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Life Cycle of Iron
Transcript of Life Cycle of Iron
Extraction of Raw Material and Refining
• Iron ore is usually extracted through open-pit mining, where a large part of the ground is removed to show the land underneath
Production of Iron Ore, Limestone, and Coke fuel into Iron
•Iron leaves from the bottom of the furnace and later into ingots
1. Iron needs to be extracted from the iron ore
•Blast furnace is used with limestone and coke fuel (from coal)
• Coke and oxygen coming are turned to carbon monoxide
• Carbon monoxide and iron make pure iron and carbon dioxide
• Limestone removes impurities from iron ore
Slag formed from impurities is removed
Processing and Manufacturing
•It is refined by crushing the iron and sorting through it.
Best ore has 60%+ iron. If it is lower than 60%, it is refined by removing contamination.
• Gases that go out go to a gas cleaning plant
Iron is often produced into eight main categories of products:
containers, packaging, and shipping
machinery and industrial equipment
oil and gas industries
electrical equipment (lamps)
appliances and utensils (lamps)
Iron is also alloyed with other elements to create products such as steel.
• It can be reduced by recycling it
• Reusing is better than recycling
It uses less to none reprocessing compared to recycling.
There is not any remelting or making of anything. It requires less energy.
• Most recycling companies take iron scraps. The company breaks the scraps into smaller pieces and then it is melted for reuse in iron and steel production.
• Recycling iron can use 75% less energy than making it from raw materials.
Disposal & Environmental Concerns
Scrap that isn't recycled can turn in to iron oxide or rust and it goes back into the ground.
Iron is mostly supplied from:
China- 44% (of the world's iron ore)
They need iron to industrialize economy and support population of more than 1.3 billion
They have a lack of regional supply that causes them to import iron from other countries.
They have a high steel consumption because of their steel mills.
Top Consumers of Iron:
Open pit depleted mines are turned into landfills
The landfills may cause problems such as leak chemicals into the soil and ground.
Extraction of iron from the ore can produce some gases that can escape, even if they are sent to a gas cleaning plant.
The small amounts of dangerous gas can leak into the atmosphere.
Chemical and Physical Properties
•capable of being bent, rolled, hammered, cut, shaped, formed,
• Reacts with hot water and steam to create hydrogen gas