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High-molecular slag grinding aid, and preparation method and application thereof

A polymer and grinding aid technology, which is applied in the field of cement manufacturing, can solve problems such as complex components, unstable grinding aid effect, and general effect of small molecule compound grinding aids, so as to improve the activity index, slag activity index, and The effect of grinding aid efficiency

Inactive Publication Date: 2014-07-23
GUANGZHOU AUSPICIOUS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the effect of small molecule compound grinding aids is average, and the composition is complex, and the grinding aid effect is unstable

Method used

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  • High-molecular slag grinding aid, and preparation method and application thereof
  • High-molecular slag grinding aid, and preparation method and application thereof
  • High-molecular slag grinding aid, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Put 149.0 g of triethanolamine and 1.5 g of p-toluenesulfonic acid into a three-necked flask, then add 107.8 g of maleic anhydride, keep it at 110°C and reflux for 3 hours to prepare triethanolamine maleate (GA).

[0025] (2) Put 94.6 grams of methacrylic acid, 0.9 grams of phosphorous acid, and 0.02 grams of hydroquinone into a four-necked flask, heat to 120oC and slowly add 149.0 grams of triethanolamine dropwise, and react under reflux for 3 hours to obtain methacrylic acid Triethanolamine ester (GZ).

[0026] (3) Add 247.0 grams of GA, 65.1 grams of GZ, 28.8 grams of acrylic acid, and 247.0 grams of water into a three-necked flask. After the temperature is raised to 70oC, 49.4 grams of ammonium persulfate aqueous solution (concentration 10.0%) is uniformly added dropwise. The addition time is 2 hours. After the addition is completed, keep it at 75°C for 2.5 hours, then lower the temperature to 45°C, add NaOH to neutralize and adjust the pH of the system to about 7-8....

Embodiment 2

[0028] (1) Put 149.0 g of triethanolamine and 1.5 g of p-toluenesulfonic acid into a three-necked flask, then add 117.6 g of maleic anhydride, keep the temperature at 110°C and reflux for 3 hours to prepare triethanolamine maleate.

[0029] (2) Put 103.2 grams of methacrylic acid, 1.0 grams of phosphorous acid, and 0.02 grams of hydroquinone into a four-necked flask. The temperature is raised to 120°C and 149.0 grams of triethanolamine are slowly added dropwise. After refluxing for 4 hours, methacrylic acid is obtained. Triethanolamine ester.

[0030] (3) Add 247.0 grams of GA, 65.1 grams of GZ, 28.8 grams of acrylic acid, and 259.0 grams of water into a three-necked flask. After the temperature is raised to 70oC, 49.4 grams of ammonium persulfate aqueous solution (concentration 10.0%) are uniformly added dropwise for 2 hours. After the addition, keep it at 75oC for 3 hours, then lower the temperature to 45℃, add NaOH to neutralize and adjust the pH of the system to about 7-8.

Embodiment 3

[0032] (1) Put 149.0 grams of triethanolamine and 1.5 grams of p-toluenesulfonic acid into a three-necked flask, then add 107.8 grams of maleic anhydride, keep the temperature at 110°C and reflux for 3 hours to prepare triethanolamine maleate.

[0033] (2) Put 94.6 grams of methacrylic acid, 0.9 grams of phosphorous acid, and 0.02 grams of hydroquinone into a four-necked flask, heat to 120°C and slowly add 149.0 grams of triethanolamine dropwise, and react under reflux for 2 hours to obtain methacrylic acid Triethanolamine ester.

[0034] (3) Add 247.0 grams of GA, 65.1 grams of GZ, 57.6 grams of acrylic acid, and 255.0 grams of water into a three-necked flask. After heating to 60oC, add 50.0 grams of ammonium persulfate aqueous solution (concentration 10.0%) uniformly, and the dripping time is 1.5 hours. After the addition is completed, keep it at 70oC for 4 hours, then lower the temperature to 45°C, add NaOH to neutralize and adjust the pH of the system to about 7-8.

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Abstract

The invention discloses a high-molecular slag grinding aid with the general formula shown in the specification. In the general formula, x is a value of 5-8000, and x:y:z is equal to 1:0.1-1:0.1-0.6. The invention aims at providing the high-molecular slag grinding aid capable of effectively shortening slag grinding time and improving slag hydration activity.

Description

Technical field [0001] The invention relates to the technical field of cement manufacturing, in particular to a polymer slag grinding aid, and a preparation method and application thereof. Background technique [0002] Granulated blast furnace slag is the waste slag produced during pig iron smelting. It is mainly composed of calcium silicate and calcium aluminate. The cement concrete mixed with slag powder has low heat of hydration, rapid growth in later strength, excellent impermeability and corrosion resistance. Good for the advantages. [0003] However, the slag contains more glass, which is more difficult to grind than cement clinker. The power consumption of grinding slag is 2 to 3 times that of grinding clinker. Grinding aids have the functions of reducing particle fineness, improving physical and chemical properties and reducing grinding power consumption. At present, the more common technologies at home and abroad are concentrated on small molecule grinding aids (such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/22C08F220/36C08F220/06C04B24/26C04B103/52
Inventor 杨东
Owner GUANGZHOU AUSPICIOUS CHEM
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