Composite cement grinding aid

Abstract

The invention relates to a composite cement grinding aid, which is characterized by being composed of the following components by weight part: 10-15 of triethanolamine, 1-4 of sodium formate, 1-4 of sodium acetate, 6-10 of sodium chloride, 5-8 of urea, 10-15 of a composite alcohol mother liquor, 1-2 of ammonium sulfate, 5-10 of sodium thiosulfate, 1-2 of calcium lignosulfonate, 1-4 of diethylene glycol, 1-3 of sodium lignin sulfonate, 6-10 of molasses, and 6-10 of fly ash. The composite cement grinding aid provided by the invention can significantly improve the powder grinding efficiency of cement mill by 8%-15%, appropriately increases the cement early strength by 2-3MPa and increase the cement later strength by 2-4MPa. All the components cooperate with each other to improve the adaptability of the grinding aid so as to be applicable to different grades of cement, the use range is enlarged, the grinding aid effect is improved substantially, also the machine-hour output is enhanced, the energy consumption is reduced, and the dosage is low, i.e. 0.01-0.06% / ton cement.

Description

technical field [0001] The invention relates to a composite cement grinding aid. Background technique [0002] Cement grinding is a necessary process and key link in cement production. Its energy consumption and electricity consumption account for 30% of the total energy consumption of cement production and more than 70% of the total electricity consumption. At present, the national low-carbon environmental protection requirements are getting higher and higher. Sluggish prices, rising prices of raw materials and energy, and fierce competition in the industry have stretched the profitability of cement companies. Therefore, energy conservation and emission reduction, development of low-carbon economy, cost reduction, and improvement of grinding aid performance are urgent problems to be solved by the cement industry. In order to reduce energy consumption and improve grinding efficiency, people usually take the following two measures: first, improve the grinding equipment and g...

AI Technical Summary

Problems solved by technology

There are still many problems in the use of grinding aids in my country, such as chloride salts bring great safety hazards to the durability of cement and concrete; the quality of grinding aids is unstable, and the amount of mixing is large, which leads to fluctuations in cement quality, etc.

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