C1a Rocks and Metals. 2.2 Extracting Iron. Learning objectives. Understand which metals can be extracted using carbon Be able to describe how a blast furnace works. What do you understand?. How would you rate yourself when thinking about extraction of metals?.
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2.2 Extracting Iron
Metals above carbon must be extracted using electrolysis.
Metals below carbon
can be extracted from the ore by reduction using carbon, coke, or charcoal.
Gold and silver often do not need to
be extracted. They occur native.
carbon + oxygen carbon dioxide
Carbon dioxide + carbon carbon monoxide
Carbon monoxide + iron oxide iron + carbon dioxide
Calcium carbonate calcium oxide + carbon dioxide
Calcium oxide + silicon dioxide calcium silicate
This is called SLAG