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en.wikipedia.org/wiki/Blast_furnace

A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron, but also others such as lead or copper. In a blast furnace, fuel, ores, and flux (limestone) are continuously supplied ... He suggests that early blast furnace and cast iron production evolved from furnaces used to melt ...

www.carmeusena.com/markets/steel/blast-furnance

In the blast furnace application, the production of iron historically required three important raw materials: iron ore, coal converted to "coke", and chemical grade ...

chem.libretexts.org/Core/Inorganic_Chemistry/Descriptive_Chemistry/Elements_Organized_by_Block/3_d-Block_Elements/1b_Properties_of_Transition_Metals/Metallurgy/The_Extraction_of_Iron

Nov 29, 2015 ... Extracting iron from iron ore using a Blast Furnace ... Coke is produced by heating coal in the absence of air. Coke is cheap and ... The limestone is added to convert this into slag which melts and runs to the bottom. The heat ...

www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/rocks/metalsrev2.shtml

Iron is extracted from iron ore in a huge container called a blast furnace. ... limestone, calcium carbonate, helps to remove acidic impurities from the iron by ... air, oxygen, allows the coke to burn, and so produces heat and carbon monoxide ...

www.bbc.co.uk/education/guides/zfsk7ty/revision/4

Learn about the methods of extracting iron and aluminium with BBC Bitesize ... Iron is extracted from iron ore in a huge container called a blast furnace. ... so hot that carbon monoxide can be used, in place of carbon, to reduce the iron(III) oxide: ... (sand) impurities in the haematite, to produce slag - which is calcium silicate.

www.steel.org/making-steel/how-its-made/processes/how-a-blast-furnace-works.aspx

The blast furnace is a huge, steel stack lined with refractory brick, where iron ore, ... Sinter is produced from fine raw ore, small coke, sand-sized limestone and ...

www.gcsescience.com/ex20.htm

Limestone is calcium carbonate (CaCO3) and it is added to the blast furnace to remove the impurities in the iron ore. Calcium carbonate is decomposed by heat  ...

chemistry.elmhurst.edu/vchembook/326steel.html

Historically, most iron ore is converted to iron using a blast furnace, although a ... The three raw materials are added to the top of the blast furnace. ... Impurities in the iron ore such as silicon dioxide react with the limestone to produce slag, ...

www.madehow.com/Volume-2/Iron.html

The most common process is the use of a blast furnace to produce pig iron which ... reducing the carbon content and adding other elements such as manganese ... to produce pig iron in a blast furnace are iron ore, coke, sinter, and limestone.

www.docbrown.info/page04/Mextracta.htm

limestone (calcium carbonate) to remove certain impurities like silica. ... Iron is produced (extracted) in a blast furnace by reducing iron oxides with carbon and it is .... If you 'add up' chemical reactions (ii) and (iii) you get (i), check for yourself.