why limestone is charged in blast furnace

  • UNITED STATES

    pig iron simultaneously in a blast furnace could be easily accomplished by simply adding an ap propriate quantity of limestone to the charge and enriching the air blast with oxygen. There, however, are obstacles to effecting the produc.


    Chat Now
  • What Goes on in the Blast Furnace? - Penn State University

    The founder orders the fillers (or filler and a helper) to "charge" the furnace by emptying about twenty baskets of clean charcoal Meanwhile a blast of cold air is being forced into the bosh from below, furnishing oxygen to intensify the heat and


    Chat Now
  • HowStuffWorks "Creating Iron"

    Creating Iron. The more advanced way to smelt iron is in a blast furnace. A blast furnace is charged with iron ore, charcoal or coke (coke is charcoal made from coal) and limestone (CaCO3). Huge quantities of air blast in at the bottom of the


    Chat Now
  • Blast Furnace Slag - Material Description - User Guidelines for

    ORIGIN. In the production of iron, iron ore, iron scrap, and fluxes (limestone and/or dolomite) are charged into a blast furnace along with coke for fuel. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten


    Chat Now
  • Full text of "Models of blast furnaces for smelting iron" - Inter Archive

    It is called a blast furnace because its operation is main- tained by a blast of air blown in from below. Its prod- uct is pig or cast As the charge wastes away below it is replenished by additions of ore, limestone and fuel from above. The model


    Chat Now
  • blastfurnace - pgsteelcompany - Google Sites

    This is the basic chemical reaction in the blast furnace; it has the equation: Fe2O3 + 3CO = 3CO2 + 2Fe. The limestone in the furnace charge is used as an additional source of carbon monoxide and as a flux to combine with the infusible


    Chat Now
  • UG-Mat Blast Furnace Slag | Recycled Materials Resource Center

    In the production of iron, iron ore, iron scrap, and fluxes (limestone and/or dolomite) are charged into a blast furnace along with coke for fuel. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron


    Chat Now
  • How steel is made - a summary of a Blast Furnace

    It is then smelted in blast furnaces where the impurities are removed and carbon is added. Iron ore and other iron bearing materials, coke and limestone are charged into the furnace from the top and work their way down, becoming hotter as


    Chat Now
  • Steel Industry :: Nordkalk

    Pellets and/or sinter are charged into the blast furnace together with limestone and coke. All raw materials smelt down forming pig iron and slag. Reliable raw materials, like good quality lime products, are essential for maintaining efficient blast


    Chat Now
  • steel mill - Michigan State University

    Modern steelmaking employs blast furnaces, like the one seen below, that are merely refinements of the furnaces used by the old The process of refining molten iron with blasts of air was accomplished by the British inventor Sir Henry Bessemer who developed the Bessemer furnace, . and a pair of round hoppers closed with bell-shaped valves through which the charge is introduced into the furnace.


    Chat Now
  • The Blast Furnace - Steelemart

    burning the coke in a blast furnace to melt the iron ore and using limestone to help drive off impurities in the ore, thus iron ore, and limestone are continuously conveyed and poured, or charged, into the top of a giant, 10-story blast furnace.


    Chat Now
  • Pig-iron production - INTERSTAHL Stahlhandel

    Depending on the type of impurities in the iron different fluxes are added, for example limestone (for siliceous iron ore) or feldspar (for The pig-iron is produced in a blast-furnace which typically consists of a cylindrical steel hull and a refractory lining on the inside. The raw materials are charged through two openings.


    Chat Now
  • Chapter 10, The Manufacture of Pig Iron in the Blast Furnace

    23 May 2012 together into a cake so that they can be charged into the blast furnace satisfactorily. For best results Miscellaneous raw material Cold-blast air Hot-blast air Blast furnace gas Steam Hot metal Hot slag Flue dust Sludge. Sinter.


    Chat Now
  • Metal extraction - IBChem

    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 air (containing oxygen) making carbon monoxide gas. This gas is very reactive


    Chat Now
  • METALLURGICAL LIMESTONE

    or furnace stone. Approximately 900 pounds of limestone is used for every long ton of pig iron produced in the blast furnace; but this important constituent of the charge receives little attention compared with the intensive study of ores and fuels,


    Chat Now
  • Blast furnace - Wikipedia, the free encyclopedia

    In a blast furnace, fuel, ore, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air .. Lead blast furances are often open-topped rather than having the charging bell used in iron blast furnaces.


    Chat Now
  • In a blast furnace why are the coke and limestone needed

    Why is limestone added to the blast furnace during the extraction of iron? (Extraction of Iron in a Blast Furnace: Step 1 and Step 2)Coke reacts with oxygen from the air to form carbon dioxide and a lot Why nut coke charge in blast furnace?


    Chat Now
  • EXTRACTION OF IRON- EXTRACTION OF IRON FROM HAEMATITE

    Air. Slag. Iron. Blast Furnace. The charge. The charge consists of : roasted ore. Coke Limestone. Details of reduction. The charge is fed into the furnace from its top. A preheated blast of air at 1500OC, is blown into the furnace under pressure


    Chat Now