Cement grinding aid

A technology for cement grinding aids and raw materials, applied in the field of cement grinding aids, can solve problems such as unreasonable formulations and affect cement performance, and achieve the effects of accelerating fluidity, improving fineness and strength, and solving powder agglomeration

Inactive Publication Date: 2017-01-11
北海金匠水泥制品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the unreasonable formula of the existing cement grinding aids, the performance of cement is affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A cement grinding aid, consisting of the following raw materials in parts by weight: 20 parts of triethanolamine, 20 parts of calcium formate, 20 parts of maleic anhydride, 10 parts of sodium lignosulfonate, 1 part of sodium pyrophosphate, 1 part of wood calcium, 1 part of chlorinated hydrocarbon, 5 parts of carboxymethyl cellulose.

Embodiment 2

[0012] A cement grinding aid, consisting of the following raw materials in parts by weight: 30 parts of triethanolamine, 30 parts of calcium formate, 30 parts of maleic anhydride, 15 parts of sodium lignosulfonate, 8 parts of sodium pyrophosphate, 10 parts of wood calcium, 5 parts of chlorinated hydrocarbons, 10 parts of carboxymethyl cellulose.

Embodiment 3

[0014] A cement grinding aid, consisting of the following raw materials in parts by weight: 25 parts of triethanolamine, 25 parts of calcium formate, 25 parts of maleic anhydride, 12 parts of sodium lignosulfonate, 5 parts of sodium pyrophosphate, 5 parts of wood calcium, 3 parts of chlorinated hydrocarbon, 8 parts of carboxymethyl cellulose.

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PUM

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Abstract

The invention discloses a cement grinding aid. The cement grinding aid is prepared from, by weight, 20-30 parts of triethanolamine, 20-30 parts of calcium formate, 20-30 parts of maleic anhydride, 10-15 parts of sodium lignin sulfonate, 1-8 parts of sodium pyrophosphate, 1-10 parts of wood calcium, 1-5 parts of hydrochloric ether and 5-10 parts of carboxymethylcellulose. According to the cement grinding aid, as the carboxymethylcellulose is added into the cement grinding aid formula, the birdnesting phenomenon of powder is obviously solved, the gradation of particles is improved, the micro-powder particle content is increased, the mobility of cement powder is accelerated, the powder is fully subjected to powder grinding, and the fineness and the strength of cement can be improved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cement grinding aid. Background technique [0002] Cement grinding aid is an additive that is added to the mill during the cement grinding process to help the grinding without damaging the performance of cement. It can change the dispersion of materials inside the mill and the flow rate of cement, improve the conveying efficiency of cement, and effectively eliminate the phenomenon of electrostatic adsorption of cement fine particles and ball paste grinding, and can increase the output of the mill by about 20%. , while effectively reducing over-grinding, optimizing cement particle gradation, and reducing cement sieve residue. The composite grinding aid also contains an activator that stimulates the potential activity of cement admixtures such as fly ash and slag powder, so as to increase the strength of cement, increase the amount of admixtures in cement production, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/52
CPCC04B40/0039C04B2103/52C04B24/122C04B24/04C04B24/18C04B22/16C04B24/005C04B24/383
Inventor 刘兴汉
Owner 北海金匠水泥制品有限责任公司
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