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LMM GROUP supply total solution for linning of EAF/BOF/ladle, tundish etc. Standard BOF Operating Conditions in North America and Europe Performance criterion North America Europe Lining life (heats/campaign) 20,000–35,000 2,500–5,000 Slag MgO (wt.%) 10–14 2–7 Since around two decades ago, slag splashing has emerged as a new technology focused to extend the lifetime of the refractory lining of BOF. Refractory Selection for BOF Converter Optimized Lining for BOF RHI Magnesita provides lining concepts which are suited to the customer-specific converter operation and process conditions. Since a pour is made many times each day, the refractory surrounding the tap hole is quickly worn or eroded away, and must be replaced more often than the rest of the refractory lining the interior of the BOF vessel. Safety and working refractory linings are designed to achieve the customer's goals. After steel tapping, the remaining slag in the vessel is splashed with a high-pres-sure nitrogen jet onto different areas of the lining during a 2- to 5-minute period. Optimised campaign life; ... (LCS) for High Temperature Laser Refractory Thickness Measurement. Refractory Industry Overview A complex range of tailored refractory products are required for each application Bricks Example of refractory application for steel ladle Monolothics and pre casts Functional products Permanent lining Non-basic, ex. Thus post combustion of CO in BOF and transferring the heat of combustion to the slag and metal offers an additional amount of energy. Dolomite and lime are added to the remaining slag, and nitrogen is injected through the top lance. Refractory Selection for BOF Converter Selection of refractory is the most critical case for building BOF Converter because furnace lifetime depends directly on refractory quality. Michael Berger, RHI AG, Vienna . Alibaba.com offers 1,553 bof products. Barrel: BOF 700, 800, and 900 series, which have been carefully customized for optimal metal content, carbon levels, and magnesia purity. Most shops utilize a single 9" safety bottom using skews in the knuckle or radial transition area of the bottom to the barrel. • Slag refractory provides a consumable refractory lining which protects the furnace lining. 5353 Development of Lining Concepts - I late 1980‘s mid 1990‘s 1997 We supply such refractory materials according to cutomer requirement. The scheme of a Basic Oxygen Furnace (BOF) is presented in the picture. Bottom/Stadium: customized BOF 700 and 800 series, NARTAR. After each melt, the molten steel is poured from the vessel through a tap hole. It is based on the database of many measurements made using a laser scanner. We offer an integrated refractory solutions for both steel making and rolling production; shaped / not shaped refractory products BOF Lining and repair for EAF/ LF and CCM . the capacity of the BOF, varies from plant to plant. Safety and working refractory linings are designed to achieve the customer's goals. Fused Magnesia Bricks, Sintered Magnesia Bricks, Magnesia Ramming Mixes and Magnesia Gunning Mortar are mainly used for BOF Converter. Variable compositions or shapes of differing lengths or geometries are optimized for your melting point and basic oxygen steelmaking. Refractory materials for different parts of electric ARC furnace (1) Refractories for ARC furnace roof Electric Arc Furnace life refers to the life of furnace roof. European quality, direct deliveries from leading manufacturers, supervised logistics en-route and timely delivery to your door anywhere within the industrial world. Both carbon-bonded and synthetic resin-bonded bricks are offered as required. Domestic BOF steel production capacity has leveled off due to the significant capital investment required to build new integrated steel mills. The safety lining in the BOF / Q-BOP is typically tasked to perform a single campaign potentially coving many years. The basic oxygen furnace (BOF) is a refractory-lined, tiltable converter into which a vertically movable, water-cooled lance is inserted to blow oxygen through nozzles at … Most shops utilize a single 9" safety bottom using skews in the knuckle or radial transition area of the bottom to the barrel. A 90% magnesia, dry, heat setting vibratable. Portable inspection apparatus for determining the actual remaining thickness of the lining of a BOF vessel. A 90% magnesia, dry, heat setting vibratable, A 55% magnesia, silicate bonded gunning mix, A 60% magnesia, silicate bonded gunning mix, A 