Pyrometallurgy (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What term describes unwanted materials separated from metals in pyrometallurgy?
What term describes unwanted materials separated from metals in pyrometallurgy?
Gangue
What is the typical temperature range used in pyrometallurgical processes?
What is the typical temperature range used in pyrometallurgical processes?
500-2000°C
What is an autogenous pyrometallurgical process?
What is an autogenous pyrometallurgical process?
Sustained by exothermic reactions alone
Which metals can pyrometallurgy extract that cannot be reduced from aqueous solutions?
Which metals can pyrometallurgy extract that cannot be reduced from aqueous solutions?
Alkaline earth metals, Zr, Ti
What is calcining?
What is calcining?
Thermal decomposition through heating
What is the most common type of roasting process?
What is the most common type of roasting process?
Oxidation of metal sulfide ores
What is dead roasting?
What is dead roasting?
Complete oxidation with excess oxygen
What reducing agents are typically used in smelting metal oxides?
What reducing agents are typically used in smelting metal oxides?
Coke or charcoal (carbon sources)
What distinguishes smelting from other pyrometallurgical processes?
What distinguishes smelting from other pyrometallurgical processes?
At least one product becomes molten
Which metals are commonly extracted using pyrometallurgical processes?
Which metals are commonly extracted using pyrometallurgical processes?
Iron, copper, zinc, chromium, tin, Mn
Why are pyrometallurgical methods preferred for large-scale industrial production?
Why are pyrometallurgical methods preferred for large-scale industrial production?
Cheaper & process large quantities
What advantage do high temperatures provide in pyrometallurgical reactions?
What advantage do high temperatures provide in pyrometallurgical reactions?
Dramatically accelerate reaction rates