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Composite quality-improved grinding aid and preparation method thereof

A technology for quality improvement and grinding aids, which is applied in the field of composite quality improvement grinding aids and their preparation, and composite cement grinding aids, which can solve the problems of cement sulfate corrosion resistance, steel bar corrosion resistance, alkali aggregate reaction, etc. Durability hazards, no problems such as improving cement grinding efficiency and cement fluidity, achieving the effect of improving the grinding environment, solving electrostatic adsorption problems, and good construction performance

Inactive Publication Date: 2014-07-23
张恩源
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of grinding aid can improve the early strength of cement, but it has brought potential harm to the durability of cement such as sulfate corrosion resistance, steel corrosion resistance, and alkali-aggregate reaction resistance, and this type of grinding aid does not improve cement grinding. Function of Efficiency and Cement Fluidity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention is described below in conjunction with specific embodiment:

[0018] Now take the production of 1000 kg compound quality improved grinding aid as an example:

[0019] Use a mixing pot with a capacity of about 3000 kg. Be sure to wash the stirring pot with water before production; then add 498 kg of water to the stirring pot, add 140 kg of polycarboxylate, and stir until the polycarboxylate is completely Dissolve; then add 50 kg of glacial acetic acid and stir until completely dissolved, then add 170 kg of alcohol amine activator, 140 kg of silicone modified polyacrylate, and stir for about 35 minutes; finally add 2 kg of anti-corrosion agent, stir evenly.

[0020] use

[0021] This product is especially recommended for the grinding of the following materials:

[0022] 1. Ordinary cement (especially slag and fly ash as composite materials);

[0023] 2. Composite cement;

[0024] performance

[0025] This product is a very effective surfacta...

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PUM

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Abstract

The invention discloses a composite quality-improved grinding aid, which is especially design for assisting the grinding of common silicate cement, and belongs to the field of grinding assistance in the cement production. The grinding aid is composed of the following raw materials: an alcamines activating agent, organic silicon modified polyacrylate, polycarboxylate, glacial acetic acid, water, and an antiseptic. The preparation method of the grinding aid comprises the following steps: washing a stirring boiler with water before the production, adding water into the stirring boiler, adding polycarboxylate, stirring until the polycarboxylate is totally dissolved, adding glacial acetic acid, stirring until the glacial acetic acid is totally dissolved, then orderly adding an alcamines activating agent and organic silicon modified polyacrylate, stirring for 30 to 40 minutes, finally adding an antiseptic, and evenly stirring so as to obtain the grinding aid. The grinding aid can improve the endurance and corrosion resistance of concrete cement products, which have the advantages of more stable volume, lower hydration heat, and better construction property. After the grinding aid is mixed into cement, the average particle size of the cement is prominently reduced, the content of fine particles is prominently increased, the particle shape is basically not changed, and the roundness of the particles is increased.

Description

technical field [0001] The invention relates to a composite quality-improving grinding aid and a preparation method thereof, belonging to the field of cement production grinding aids, and is a composite cement grinding aid specially designed for ordinary Portland cement grinding aids. Background technique [0002] In the cement production process, when the cement particles are ground to an average particle size of 14 μm or less, they will agglomerate due to molecular force and electrostatic force generated by the breaking of Si-O and Ca-O bonds during the crushing process, adhering to the steel ball and lining. On the plate, the phenomenon of wrapping balls and forging appears, which reduces the grinding efficiency of the mill. In order to overcome the unfavorable factors in the cement grinding process, cement grinding aids are usually added to the cement grinding process to improve production efficiency. At present, the early strength of cement is enhanced by adding too mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/40C04B103/52
Inventor 张恩源
Owner 张恩源