A chlorine-free high-efficiency cement grinding aid

Abstract

The invention discloses an efficient chloride-free cement grinding aid. The efficient chloride-free cement grinding aid is prepared from the following ingredients in parts by weight: 10-12 parts of polyether, 6-8 parts of diacetal monoisopropanolamine, 3-5 parts of triethanolamine, 2-4 parts of sodium carboxymethyl cellulose, 1-2 parts of sodium lignosulfonate and 8-12 parts of papermaking black liquor. Compared with the products in the prior art, the efficient chloride-free cement grinding aid has the advantage that the 3-day compressive strength and 28-day compressive strength can be obviously improved under the condition of different dosages.

Description

technical field [0001] The invention belongs to the technical field of cement production and processing, and in particular relates to a chlorine-free high-efficiency cement grinding aid. Background technique [0002] my country is a big cement producing country, and its cement output ranks first in the world for many years. However, the key problem restricting the development of my country's cement industry is the high energy consumption and low utilization rate in the cement grinding stage. The cement industry is an industry with high energy consumption and high pollution, and a key industry for energy conservation and emission reduction. To solve such problems, in addition to improving equipment and technical processes, it is an effective way to add a small amount of cement grinding aids in the grinding process. [0003] Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It can significantly increase the output of ceme...

AI Technical Summary

Problems solved by technology

[0005] The grinding aids currently used in practice mainly have the following deficiencies. One is that the substances such as chloride salts contained have adverse effects on cement performance; The adaptability is narrow and the volatility is large

The above-mentioned deficiencies greatly affect the actual use effect of grinding aids, which limits the application of grinding aids to a certain extent.

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