Cement liquid grinding aid and preparation method thereof

A grinding aid and liquid technology, applied in the field of cement liquid grinding aid and its preparation, can solve the problem that cement fineness and specific surface area need to be improved urgently, cement grinding energy consumption is not significantly improved, and strength cannot be significantly improved, etc. problems, to achieve the effect of improving grinding aid, improving fineness and specific surface area, and reducing energy consumption

Active Publication Date: 2011-08-17
北京金隅水泥节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1. The grinding effect is unstable, and the fineness and specific surface area of ​​the ground cement need to be improved urgently;
[0012] 2. It has an impact on the application performance of cement, especially on the strength of cement at various ages, so that its strength cannot be significantly improved;
[0013] 3. The energy consumption improvement of cement grinding is not obvious

Method used

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  • Cement liquid grinding aid and preparation method thereof
  • Cement liquid grinding aid and preparation method thereof
  • Cement liquid grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: used cement liquid grinding aid is made up of triethanolamine, triisopropanolamine, ethylene glycol, adipate, polycarboxylic acid, molasses and water, and the weight percent of each component is as follows: triethanolamine 15%, triisopropanolamine 15%, ethylene glycol 10%, adipate 1%, polycarboxylic acid 20%, molasses 5%, and the rest is water. The water used therein is common tap water, and other components are all commercially available. The preparation steps are as follows: add ordinary tap water into the reaction kettle; add molasses, adipate, triethanolamine, triisopropanolamine, ethylene glycol and polycarboxylic acid to the reaction kettle sequentially while stirring; add all components After that, stir for 15 minutes; obtain cement liquid grinding aid.

Embodiment 2

[0036] Embodiment 2: used cement liquid grinding aid is made up of triethanolamine, triisopropanolamine, ethylene glycol, ethylene oxide propylene oxide copolymer, adipate, polycarboxylic acid, molasses and water, The weight percent of each component is as follows: triethanolamine 30%, triisopropanolamine 10%, ethylene glycol 5%, ethylene oxide propylene oxide copolymer 2%, adipate 1%, polycarboxylic acid 5% %, molasses 5%, and the rest is water. The water used therein is common tap water, and other components are all commercially available. The preparation steps are: add ordinary tap water into the reaction kettle; add molasses, adipate, triethanolamine, triisopropanolamine, ethylene glycol and polycarboxylic acid to the reaction kettle sequentially while stirring; add all the components Finally, stir for 15 minutes; the grinding aid liquid obtained after stirring and the ethylene oxide propylene oxide copolymer are emulsified and dispersed through an emulsifier; a highly un...

Embodiment 3

[0037] Embodiment 3: used cement liquid grinding aid is made up of triethanolamine, triisopropanolamine, ethylene glycol, ethylene oxide propylene oxide copolymer, adipate, polycarboxylic acid, molasses and water etc., The weight percentages of each component are as follows: 15% triethanolamine, 25% triisopropanolamine, 3% ethylene glycol, 3% ethylene oxide propylene oxide copolymer, 2% adipate, 5% polycarboxylic acid , molasses 5%, and the rest is water. The water used therein is common tap water, and other components are all commercially available. The preparation steps are the same as in Example 2.

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Abstract

The invention provides a liquid cement grinding aid, which mainly contains the following components in percentage by weight: 5-30% of triethanolamine, 5-30% of triisopropanolamine, 5-30% of glycol, 1-5% of adipate, 2-15% of ethylene oxide-propylene oxide copolymer, 5-30% of polycarboxylic acid, 5-30% of molasses and the balance of water. The cement liquid grinding aid of the invention, in which the ethylene oxide-propylene oxide copolymer having a densifying effect on cement concrete is in particular added, has the advantages of obviously improving the fineness and the specific surface area of the cement product, improving the grinding aid effect and improving the strength of a cement test block in each age; in addition, compared with the liquid grinding aid of the prior art, the cement liquid grinding aid can reduce the energy consumption while the same fineness and specific surface area are obtained. The invention also provides a method for preparing the cement liquid grinding aid.

Description

technical field [0001] The invention relates to the field of cement production, in particular to a cement liquid grinding aid and a preparation method thereof Background technique [0002] Cement grinding is the last process of cement production, which is the process of micronizing cement by mechanical means. During this process, through the collision and extrusion of the steel balls, the chemical bonds inside the cement ingredients are broken and decomposed, and a charged interface is formed at the fractured part, so it is easy to produce paste grinding and reduce the efficiency of cement grinding. [0003] It has been found that if an appropriate amount of grinding aid is added to the production of cement grinding, the surface activity and charge dispersion of the grinding aid can be used to modify the surface of the cement batching particles. Improve the fineness of cement and increase the output of cement; or increase the specific surface area of ​​cement, optimize the ...

Claims

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Application Information

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IPC IPC(8): C04B24/26C04B103/52
CPCC04B40/0039
Inventor 张增寿赵虎奎李方忠朱立新刘波沣王振华陈晓红
Owner 北京金隅水泥节能科技有限公司
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