Introduction the purpose of the basic oxygen steelmaking bos process is to refine the hot metal produced in the blast furnace into raw liquid steel, which may be subsequently refined in the secondary steelmaking shop. The molten iron is mixed with recycled steel scrap and further processed in a basic oxygen furnace to make steel. Along with the liquid iron that was produced in the blast furnace, recycled scrap steel is also added to the oxygen furnace. May 10, 2018 found in every corner of the planet, steel has come to be one of our most used materials for building a sturdy product. Performed a basic oxygen furnace ladle increase capacity study using simulation software. The top blown basic oxygen furnace is equipped with the water cooled oxygen for blowing oxygen into the melt through 46 nozzles. The vast majority of steel manufactured in the world is produced using the basic oxygen furnace. Carbon is oxidised to carbon monoxide and much of the carbon in the metal escapes as this gas. In a further process step, the socalled basic oxygen steelmaking, the carbon is oxidized by. A simulation study of basic oxygen furnace operations. Basic oxygen furnace kumas has detailed knowledge of the requirements of steelmaking industry. Basic oxygen steelmaking and secondary steelmaking integrated. Simulation modeling process improvement services cleveland, ohio.
Basic oxygen furnace model railroader magazine model. The majority of steel manufactured in the world is produced using the basic oxygen furnace. Secondary steelmaking involves refining of the crude steel before casting and the various operations are normally carried out in ladles. Up to 1709, furnaces could only use charcoal to produce iron. Today, both are almost extinct, replaced by electric furnaces and by basic oxygen furnaces. Understanding dephosphorization in basic oxygen furnaces bofs. Basic oxygen steelmaking primary steelmaking 3d model by.
Basic oxygen furnace water filtration solutions the molten iron produced in the blast furnace must be processed further in order to produce steel. Thomas4 optical microscopy, total oxygen measurements and slime tests have been conducted to quantify. In the bof, oxygen gas is injected into the molten liquid to initiate chemical reactions that release additional impurities. Utilization of basic oxygen furnace bof slag in the. This being a low end use, a study was conducted to examine the possibility of converting the slag into a hydraulic binder. In this simulation, you decide the levels of scrap and alloy additions to make. The watercooled oxygen lance or supersonic oxygen jet lance with specially designed copper lance tip nozzle is an important tool used during basic oxygen steelmaking process. Experienced engineers and skilled workers coordinated efforts to collapse a massive steelmaking structure. Get right on floor of our facility as you watch the process in our basic oxygen furnace a steel making method in which pure oxygen is blown. The basic oxygen furnace bof is a vessel used to convert pig iron, of about 94 percent iron and 6 percent combined impurities such as carbon, manganese, and silicon, into steel with as little as 1 percent combined impurities. Basic oxygen furnace blogs, comments and archive news on. Evaluated capacity impact of increasing the ladle from 225 to 240 tons.
Primary steelmaking involves converting liquid iron from a blast furnace and steel scrap into steel via basic oxygen steelmaking, or melting scrap steel or direct reduced iron dri in an electric arc furnace. Dmitri kopeliovich basic oxygen furnace bof is a steel making furnace, in which molten pig iron and steel scrap convert into steel due to oxidizing action of oxygen blown into the melt under a basic slag. Aug 09, 2014 powtoons animation templates help you create animated presentations and animated explainer videos from scratch. Anyone can produce awesome animations quickly with powtoon, without the cost or. Oxygen flow commonly reaches 200280 ft3 mint 68 m3 mint. Basic oxygen furnace bof with continuous caster process model. Basic oxygen furnace animation the basic oxygen furnace process is a method of primary steelmaking in which carbonrich hot metal, delivered by the blast furnace, is made into steel. The basic oxygen process basic oxygen furnace, basic oxygen steelmaking, basic oxygen converter is the most powerful and effective. A builtin video editor allows for basic actions like video cuts and. Modern furnaces will take a charge of iron of up to 400 tons and convert it into steel in less than 40 minutes, compared to 1012 hours in an open hearth furnace.
Overlimit zinc loadings to blast furnaces might damage blast furnace refractory materials, and hence shorten blast furnace campaign life. Considering the priceperformance optimization, our refractory experts gives customized engineering, design and supervisory services to our customers. Epa450382005a revised standards for basic oxygen process furnaces background information for proposed standards emission standards and engineering division u. Basic oxygen furnace bof slag is a major waste product generated during the steelmaking process. Revised standards for basic oxygen process furnaces. Basic oxygen furnace bof the basic oxygen furnace is the process in which a mixture of scrap 25 to 30 percent and hot metal 75 to 70 percent from the blast furnace is exposed to oxygen blown at a high velocity into the. It is used to blow pure oxygen at supersonic speeds over hot metal in a furnace, which ignites the carbon dissolved in steel, and converts it into carbon dioxide and. Basic oxygen steelmaking simulation steeluniversity. Identified bottleneck operations and provided recommendations. High zinc content in solid wastes from basic oxygen furnace steelmaking offgas cleaning systems is one of the main barriers for source recycling of the solid wastes back into ironmaking and steelmaking process. How steel is made using the basic oxygen steelmaking process. In the basic oxygen furnace, hot metal from the blast furnace is converted into steel.
