Basic oxygen furnace bof the basic oxygen furnace process uses 25 to 35 percent old steel to make new steel. Basic oxygen furnace how is basic oxygen furnace abbreviated. From the 1960s, when the japanese economy grew rapidly and faced more competition from american and european firms, private firms began to spend more on. The furnace needs no heating because the oxygen combines very exothermically with the impurity elements, carbon, silicon, manganese and phosphorus. Application of oxygen enrichment in hot stoves and its. Epa450382005a revised standards for basic oxygen process furnaces background information for proposed standards emission standards and engineering division u. Basic oxygen furnace based steelmaking processes and. Basic oxygen steelmaking article about basic oxygen. The recycling of basic oxygen furnace bof slag is largely limited by its free lime and free magnesia content leading to highly problematic swelling, preventing civil engineering applications. Blowing oxygen through molten pig iron lowers the carbon content of the alloy and changes it into lowcarbon steel. The scheme of a basic oxygen furnace bof is presented in the picture. The vast majority of steel manufactured in the world is produced using the basic oxygen furnace.
An energy efficiency analysis of an industrial reheating furnace and an implementation of efficiency enhancements methods enes kilinc1, durmus, kaya2, fatma canka kilic3, muharrem eyidog. 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. Evaluation of dust generated from basic oxygen furnace steel. You might be looking for more complete information of what is happening with respect to your furnace atmosphere. A brief discussion of the process is included in the following paragraphs. Pdf geotechnical properties of fresh and aged basic. Basic oxygen steelmaking also known as linzdonawitzsteelmaking or the oxygen converter process is a method of primary steelmaking in which carbon rich. Recycling of basic oxygen furnace steelmaking dust by in. Control of slopping inbasic oxygen steelmaking by george k. It is also known as the linzdonawitz steelmaking process or the oxygen conversion process. Basic oxygen furnace based steelmaking processes and cleanliness. If you click on the parts you will be taken to an explanation of them. Typical basic oxygen furnace has a vertical vessel lined with refractory lining. 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.
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. Japan imported basic oxygen furnace method from austria. 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 steelmaking bos is a primary steelmaking method in which the highcarbon molten pig iron is converted to steel. The oxygen steelmaking process is one of the most common and efficient steel production methods. This being a low end use, a study was conducted to examine the possibility of converting the slag into a hydraulic binder. Below is a picture that displays a simplified version of the bos process. After charging, the furnace is blown by blasting oxygen through a lance that is lowered into the molten metal. Basic oxygen furnace kumas has detailed knowledge of the requirements of steelmaking industry. Data were collected over extended periods to establish the statistical. Raw material inventory management of an integrated iron and steel industries a case study 144.
Abstractoptical microscopy, total oxygen measurements and slime tests have been conducted to quantify the size distribution and amount of. Basic oxygen process bop, a steelmaking method in which pure oxygen is blown into a bath of molten blastfurnace iron and scrap. Basic oxygen furnace based steelmaking processes and cleanliness control at baosteel l. Carbon monoxide and carbon dioxide are also formed due to decarburization taking place at the impact zone. Below you can see a diagram of the furnace with its main parts labeled. Modern furnaces will take a charge of up to 350 tonnes and convert it into steel in less than 40 minutes. The basic oxygen steelmaking process is the uks major method for making steel. The ratio between the height and diameter of the furnace is 1. Thirdly, cog or other higher value fuels could be used more effectively elsewhere.
Understanding dephosphorization in basic oxygen furnaces mdpi. Pdf optimization of residual manganese in molten metal in basic. 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. They sent this pamphlet to my model rairoad club when our then president bob judge wrote them for information because we were going to model the mill at our club. Considering the priceperformance optimization, our refractory experts gives customized engineering, design and supervisory services to our customers. Michael furnaces phone number, email, address spokeo. Primary deoxidation of basic oxygen furnace steel by. 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 the basic oxygen process basic oxygen furnace, basic oxygen steelmaking, basic oxygen converter is the most powerful and effective steel making method. The function of the boiler furnace is to convert into heat all the latent chemical energy of the fuel. Overlimit zinc loadings to blast furnaces might damage blast furnace refractory materials, and hence shorten blast furnace campaign life.
