השוואת שיטות

	בסיסיות סיגים	מודל הגרעין המתכווץ
תחום	הנדסת כרייה	הנדסת כרייה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1950	1976
הוגה השיטה	Pyrometallurgical Practice	Szekely, Evans, and Sohn
סוג	Slag composition parameter for controlling roast/smelt conditions	Reaction kinetics model for solid-fluid reactions
מקור מכונן	Barnes, J. F., Edwards, C. C., & Sims, R. L. (2010). Copper smelting and refining: pyrometallurgical fundamentals. JOM, 52(12), 38-43.	Szekely, J., Evans, J. W., & Sohn, H. Y. (1976). Gas-solid reactions. Academic Press, New York.
כינויים	Basicity Index, Slag Chemistry Parameter	Shrinking Unreacted Core Model, SCM, Leaching Kinetics Model
קשורות	3	3
תקציר	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.