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  • Secondary Refining - American Iron and Steel Institute

    2010-10-25 · Secondary Refining For purposes of this article, Secondary Refining or Secondary Metallurgy is defined as any post steelmaking process performed at a separate station prior to casting and hot metal desulfurizaion. It does not include normal alloying prac tice in the furnace

  • Ladle Refining Furnaces (LRF) - Inductotherm Corp.

    Ladle refining of liquid metal is a proven technology to produce high quality steel. A Ladle Refining Furnace is used to raise the temperature and adjust the chemical composition of molten metal.

  • `INDUREF’ - Induction Ladle Refining Furnace for

    2010-1-5 · capacity ladle refining furnace. For small heats, three-electrode AC-arc LRFs are not successful because of high refractory erosion in the area adjacent to electrodes. Three arcs are deflected away from the electrodes and overheats sidewalls resulting in

  • LADLE REFINING AND SLAG CONDITIONING - Semantic

    2015-12-31 · Furnace. In defining the optimal slags, consideration is given to the effects of scrap quality, carbon injection, slag basicity and MgO content. Ladle refining is probably the most important part of steelmaking since it is here where the hot iron units from the furnace are changed into a salable high quality steel product.

  • OVERVIEW OF THE STEELMAKING PROCESS - worldsteel

    2018-2-1 · OVERVIEW OF THE STEELMAKING PROCESS Pellets Sinter Limestone Coke Iron Ore Coal Scrap Blast furnace (Ironmaking) Converter (Steelmaking) Ladle (Refining) Blast Furnace Steelmaking Coal/Natural Gas Plate Hot-rolled bars Rods Tube rounds Rails Slab Billet Bloom Hot-rolled and cold-rolled strip (Coils) Structural shapes.

  • Analysis of Refining Processes in Steel Ladle Treatment

    2013-12-2 · Analysis of Refining Processes in Steel Ladle Treatment I. D. Buga1, A. I. Trotsan2, B. F. Belov2, ... Efficiency of refining processes at out-of-furnace treatment of iron-carbon melts depends on a structurally-chemical condition of ladle slag. These slags are formed from the liquid ... deoxidation of furnace and ladle slag, deoxidation and ...

  • (PDF) Kinetic Model of Steel Refining in a Ladle Furnace

    2006-3-16 · A ladle furnace operates with a highly reducing slag provided the slag carry over is properly controlled; however, this seldom occurs. In addition, argon injection is also employed to increase ...

  • Ladle furnace

    2002-9-30 · Ladle furnaces are used for a manifold of metallurgical applications. As an example, for specialty steels the ladle furnace is used to desulfurize the melt after vacuum degassing. A prominent example is the plasma ladle furnace for desulfurizing nickel-based alloys.

  • Basic oxygen steelmaking - Wikipedia

    2019-1-5 · Molten pig iron (sometimes referred to as "hot metal") from a blast furnace is poured into a large refractory-lined container called a ladle. The metal in the ladle is sent directly for basic oxygen steelmaking or to a pretreatment stage.

  • LECTURE 15 Electric Furnace S teelmaking - NPTEL

    2017-8-4 · LECTURE 15 Electric Furnace S teelmaking Contents : Introduction ... Electric furnace b) Transport facilities for ladle c) Scrap charging d) Auxiliary injection facilities ... or mill scale may also be added if refining is required during melt - down period.

  • Ladle Furnace - an overview | ScienceDirect Topics

    2011-1-7 · Download as PDF. Secondary Steelmaking. Lauri Holappa, in Treatise on Process Metallurgy: ... One such application that was carried out for the ladle furnace at V&M do, Brazil, ... CO is an important step because it supplies a less expensive form of energy to the bath and performs several important refining reactions. In modern EAF operations ...

  • CN201901685U - Ladle refining furnace with double-ladle

    2010-9-6 · The utility model discloses a ladle refining furnace with a double-ladle cart and single station, comprising a power supply part, a supporting platform, ladles, a ...

