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| 炉渣碱度× | 收缩核模型× | |
|---|---|---|
| 领域 | 采矿工程 | 采矿工程 |
| 方法族 | Process / pipeline | Process / pipeline |
| 起源年份≠ | 1950 | 1976 |
| 提出者≠ | Pyrometallurgical Practice | Szekely, Evans, and Sohn |
| 类型≠ | Slag composition parameter for controlling roast/smelt conditions | Reaction kinetics model for solid-fluid reactions |
| 开创性文献≠ | Barnes, J. F., Edwards, C. C., & Sims, R. L. (2010). Copper smelting and refining: pyrometallurgical fundamentals. JOM, 52(12), 38-43. link ↗ | Szekely, J., Evans, J. W., & Sohn, H. Y. (1976). Gas-solid reactions. Academic Press, New York. link ↗ |
| 别名≠ | Basicity Index, Slag Chemistry Parameter | Shrinking Unreacted Core Model, SCM, Leaching Kinetics Model |
| 相关 | 3 | 3 |
| 摘要≠ | Slag basicity is a measure of the composition of slag formed during smelting and roasting operations. It is typically expressed as the ratio of basic oxides (CaO, MgO) to acidic oxides (SiO2). Basicity controls slag fluidity, viscosity, and reactivity, directly affecting metal recovery, processing temperature, and product quality. It is a critical parameter in copper, nickel, and lead smelting. | The Shrinking Core Model, formalized by Szekely, Evans, and Sohn in 1976, describes the kinetics of chemical reactions between solid ore particles and surrounding fluids (leaching solutions, roasting gases). As the reaction proceeds from the particle surface inward, an unreacted core shrinks while products accumulate in a product layer. The model enables prediction of leaching times and optimization of hydrometallurgical processes. |
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