水泥适应性差的原因分析及解决措施

Analysis of Causes of Poor Adaptability of Cement and Solutions

主要分析了水泥颗粒级配、水泥混合材和石膏、水泥熟料对水泥适应性的影响。干法激光粒度分析仪检测结果表明,适应性较好和较差的水泥颗粒级配差异性不大;混合材和石膏关键成分检测以及小磨试验结果表明,在同一熟料基础上,用不同质量的水泥混合材和缓凝剂磨制成的水泥,适应性变化不明显;水泥熟料X荧光检测、岩相分析和衍射分析表明,熟料质量是水泥适应性变差的主要原因,熟料中C3A含量及碱含量越高,水泥适应性越差。实际应用中,通过控制熟料硫碱比≮0.45,适当提高熟料KH及AM,同时,严格控制窑内风、煤、料的匹配,有效解决了水泥适应性变差的问题。

This paper mainly analyzes the influence of cement particle size distribution,cement admixture and gypsum,cement clinker on the adaptability of cement.Results of dry laser particle size analyzer show that there is little difference in the gradation of cement particles with good and bad adaptability.Results of testing the key components of admixture and gypsum as well as small grinding test show that the adaptability of the cement made by grinding with different quality of cement mixture and retarder on the basis of the same clinker is not obvious.Results of X-ray fluorescence detection,lithofacies analysis and diffraction analysis of cement clinker show that the quality of clinker is the main reason for the poor adaptability of cement.The higher the content of C3A and alkali in clinker,the worse the adaptability of cement.In practical application,by controlling the sulfur-alkali ratio of clinker is less than 0.45,improving KH and AM of clinker appropriately,and matching the air,coal and clinker in kiln strictly,the problem of poor adaptability of cement is effectively solved.