Blastfurnace production article about blastfurnace. Develop technologies to control reactions for reducing iron ore. The reactions which occur inside the furnace are shown at the right. The types of blast furnace that are obtainable in the world of today include nonferrous blast furnace, iron and lead blast furnace. The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called hot metal. Blast furnace simple english wikipedia, the free encyclopedia. Unlike the iron blast furnace, which requires large capital investments. Technological changes in blast furnace iron making in india since last few decades.
Pelletizing a pellet plant contains a series of balling drums where the iron ore concentrate is formed into soft pellets, in much the same manner that one rolls a snowball, to make a pellet about the size of a marble between 14 and 12. While you will be able to view the content of this page in your current browser, you will not be able to get. Blast furnace in bsp free download as powerpoint presentation. The following two reactions are important in the blast furnace production of iron metal from iron ore fe2o3. Cas phases are commonly found in blast furnace slags,58 occurring as. Heavy industry at night with a blast furnace dominating the scene blast furnace.
The molten slag, which absorbs much of the sulfur from the charge, comprises about 20. Reports upon blast furnace field tests, the iron and steel institute, special report no. Step 2a the blast furnace the sinter is added through a hopper at the top of the blast furnace. This page is best viewed in an uptodate web browser with style sheets css enabled. Pdf technological changes in blast furnace iron making in. They can be up to 60 metres 200 ft tall and 15 metres 49 ft in diameter. As the mixture of iron ore, coke and limestone heats, the hot waste gases are collected and cleansed. Start studying the blast furnace and extraction of iron from its iron ore. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Blast refers to the combustion air being forced or supplied above atmospheric pressure in a blast. In a blast furnace, fuel, ores, and flux are continuously supplied through the top of the furnace, while a hot blast of air sometimes with oxygen enrichment is blown into the lower section of the furnace through a series of pipes called tuyeres, so that the chemical reactions take place throughout the furnace as the material falls downward.
Pdf technological changes in blast furnace iron making. The carbon monoxide reduces the iron in the ore to give molten iron. The coke carbon burns with oxygen to produce carbon dioxide. Blast furnaces are also called high ovens a blast furnace is usually built with a steel case and bricks made of magnesia inside the case. The purpose of a blast furnace is to reduce and convert iron oxides into liquid iron called hot metal. In the blast furnace, reduction of iron oxides takes place in different temperature ranges. The blast furnace, based on the oldest principle of copper production, was. Jun 24, 2015 for the love of physics walter lewin may 16, 2011 duration. Water is also frequently used for scrubbing of blast furnace top gases, and less often for fracturing breaking up of hot slag. Choose from 252 different sets of blast furnace flashcards on quizlet. Once a blast furnace is started it will continuously run for four to ten years with only short stops to perform planned maintenance. There are many zones that take place in blast furnace. How many reactions take place in the blast furnace. Now there are nearly 700 blast furnace available in world.
How many reactions take place during the removal of the impurities. The ancient chinese blast furnace by finlay edwards on. Students can also add the equations in the final square. There are different ways in which the raw materials are charged into the blast. Blast furnace word and symbol equation cards kfb teaching. Students annotate each stage to explain what is happening during the extraction of iron from the. Extracting iron iron and aluminium gcse chemistry single. Optimizing blast furnace operation to increase efficiency. Temperatures are shown for isotherms inside the furnace. They are then used to help heat the air blast, required if blast. Blast furnace water is mainly required for water jacket cooling of the critical tuyeres and bosh areas. Then the symbols for the symbol equation can be added below. These zones have the particular time and temperature ranges for their occurrences, that is to say that it depends on the metal to be heated and melted.
Answers the blast furnace reactant purpose formula coke burns to produce heat and reducing agent c iron ore contains iron oxide which is reduced to iron fe 2 o 3 hot air to keep coke burning o 2 n 2 limestone remove impurities as slag caco 3 gridlock answer 1 reactant purpose coke iron ore to keep coke burning remove impurities as slag. A powerpoint which goes through the stages of the blast furnace, including the equations. A blast of air contained within the blast furnace itself helps to intensify the degree of heat, expediting the smelting process. Passivity, in which there is no reaction because of kinetic. Iron ore, coke and limestone are put into the top, and preheated air is blown into the bottom. The final accuracy of the mass balances is dependent on which of the other gas. Optimizing blast furnace operation to increase efficiency and. Both the slag and iron are drained from the bottom of the furnace. A blast furnace also represents a huge overhead cost because, once fired up, it typically runs for six to 10 years, giving an operator little flexibility. Learn blast furnace with free interactive flashcards. The blast furnace bisb chemistry powerpoint presentation.
