At the lesson the learners should be able to;
- Give the main ore for extraction of iron
- Name the impurities in the main ore
- Give any other ore used in extraction of iron
- Give the methods used in Concentration of the ore
- Explain what happens during roasting of iron ore
- Give a reason why the ore should be roasted
- Name the raw materials for reduction of iron in blast furnace
- Give the role of the fire bricks
- Explain how temperature of 1600⁰C at the base of the furnace is attained
- Explain the role of limestone in the blast furnace
- Name the main reducing agent
- Explain how the main reducing agent is formed
- Explain how Impurities in Haematite are removed in blast furnace
- Name the compound present in slag
- state the role of slag
- write the equation for reduction of oxide of iron in blast furnace
- Describe the process which lead to formation of iron in blast furnace
- Name the components of the waste gases and state it's adverse effects on environment
-state the physical properties of slag that allows it to be separated from molten iron
-Name the impurities in iron and its effect on iron obtained
- Name of iron obtained from blast furnace
- Explain how carbon content is removed in the iron obtained
- State one gas that is recycled
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