  • ladle furnace metallurgy training pdf - ugcnetnic

    Ladle Furnace Metallurgy Training Pdf - futeurproject.eu. ... View of a Single Electrode DC Ladle Refining Furnace. The double electrode DC-arc LRF was developed to overcome the problem of connecting the bottom. Ladle furnace roofs - industry.siemens.cn.

  • ... of Steel Steelmaking and Refining:(,形成钢炼钢、精炼和治疗).PDF

    2017-2-4 · Shaping and Treating of Steel Steelmaking and Refining:(,形成钢炼钢、精炼和治疗).PDF ... 10 Electric Furnace Steelmaking Chapter 11 Ladle Refining and Vacuum ...

  • Analysis of Refining Processes in Steel Ladle Treatment

    2013-12-2 · Analysis of Refining Processes in Steel Ladle Treatment I. D. Buga1, A. I. Trotsan2, B. F. Belov2, ... Efficiency of refining processes at out-of-furnace treatment of iron-carbon melts depends on a structurally-chemical condition of ladle slag. These slags are formed from the liquid ... deoxidation of furnace and ladle slag, deoxidation and ...

  • cnesystems.co

    2016-11-7 · LADLE REFINING FURNACE SOLUTION FOR QUALITY STEEL MAKING WWW.CNESYSTEMS.CO.IN . QUALITY STEEL MAKING Over the last few years, increasing customer demands for improved product quality have forced steel producers to implement new and innovative metallurgical treatment into their modern

  • ladle refining process – Electrolytic Aluminum Smelter ...

    Ladle Refining Furnace Ladle Refining Furnace is used to refining the molten steel from the primary melting furnace (electric arc furnace, induction furnace, converter and etc.), meanwhile have the function of adjusting molten steel temperature, and be a buffer of the whole process.

  • Kinetic Model of Steel Refining in a Ladle Furnace

    Kinetic Model of Steel Refining in a Ladle Furnace ... The objective of this work is to present a mathematical model for the refining process in the ladle furnace, based in the computation of ...

  • Basic oxygen steelmaking - Wikipedia

    2019-1-5 · Molten pig iron (sometimes referred to as "hot metal") from a blast furnace is poured into a large refractory-lined container called a ladle. The metal in the ladle is sent directly for basic oxygen steelmaking or to a pretreatment stage.

  • LECTURE 15 Electric Furnace S teelmaking - NPTEL

    2017-8-4 · LECTURE 15 Electric Furnace S teelmaking Contents : Introduction ... Electric furnace b) Transport facilities for ladle c) Scrap charging d) Auxiliary injection facilities ... or mill scale may also be added if refining is required during melt - down period.

  • Electric Furnace Steelmaking - metallon

    2014-7-7 · Steel refining was left for the recently introduced ladle furnace. Large transformers were introduced; ultra-high-power furnaces developed, which were made possible by adopting foaming slag ... Electric Furnace Steelmaking 275. by large and mega-shredders [7]. Regarding air cleanliness, there are dry, dump, and wet shredders.

  • A Study on Molten Steel/Slag/Refractory Reactions during ...

    2006-3-19 · Steel/Slag/Refractory Reactions during Ladle Steel Refining Sune Jansson Licentiate Thesis ... reaction of the melt with the furnace lining, the ladle lining and the pouring system. The refractory material may be eroded by the molten steel and slag as well as corroded

  • Ladle (metallurgy) - Wikipedia

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    2018-12-21 · Ladle (metallurgy) Jump to navigation Jump to search. This ... In metallurgy, a ladle is a vessel used to transport and pour out molten metals. ... Typically a transfer ladle will be used to transfer molten metal from a primary melting furnace to either an holding furnace or an auto-pour unit.

