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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/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.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.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  ...

mypchem.com/myp10/myp10_htm/metal_extraction.htm

The iron ore, coke and limestone ("charge") is fed into the blast furnace from the top. Once inside the hot furnace the coke reacts with the blast of air (containing oxygen) making carbon monoxide ... To do this limestone is added to the charge.

www.docbrown.info/page04/Mextracta.htm

Iron is produced (extracted) in a blast furnace by reducing iron oxides with carbon .... (3) Calcium carbonate (a base) is then added to remove the acidic oxide ...

sciencepark.etacude.com/lzone/reactivity/blast_furnace.php

The blast furnace Back to reactivity page. blast furnace. The raw materials ( haematite, coke and limestone) are fed into the top of the furnace. Hot air is blasted ...