摘要
采用基体冲洗法进行XRD定量分析,计算由β-C2S向γ-C2S的转晶量;采用粉化率作为粉化效果评估指标,粉化率定义为自粉化熟料通过36孔/cm2筛(孔径1.02mm)的质量百分率;采用实验室磨机进行粉磨能耗试验;运用BET氮吸附法测量粉化前后熟料比表面积增量;采用双液接触角法测定熟料表面能。结果表明:粉化率大于95%的熟料,其中30%～40%的物料可通过80μm孔,如稍加粉磨,即可满足要求;80μm筛筛余物料粒径比较集中地分布在0.088～0.385mm,且颗粒极疏松,粒径大于1.0mm的物料很少;自粉化熟料可节省粉磨能耗60%～70%;根据功能转换原理得出了从γ-C2S含量估测自粉化效应的节能粉磨能耗公式。
Quantitative XRD analysis, with matrix washing method, was introduced to calculate the quantity of γ-C2S transformed from β-C2S; The pulverization rates which was defined as under size （1.02mm aperture） weight percentage was adopted to judge pulverization effect; The grinding power consumption of several kinds of clinker were tested by lab mill. The increment of specific area of clinker was tested by BET nitrogen adsorption method and the surface energy of clinker was tested by double-liquid contact angle. The results indicated that when the pulverization rates of clinker was higher than 95%, 30%-40% of which could pass through 80μm mesh and could be easily ground to the required fineness, and the particle size of the residues were located mostly within 0.088-0.385mm with a few fraction of particles over lmm, and these particals were also with high porosity and easily be ground,Compared to the normal clinker, he energy saving of pulverizable sulfoaluminate cement clinker for grinding could reach 60%-70%; the formula expression to evaluating grinding energy saving of pulverizable clinker was established as well as the experiental formula between grinding energy saving value N and γ-C2S content.
出处
《水泥》
CAS
2007年第6期13-16,共4页
Cement
关键词
粉化率
粉磨
节能
pulverization rates
grinding
energy saving
