AQUEOUS EXTRACTION, CONCENTRATION
Lectures: MWF 9 - 9:50 a.m. (MI 320)
Dr. William M. Cross - Rm 110/MI Bldg.
Office Hours - MWF 1:00-2:00 apm.
(or by appointment)
Three 1-hr Tests: 300 Pts
Globalization Work: 100 Pts
Final Exam – comprehensive exam
Homework will not be graded. However, the problems will be discussed in
class followed by short quizzes.
For the globalization assignments, for each section (extraction [leaching],
concentration [flotation], and recycling, each student will choose a mineral/metal value and
write a paper discussing where the mineral/metal values are recovered, how this value effects
the countries in which the chosen value is a significant portion of the export economy and how
new mineral/metal value deposits would effect these countries. These assignments will be due
at the end of each section.
These assignments are performed to fulfill the pertinent South Dakota Board of Regents
Globalization/Global Issues writing requirements, which are given in
http://www.sdbor.edu/policy/2-Academic_Affairs/documents/2-7.pdf pages 27-28.
Students with special needs or requiring special accommodations should contact the
instructor, (Dr. William M. Cross, at ext: 2485) and/or the campus ADA
coordinator, Ms. Jolie McCoy, at 394-1924 at the earliest opportunity.
AQUEOUS EXTRACTION, CONCENTRATION AND RECYCLING
Textbook: K. N. Han, “Fundamentals of Aqueous Metallugy”, SME, 2002, 212p.
References: A. W. Adamson, "Physical Chemistry of Surfaces," 3rd Edn, Interscience Pub.
J. Leja, "Surface Chemistry of Froth Flotation," Plenum Press (1982)
A.R Burkin, “Chemical Hydrometallurgy: Theory and Principles”, Imperial
College Press (2001)
Lecture Topics .
1 Introduction Hydrometallurgy
2-12 Characterization of Particles (size, shape, density, surface area, porosity),
Motion of solids in fluids;
Solution Thermodynamics – Activity Coefficients, Solubility Calculations,
Metal Complexation, Effect of Temp and Pressure on Equilibrium, Eh-pH
13 Test I
15 Introduction Surface Chemistry and Flotation
16-25 Interfacial Phenomena: Surface Tension, Wetting Phenomena, Spreading,
Contact Angle, Gibbs Adsorption Equation [pp.1-12; 15-20]
Electrical Double Layer Theory; Origin of Charges, Gouy Model, Stern and
Grahame Approach, Electrokinetics, Surface Potential, Zeta and Streaming
Potentials, Flotation of Oxides and Sulfides [pp.21-48]
Colloidal Stability [48-54]
26 Test II
27 Introduction Kinetics
28-39 Leaching Kinetics: Kinetic Expressions, Data Analysis, Temperature Effect
on Leaching Kinetics [pp.107-127]
Removal of Metal Ions from Leach Liquor: Solvent Extraction, Electrowinning
Ion Exchange, Tactics Involved with Recycling Metal Values, Effluent
40 Test III