The invention discloses a liquid
grinding aid capable of promoting coagulating, and a preparation method thereof, and belongs to the technical field of
cement additive. The liquid
grinding aid capableof promoting coagulating is prepared from, by
mass, aluminum
sulfate of 5% to 15%,
magnesium sulfate of 5% to 10%, modified
alcohol amine small
organic molecules of 40% to 50%,
sodium lignosulfonateof 3% to 10%,
calcium formate of 1.5% to 3%, and balance deionized water. According to the preparation method, aluminum
sulfate and
magnesium sulfate are mixed as a coagulating promoting main component, so that
cement hydration process is accelerated; chemical imbalance caused by high content
aluminium ions is capable of realizing dissolving of
gypsum and C3A easily, promoting early stage generation of a large amount of
ettringite, and realizing rapid coagulation; the modified
alcohol amine small
organic molecules are taken as a
grinding aid enhancing component, and is high in stability; the preparation technology is simple; reaction is relatively mild; the liquid grinding aid is capable of promoting
cement early stage rapid coagulation, and at the same time, early stage strength is ensured, later stage strength increasing is not influenced, and the adaptability on cement is excellent.