Cement grinding aid and preparation method thereof

Abstract

The invention relates to a cement grinding aid and a preparation field thereof, in particular to a cement grinding aid and a preparation method thereof. The cement grinding aid is prepared from, by weight, 10%-20% of alcohol amine compounds, 1%-5% of molasses, 0.5%-3% of sodium sulfate, 5%-15% of sodium chloride, 10%-20% of sodium thiocyanate and 50%-60% of water. The cement grinding aid has the advantages of being lower in comprehensive cost, low in chlorine ion content, good in effect of enhancing strength of cement at the early stage and the later stage and excellent in aid-grinding enhancing capacity on cement; the preparation method has the advantages of being simple in production process, convenient to operate and high in production efficiency.

Description

technical field [0001] The invention relates to the field of cement additives and preparation thereof, more specifically, the invention relates to a cement grinding aid and a preparation method thereof. Background technique [0002] Cement is an indispensable building material in human life and social production. It is widely used and used in large quantities. It is known as "the grain of the construction industry". At present, there is no material at home and abroad that can replace it. Grinding is an important link in the cement production process. With the development of grinding technology, new grinding equipment such as vertical mills and asteroid mills have appeared; however, due to the high manufacturing cost of these equipments and the impact on the finished cement particles The performance impact is unknown, and it cannot be widely used in cement production in the short term. In the process of converting cement clinker into finished cement, most cement producers st...

AI Technical Summary

Problems solved by technology

At present, one of the main raw materials of cement grinding aids is alkanolamine, which accounts for about 80% of the total amount of cement grinding aids, and some cement grinding aids companies add industrial salts to reduce costs, resulting in commercial compounding Cement grinding aids have deficiencies such as industrial salt, excessive chloride ion content, high alkali content, and layered sedimentation, which lead to large fluctuations in product performance and affect the performance of grinding aid enhancement. Therefore, it is necessary to develop a comprehensive cost ratio. Cement grinding aids with low chloride ion content and better grinding aid enhancement, which will help the development of my country's cement grinding aid industry

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