Blast furnaces are used continuously and are only shut down when their brick lining needs replacing. For the love of physics walter lewin may 16, 2011 duration. Blast furnace is a furnace for smelting of iron from iron oxide ores hematite, fe2o3 or magnetite, fe3o4. Organisation of the materials the smart notebook file is saved as ks4 blast furnace. Krivoy rog ukraine, blast furnace no ninth blast furnace in ostrava city. This helps you give your presentation on the blast furnace bisb chemistry in a conference, a school lecture, a business proposal, in a webinar and business and professional representations.
Blast furnace stock image by scanrail 7 209 blast furnace stock photography by scanrail 20 465 blast furnace stock photo by corepics 7 404 blast furnace picture by scanrail 2 244 liquid metal from blast furnace stock image by scanrail 12 755 blast furnace equipment stock photography by scanrail 3 263 molten hot steel pouring and. This helps you give your presentation on the blast furnace in a conference, a school lecture, a business proposal, in a webinar and business and professional representations. Blast furnace reactions carbon oxidised by hot air. The blast furnace is an efficient hightemperature reactor in which hot reducing gases formed from the combustion of coke and supplementary fuels in the raceway zone travel countercurrent to the burden materials including iron ore, coke and fluxes charged in from the top. Oct 04, 2019 the types of blast furnace that are obtainable in the world of today include nonferrous blast furnace, iron and lead blast furnace. Blast furnace is a counter current heat and mass exchanger in which reduction and smelting of metallic mineral takes place. Apr 05, 2016 a blast furnace also represents a huge overhead cost because, once fired up, it typically runs for six to 10 years, giving an operator little flexibility.
The blast furnace bf is the most widely used ironmaking. The method used in blast furnaces have been used since the 1500s. Chemistry elements lying at top of reactivity series are more reactive than elements lying below them in series. Students annotate each stage to explain what is happening during the extraction of iron from the blast furnace. Calculation of blast furnace size is empirical in nature. Blast furnace products and there use size of blast furnace design of blast furnace is evolved through experience. In the blast furnace, there are several chemical reactions taking place. Blast furnaces operate on the principle of chemical. The furnaces were of the steam, hotblast coke type, constructed entirely of stone and rectangular in shape. This helps you give your presentation on the blast furnace bisb chemistry in a conference, a school lecture, a business proposal, in a webinar and business and. Reactions in which oxygen is removed are called reduction reactions.
Get an answer for what is the equation of the exothermic reaction in a blast furnace. The formation of iron and steel the blast furnace 2. Ppt the blast furnace powerpoint presentation free to. Blast furnaces are devices that are used in the process of iron smelting. It consists primarily of silicates, aluminosilicates, and calciumaluminasilicates. Blast furnace slag is a nonmetallic coproduct produced in the process in the production of iron from iron ore or iron scrap.
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron. Step 2 the blast furnace the outer case is a water cooled steel casing that provides the main support for the 30 m high furnace. Co2g the limestone breaks down to form carbon dioxide. The blastfurnace industry took shape as a result of the development of the blooming processthe. A blast furnace is a special type of furnace for smelting iron from ore. This can be used in conjunction with the blast furnace story board. The blast furnace the activities are related to the work in the ks4 reactionsreactivity topic. The co 2 then reacts with more coke to give carbon monoxide.
If you scroll past the diagram you can read about the blast furnace process. The raw materials are brought to the top of the blast furnace via a skip car powered by winches or conveyor belts. Hot air is blown from the bottom of the furnace and coke is burnt to give temperature upto about 2200k in the lower portion itself. The rumble of energy drones on in the background and sets.
Theory and practice presents theoretical, experimental, and operational evidence about the iron blast furnace as well as a mathematical description of its operation. The ancient chinese blast furnace by finlay edwards on prezi. A major advance in bf ironmaking has been the use of pulverized coal which partially replaces. The use of combinedblast is the main way to improve the. The ironmaking blast furnace bf is an efficient chemical reactor for producing liquid iron from solid iron ore, where the solids of coke and iron ore are charged in alternative layers and. Powerpoint is the worlds most popular presentation software which can let you create professional the blast furnace bisb chemistry powerpoint presentation easily and in no time. Powerpoint is the worlds most popular presentation software which can let you create professional the blast furnace powerpoint presentation easily and in no time. Creating steel from lowgrade iron ore requires a long process of mining, crushing.
