X射线衍射法测定高炉渣中非晶相含量的研究

Determination of Amorphous Phases in BF Slag by X-Ray Diffraction

用X射线衍射法对高炉渣中非晶相含量进行了定量分析。采用晶态衍射峰和非晶包的积分面积分别表征高炉渣中晶体和非晶体的衍射强度,在此基础上找出晶体与非晶体的质量比(mc/ma)和晶态与非晶衍射峰的面积比(Ic/Ia)呈线性关系的区域,并通过线性回归求出比例系数K。实验发现,不同的炉渣mc/ma和Ic/Ia呈线性关系的区域不同,它们的K值也各不相同;这种方法适用于对非晶含量较高、采用急冷处理的高炉渣进行定量分析;该方法的绝对误差<4%、相对误差<5%。

The quantitative analytical method for amorphous and crystalline phases in blast furnace slag was studied by X-ray diffraction. The diffraction intensity of amorphous and crystalline phases could be denoted by the integration areas of amorphous curve and crystalline peaks respectively in a certain 2-theta range. On this basis, the coefficient K can be calculated by the relationship between mc/ma （mass ratio of crystalline to amorphous solids） and Ic/Ia （area ratio of integrated amorphous curve to crystalline peaks） through liner fitting. The suitable amorphous content range for K can be also determined. It was found that the range which mc/ma and Ic/Ia was in linear relationship varied with different slags and the value of K is different too. This method is suitable for the quenched blast furnace slag with high amorphous content. The absolute error of this method is less than 4%, and the relative error is less than 5 %.