海波黄伦杰李晓军
Owner 山西潞安环保能源开发股份有限公司常村煤矿
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