不同CuO掺量下C_3S矿物形成的等温研究

Isothermal Study on Formation of Tricalcium Silicate with Different Content of CuO

通过化学分析和X射线衍射相分析,应用等温煅烧的方法对CuO掺量(质量分数)为0,0.5,1.0,1.5,2.0,3.0的C3S矿物形成动力学进行了系统探讨.通过拟合得到了C3S矿物形成的动力学模型,并根据该动力学模型对不同CuO掺量下C3S矿物形成的速率常数进行了计算.结果表明,在1 450℃,不同CuO掺量下,C3S矿物形成由三维球形对称扩散动力学模型f(α)=(1-(1-α)^(1/3))2=Kt控制;C3S矿物形成的速率常数随CuO含量的增加而增加;CuO的加入有利于C3S的形成.

Based on isothermal sintering,formation kinetics of tricalcium silicate with different content of CuO（0,0.5,1.0,1.5,2.0,3.0） was investigated by X-ray diffraction and chemical analyzing. By fitting, the formation kinetics model of tricalcium silicate with different content of CuO at the sintering temperature of 1450 ℃ is established, and based on this kinetics model, the reaction rate constant, of tricalcium silicate formation with different content of CuO was calculated. The experiment result shows formation kinetics of tricalcium silicate with different content of CuO obey the rate law equation f（ α ） = （1 - 3 √1-α）^2 = Kt. The reaction rate constant of tricalcium silicate formation increases with the increase of CuO content. The addition of CuO contributes to formation of tricalcium silicate.