For each of the metals listed below, name a suitable furnace used in the production of the metal:
(i) Steel
(ii) Pig iron
(iii) Cast iron. - Leaving Cert Engineering - Question b - 2016
Question b
For each of the metals listed below, name a suitable furnace used in the production of the metal:
(i) Steel
(ii) Pig iron
(iii) Cast iron.
Worked Solution & Example Answer:For each of the metals listed below, name a suitable furnace used in the production of the metal:
(i) Steel
(ii) Pig iron
(iii) Cast iron. - Leaving Cert Engineering - Question b - 2016
Step 1
(i) Steel
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Answer
A suitable furnace used in the production of steel is the Basic Oxygen Furnace. In this process, scrap iron and steel are combined with lime and molten pig iron. Oxygen is then injected to oxidize impurities, allowing for the refining of steel.
Step 2
(ii) Pig iron
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Answer
The appropriate furnace for producing pig iron is the Blast Furnace. This furnace utilizes iron ore, coke, and limestone, where the charge is fed from the top and heated. The coke generates carbon monoxide, which reduces the iron ore to iron.
Step 3
(iii) Cast iron
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Answer
The Cupola Furnace is commonly used for the production of cast iron. In this furnace, pig iron and scrap steel are charged with raw materials, and limestone acts as a flux to remove impurities, yielding cast iron.
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