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A kind of cement grinding aid and preparation method thereof

A cement grinding aid and temperature control technology, which is applied in the field of cement admixtures, can solve the problems of cement grinding aids, such as obstacles to earn foreign exchange and increase efficiency, high price of raw materials, and insufficient compatibility of concrete admixtures. Wide and good grinding effect

Active Publication Date: 2017-02-01
湖南润攸科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the cement grinding aids mentioned in almost all textbooks and Internet materials are basically made of triethanolamine and triisopropanolamine as the main raw materials. The effect is not bad, but there are deficiencies in the compatibility with concrete admixtures. In addition, the high price of its preparation raw materials restricts the production cost control of cement grinding aids, and creates obstacles for cement grinding aid companies to earn foreign exchange and increase efficiency.

Method used

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  • A kind of cement grinding aid and preparation method thereof
  • A kind of cement grinding aid and preparation method thereof
  • A kind of cement grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of cement grinding aid: add 10 mass parts of water, 55 mass parts of diethanol monoisopropanolamine, 10 mass parts of molasses, 60 mass parts of modified triethanolamine in the reactor, and increase the temperature in the reactor to Control the temperature at 90°C, react with rapid stirring for 2 hours, and then keep it warm for 1 hour to make cement grinding aid.

[0018] According to the mass ratio, 15% of the cement grinding aid prepared under the conditions of the above preparation method, 10% of glycerin, 20% of molasses, and 55% of water are selected; the materials are respectively added to the mixer according to the above ratio and stirred evenly. The mixing ratio is 1000 g / t cement.

Embodiment 2

[0020] Preparation of cement grinding aid: add 12 mass parts of water, 50 mass parts of diethanol monoisopropanolamine, 8 mass parts of molasses, 40 mass parts of modified triethanolamine in the reactor, and increase the temperature in the reactor to Control the temperature at 90°C, react with rapid stirring for 2 hours, and then keep it warm for 1 hour to make cement grinding aid.

[0021] According to the mass ratio, 33% of the cement grinding aid prepared under the conditions of the above preparation method, 18% of glycerin, 12% of molasses, and 37% of water were selected; the materials were added into the mixer according to the above ratio and stirred evenly. The mixing ratio is 500 g / t cement.

Embodiment 3

[0023] Preparation of cement grinding aid: add 10 mass parts of water, 40 mass parts of diethanol monoisopropanolamine, 5 mass parts of molasses, and 35 mass parts of modified triethanolamine in the reactor, and increase the temperature in the reactor to Control the temperature at 90°C, react with rapid stirring for 2 hours, and then keep it warm for 1 hour to make cement grinding aid.

[0024] According to the mass ratio, 49% of the cement grinding aid prepared under the conditions of the above preparation method, 20% of diethylene glycol, 5% of molasses, and 26% of water were selected, and the materials were added to the mixer according to the above ratio and stirred evenly. The mixing ratio is 300 g / t cement.

[0025] Ingredients comparison group A:

[0026] 8% triethanolamine, 7% triisopropanolamine, 10% glycerin, 20% molasses, 55% water; the mixing ratio is 1000 g / t cement.

[0027] 15% of triethanolamine, 18% of triisopropanolamine, 18% of glycerin, 12% of molasses, an...

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Abstract

The invention discloses a novel cement grinding aid and a preparation method thereof. The novel cement grinding aid is prepared from water, diethanol amine isopropyl alcohol, molasses and modified triethanolamine. The method comprises the following steps: adding 10-12 parts by mass of water, 40-55 parts by mass of diethanol amine isopropyl alcohol, 5-10 parts by mass of molasses and 35-60 parts by mass of modified triethanolamine to a reaction kettle during preparation; controlling the temperature in the reaction kettle at 90 DEG C, and quickly agitating and reacting for 2 hours, and then carrying out heat preservation for an hour, so as to form the product. By adopting the novel cement grinding aid and the preparation method thereof, the grinding efficiency of a mill system can be obviously improved, and the novel cement grinding aid has a strong chemical excitation effect, induces hydration reaction of cement, improves strength of the cement of each age, has good compatibility with a concrete admixture, and is an optimal material for reducing the production cost of the cement grinding aid by a cement grinding aid enterprise.

Description

technical field [0001] The invention relates to the field of cement admixtures, in particular to a cement grinding aid and its preparation method and application. Background technique [0002] When cement production enterprises produce cement, in order to solve the problems of high grinding power consumption, low grinding efficiency, improve cement strength and other physical properties, increase the amount of mixed materials, and reduce costs in the cement production process, they often add cement grinding aids. agent. [0003] However, the cement grinding aids mentioned in almost all textbooks and Internet materials are basically made of triethanolamine and triisopropanolamine as the main raw materials. The effect is not bad, but there are deficiencies in the compatibility with concrete admixtures. In addition, the high price of its preparation raw materials restricts the production cost control of cement grinding aids, and creates obstacles for cement grinding aid compan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12C04B103/52
Inventor 唐智荣鲁昌宝邓程鸿
Owner 湖南润攸科技发展有限公司
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