Growth and aggregation control of spinel by shear-force-based melting modification of stainless steel slag
| Autor: | Long-hu Cao, Qing Zhao, Chengjun Liu, Tian-ci Gao, Maofa Jiang |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Shear force Nucleation chemistry.chemical_element Crystal growth 02 engineering and technology engineering.material 010502 geochemistry & geophysics 01 natural sciences 020501 mining & metallurgy chemistry.chemical_compound Chromium Geochemistry and Petrology Materials Chemistry Composite material 0105 earth and related environmental sciences Mechanical Engineering Spinel Metals and Alloys Slag Silicate 0205 materials engineering chemistry Mechanics of Materials visual_art visual_art.visual_art_medium engineering Intensity (heat transfer) |
| Zdroj: | International Journal of Minerals, Metallurgy, and Materials. 25:1140-1147 |
| ISSN: | 1869-103X 1674-4799 |
| Popis: | To improve the efficiency of melting modification for stainless steel (SS) slag, a shear force was introduced in this work and its effects on the spinel and silicate melt were experimentally investigated. The results indicated that the use of shear force changed the nucleation and growth behaviors of spinel and that the effects of shear force varied with its intensity. The aggregation behavior of spinel under different shear-force conditions was studied, revealing that large spinel clusters could be formed when the stirring speed was controlled. However, no notable change in the melt structure of the silicate was detected in this study. The optimal stirring speed for the melting modification treatment was 50 r·min−1, which substantially promoted spinel growth and aggregation, resulting in modified SS slag with excellent chromium sequestration capability. |
| Databáze: | OpenAIRE |
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