Comparer des méthodes

	Modèle du noyau shrinking	Électroextraction
Domaine	Génie minier	Génie minier
Famille	Process / pipeline	Process / pipeline
Année d'origine	1976	1890
Auteur d'origine	Szekely, Evans, and Sohn	Industrial Electrometallurgy Practice
Type	Reaction kinetics model for solid-fluid reactions	Electrochemical metal extraction and purification
Source fondatrice	Szekely, J., Evans, J. W., & Sohn, H. Y. (1976). Gas-solid reactions. Academic Press, New York.	Habashi, F. (2011). Electrometallurgy: principles, processes and materials. Metallurgical Transactions, 29(7), 1569-1589.
Alias	Shrinking Unreacted Core Model, SCM, Leaching Kinetics Model	Electrodeposition, Electrolytic Extraction
Apparentées	3	3
Résumé	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.