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| Determination of Amorphous Phases in BF Slag by XRay Diffraction |
| DAI Xiaotian,GUO Peimin,QI Yuanhong,ZHANG Chunxia,YAN Dingliu |
| State Key Laboratory of Advanced Steel Processing and Products, Central Iron and Steel Research Institute Group, Beijing 100081, China |
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Abstract The quantitative analytical method for amorphous and crystalline phases in blast furnace slag was studied by Xray 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 2theta 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%.
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Received: 01 January 1900
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2009, Vol. 44 