A blast furnace is usually built with a steel case and bricks made of magnesia inside the case. Minerals and ironmaking reactions in blast furnaces. Feb 27, 2012 a blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron. The furnaces were of the steam, hot blast coke type, constructed entirely of stone and rectangular in shape. Gordon2 1department of metallurgy, ural federal university, russia 2department of metallurgy, hatch, canada abstract the world production of hot metal and pig iron in 2012 reached 1. Pig iron was known four to six centuries before the common era. Blast refers to the combustion air being forced or supplied above atmospheric pressure in a blast furnace, fuel, ores, and flux are continuously supplied through the top of the furnace, while a hot blast. The atmosphere on sunrise light in bucharest blast furnace. Iron ore processing for the blast furnace courtesy of the national steel pellet company the following describes operations at the national steel pellet company, an iron ore mining and processing facility located on the mesabi iron range of minnesota. The blast furnace is a huge, steel stack lined with refractory brick.
Dust catcher power plant process flow diagram for blast furnace alloy bar mill screw conveyor dust septum valve primary gas cleaning dust to clean gas main. Free download the blast furnace powerpoint presentation. A powerpoint which goes through the stages of the blast furnace, including the equations to go with the stages. The use of combinedblast is the main way to improve the energy efficiency of blast furnaces n. Blast volume 0 m3hr these errors arise because the mass balances are closed on the assumption that the measured nitrogen in the top gas is representative of the total nitrogen input to the furnace nitrogen not having any part in the furnace reactions. Forms collide, light competes and liquids shift in this other world that looks familiar but feels unreal. Several reactions take place before the iron is finally produced.
In a blast furnace, fuel, ore, and flux limestone are continuously supplied through the top of the furnace, while air sometimes with oxygen enrichment is blown into the bottom of the chamber, so that the chemical reactions take place throughout the furnace as the material. What is the equation of the exothermic reaction in a blast. Blast furnace stock photos download 3,446 royalty free. A blast furnace works by blasting hot air up through the furnace while fuels, limestone, and ore move continuously through the top of the furnace. The charge is placed a giant chimney called a blast furnace. Oxygen in the air reacts with coke to give carbon dioxide. Chemistry elements lying at top of reactivity series are more reactive than elements. Characterization of blast furnace sludge with respect to heavy metal distribution. Gordon and breach science publishers, 1969 blast furnaces 1040 pages. Blast furnace, a vertical shaft furnace that produces liquid metals by the reaction of a flow of air introduced under pressure into the bottom of the furnace with a. Blast furnace extraction of iron from blast furnace class 12 ncert chemistry blast furnace working animation extraction of iron metallurgy of iron. Reports upon blastfurnace field tests, the iron and steel institute, special report no. Extraction of iron metallurgy blast furnace and reactions. Aug 07, 2011 the following two reactions are important in the blast furnace production of iron metal from iron ore fe2o3.
Today there are three kinds of blast furnaces used to create metals. The heat created in the furnace makes it possible to produce the iron from iron oxide ores. Blastfurnace production the production of pig iron by the reduction smelting of iron ores or pelletized ironore concentrates in blast furnaces. Ppt blast furnace reactions powerpoint presentation, free. The burning of coke therefore supplies most of the heat required in the process. Coke, limestone and iron ore are poured in the top. However, some homogenous reactions may also occur among the gaseous species in the reducing gas mixture. Pupils cut out and put the words for the word equations in the right place. State the chemical equation for when coke react with the air, and state the importance of this reaction. Marco franco silo industrial steel iron oven blast furnace factory landschaftspark, duisburg, germany.
The inside of the original furnaces were lined with firebrick which was imported from england. Blast refers to the combustion air being forced or supplied above atmospheric pressure. Sheet describing the 3 main reactions in the blast furnace. The blast furnace is around 30 metres high and lined with fireproof bricks. Copper lossin major reference works wiley online library. On the diagram below of the blast furnace, just click on the labels for a more detailed description. The iron ore concentrate is now mixed and ready for the pelletizing process. Atmospheric carbon capture performance of legacy iron and steel. By malik mubashir university of the punjab lahore, pakistan 2.
A blast furnace is a gigantic, steel stack lined with refractory brick where the concentrated iron ore, coke, and limestone are dumped from the top, and a blast of hot air is blown into the bottom. All the three ingredients are crushed into small round pieces. Chemical and mineralogical characterization of blastfurnace. 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. This book includes a set of equations that accurately describe stoichiometric and enthalpy balances for the process and which are consistent with observed. Modeling of iron ore reactions in blast furnace request pdf. Can be used in conjunction with blast furnace powerpoint. The blast furnace and extraction of iron from its iron ore. Feb 09, 2012 can be used in conjunction with blast furnace powerpoint. No one really knows, but du shi, a chinese engineer developed the idea to use a modified water wheel to power the blast furnaces it improved farm tools, and led to the invention of the plough. A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Stateoftheart computational fluid dynamics model optimizes fuel rate in. Silo of an industrial site of a steel blast furnace of the old and slag pot blast furnace landschaftspark, duisburg, germany.