• What is the use of limestone in a blast furnace?

    Sep 16, 2008· The formula is CaO + SiO(2) = CaSiO(3) This is molten at blast furnace temperatures and floats on top of the molten iron It is then removed and cooled into hardened slag Thus, the lime from limestone combines with the silica and allows the separation of the iron from the silica impuriti.

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  • Blast Furnace

    Then iron ore, limestone, and coke (a purified carbon fuel derived from bituminous coal) were dumped into the top of the blast furnace by a skip car This mixture of materials takes up to 8 hours to reach the bottom of the blast furnace, where the intense temperatures ignite the coke and melt the limestone.

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  • GCSE CHEMISTRY

    Extraction of Metals Extraction of Iron Chemistry of the blast furnace () Limestone is calcium carbonate (CaCO 3) and it is added to the blast furnace to remove the impurities in the iron ore Calcium carbonate is decomposed by heat in the furnace to give calcium oxide and carbon dioxide This is called thermal decomposition (see examples of other carbonates).

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  • Limestone and dolomite flux and their use in iron and

    May 08, 2013· basic, dolomite, flux, limestone, neutraliziing, slag, Limestone and dolomite flux and their use in iron and steel plant Limestone is a naturally occurring mineral The term limestone is applied to any calcareous sedimentary rock consisting essentially of carbonat The ore is widely available geographically all over the world.

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  • Blast furnace

    Basically, the blast furnace is a countercurrent heat and oxygen exchanger in which rising combustion gas loses most of its heat on the, The stack is kept full with alternating layers of coke, ore, and limestone admitted at the top during continuous operation Coke is ignited at the bottom and.

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  • Blast furnace : HOW A BLAST FURNACE WORKS:

    Jan 18, 2016· The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called “ hot metal” The blast furnace is a huge, steel stack lined with refractory brick , where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom.

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  • LEGO IDEAS

    Raw materials (iron ore, cokes, limestone) are hauled up a ramp in a container by a winch The contents are then dropped into the furnace/oven The hot blast is directed into the furnace through nozzles near the base The hot blast temperature can be from 900 °C to 1300 °C (1600 °F to 2300 °F).

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  • Alternate Cementitious Materials

    Ground granulated blast furnace slag is produced in a blast furnace where iron ore is converted into iron This slag forms when the silica and alumina compounds of the iron ore combine with the calcium of the fluxing stone (limestone and dolomite).

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  • Metal extraction

    Limestone; Air; Each of the raw materials is necessary for the production - click to see its purpose The blast furnace 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.

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  • How Do I Compare Electric Arc Furnaces and Blast Furnaces?

    Blast furnaces force air into the bottom of the furnace into a heated stove area The heat from the blast furnace's stove area converts the forced air into heated air to melt metal Compare the feasibility of obtaining steel scrap for an electric arc furnace or iron ore and limestone for a blast furnace.

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  • Blast furnace

    This happens in a blast furnace A blast furnace is roughly 50m high, and lined with heat-resistant bricks The haematite (the ‘charge’) is loaded into the blast furnace, along with coke (heated coal) and limestone A blast of hot air is sent through two tuyeres near the bottom of the furnace.

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  • LEGO IDEAS

    Raw materials (iron ore, cokes, limestone) are hauled up a ramp in a container by a winch The contents are then dropped into the furnace/oven The hot blast is directed into the furnace through nozzles near the base The hot blast temperature can be from 900 °C to 1300 °C (1600 °F to 2300 °F).

    【Service Online】
  • Blast furnace

    Basically, the blast furnace is a countercurrent heat and oxygen exchanger in which rising combustion gas loses most of its heat on the, The stack is kept full with alternating layers of coke, ore, and limestone admitted at the top during continuous operation Coke is ignited at the bottom and.

    【Service Online】
  • Blast furnace

    Ore, limestone and carbon in the form of coke are put into the top of the blast furnace in layersAt the same time, hot air called "wind" is blown inside the furnace Special nozzles called "tuyeres" are used to put the air in the furnace The nozzles are at the bottom of the furnace This process is called "blasting" It is why it is called a "blast furnace".

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  • what is the role of limestone in extraction of iron??

    Iron is extracted from its ore, haematite, in a blast furnace The ore is fed into the top of the furnace along with coke and limestone , The limestone decomposes in the hot furnace.

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  • How does the blast furnace work?

    How does the blast furnace work? The Blast Furnace is a large steel structure about 30 metres high It is lined with refractory firebricks that can withstand temperatures approaching 2000 o C The furnace gets its name from the method that is used to heat it Pre-heated air at about 1000 o C is blasted into the furnace through nozzles near its base The largest Blast Furnaces in the UK.

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  • What is the use of limestone in a blast furnace?

    Sep 16, 2008· The formula is CaO + SiO(2) = CaSiO(3) This is molten at blast furnace temperatures and floats on top of the molten iron It is then removed and cooled into hardened slag Thus, the lime from limestone combines with the silica and allows the separation of the iron from the silica impuriti.

    【Service Online】
  • Blast Furnace

    Then iron ore, limestone, and coke (a purified carbon fuel derived from bituminous coal) were dumped into the top of the blast furnace by a skip car This mixture of materials takes up to 8 hours to reach the bottom of the blast furnace, where the intense temperatures ignite the coke and melt the limestone.

    【Service Online】
  • Blast furnace : HOW A BLAST FURNACE WORKS:

    Jan 18, 2016· The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called “ hot metal” The blast furnace is a huge, steel stack lined with refractory brick , where iron ore, coke and limestone are dumped into the top, and preheated air is blown into the bottom.

    【Service Online】
  • What are the balanced chemical eqations for the reactions

    A blast furnace is used to extract iron from iron ore Iron ore, coke and limestone are put into the blast furnace Coke is a form of carbon that is burned to provide heat and is also involved in.

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  • What is a Blast Furnace?

    The main purpose of a blast furnace is to convert the iron ores, mined in the form of hematite or magnetite, to pig iron The blast furnace is in use after the iron ores have been converted into iron-rich pellets, and the coke and limestone prepared in the considerable amounts.

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  • Blast furnace

    Process Ore, limestone and carbon in the form of coke are put into the top of the blast furnace in layersAt the same time, hot air called "wind" is blown inside the furnace Special nozzles called "tuyeres" are used to put the air in the furnace The nozzles are at the bottom of the furnace This process is called "blasting" It is why it is called a "blast furnace".

    【Service Online】