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Cement grinding aid and production method thereof

A cement grinding aid and acid solvent technology, applied in the field of cement adjuvant preparations, can solve the problems of poor stability, unsatisfactory cement setting time and compressive strength, etc., and achieve excellent flow performance, increase production per hour, and good performance. Effect

Pending Publication Date: 2018-05-08
河南金润源建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of poor final product stability and unsatisfactory setting time and compressive strength of cement introduced into cement in the preparation of existing cement grinding aids, and provides a cement grinding aid and a production method thereof

Method used

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  • Cement grinding aid and production method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Make cement grinding aid based on following proportioning by weight:

[0030] First put 30 parts of polyols, 5 parts of calcium lignosulfonate and 1 part of 50% hydrochloric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 5 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 6, then add 5 parts of triethanolamine and 5 parts of diethanol monoisopropanolamine to the reaction kettle, and let it stand for 2 hours, finally import the mixture after standing still from the reaction kettle into the stirring tank, add 60 parts of water and 10 parts of molasses were stirred and stirred for 1 hour to obtain a cement grinding aid.

Embodiment 2

[0032] Make cement grinding aid based on following proportioning by weight:

[0033] First put 60 parts of polyols, 10 parts of calcium lignosulfonate and 4 parts of 50% sulfuric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 10 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 8, then add 10 parts of triethanolamine and 10 parts of diethanol monoisopropanolamine to the reactor, and let it stand for 3 hours, and finally import the mixture after standing still from the reactor to the stirring tank, add 80 parts of water and 20 parts of molasses were stirred together, and after 1.5 hours of stirring, a cement grinding aid was prepared.

Embodiment 3

[0035] Make cement grinding aid based on following proportioning by weight:

[0036] First put 45 parts of polyols, 7 parts of calcium lignosulfonate and 2.5 parts of 50% hydrochloric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 8 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 7, then add 7 parts of triethanolamine and 8 parts of diethanol monoisopropanolamine in the reactor, and let stand for 2.5h, finally import the mixture after standing from the reactor to the stirring tank, 70 parts of water and 15 parts of molasses were added and stirred, and the cement grinding aid was obtained after stirring for 1 hour.

[0037] The cement grinding aids prepared by equal weight embodiment 1, embodiment 2 and embodiment 3 are marked as the first group, the second group and the third group respectively, and the existing commercially available grinding aids of equal weight are marked as The fourth group, its formula is calculat...

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Abstract

The invention relates to the field of cement aid preparations and discloses a cement grinding aid and a production method thereof. The cement grinding aid is technically characterized by comprising polyhydric alcohols, calcium lignosulphonate, an acid solvent, alkali lignin, triethanolamine, diethanolisopropanolamine, water and auxiliary materials. The production method comprises the following steps: mixing the polyhydric alcohols, the calcium lignosulphonate and the acid solvent in a reaction kettle, putting the alkali lignin into the reaction kettle, adjusting the pH value of the mixture, further putting triethanolamine and diethanolisopropanolamine into the reaction kettle, leaving to stand, leading the mixture obtained after standing into a stirring tank from the reaction kettle, adding water and auxiliary materials, and stirring, thereby obtaining the cement grinding aid after stirring is completed. By adopting the cement grinding aid, the problems that a conventional cement grinding aid is poor in final product stability, and not ideal in cement curing time and pressure resistance after being introduced into cement, are solved.

Description

technical field [0001] The invention relates to the field of cement auxiliary preparations, in particular to a cement grinding aid and a production method thereof. Background technique [0002] Cement is usually a gray powder. After adding an appropriate amount of water, it becomes a plastic slurry, which can firmly bond materials such as sand and stone together. Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It is used in cement During the grinding process of materials, adding a small amount of grinding aid can significantly improve the grinding efficiency or reduce energy consumption, and significantly increase the output and various technical indicators of the cement table without damaging the performance of the cement itself. As a chemical activator, the grinding aid can improve the distribution of cement particles and stimulate the hydration power, thereby improving the early strength and later strength of cement....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B103/52
CPCC04B40/0046C04B2103/52C04B24/02C04B24/18C04B22/122C04B24/24C04B24/122C04B22/002C04B24/10C04B22/141
Inventor 苗贞才
Owner 河南金润源建材科技有限公司
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