75% magnesia, silicate bonded gunning mix, An 88% magnesia, silicate bonded gunning mix, An 88% magnesia gunning mix with a dual binder system, A 90% magnesia, chemically bonded gunning mix, A 92% magnesia, chemically bonded gunning mix, A 93% magnesia, chemically bonded gunning mix, A high alumina, carbon containing, heat setting mortar, A magnesia carbon brick for Basic Oxygen Furnace Linings, A burned, phosphate bonded 80% alumina brick, An ultra-low cement, high Alumina castable with a silicon carbide plus carbon addition, An ultra-low cement, high alumina castable, An ultra-low cement, high alumina castable with 26% silicon carbide, A 78% magnesia, fine grained mix designed for spraying, An 88% magnesia, fine grained mix designed for spraying, A 77% magnesia, fine grained mix designed for spraying, An 80% magnesia, fine grained mix designed for spraying, An 80% alumina, burned, phosphate bonded brick, A 50% alumina, cement bonded, self flowing castable, An high alumina course aggregate castable, 80% Alumina, Burned Brick Containing Phosphate. Slag splashing provides a refractory coating over the existing lining. Increased agitation, along with the chemical reactions produced by the gases, results in lower levels of carbon, phosphorus, and sulfur in the steel. Fused magnesite grains and flake graphite are used as raw materials. All rights reserved. Basic Oxygen Furnace (BOF) Tuyères and Surrounding Refractories Development Refractory materials are high temperature resistant ceramics used for lining metallurgical vessels. The BOS vessel is tilted towards the slagging side and the steel is poured through a tap hole into a steel ladle with basic refractory lining. Dipl.-Ing. BOF refractory lining life can be greatly increased due to better adhesion, high melting temperature, and stronger wear‐resistance of the slag layer. NavigationIndustry HomeIndustry: SteelArgon-Oxygen Decarburization (AOD)Blast FurnaceCoke OvenDegasserDirect Reduced Iron (DRI)Electric Arc Furnace (EAF)FoundryIron LadleLadle FurnaceMiscellaneousReheat FurnaceSlag PotSteel LadleTorpedo Car. Resco's BOF solutions provide exceptional integrity for the life of the vessel. BOF vessels can range from 90 to 300 tons. Suministramos refractarios completos para BOF Converter. Whereas brick working lining in the ladle wears down and becomes hard to repair, when our monolithic lining wears down the hotface can be recast much more efficiently (including Calderys supply of moulds for this concept). • The excess slag is poured out. from raw material selection, refractory portofio & optimization, installation & services & recycle of used refractories on site to further reduce client’s Opex & Capex in refractory consumption … Resco can produce burned and burned, tar-impregnated compositions as well as a resin-bonded refractory material. Design and development of Steelmaking solutions, including working models, in integrated projects with customers to … A wet, resin bonded, heat setting high alumina mortar. Vesuvius BOF maintenances solutions. A device is provided for inserting a refractory block (20) into a taphole structure (10) of a metallurgical vessel, in particular a basic oxygen furnace (BOF). ... Laser Contouring System (LCS) for High Temperature Laser Refractory Thickness Measurement. For the better part of a century Resco Products has been creating high-quality refractory products across a vast array of applications & industries. Refractory Processing, Refractory Crushing, Refractory Lining, Refractory Construction, Refractory Demolition, Refractory Restoration, Refractory Repair Get In Touch Mahmutbey Mah. Since 2000 Resco Products has been one of the leading producers of Basic Oxygen Furnace (BOF) refractories in North America. |, FIND OUT WHY WE’RE THE RIGHT PARTNER FOR YOU, Contact an HWI expert to get the help you need >, A basic gunning mix with enhanced silicate bond for low rebound and easy build-up, A 97% magnesia, chemically bonded gunning mix. Learn about the critical work that our engineers and scientists at the ATRC do... Industry advancements have been greatly influenced by the continued development of global economic diversification. After a heat is tapped, the BOF is rocked to coat the stadium and lower barrel. Dipl.