This course aims to apply the fundamental and applied chemical thermodynamics to the prediction of practical process of smelting and refining of metals. Solution theory is the main approach which requires proper understanding of chemical potential and activity of the components of the system consequently leading to the concentration relation. In the series of the classes, the instructor mainly explains about models such as regular solution focusing on the enthalpy and entropy term and thermodynamic index such as impurity capacity determined by slag basicity and activity coefficient of impurity, which methods can be acquired through many exercises.
【Target】Metal smelting and refining processes are composed of reduction of metal ore and removal of impurities from metals by the reaction with molten compounds and gaseous phases. Acquisition of applied thermodynamics for proper prediction of the final state is the goal of this course. This course provides the fundamental relations between thermodynamic functions and models to be applied to the practical processes.
【Theme】 Activity of each components of the system is of significant importance to proper understanding of the smelting and refining process of metals. This course takes up mathematical treatment of the activities and activity coefficients including derivation of the value of one from that of the other components. Nature of the slag is described in viewpoint of impurity capacity which leads to prediction of impurity distribution deciding refining efficiency.
Thermodynamics, activity, chemical potential, solution theory, impurity capacity, impurity destribution
|Intercultural skills||Communication skills||✔ Specialist skills||Critical thinking skills||✔ Practical and/or problem-solving skills|
Review and derivation of thermodynamic relations will be made mainly on solution theory, followed by the comprehension check of solving typcial practical problems.
|Course schedule||Required learning|
|Class 1||General introduction, activity of Raoultian and Henrian standard||Conversion of the activity standard from Raoultian to Henrian|
|Class 2||Review of activity of 1mass% Henrian standard and interaction coefficients||Derivation of activity relative to 1mass% Henrian stanrdard by way of interation coefficient|
|Class 3||Partial and integral molar quantity, the Gibbs-Duhem relation, the Schumann method||Derivation of acitivity by way of the Gibbs-Duhem relation|
|Class 4||Themodynamics of mixture solutoin, regular solution model||Prediction of activity coefficient on the assumption of regural solution model|
|Class 5||Slag basicity, viscosity, structure||Relation between slag basicity and polymerization degree|
|Class 6||Thermodynamics for dephosphorization and desulfurization, impurity capacity of slags||Estimation of phosphorus distribution ratio from phosphate capacity|
|Class 7||Thermodynamics for degassing, deoxidation and sulfide formation||The lower limit of gas concentration of molten metal by degassing processes|
|Class 8||Behaviour of impurities in practical processes, final examination for level check||Final test for achievement evaluation of the total course|
Metallurgical Physical Chemistry, Maruzen
Thermodynamics of solids by Richard A. Swalin, John Wiley & Sons
Stoichiometry and thermodynamics of metallurgical processes by Y. K. Rao, Cambridge University Press
Physical Chemistry of Melts in Metallurgy by F.D. Richardson, Academic Press
Exercise will be made to evaluate the comprehension for each lecture. Final test wil be givne for total achievment. The grading will be made on the basis of the score of exercises(30%) and final test(70%).
Students must have successfully completed 'Themodynamics of Materials' (MAT.A203.R)and 'Physical Chemietry in Metals' (MAT.M302.E） or have equivalent knowledge.
Contact by e-mail in advance to schedule an appointment.