水泥熟料自粉化模型

AUTOGENOUS PULVERIZATION MODE OF CLINKER

本文根据能量转换及应力传递原理,描述了熟料的自粉化模型。通过XRD定量分析β-C2S→γ→C2S的转晶量（[γ—C2S]）、BET（N2）吸附法测定粉化前后熟料比表面积增量（△S）、双液接触角法测定熟料比表面能（γ）等试验导出了自粉化模型的三个定量表达式,即:粉化效应比表面积方程、转晶应力方程和比表面积增量与转晶应力（σ）关系式。应用自粉化模型关系式,又导出了熟料矿物组成设计和自粉化效应节能效益估算两个经验公式。由自粉化模型求得的节能效益估算及熟料组成设计值与实验结果基本相符,从而验证了自粉化模型的合理性。

On the basis of the principles of energy conversion and stress delivery, this paper deals with the autogenous pulverization mode(APM) of clinker. According to the amount of transformed γ-C_2S(β-C_2S→γ-C_2S) determind by QXRD, the increase of specific surface(AS) before and after pulverization by BET (N_2), and the specific surface energy (γ) of clinker measured by the contact angle of double solutions, three quantitative equations of APM have been derived: The equation of pulverization effect in terms of specific surface increase; the equation of the stress derived from polymorphous transformation; the equation for the relation between specific surface increase and polymorphous transformation stress. Through the above equations, two approximate formula are developed as well: The formula for designing the mineral constitutions of clinker; the formula for estimating the efficiency of saving energy by the autogenous pulverization effect. The estimated results are generally similar to those obtained by experiments, thus the rationality of the proposed APM is verified.