Carbon is oxidised to carbon monoxide and much of the carbon in the metal escapes as. Basic oxygen steelmaking bos makes steel from blast furnace iron and up to 20% of scrap metal. How steel is made using the basic oxygen steelmaking process. Nonferrous metal is also including nonferrous alloy. Geotechnical properties of fresh and aged basic oxygen furnace steel slag. The basic oxygen furnace yet to be installed under project stage phase ii is the classical and by far the most economical route to steel making from bf hot metal. Oct 20, 20 the basic oxygen furnace the basic oxygen steelmaking process is the uks major method for making steel. 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.
N scale steel mill basic oxygen furnace bof uss edgar thomson works, duration. Pdf optimization of residual manganese in molten metal. 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. Aug 09, 2014 argon oxygen decarburization furnace steel slag aod duration.
Thomas4 optical microscopy, total oxygen measurements and slime tests have been conducted to quantify. In the qbop process, the oxygen tuyeres are cooled by injecting hydrocarbon gas through an outer pipe surrounding the oxygen pipe. A thesis submitted to the school of graduate studies in partial fulfilent of the requirements for the degree. 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. External heat is applied to the fuel to cause its ignition initially. Primary steelmaking known as linzdonawitzverfahren steelmaking 28. Oxygen furnace bof to create liquid steel, solidifying the liquid steel via continuous casting, and finally sending the semifinished casts to various finishing refinements. The purpose of this paper is to investigate the application of oxygen enrichment in hot stoves. The basic oxygen furnace bof is the device used for the production of steel in the. Basic oxygen steelmaking also known as linzdonawitzsteelmaking or the oxygen converter process is a method of primary steelmaking in which carbonrich.
An energy efficiency analysis of an industrial reheating. 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. The chemistry of steelmaking the basic oxygen furnace structure. 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. Air is feed into the furnace which is oxygen and nitrogen, nitrogen is inert and combustion is complete the combusting air and products form ideal gases only concerned with the melt zone all energy is absorbed by the iron no external work is being done reduced energy equation. Air is feed into the furnace which is oxygen and nitrogen, nitrogen is inert and combustion is complete. Bottom blown furnace qbop in the bottomblown processes, oxygen is introduced through a number of tuyeres in the bottom of the furnace. Utilization of basic oxygen furnace bof slag in the. Basic oxygen steelmaking bos, bop, bof, or osm, also known as linzdonawitzsteelmaking or the oxygen converter process is a method of primary steelmaking in which carbonrich molten pig iron is made into steel. 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.
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. Jan 08, 2016 nonferrous metal refers to all the metal produced by basic oxygen furnace except iron, manganese and chromium. Pdf the steelmaking industry in the united states generates 916 million metric tons of steel slag every year. Secondly, the lower volume of flue gas reduces the loss of sensible heat via the flue gas. Basic oxygen furnace model railroader magazine model.
It points out an intermediate behavior between the iron ores and the coke but it has not been clearly quantified. Elrefaie3 abstract mass and energy balance equations are applied on top blowing bof and eaf steelmaking processes to detect the energy profile of production one ton steel by both processes. This is the the basic oxygen furnace in a picture taken from a bethlehem steel promotional pamphlet. Also, it can achieve further production cost reductions and productivity improvements in combination with highperformance ancillary equipment. Whatever your reasons, the use of ir analysis, and the furnace doctor. Detection of slopping in basic oxygen steelmaking using a camera. The study was conducted in the basic oxygen furnace shop of a reputed steel company. Find michael furnaces phone number, address, and email on spokeo, the leading online directory for contact information. Pdf geotechnical properties of fresh and aged basic oxygen. 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. 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. Basic oxygen furnace an overview sciencedirect topics.