A kind of liquid cement grinding aid for vertical mill

Abstract

The invention provides a liquid cement grinding aid for vertical grinding. The liquid cement grinding aid for the vertical grinding is prepared from 20%-30% of alcohol-amine salt of phthalic acid, 10%-15% of styrene-maleic anhydride copolymers, 10%-15% of tripolyglycerol, 10%-15% of glucose, 10%-15% of cane molasses, 1% of sodium hydroxide and the balance water. The liquid cement grinding aid for the vertical grinding has the advantages that due to the fact that the working condition of a cement vertical grinding machine is the same, and the various cement raw materials are the same, after the cement grinding aid is added, the particle size gradation of the cement is improved, the degree of sphericity of the cement product particles is improved, standard consistency water consumption of cement products is reduced, the adaptability between the cement products and concrete additives is improved, and the cement strength is slightly improved.

Description

technical field [0001] The invention relates to the cement manufacturing field in the building material industry, in particular to a liquid cement grinding aid for vertical mills. Background technique [0002] At present, the cement grinding process can be divided into two types: vertical mill and tube mill (ball mill). Compared with the tube mill (ball mill) process, the vertical mill has obvious advantages, because there are no steel balls and steel segments, the vertical mill naturally avoids the impact and wear between the metals, the metal wear is small, and the noise is low; and because It is an air-swept grinding mill, and its own powder selection function avoids the phenomenon of over-grinding, thus reducing the consumption of useless work and high grinding efficiency. Compared with the tube mill system, the power consumption of grinding is only 60% of the latter It also has the characteristics of simple process flow, large single-machine output, large feeding parti...

AI Technical Summary

Problems solved by technology

[0004] Usually, compared with the cement produced by tube mill (ball mill), the particle distribution, especially the particle gradation, of the cement produced by vertical mill is not ideal, the sphericity of cement product is not high, and the standard of cement product Consistency water consumption is too large, the adaptability of cement products and concrete admixtures is relatively poor

However, the technology of using cement grinding aids in cement vertical mills is still in the development and exploration stage.

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