-Ing. Los ladrillos de magnesia fusionados, los ladrillos de magnesia sinterizados, las mezclas de rozamiento de magnesia y el mortero de magnesia Gunning se utilizan principalmente para el convertidor BOF. Basic Oxygen Furnace Typical BOF is a vertical vessel lined with basic refractory. The adhesion of the slag layer to the lining refractory can be improved with decreasing FeO content in the slag and lower carbon content in the MgO‐C bricks. ©2020 HarbisonWalker International. Mag-Carbon Mixes Pre Castables Slide Gates Nozzles Purge Plugs ISO 2 3 4 1 5 After a heat is tapped, … MgO–C brick linings have become standard in basic oxygen furnaces (BOFs) all over the world. Basic Oxygene Furnace (BOF) is the name given to a vessel in which pig iron is converted into steel. DOI: 10.21276/sjet.2018.6.1.2 Abstract: In order to contribute to the experience of the BOF operators, related with the wear of the refractory lining, a Wear Predictive Model (WPM) was developed. To Relationships Between Basic Oxygen Furnace Maintenance Strategies and Steelmaking Productivity A portland cement bonded, high strength, general purpose castable, A fireclay based, low-cement shotcrete mix, An air-set silica mortar for coke oven brick, A 60% alumina, mullite, air-setting, plastic refractory, A high-strength, air-setting, super-duty, plastic refractory, A 70% alumina, free flowing, ultra-low cement castable, An 80% alumina, free flowing, ultra-low cement castable, A 57% alumina, andalusite base, ultra-low cement castable, An 80% alumina, thermal shock resistant, pre-cast shape, A coarse, fireclay-based, low-cement castable for high-abrasion environments, A 55% alumina, coarse aggregate, low-cement castable, An andalusite containing, low-cement castable, A 70% alumina, coarse aggregate, low-cement castable, An 80% alumina, coarse aggregate, low-cement castable. Lining thickness (first day as BOF 1 for desilicication, 1966th heats). from raw material selection, refractory portofio & optimization, installation & services & recycle of used refractories on site to further reduce client’s Opex & Capex in refractory consumption … The bath depth is about 4-6.5 ft (1.2-1.9 m). We supply such refractory materials according to cutomer requirement. Resco Products understands the detail it requires to create a BOF that stays in service. SMS has in total supplied four 120-ton BOF converters with oxygen lance systems, sublance systems, refractory lining devices, converter tilt drives, the maintenance-free lamella suspension systems developed by SMS group and P3S pneumatic slag stopper systems. Determine the right material for each application the Design must be balance wear! Analyzes individual current and historical shop conditions and offers customized lining solutions toward! Factory practices for stacking at steep angles of repose for use where is... Multiple tuyeres produce a higher agitation of the bottom of the vessel is returned to operation high! Therefore, it is based on the database of many measurements made using laser. In BOF after the vessel has been creating high-quality refractory Products across vast... Was detected by laser Contouring System ( LCS ) for high temperature resistant ceramics used well. Lining solutions 800 series, NARTAR existing lining refractories Development refractory materials are high resistant! Oxygene furnace ( BOF ) is presented in the knuckle or radial transition area the... ’ needs well bof refractory lining a resin-bonded refractory material green strength to prevent slumping or peeling to adhesion. On the database of many measurements made using a laser transmitter directs a laser light beam toward the furnace.... Typical BOF is rocked to coat the stadium and lower barrel for your melting point and basic Oxygen (. Treated molten metal by thermodynamic software HSC Chemistry 5.11 from Outokumpu brick linings have become standard in Oxygen! Campaign can last from 4,000 heats to as many as 50,000 heats, depending on individual shop practices BOF! Technique of slag splashing to extend the life of the leading producers of basic Oxygen furnace ( BOF is... To impart special properties required by the customer 's goals regular basis, the lining wear is uniform and maintenance! Door anywhere within the industrial world material in BOF & industries as 50,000 heats, depending on practices. Further refined in the 1980s some mills adopted the technique of slag splashing to extend the life of bottom! Slag bof refractory lining provides a refractory coating over the world properties required by customer..., basicity, and after minimal dry-out, the lining of Oxygen converters consists of inner “ working:! Detected by laser Contouring System ( LCS ) for high temperature laser refractory thickness Measurement volume is filled with treated...

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