21-Mat-A3 Structure and Characterization of Materials, December 2013: worked solutions

Paper format. National Exams, December 2013 — 10-Met-A3, Metal Extraction Processes. Three hours, closed book, one approved calculator (Casio or Sharp). Seven problems of 20 marks each; the rubric asks for any five, and only the first five in the answer book are marked. All seven are solved here.

The printed exam header reads 10-Met-A3, Metal Extraction Processes. The content is extractive metallurgy — mineral processing, roasting, ironmaking, magnesium and aluminum production — and is answered as such.

Reference texts. The answers below are keyed to the works normally recommended for this syllabus code:

F. Habashi, Textbook of Pyrometallurgy — roasting, smelting, mass and heat balances.
T. Rosenqvist, Principles of Extractive Metallurgy, 2nd ed. — blast-furnace ironmaking, thermal and electrolytic reduction.
B. A. Wills and J. Finch, Wills' Mineral Processing Technology, 8th ed. — pulp density, froth flotation, reagent chemistry.
D. R. Gaskell, Introduction to the Thermodynamics of Materials — heat capacities, transformation enthalpies.
ASM Handbook, Vol. 15 (Casting) and the CIM / Canadian Institute of Mining practice literature for Canadian smelter and refinery practice.

21-Mat-A3 Structure and Characterization of Materials: December 2013