High-moisture admixture cement grinding aid and preparation method thereof

Abstract

The invention discloses a high-moisture admixture cement grinding aid. Raw materials of the high-moisture admixture cement grinding aid comprise, by mass, 40-55% of a polyol grinding aid mother liquor, 0.01-0.5% of acrylic acid, 1-10% of ammonium sulfate, 0.02-0.05% of sodium dodecyl benzene sulfonate, 2-5% of triethanolamine, 1-5% of a sugarcane sugar residue liquid, and the balance water, wherein the total amount of the raw materials is 100%. A preparation method of the polyol grinding aid mother liquor comprises the following steps: adding 2 parts of maleic anhydride and 1 part of polyol into a reaction pot, uniformly mixing, and reacting at 100DEG C for 3h to synthesize the polyol grinding aid mother liquor. The grinding aid mother liquor synthesized by using maleic anhydride and polyol substitutes expensive triethanolamine, so the fluidity of the high-moisture material is substantially increased, the grinding efficiency of a grinding machine is improved, and the output per machine per hour is improved; and the above dispersant sodium dodecyl benzene sulfonate with high adsorption strength can obviously solve the powder agglomeration phenomenon, improve the particle graduation of cement and increase the micro-powder particle content. Ammonium sulfate contained in the grinding aid can improve the strength of cement in all stages.

Description

technical field [0001] The invention relates to a high-moisture mixed material cement grinding aid and a preparation method thereof, belonging to the technical field of grinding aids. Background technique [0002] With the continuous acceleration of industrialization and informatization, the discharge of industrial waste continues to increase. According to relevant statistics, my country produces 784 million tons of industrial waste every year. There are mainly fuel slag (fly ash, coal gangue, slag, etc.), metallurgical slag (blast furnace slag, steel slag, manganese slag, etc.), chemical slag (alkali slag, calcium carbide slag, pyrite slag, etc.), these solid wastes are mostly Contains heavy metal elements that have a serious impact on human beings and the environment on which they live. How to dispose of these wastes scientifically and achieve harmless and resourceful use is the focus of attention of the whole society. my country is a big cement country, and the cement i...

AI Technical Summary

Problems solved by technology

[0007] Objective: In order to solve the deficiencies of the existing technology, we have developed a series of grinding aids for different mixed materials one by one, so as to solve the problems caused by different mixed materials such as high-moisture fly ash, water slag, coal gangue, manganese slag, phosphorus slag, etc. The problems of reduced output, full grinding, and reduced strength of each age when the cement mill is running, solve the problems of low output, high cost and limited utilization of some mixed materials caused by high moisture content of the mixed material. The invention provides a high-moisture mixed material. Material cement grinding aid and its preparation method, so that some high-moisture fly ash, slag and other mixed materials can be directly put into the grinding process without drying procedures, and the cost can be saved without affecting the quality of cement or even improving the strength of cement and reduce air pollution

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