A liquid cement grinding aid

Abstract

The invention relates to a liquid cement grinding aid, the content of which is less than 0.06%, the main component does not contain triethanolamine, which can significantly improve the grinding efficiency of the mill by 10-20%, appropriately improve the early strength of cement and increase the later strength of cement role. The composition of the liquid cement grinding aid is: 10%-20% of β-hydroxyethylethylenediamine, 5%-15% of sorbitol, 10%-15% of diisopropylaminoethanol, 1% of aminobutanol ~5%, glycerol 10%~20%, wood sodium 1~2%, diethylene glycol 0~10%, sodium gluconate 0~8%, and the balance is water, and the stated percentages are mass percentages. The invention has the effects of significantly increasing the grinding efficiency of the mill by 10% to 20%, appropriately improving the early strength of cement and increasing the later strength of cement. Under the condition of maintaining the same cement strength grade, the cement clinker can be reduced by 4% to 6%, and the amount of admixture can be increased by 4% to 6%, which improves the economic and social benefits of cement enterprises.

Description

technical field [0001] The invention relates to a cement grinding aid in the cement manufacturing field, in particular to a liquid cement grinding aid. Background technique [0002] At home and abroad, the production of one ton of cement currently requires 110-120 kg of standard coal and 110-120 kWh of electricity, of which about 40% of the energy is consumed by the grinding of cement clinker. Further improving the grinding efficiency and reducing energy consumption is Major tasks facing the cement industry in various countries. The use of cement grinding aids is one of the effective measures to improve grinding efficiency and reduce grinding energy consumption. In particular, liquid cement grinding aids are easy to use, and can be added smoothly only by adding a storage tank and a liquid metering pump, without complicated and bulky equipment, so they are widely used. The formula of existing foreign liquid cement grinding aids is mainly composed of alcohol amines (TEA, TIP...

AI Technical Summary

Problems solved by technology

However, at present, the main component of low-volume liquid cement grinding aids at home and abroad is still triethanolamine, and the raw material of grinding aids relies heavily on triethanolamine. Moreover, with the fluctuation of oil prices, the price fluctuation of triethanolamine is also quite large, which seriously affects the production of auxiliary materials. The profits and living space of abrasive manufacturers, so it is more and more urgent to seek alternatives to triethanolamine

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