改性三乙醇胺助磨剂对粉煤灰水泥的助磨性能

Effect of Modified Triethanolamine Grinding Aids on Grinding Performance of Fly Ash Cement

有机助磨剂是提高水泥粉磨效率，促进水泥工业节能降耗的一个重要措施，为改善传统三乙醇胺助磨剂的助磨瓶颈和成本问题，采用冰醋酸对三乙醇胺进行酯化改性，研究了改性三乙醇胺（TEA—E）助磨剂对不同配比粉煤灰水泥的助磨效果，并分析了助磨机理。结果表明：TEA-E助磨剂对粉煤灰水泥的助磨效果优于三乙醇胺，可降低粉煤灰水泥休止角3°以上，使水泥3～32μm范围的颗粒含量提高达10％以上，起到提高粉体流动性及颗粒均匀性、优化颗粒级配等显著作用。

Organic grinding aids are important measure to improve grinding efficiency and promote energysaving in cement industry. To improve the bottleneckes and cost problem, triethanolamine is modified by esterification method with glacial acetic acid, and grinding effect of the modified triethanolamine （TEA-E） on different fly ash cement is studied and its grinding mechanism is analyzed. The results show that the grinding effect of TEA-E on fly ash cement is better than cement is reduced by plays a significant more than 3°, and tile content effect of improving the powder that of triethanolamine, the angle of repose of fly ash of 3 - 32μm particles is improved by more than 10%. TEA-E angle of repose and particles uniformity and optimizing the particle size distribution.