Aker solutions offers a complete range of services necessary to realize global projects including the provision of process technology integration, design, engineering, projectprogram management, procurement and construction. Blast furnace sizing considerations for incredible india. The novel flash ironmaking process uses gaseous reducing agents such as natural gas, hydrogen, other syngas or a combination thereof. Blast furnace, lkab, pellet product, ironmaking, ebf. This furnace will be the indias largest blast furnace to date. Introduction to the blast furnace enthalpy balance 6. Due to the extremely harsh environment inside the blast furnace, it is difficult. Modern blast furnace ironmaking anintroduction withcontributionsfrom renardchaigneau timvander jenniferwise second edition, 2009. Blast furnace ironmaking pfd bagtype dust bagtype dust remover remover smoke extractor fan smoke extractor fan hot blast heater gravity dust remover blast furnace coal feeder pulverized coal bunker coarse separator raw coal bunker coal mill. The rated capacity of this furnace is 9,500 tons of hot metal per day with pulverized coal injection system of 200 kgthm.
With modern blast furnace ironmaking an introduction the reader has a compact compendium of the blast furnace process available. Kinetics and modeling of ironmaking blast furnace overview the ironmaking blast furnace is a complex multiphase flow reactor. Extensive development work on the use of plasma torches in blast furnace ironmaking was completed in the 1980s. The proposed technology is to be applied to the production of iron as a feed to the steelmaking process, eventually replacing the blast furnace and other alternative ironmaking processes. 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. The ore part of a charge consists of iron ores and concentrates, manganese ores and various types of scrap containing iron.
The technology developers planned to reduce blast furnace coke consumption using electrical energy and large scale coal injection through the tuyeres. Introduction in the steel industry, it is a widely accepted fact that blast furnace productivity rated. This book focuses on the control of the blast furnace process with respect to thermal control, gas flow control and casthouse operation. Equipment and automation of blast furnace ironmaking. Coke is the most important raw material fed into the blast furnace in terms of its effect on blast furnace operation and hot metal. Modern blast furnace ironmaking an introduction pdf. Hot reduction gases injected from lower regions of the furnace ascend, reacting with the descending burden. Limestone and dolomite fluxes used for ironmaking and steel making in the united states originate primarily from michigan. Introduction be extended to large scale simulation of the blast furnace bf is the workhorse of ironmaking process with the current development of technology although there are some alternatives using smelting and direct reduction. Blast furnaces are used continuously and are only shut down when their brick lining needs replacing. Blast furnace is used to reduce the iron ore to iron. Blast furnace ironmaking free download as powerpoint presentation. Blast furnace products and there use size of blast furnace design of blast furnace is evolved through experience.
The world leader in ironmaking solutions primetals technologies. Now there are nearly 700 blast furnace available in world. The principle of blast furnace operational technology and. The blast furnace is a huge, steel stack lined with refractory brick. Through this reaction process, iron ore is reduced into liquid iron that is tapped from the furnace hearth.
A realtime 3d measurement system for the blast furnace burden. Modern blast furnace operation at integrated steel works in japan started in 1901 with the first blowin of higashida no. A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals. Air heated in the blast furnace stoves, is applied from the bottom of the. As a starting point, the blast furnace is seen as a simple iron ore smelter, while gradually the physical, chemical and metallurgical backgroun. The present status and challenges of blast furnace bf ironmaking technology are analyzed, and the developing targets of the contemporary bf ironmaking process are mentioned. It boasts strong technological force in engineering design for construction andor modernization of blast furnaces, hot stoves, pci systems, slag granulation systems, etc.
The iron making blast furnace itself is built in the form of a tall structure, lined with. Mar 06, 2016 introduction and construction blast furnace. Therefore, this section is included as an introduction chapter, we can say as a refresher. Blast furnaces are used to produce pig iron from iron ore for subsequent. Blast furnace an introduction blast furnace is the focus of any integrated steel plant. They are then used to help heat the air blast, required if blast furnace is to reach the high temperatures needed to produce molten iron. With modern blast furnace ironmaking an introduction the reader has a. Extraction of iron in a blast furnace iron is also below carbon in the reactivity series, so therefore carbon can be used to reduce it note. Iron making in mini blast furnace mbf the blast furnace ironmaking process had, until recently, been the unchallenged method of making hot metal on a large scale. This furnace is designed for a twenty year campaign. Primetals technologies has provided blast furnace engineering, project excellence and expertise to customers worldwide for over a century. As the mixture of iron ore, coke and limestone heats, the hot waste gases are collected and cleansed. Ironmaking,blast furnace,china steelmaking,steel business. Iron blast furnace is an immensely complex reactor and running it in an optimized fashion is a very complex task.
Scribd is the worlds largest social reading and publishing site. An introduction to event for the scheme has commonly possible modern blast furnace ironmaking. As a starting point, the blast furnace is seen as a simple iron ore smelter, while gradually the physical, chemical and metallurgical background of the blast. Blast furnace sizing considerations for incredible india dr.
Snclavalin specializes in epcm for all phases of the iron and steel making processes including providing services for coke plants, blast furnaces, casters, industrial furnaces, rolling mills, finishing and coating lines, air pollution control, water pollution control, chemical processing, and bulk material handling systems. The charge, which consists of iron ore, coke and limestone etc. It has gained intellectual property rights and accumulated much experience in the fields of engineering technology for large and medium sized blast furnace, and oversize blast furnace, in particular. During the 1860s, iron producers from the cleveland dist. Ios press ebooks modern blast furnace ironmaking an. The formation of iron and steel the blast furnace 2. Ironmaking technology,blast furnace system,china ironmaking. 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. Historically, iron was produced in japan by a smallscale ironmaking method called the tatara 92 process with iron sand as the main raw material. Modern blast furnace ironmaking 3rd edition pdf for free.
