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| Shrinking Core Model× | Elektrovinding× | |
|---|---|---|
| Fagområde | Minedrift | Minedrift |
| Familie | Process / pipeline | Process / pipeline |
| Oprindelsesår≠ | 1976 | 1890 |
| Ophavsperson≠ | Szekely, Evans, and Sohn | Industrial Electrometallurgy Practice |
| Type≠ | Reaction kinetics model for solid-fluid reactions | Electrochemical metal extraction and purification |
| Oprindelig kilde≠ | Szekely, J., Evans, J. W., & Sohn, H. Y. (1976). Gas-solid reactions. Academic Press, New York. link ↗ | Habashi, F. (2011). Electrometallurgy: principles, processes and materials. Metallurgical Transactions, 29(7), 1569-1589. link ↗ |
| Aliasser≠ | Shrinking Unreacted Core Model, SCM, Leaching Kinetics Model | Electrodeposition, Electrolytic Extraction |
| Relaterede | 3 | 3 |
| Resumé≠ | 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. | Electrowinning is an electrochemical process that extracts and refines metals from dilute leaching solutions by passing electric current through an electrolytic cell. Metal ions migrate to the cathode (negative electrode) and are reduced to pure metal, while impurities remain in solution. This process is essential for copper, zinc, cobalt, nickel, and gold refining, producing metals of exceptional purity. |
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