Preparation method and usage method for slag grinding aid mother liquor

Abstract

The invention relates to a preparation method for slag grinding aid mother liquor. The preparation method comprises the following steps that 1, amine oxide type derivatives are prepared; 2, quaternary ammonium salt type derivatives are prepared; 3, 5-12 parts of amine oxide type derivative solutions, 8-12 parts of quaternary ammonium salt type derivative solutions, 5-10 parts of glycerin, 5-10 parts of molasses and 56-77 parts of deionized water are mixed and stirred, and then the slag grinding aid mother liquor is obtained. The mixing amount of the slag grinding aid mother liquor accounts for 0.05-0.12% of the mass of slag. The preparation method and usage method for the slag grinding aid mother liquor have the following advantages that the slag grinding efficiency is significantly improved, and the granule gradation of mineral powder is optimized; the cost is low; the effective mixing amount of the slag grinding aid mother liquor in a slag system is low, the mixing amount sensitivity is little, and harmful influences on the mineral powder quality cannot be generated; the preparation method is simple and good in repeatability and stability.

Description

technical field [0001] The invention belongs to the technical field of slag grinding aids, and in particular relates to a method for preparing and using a mother liquid of slag grinding aids. Background technique [0002] Granulated blast furnace slag, referred to as slag for short, is the waste slag produced when iron and steel enterprises smelt pig iron. With the vigorous development of my country's iron and steel industry, tens of millions of tons of slag or even more are produced every year. A large amount of accumulated slag not only occupies a large amount of land, but also causes serious environmental pollution. Therefore, the effective utilization of slag can not only protect the environment, but also utilize waste, save energy and reduce emissions. It echoes the theme of "developing circular economy, building a conservation-minded society and an environment-friendly society" currently advocated by our country. [0003] As a new green and environmentally friendly ...

AI Technical Summary

Problems solved by technology

Completely copy the cement grinding aid for slag grinding, but the grinding performance of clinker and slag is quite different, so they cannot be compared

Chinese patent application CN102180616A uses a mixture of acetic acid and triethanolamine when grinding limestone cement, but acetic acid is a monobasic weak acid with low neutralization activity

Chinese patent application CN103936924A prepares polymer type slag grinding aid, its preparation method is complicated, and the esterification rate cannot be effectively controlled

However, under high temperature conditions, triethanolamine is a polyol with many esterification products and unpredictable structure, which can form monoesterification, diesterification or triesterification, which is a kind of mixture. Secondly, the energy consumption is high under high temperature conditions. , may cause side reactions of triethanolamine, such as dehydration

Although the esterification reaction will change the polarity of the substance, it will destroy the hydroxyl group with the best grinding effect.

[0007] At present, many companies use cement grinding aids directly in the grinding of slag, but due to the different nature of clinker and slag, the effect is not very obvious

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