RESEARCH OF THE SYNTHESIS OF CEMENT GRINDING INTENSIFIERS FROM GAS PROCESSING WASTE AND SECONDARY RAW MATERIALS

Abstract

This article presents the results of a study exploring the potential use of gas processing waste as a raw material for synthesizing cement grinding intensifiers. Effective raw materials for synthesizing grinding intensifiers were identified: methyldiethanolamine (a gas processing waste) and hydrolyzed polyacrylonitrile (HIPAN) obtained from recycled nitrofiber. The use of alkanolamines as a raw material for synthesizing grinding intensifiers was substantiated. Physicochemical methods demonstrated the effectiveness of the methyldiethanolamine purification method. Optimal conditions for synthesizing grinding intensifiers were determined. Physicochemical analysis of the resulting grinding intensifiers revealed that all compositions exhibit a very strong C=O (amide) peak at 3300 cm⁻¹, a broad N-H elongation peak at 1236 cm⁻¹, and a strong C-N (amide III) elongation, which together confirm the clear presence of the amide group (-CONH-) required for grinding intensifiers. It was determined that the cumulative distribution curve of the product obtained with the addition of 0.25% of the synthesized grinding intensifiers G+M and G+T shifts toward finer grinding due to the unique combination of active components (alkanolamines, HIPAN), which allows them to act synergistically. HIPAN provides increased efficiency due to its high basicity, which reduces the electrostatic attraction between particles, leading to finer grinding and increased productivity.