Cement grinding aid suitable for low-activity cement admixtures and preparation method thereof

Abstract

The invention discloses a cement grinding aid suitable for low-activity cement admixtures and a preparation method thereof. The cement grinding aid comprises the following components by weight percent: 30-40% of triisopropanolamine, 3-7% of sodium lignosulphonate, 5-7% of sodium alkyl benzene polymerase sulfonate, 8-12% of sugar lime, 2-4% of barium chloride and 40-42% of water. When used in cement production, the cement grinding aid has the advantages of increasing the output per machine-hour of cement mills by 15-25%, saving the power consumption for powder grinding by 15-25%, increasing thestrength of the cement at all ages by nearly 25%, additionally adding the amount of the low-activity cement admixture by 10-15%, shortening the initial setting time and the final setting time of thecement by about 60 minutes so as to be beneficial to the construction operation of the cement, and increasing the comprehensive economic benefit of the cement by about 10 yuan / ton.

Description

technical field [0001] The invention belongs to cement grinding aids, in particular to a cement grinding aid suitable for low-activity cement admixtures and a preparation method thereof. Background technique [0002] Cement grinding aids not only have the effect of improving cement grinding efficiency and cement output, but also have the function of increasing the strength of cement at various ages, reducing the consumption of clinker, and thus mixing more admixtures. At present, the resources of active mixed materials (mainly slag) in my country are limited, while the resources of some less active mixed materials (fly ash, burnt coal gangue, volcanic ash, steel slag, natural coal gangue, limestone, etc.) are very rich. Abrasive products generally have unsatisfactory grinding and strengthening effects on cement made from low-activity admixtures. Contents of the invention [0003] The purpose of the present invention is to provide a kind of cement grinding aid adapting to l...

AI Technical Summary

Problems solved by technology

At present, the resources of active mixed materials (mainly slag) in my country are limited, while the resources of some less active mixed materials (fly ash, burnt coal gangue, volcanic ash, steel slag, natural coal gangue, limestone, etc.) are very rich. Abrasive products generally have unsatisfactory grinding and strengthening effects on cement made from low-activity admixtures