Modified triethanolamine, preparation method and application thereof

Abstract

The invention discloses modified triethanolamine, a preparation method thereof and various grinding aids produced by using the modified triethanolamine. The modified triethanolamine is a cross mixed ester product produced through the chemical reaction of triethanolamine, inorganic mixed acid and catalyzer at a temperature. Grinding aid intensifier in powdered form, aqueous liquid form and nonaqueous liquid form is prepared by effectively compounding the product with other components. The triethanolamine is converted into the cross mixed ester having large molecular weight, thus reducing the cost by about 30 percent; the modified triethanolamine is applicable for powder grinding process at high temperature. The cement grinding aid intensifier prepared by compounding triethanolamine with other materials has better grinding aid effect compared with such conventional grinding aids which are used separately as triethanolamine and so on, improves the early strength of cement and reduces the consumption of wrought material; the materials used are cheap, and are stored and transported easily. The multiform products (powdered and in liquid state) are widely applicable in the cement industry.

Description

technical field [0001] The invention relates to the technical field of chemical products, in particular to a modified triethanolamine, a preparation method thereof, and a high-efficiency cement grinding aid produced by using the modified triethanolamine. The cement high-efficiency grinding aid enhancer is used in the cement grinding process to improve the grinding efficiency, increase the early strength of cement, reduce the consumption of clinker, and improve the performance of cement. It belongs to the field of chemical building materials of cement-based material admixtures. Background technique [0002] Energy saving and consumption reduction and improvement of cement quality are long-term and important tasks of my country's cement industry. In cement manufacturing, grinding is an important part and also a part with high energy consumption. When the cement clinker, admixture and gypsum are put into the mill, the materials are gradually crushed and ground under the action...

AI Technical Summary

Problems solved by technology

Due to the high temperature of cement grinding in my country at present, the volatilization loss of traditional grinding aids is serious after use, resulting in unsatisfactory application effects of grinding aids in actual production

[0004] On December 22, 2004, the State Intellectual Property Office published an application whose publication number is CN 1556055A and whose patent name is a kind of high-efficiency cement composite grinding aid. Its components include triethanolamine, acetic acid, aluminum sulfate solution, pulp waste liquid, Low-molecular-weight fatty acid salt and water can greatly reduce the cost of the product, and the effect of grinding aid is remarkable, but it cannot improve the early strength of cement

[0005] There are also some high-efficiency grinding aids with enhanced functions that can improve the early strength of cement, but due to the use of the main raw material triethanolamine, the cost of grinding aids is relatively high