A Differential Scanning Calorimetry Method for Construction of Continuous Cooling Transformation Diagram of Blast Furnace Slag
| Autor: | Zhang Chunxia, Fangqin Shangguan, Lei Gan, Li Xiuping |
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| Rok vydání: | 2012 |
| Předmět: |
Diffraction
Materials science Structural material Physics::Medical Physics Metallurgy Metals and Alloys Thermodynamics Continuous cooling transformation Condensed Matter Physics law.invention chemistry.chemical_compound Differential scanning calorimetry chemistry Mechanics of Materials Ground granulated blast-furnace slag law Heat transfer Calcium silicate Materials Chemistry Crystallization |
| Zdroj: | Metallurgical and Materials Transactions B. 43:460-467 |
| ISSN: | 1543-1916 1073-5615 |
| DOI: | 10.1007/s11663-011-9631-1 |
| Popis: | The continuous cooling crystallization of a blast furnace slag was studied by the application of the differential scanning calorimetry (DSC) method. A kinetic model describing the correlation between the evolution of the degree of crystallization with time was obtained. Bulk cooling experiments of the molten slag coupled with numerical simulation of heat transfer were conducted to validate the results of the DSC methods. The degrees of crystallization of the samples from the bulk cooling experiments were estimated by means of the X-ray diffraction (XRD) and the DSC method. It was found that the results from the DSC cooling and bulk cooling experiments are in good agreement. The continuous cooling transformation (CCT) diagram of the blast furnace slag was constructed according to crystallization kinetic model and experimental data. The obtained CCT diagram characterizes with two crystallization noses at different temperature ranges. |
| Databáze: | OpenAIRE |
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