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A kind of late significantly enhanced cement grinding aid and preparation method thereof

A cement grinding aid and enhanced technology, which is applied in the field of cement grinding aids, can solve the problems of unsatisfactory enhancement effect and insufficient cement enhancement effect, and achieve the effect of reducing water consumption

Inactive Publication Date: 2015-10-14
MAANSHAN CHINASEA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the fact that most of the cement grinding aids on the market are not obvious enough to strengthen the cement, especially the late strengthening effect is not ideal, and a large amount of chloride ions are brought into the cement. In view of this, the present invention provides a significantly enhanced cement Grinding aid and preparation method thereof can obviously improve cement grinding efficiency, reduce energy consumption, and can effectively improve cement 3-day and 28-day compressive strength

Method used

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  • A kind of late significantly enhanced cement grinding aid and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Each component was weighed according to the following mass percentages: 30% alcohol amine composition, 5% anhydrous sodium sulfate, 2% acetic acid, 15% sodium gluconate, 10% glycerol, 5% molasses, and 33% water. The alcohol amine composition is a mixture of diethanol monoisopropanolamine and polyethylene glycol at a mass ratio of 1:1.

[0020] First add accurately weighed water into the stirring tank, then pour accurately weighed anhydrous sodium sulfate and sodium gluconate into the stirring tank in turn at normal temperature and pressure, and fully stir for 30 minutes, then combine accurately weighed alcohol amines Add acetic acid, glycerin, and molasses into the stirring tank in turn and stir for 30 minutes, then add acetic acid and stir for 30 minutes, then filter to obtain the finished product, number 1#.

Embodiment 2

[0022] Each component is weighed according to the following mass percentage: 20% alcoholamine composition, 5% anhydrous sodium sulfate, 2% acetic acid, 19% sodium gluconate, 15% glycerol, 5% molasses, 34% water, all The alcohol amine composition is a mixture of diethanol monoisopropanolamine and polyethylene glycol at a mass ratio of 1:1.

[0023] First add accurately weighed water into the stirring tank, then pour accurately weighed anhydrous sodium sulfate and sodium gluconate into the stirring tank in turn at normal temperature and pressure, and fully stir for 30 minutes, then combine accurately weighed alcohol amines Add acetic acid, glycerin, and molasses into a stirring tank in turn and stir for 30 minutes. Finally, add acetic acid and stir for 30 minutes. Filter to obtain the finished product, number 2#.

Embodiment 3

[0025] Each component was weighed according to the following mass percentages: 10% alcohol amine composition, 10% anhydrous sodium sulfate, 3% acetic acid, 26% sodium gluconate, 10% glycerol, 10% molasses, 31% water. The alcohol amine composition is a mixture of diethanol monoisopropanolamine and polyethylene glycol at a mass ratio of 1:1.

[0026] First add accurately weighed water into the stirring tank, then pour accurately weighed anhydrous sodium sulfate and sodium gluconate into the stirring tank in turn at normal temperature and pressure, and fully stir for 30 minutes, then combine accurately weighed alcohol amines Pour the mixture, glycerin and molasses into the stirring tank in turn and stir for 30 minutes, then add acetic acid and stir for 30 minutes, then filter to get the finished product, number 3#.

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Abstract

The invention discloses a later-period obviously-enhanced cement grinding aid and a preparation method thereof, belonging to the field of cement preparation. The grinding aid comprises the following components in percentage by mass: 10-40% of alkylol amine composition, 5-10% of anhydrous sodium sulfate, 1-3% of acetic acid, 10-30% of sodium gluconate, 5-20% of glycerol, 5-20% of molasses and the balance of water. The preparation method comprises the following steps: proportionally mixing the alkylol amine composition, anhydrous sodium sulfate, acetic acid, sodium gluconate, glycerol, molasses and water, and sufficiently stirring at normal temperature under atmospheric pressure. The cement grinding aid is suitable for Portland cement, composite cement, slag cement and various other cement species, and is especially suitable for cement with insufficient later strength or heavily-doped limestone cement; and the cement grinding aid can obviously enhance the cement grinding efficiency, lower the energy consumption, effectively enhance the 3-day and 28-day compression strength of cement and especially enhance the 28-day compression strength by 5-10 MPa.

Description

technical field [0001] The invention relates to cement grinding aids, more specifically, to a late-stage significantly enhanced cement grinding aid and a preparation method thereof. technical background [0002] Cement grinding aids can improve the cement grinding process, improve grinding efficiency, and reduce energy consumption per unit of product without changing the cement production process and equipment; at the same time, as surface active substances, grinding aids can improve the hydration environment of cement , improve cement performance. [0003] At present, most domestic cement enterprises are already using cement grinding aids. Through field visits to a large number of cement enterprises, it is found that some enterprises have good strength of cement clinker in 3 days, but the strength of 28 days is not ideal. There is a shortage of active admixtures for cement production, such as water slag, and limestone is abundant. In this way, the later significantly enha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12C04B103/52
Inventor 俞光海郭兆雷佘祥海金文娟
Owner MAANSHAN CHINASEA NEW MATERIAL
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