After charging, the furnace is blown by blasting oxygen through a lance that is lowered into the molten metal. Eaton engineers draw on the experience of industry leading names including hydrokraft, vickers, aeroquip, and waltersheid to create solutions that harness the. The basic oxygen steel making process is as follows. Powtoons animation templates help you create animated presentations and animated explainer videos from scratch. Basic oxygen furnace bof royersford modular model railroaders. The basic oxygen furnace bof is a refractorylined, tiltable converter into which a vertically movable, watercooled lance is inserted to blow oxygen through nozzles at.
Two types of furnaces that create steel are the basic oxygen furnace and the electric arc furnace, each of which have their own set of pros and cons. A heat, or batch, begins with the furnace structure itself, i. The purpose of the basic oxygen steelmaking bos process is to refine the hot metal produced in the blast furnace into raw liquid steel, which may be subsequently refined in the secondary steelmaking shop. The basic oxygen furnace bof is a refractorylined, tiltable converter into which a vertically movable, watercooled lance is inserted to blow oxygen through. The resulting silica, iron oxide and maganese oxide react with fluxes charged into the vessel and the refractory lining of the furnace forming. However, wood which is what charcoal is made from was becoming more expensive, as forests were being cleared for farmland and timber.
Primary deoxidation of basic oxygen furnace steel by means. S environmental protection agency office of air, noise, and radiation office of air quality planning and standards research triangle park, north carolina 27711 december 1982. Basic oxygen furnace bof steel making or basic oxygen furnace steelmaking bos or linzdonawitzverfahren steelmaking or the oxygen converter process. A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals. Basic oxygen steelmaking bos makes steel from blast furnace iron and up to 20% of scrap metal. Basic oxygen furnace based steelmaking processes and cleanliness control at baosteel l. As oxygen is injected into a basic oxygen furnace, carbon, silicon,manganese and iron are oxidized a more complete description of b. The container is lined with alkaline refractory materials such as magnesite and burnt lime.
More than half the worlds steel is produced in the basic oxygen process bop, which uses pure oxygen to convert a charge of liquid blastfurnace iron and scrap into steel. The refractory is necessary for the vessel to withstand the extreme temperatures and high level of oxidation that takes place in the basic oxygen furnace. Watercooled oxygen lance for bof and eaf manufacturer and. Bulk oxygen displacement on a basis of per mole of deoxidant added, carbon would remove more oxygen than what aluminium could do, due to the lower molecular mass fraction of oxygen in the reaction product carbon monoxide co, compared to that in alumina al2o3. Mar 07, 20 basic oxygen furnace for steel schematic which used after the blast furnace. Jan 19, 2008 this is a recollection of how i kitbashed a basic oxygen furnace bof facility in ho scale back in 1997, starting with a pair of walthers electric furnace building kits and adding a large rectangular building in behind them. Basic oxygen steelmaking bos is a primary steelmaking method in which the highcarbon molten pig iron is converted to steel. Basic oxygen furnace water filtration solutions orival. The metal in the ladle is sent directly for basic oxygen steelmaking or to a pretreatment stage. Below you can see a diagram of the furnace with its main parts labeled.
It is also known as the linzdonawitz steelmaking process or the oxygen conversion process. Carbon is oxidised to carbon monoxide and much of the carbon in the metal escapes as. In india and in most industrial countries, the use of bof slag as a road ballast and land filler has had a very long history. This tutorial shows how tu use the integrated basic oxygen steelmaking and secondary steelmaking simulator for steelchallenge. Basic oxygen furnace bof steel making or basic oxygen furnace steelmaking bos or linzdonawitzverfahren steelmaking or the oxygen converter process is a method in which both molten pig iron and steel scrap are converted into steel with the oxidizing action of oxygen blown into the melt under a basic slag. Iron contains impurities in the form of silicon, phosphorus, sulfur, and manganese. Molten pig iron sometimes referred to as hot metal from a blast furnace is poured into a large refractorylined container called a ladle. Create animated videos with the best free animation software. Basic oxygen furnaces efficient, reliable, highcapacity eaton hydraulic systems are rapidly replacing heavy, maintenance intensive electromechanical components around the world. Pure oxygen is then blasted into the furnace at supersonic speeds via an oxygen lance that is lowered from the top. Oct 20, 20 the basic oxygen furnace the basic oxygen steelmaking process is the uks major method for making steel. Basic oxygen furnace animation the basic oxygen furnace process is a method of primary steelmaking in which carbonrich hot metal.
Furthermore, the work aimed at increasing knowledge on measurements and phenomena in the. Basic oxygen furnace lances definition of critical service the steelmaking industry has been a staple of the american economy for generations, and paramount in its role is the development and industrialization of our nation. If you click on the parts you will be taken to an explanation of them. The target in this thesis was to study selected special measurements in a basic oxygen furnace bof and develop a model to predict the steel temperature at the end of the oxygen blow. Owing to the continuous deterioration in the quality of iron ore and scrap, there is an increasing focus on improving the basic oxygen furnace bof process to. Basic oxygen steelmaking this module includes a simulation of basic oxygen steelmaking, one of the two main steelmaking processes. Recycling of basic oxygen furnace steelmaking dust by in. Basic oxygen steelmaking article about basic oxygen. Basic oxygen furnace based steelmaking processes and. Basic oxygen furnace latest breaking news, pictures, videos, and special reports from the economic times. Explore the basic oxygen steelmaking simulation to convert molten iron and recycled steel into new steel. Modern furnaces will take a charge of up to 350 tonnes and convert it into steel in less than 40 minutes.
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