Cement grinding aid reinforcing agent and preparation method thereof

Abstract

The invention discloses a preparation method of a cement grinding aid reinforcing agent, which comprises the following steps: adding first formaldehyde to urea in water in the presence of a catalyst; condensing the product of the addition reaction, sodium sulfanilate and a second formaldehyde; and obtaining the cement grinding aid reinforcing agent. Designed on the basis of a molecular structure, the preparation method provided by the invention bonds reinforcing and grinding aiding active functional groups into a molecular chain and synthesizes the homogenous material which is insusceptible to temperature, pH value and the like and has stable performance by chemical reactions. Experiment results indicate the method does not need a triethanolamine raw material and that the prepared cement grinding aid reinforcing agent is doped in small amount and has obvious grinding aiding function and stable performance.

Description

technical field [0001] The invention relates to the technical field of cement admixtures, in particular to a cement grinding aid enhancer and a preparation method thereof. Background technique [0002] Energy saving and consumption reduction and improvement of cement quality are long-term and important tasks of my country's cement industry. Among them, the crushing and powder links in the cement production process are the main factors affecting cement quality and energy consumption in the whole production process. For example, in the cement grinding process In the process, when the fineness of cement increases, the fine particles of cement tend to aggregate, which leads to a sharp decline in the grinding efficiency of cement. Cement grinding aid enhancer is an additive that has grinding aid without damaging the performance of cement. The promotion and selection of suitable cement grinding aid enhancer can greatly improve the efficiency of cement powder. Further, the cement g...

AI Technical Summary

Problems solved by technology

However, since the cement grinding aid enhancer reported above is prepared by a simple physical mixing method, the performance of the cement grinding aid enhancer is unstable, and phenomena such as precipitation and deterioration are prone to occur in practical applications; secondly, the above cement grinding aid enhancer The triethanolamine used in the process is a downstream product of the petrochemical industry, and the price is relatively high, which makes the cost of cement grinding aids higher, and at the same time causes the cement grinding aids to be greatly affected by the cement production process

[0004] In recent years, major manufacturers and institutions of higher learning have continuously organized professionals to study synthetic cement grinding aids, with the aim of combining various functional groups into the polymer molecular chain structure, thereby solving the problem of compound cement grinding aid enhancement. There are problems such as unstable performance of the agent

Images