21-Mat-B2 Pyrometallurgy
Worked solutions to 2 past sittings (2015–2018), 12 questions. Pick a sitting, or start from a topic below.
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Ten hydrometallurgical/electrochemical term pairs (2 sittings): December 2018 Q2 · May 2015 Q2
Questions by sitting
December 2018
- Question 1: Generic hydrometallurgical process flow diagram
- Question 2: Ten hydrometallurgical/electrochemical term pairs
- Question 3: Eh-pH diagrams for the Au-, Ag-, Cu- and Fe-CN-H2O systems
- Question 4: Divalent-metal hydroxide speciation and solubility diagram
- Question 5: Selective sulfide precipitation of Mn²⁺ and Cu²⁺
- Question 6: Electrochemical vocabulary and zinc electrowinning energy consumption
May 2015
- Question 1: Generic hydrometallurgical process flow sheet
- Question 2: Ten hydrometallurgical/electrochemical term pairs
- Question 3: Idealized Ni(OH)2 solubility diagram
- Question 4: Lead recovery from battery scrap by chloride leaching and electrowinning
- Question 5: Nickel electrodeposition: safe pH window and hydrogen co-evolution
- Question 6: Co-H2O Eh-pH diagram: dissolution paths for Co3O4