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Cement grinding aid

A cement grinding aid and modification technology, applied in the field of cement grinding aids, can solve the problems of safety hazards of cement and concrete durability, unstable quality of grinding aids, fluctuation of cement quality, etc., to achieve less pollution and lower free energy. , the effect of low total alkali content

Inactive Publication Date: 2015-10-07
汤海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still many problems in the use of existing domestic grinding aids, such as chloride salts that bring great safety hazards to the durability of cement and concrete; the quality of grinding aids is unstable and the dosage is large, resulting in cement quality fluctuations, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A cement grinding aid, the composition of the cement grinding aid in mass parts is as follows: 10 parts of modified triethanolamine, 0.3 part of polypropylene oxide ethylene oxide ether, 6 parts of fatty acid sodium, 12 parts of sodium acetate, glycerin distillation 2 parts of residue, 2 parts of sodium thiosulfate, 0.2 parts of Tween, 1 part of ammonium nitrate, 2 parts of sodium gluconate, 20 parts of deionized water.

[0021] Wherein, the modified triethanolamine is triethanolamine sulfate compound.

[0022] Wherein, the molecular weight of the polypropylene oxide ethylene oxide ether is 240, and the content of ethylene oxide is 15%.

[0023] Wherein, the mass fraction of the glycerol distillation residue is 42%.

Embodiment 2

[0025] A cement grinding aid, the mass parts of the cement grinding aid are composed as follows: the mass parts of the cement grinding aid are composed as follows: 12 parts of modified triethanolamine, 0.4 parts of polypropylene oxide ethylene oxide ether, 8 parts of sodium fatty acid, 15 parts of sodium acetate, 3 parts of glycerin distillation residue, 3.5 parts of sodium thiosulfate, 0.3 parts of Tween, 2 parts of ammonium nitrate, 3 parts of sodium gluconate, 25 parts of deionized water.

[0026] Wherein, the modified triethanolamine is a mixture of triethanolamine sulfate compound and triethanolamine acetate compound, and its mass ratio is 1:0.2

[0027] Wherein, the molecular weight of described polypropylene oxide ethylene oxide ether is 280 and the content of ethylene oxide is 30

[0028] Wherein, the mass fraction of the glycerol distillation residue is 45

Embodiment 3

[0030] A cement grinding aid, the mass parts of the cement grinding aid are composed as follows: 15 parts of modified triethanolamine, 0.5 part of polypropylene oxide ethylene oxide ether, 15 parts of fatty acid sodium, 24 parts of sodium acetate, glycerin distillation 4 parts of residue, 5 parts of sodium thiosulfate, 0.4 parts of Tween, 3 parts of ammonium nitrate, 5 parts of sodium gluconate, and 40 parts of deionized water.

[0031] Wherein, the modified triethanolamine is a mixture of triethanolamine sulfate compound and triethanolamine acetate compound, the mass ratio of which is 1:0.4.

[0032] Wherein, the molecular weight of the polypropylene oxide ethylene oxide ether is 350, and the content of ethylene oxide is 78%.

[0033] Wherein, the mass fraction of the glycerol distillation residue is 50%.

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Abstract

The invention relates to the technical field of cement additives, in particular to a cement grinding aid. The cement grinding aid is composed of, by mass, the following components of 10-20 parts of modified triethanolamine, 0.3-0.8 part of polypropylene oxide ethylene oxide ether, 6-18 parts of sodium aliphatate, 12-28 parts of sodium acetate, 2-6 parts of glycerin distilling residues, 2-6 parts of sodium thiosulfate, 0.2-0.5 part of tween, 1-5 parts of ammonium nitrate, 2-6 parts of sodium gluconate and 20-50 parts of deionized water. According to the cement grinding aid, free energy on the surface of powder and surfactants which can prevent the powder from regathering are significantly reduced. By testing the influence of the cement grinding aid on the grinding effect and the cement particle size distribution and testing the macroscopic and microscopic influence of the cement grinding aid on the cement and concrete properties, it is discovered that the cement grinding aid has the advantages of being small in total alkaloid content, low in energy consumption, little in pollution, excellent in property and the like, and an environment-friendly standard is achieved.

Description

technical field [0001] The invention relates to the technical field of cement admixtures, in particular to a cement grinding aid. Background technique [0002] Cement grinding is a necessary process and a key link in cement production. Its energy consumption and electricity consumption account for 30% of the total energy consumption of cement production and more than 70% of the total electricity consumption. At present, the national low-carbon environmental protection requirements are getting higher and higher. Rising raw material and energy prices and fierce competition in the industry have stretched the profitability of cement companies. Therefore, energy conservation and emission reduction, development of low-carbon economy, cost reduction, and improvement of grinding aid performance are urgent problems to be solved by the cement industry. In order to reduce energy consumption and improve grinding efficiency, people usually take the following two measures: 1. Improve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B24/12C04B24/08C04B22/14C04B103/52
Inventor 汤海涛
Owner 汤海涛
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