Title:
Development and Use of New Generation Grinding Aids to Reduce CO2 Emissions and Optimize the Clinker Factor
Author(s):
Joseph J. Assaad and Salim E. Asseily
Publication:
Symposium Paper
Volume:
289
Issue:
Appears on pages(s):
1-13
Keywords:
clinker factor, energy consumption, grinding aids.
DOI:
10.14359/51684256
Date:
9/14/2012
Abstract:
With today’s constraints on the necessity to reduce carbon dioxide emissions and optimize cement cost, a growing need has arised to develop new generation grinding aids (GA) that can substantially minimize the clinker factor while maintaining adequate compressive strength. A newly developed GA containing combinations of amine-based polymers and polycarboxylate acids was tested and compared to traditional glycol-based GA. Test results showed that the new generation GA leads to significant improvements in the performance of grinding mills, and decreases water demand needed to achieve given consistency. Compared to control mix, strength increase reaching 44% was measured when the new generation GA was added at 0.3% of cement weight. The corresponding clinker factor and energy consumption were found to be simultaneously reduced by 30% and 4.25%, respectively.