Flashcards in Extracting Iron Deck (11):
How is Iron extracted from it's Ore?
Using a large reaction container called a Blast Furnace
What raw materials are added to the top of the Blast Furnace?
Iron Ore (eg. Haematite)
Coke (Mostly carbon)
Limestone (purifies the iron)
What is forced in at the bottom of the blast furnace?
How is Coke made?
Heating coal in absence of air
What are the 4 raw materials used to make Iron?
What is the main reducing agent in the blast furnace?
What is Stage 1 in extracting Iron?
Stage 1: Coke burns in hot air forming Carbon Dioxide
What is Stage 2 in extracting Iron?
Stage 2: More coke reduces Carbon Dioxide making Carbon Monoxide
What is Stage 3 in extracting Iron?
Stage 3: Carbon Monoxide reduces Iron (III) oxide to Iron at about 1500 degrees
How are the impurities from the Iron Ore Removed?
Stage 1: Calcium carbonate (limestone) decomposes in high temperatures
Stage 2: Calcium oxide formed reacts with silica from sandy impurities to form calcium Silicate