The diagram shows a blast furnace used to extract iron metal from iron ore - Leaving Cert Chemistry - Question B - 2015
Question B
The diagram shows a blast furnace used to extract iron metal from iron ore. Iron ore is added in the charge at the top while hot air is pumped in at the bottom as sh... show full transcript
Worked Solution & Example Answer:The diagram shows a blast furnace used to extract iron metal from iron ore - Leaving Cert Chemistry - Question B - 2015
Step 1
Give the name or formula of an ore of iron.
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Answer
One common ore of iron is hematite, which has the chemical formula extFe2extO3. Other examples include magnetite (extFe3extO4) and iron oxide.
Step 2
Name another substance added in the charge with the iron ore.
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Another substance often added in the charge with iron ore is coke (made from coal) or limestone. Coke acts as a fuel and reducing agent, while limestone helps to remove impurities.
Step 3
What name is given to the impurity removed at X?
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The impurity removed at outlet X is referred to as slag. Slag consists of the molten impurities that float on the molten iron.
Step 4
Name this alloy.
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The alloy produced from iron is typically known as steel. Other forms include pig iron or cast iron.
Step 5
What other element is always present in this alloy?
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The element that is always present in steel is carbon. It is usually present in varying amounts to enhance the properties of the alloy. Additionally, silicon may also be present to improve certain characteristics.
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