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Cement grinding aid, preparation method therefor and application thereof

A cement grinding aid and cement technology, which is applied in the field of chemical building materials, can solve the problems of cement grinding aid formula composition change, chemical complexation addition reaction, and reducing enterprise benefits, etc., to achieve high fluidity and good surface dispersion , good compatibility effect

Inactive Publication Date: 2016-03-02
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual situation is: the current cement grinding aids are all produced and prepared by the cement grinding aid enterprise and transported to the cement production site through filling. In the whole process of continuous cement production, according to the amount of materials in the cement mill It is required to add the cement grinding aid to the cement mill quantitatively by controlling the delivery pump. When the working state of the cement mill in the cement enterprise or the various mineral components of the cement change, the traditional preparation and use of this grinding aid is very difficult. It is difficult to adjust the formula of cement grinding aids in a timely manner; in addition, because cement grinding aids are formed by physically mixing two or more raw material liquids in a certain proportion, a long time will not only cause the stratification of raw material liquids, but also easily produce chemical complexation and Addition reaction, resulting in changes in the composition of cement grinding aids
Based on the above two reasons, when the current cement grinding aid products are used in the cement production process, the effect is unstable, which seriously affects the product quality and reduces the benefit of the enterprise.

Method used

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  • Cement grinding aid, preparation method therefor and application thereof
  • Cement grinding aid, preparation method therefor and application thereof
  • Cement grinding aid, preparation method therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare cement grinding aid of the present invention according to the following steps:

[0026] Step 1. Treat 330 parts of ultrapure water with a conductivity of 0.01Mv for 5 minutes through a particle accelerator and then inject it into an anion exchange column for adsorption for 10 minutes. The anion exchange column is eluted with strong acid and weak base salt, and the eluent Add it into the reaction kettle, start the stirring motor of the reaction kettle, the speed of the mixer is 80 rpm, add 2 parts of trinitrom-phenylenediamine, 3 parts of benzylethylaniline, and 2 parts of terpene phenol resin in turn, and start the reaction kettle High-pressure steam switch, high-temperature and high-pressure steam is passed into the heat exchanger, so that the temperature in the reactor rises to 60°C, and the temperature is kept for 1 hour;

[0027] Step 2, take 9 parts of fly ash, 6 parts of titanium dioxide and 2 parts of silicon dioxide, mix and grind to a particle size of 4...

Embodiment 2

[0031] Prepare cement grinding aid of the present invention according to the following steps:

[0032] Step 1. Treat 990 parts of ultrapure water with a conductivity of 0.05Mv for 10 minutes through a particle accelerator and inject it into an anion exchange column for adsorption for 20 minutes. The anion exchange column is eluted with strong acid and weak base salt, and the eluent Add it into the reaction kettle, start the stirring motor of the reaction kettle, the speed of the mixer is 120 rpm, add 7 parts of trinitrom-phenylenediamine, 7 parts of benzylethylaniline, and 4 parts of terpene phenol resin in sequence, and start the reaction kettle High-pressure steam switch, high-temperature and high-pressure steam is passed into the heat exchanger, so that the temperature in the reactor rises to 80 ° C, and the temperature is kept for 2 hours;

[0033] Step 2, take 21 parts of fly ash, 8 parts of titanium dioxide and 5 parts of silicon dioxide, mix and grind to a particle size...

Embodiment 3

[0037] Prepare cement grinding aid of the present invention according to the following steps:

[0038] Step 1, 730 parts of ultrapure water with a conductivity of 0.035Mv was treated by a particle accelerator for 8 minutes and then injected into an anion exchange column for adsorption for 15 minutes. The anion exchange column was eluted with strong acid and weak base salt, and the eluent Add it into the reaction kettle, start the stirring motor of the reaction kettle, the speed of the mixer is 90 rpm, add 5 parts of trinitrom-phenylenediamine, 5 parts of benzylethylaniline, and 3 parts of terpene phenol resin in sequence, and start the reaction kettle High-pressure steam switch, high-temperature and high-pressure steam is passed into the heat exchanger, so that the temperature in the reactor rises to 70 ° C, and the temperature is kept for 1.5 hours;

[0039] Step 2, take 10 parts of fly ash, 7 parts of titanium dioxide and 4 parts of silicon dioxide, mix and grind to a partic...

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Abstract

The present invention discloses a cement grinding aid, a preparation method therefor and application thereof. The cement grinding aid comprises the following components in parts by weight: 2-7 parts of trinitrometaphenylidyne triamine, 3-7 parts of benzyl ethylaniline, 2-4 parts of terpene phenolic resin, 9-21 parts of fly-ash, 6-8 parts of titanium dioxide, 2-5 parts of silica, 4-8 parts of methacrylate acid, 2-7 parts of polylactic acid-trimethylene carbonate, 5-9 parts of polyvinylidene, 10-50 parts of triethanolamine sulfate, 2-5 parts of amide glutaric acid amine and 6-12 parts of phthalate. According to the method disclosed by the present invention, a surface of the cement grinding aid has good dispersibility and high fluidity, so that strength and a degree of dispersion and dissociation of cement can be improved.

Description

technical field [0001] The invention belongs to the field of chemical building materials, in particular to a cement grinding aid and its preparation method and application. Background technique [0002] In the cement production process, cement grinding aids have been widely used in the grinding of cement materials. As a process admixture in the cement production process, cement grinding aids can not only improve the efficiency of cement grinding in the cement production process (abbreviated as improving production), and by changing the hydration rate of cement, the 3-day and 28-day compressive strength of cement (referred to as strengthening) can be improved. Adaptability, while the strengthening effect mainly depends on the interaction between the various substances that make up the grinding aid and the various mineral components of the cement. It depends on the mineral composition of the cement, which requires that the formula of the cement grinding aid should not only be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/28C04B24/12C04B22/06C04B103/52
Inventor 梁峙梁骁
Owner XUZHOU UNIV OF TECH
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