Liquid cement grinding aid with low alcohol amine content and preparation method of liquid cement grinding aid

Abstract

The invention discloses a liquid cement grinding aid with low alcohol amine content and a preparation method of the liquid cement grinding aid. The liquid cement grinding aid is formed by waste molasses, sodium lignosulphonate, sodium formate, triethanolamine, sodium alkyl benzene sulfonate, silicone defoamer, polycarboxylic acid water reducer and water through mixing. The liquid cement grinding aid comprises the following components by weight: 18-25% of the waste molasses, 8-12% of the sodium lignosulphonate, 5-6% of the sodium formate, 6-10% of the triethanolamine, 1-4% of surface active agent, 8-10% of polycarboxylic acid water reducer, and the balance of water. In the product, the alcohol amine content is reduced, industrial waste liquid or regenerant waste molasses and the sodium lignosulphonate are used, resources are reasonably used, a proper amount of the sodium alkyl benzene sulfonate is added at the same time so as to be beneficial for the dispersion of the grinding aid, andtherefore, the grinding aid effect of the product is good, the output of one machine can be obviously improved, and the later strength of cement can be improved.

Description

technical field [0001] The invention relates to a cement grinding aid, in particular to a liquid cement grinding aid with low alcohol amine content and a preparation method thereof. Background technique [0002] my country has a large cement output and has become the largest producer of cement. Cement production consumes a lot of energy, and its grinding process accounts for two-thirds of the total electricity consumption, so the energy utilization rate is low. Therefore, improving the grinding efficiency is the key to saving energy and reducing consumption in cement production. During the cement grinding process, when the cement particles receive external mechanical energy, in addition to the miniaturization of the particle size and the increase of the specific surface area, the amorphous surface layer of the particles, lattice defects, lattice distortion, and surface free energy increase, etc. A series of changes make the particles in a metastable high-energy state, ther...

AI Technical Summary

Problems solved by technology

Triethanolamine and triisopropanolamine are petrochemical raw materials, and their prices are greatly affected by petroleum. At present, the prices remain high, which leads to an increase in the cost of grinding aids and affects their popularization and application.