Materials and energy balance in metallurgical processes by prof. The world leader in ironmaking solutions primetals. This is an electronic reprint of the original article. The blast furnace bfbased ironmaking process accounts for more than 70% of carbon. Aug 07, 2017 the novel flash ironmaking process uses gaseous reducing agents such as natural gas, hydrogen, other syngas or a combination thereof. Blast furnace ironmaking a view on future developments. Iron and steel industries consumes enormous amount of energy and contributes significantly in carbon dioxide emission. Comprehensive numerical modeling of the blast furnace. Kobe steel started operation as an integrated steel manufacturing company with the blowingin of. Principle of iron making by blast furnace by a k biswas download free ebooks online. The use of electrical technologies in blast furnace ironmaking.
It is suitable for students of metallurgy as well as. Calculation of blast furnace size is empirical in nature. This is particularly true of the ironmaking blast furnace which the world steel association confirms as the predominant energy consuming. Cisdi supplied the largest number of blast furnaces over 4,000m 3, and is the company which has the experience of epc of blast furnaces. The main challenges in blast furnace ironmaking are currently related to lower coke rates, higher fuelinjection rates, high oxygen rates, high productivity and lowerquality raw materials of. The main challenges in blast furnace ironmaking are currently related to lower coke rates, higher fuelinjection rates, high oxygen rates, high productivity and lowerquality raw materials of varying supply. Iron ore properties blast furnace raw materials, process description, modifications, operational features, environmental performance, pros and cons dri properties, usage, and worldwide production comparison. Danieli corus has enjoyed an incredible journey with indian steel industry over the years. All the three ingredients are crushed into small round pieces and mixed and put on a hopper which controls the input. The following overview provides basic information necessary for a proper understanding of the problem of heat transfer. Within the iron and steel industry, the ironmaking processes are acknowledged to be the focus area when the topic of energy saving arises. The blast furnace ppt 155 extracting iron ppt 490 applying selling techniques. Products ironmaking and steelmaking modern blast furnace. The blast furnace is a hightemperature, pressurized countercurrent reactor with dynamic process conditions.
The authors have very extensive experience as operators as well as consultants to many steel plants worldwide. Use of the blast furnace process 93 began on december 1, 1857 following the construction of a westernstyle blast furnace in kamaishi by t. The 150 year history of the japanese steel industry dates from the first western blast furnace, which was built by t. It is suitable for students of metallurgy as well as for blast furnace operators and management. 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. Blast furnaces are countercurrent chemical reactors, widely utilized in the ironmaking industry. Till 1990, the blast furnace route of ironmaking had about 97% 527mt share of global iron production. Technological development orientation on ironmaking of contemporary blast furnace. 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 mixture of metallic ore, coke, and flux fed into the top. Production of pig iron in a blast furnace 9 scheme of a blast furnace content a blast furnace charge and its treatment a blast furnace charge consists of ore, fluxes and fuel. The introduction of such a raw material is consistent with the production process of the blast furnace, because even during a traditional process, performed by the introduction of coke and. This website provides free medical books this website provides over 0 free medical books and more for all students and doctors this website the best choice for medical students during and after learning medicine. 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 of air sometimes with. Ironmaking plant is an integral part of any steelworks which.
Ulcos the trial of the top gas recycled blast furnace at lkabs. Coke production for blast furnace ironmaking by hardarshan s. The modern blast furnace reconsidered continued from page i sense of american exceptionalism in furnace development and have neglected the influence of european models of furnace design and management. Our technology base covers the entire blast furnace process route from hot blast and raw material handling, through the furnace and casthouse, to gas cleaning and hot metal slag processing. The significance and function of high blast temperature and oxygen enrichedpulverized coal injection for bf are described. Extraction of iron metallurgy blast furnace and reactions. Modeling of burden distribution in the blast furnace doria. Extraction of iron in a blast furnace reduction haematite o. Describes the principles of the blast furnace process and especially the control of the process.
Technological changes in blast furnace iron making in india since last few decades article pdf available in international journal of science and research ijsr 212. Technological development orientation on ironmaking of. Luossavaarakiirunavaara ab lkab is an international hightech minerals. Ironmaking 101 from ore to iron with blast furnaces. Pdf technological changes in blast furnace iron making. Iron is made by reacting iron ore iron oxide and impurities, coke a reductant and limestone caco 3 in a blast furnace iron ores with lower iron content such as taconite are first processed to concentrate the iron level and drive off volatile impurities.
Blast furnace ironmaking is a complicated process due to its sheer size, large throughput and the numerous physical and chemical phenomena. Cisdi is capable of providing technical services covering the entire ironmaking process. Pdf technological changes in blast furnace iron making in. Flash ironmaking process 20170807 industrial heating. The significance and function of high blast temperature and.
Since in blast furnace ironmaking, the ascending gas drives the reduction and melting, gas distribution within the furnace is essential. The purpose of a blast furnace is to reduce and convert iron oxides into liquid iron called hot metal. Within a few years of the introduction, hot blast was developed to the point. Introduction within industry, there is a constant drive to reduce energy costs, reduce emissions and ensure maximum waste energy reuse.
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