  • US5397379A - Process and additive for the ladle

    The present invention relates to the ladle refining of steel with a surface slag covering. More specifically, the present invention relates to the utilization of solid, preferably briquetted, recycled ladle metallurgy furnace (LMF) slag as a flux in slag-making additions including

  • RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC

    treatment in ladle furnace. This process produces slag with only small variations in composition and properties. The aim of the work presented in this contribution was to study the possibilities of EAF slag recycling into the refining – remelting process in EAF and to recognize all possible positives and negatives of the recycling.

  • The Making of Iron & Steel - SEAISI

    2016-5-5 · THE MAKING OF IRON AND STEEL . 2 1 Overview ... Furnace. Pig iron and refined iron ore pellets (briquetted iron) can also be used, and because his t ... The refining of iron to make steel is where the carbon content of hot metal is lowered, usually to

  • Plasma Ladle Furnace

    2002-9-30 · The Plasma Ladle Furnace primaril differs from a conventional ladle furnace by its watercooled torches which are used instead of conventional graphite electrodes. It is said to offer many advantages in metallurgical refining processes where cleanness, quality assurance and flexibility are important. Because an absolutely clean argon

  • Understanding Electric Arc Furnace Operations

    2018-6-13 · the furnace lining from the high- intensity arc during meltdown. Subsequently, the arc is lengthened by increasing the voltage to maxi- mum power. Most modern furnaces are equipped with water-cooled panels in the upper half of the sidewall, rather than refractories, which allow for longer arcs and higher energy input to the furnace.

  • Medium Frequency Induction Melting Furnace

    2016-1-7 · Medium Frequency Induction Melting Furnace The Range of Products and Services: ... the furnace which in-turn increases the lining life and hence ... Metal Refining Konverters (AOD), Ladle Refining Furnaces, Continuous Casting Machine, Power Distribution and Furnace Transformers and other equipment for Steel

  • LF炉温度控制曲线_百度文库

    2012-5-4 · LF 炉温度控制曲线 LF Furnace temperature control curve 钢包精炼炉工艺流程及作业周期( 二.LF 钢包精炼炉工艺流程及作业周期(min) ) Second. LF Ladle refining ...

  • Characteristics of Inclusions in Low Carbon Al-Killed ...

    years, ladle furnace (LF) refining is also chosen to produce LCAK steels, especially for thin slab casting processes.8,9) To prevent the breakout during thin slab continuous casting process, the sulfur content in steel need to be relatively low. Thus desulfurization is needed during secondary refining process.

  • Effect of EMS on Inclusion Removal in Ladle Furnace for ...

    2018-5-10 · carbon steel process where a vacuum degassing process is often used after ladle furnace refining. Subsequently, steel cleanliness in the ladle refining process for stainless steel is more important than that for the quality of carbon steel.

  • A Kinetic Model to Predict the Compositions of Metal,

    A kinetic model to simulate the reactions in a ladle furnace was developed in the previous paper. The ... increase, the ladle refining process has become increasingly important in recent times to obtain molten steel with the suitable composition and cleanness. Precise control of the

  • ... of Steel Steelmaking and Refining:(,形成钢炼钢、精炼和治疗).PDF

    2017-2-4 · Shaping and Treating of Steel Steelmaking and Refining:(,形成钢炼钢、精炼和治疗).PDF ... 10 Electric Furnace Steelmaking Chapter 11 Ladle Refining and Vacuum ...

  • METAL CASTING (FOUNDRY) BASICS & APPLICATIONS

    2016-7-27 · x 1 No. 25T Ladle Refining Furnace (LRF) Immersion pyrometer to ensure accurate temperature control. FACILITIES : PRODUCTION. Date of last change Reference/Name of Presentation/SN 21 FACILITIES : PRODUCTION POURING OF 12E10 GRINDING RING PRIDE of BCSL Foundry - pouring of 7.6T Valve Casting.

  • Basic oxygen furnace based steelmaking processes and ...

    2006-3-22 · Ladle slag reduction lowers FeOzMnO in the slag to below 5%, decreasing steel reoxidation by the slag. Calcium treatment by CaSi wire injection during ladle furnace (LF) refining is used to modify inclusions and improve submerged entry nozzle (SEN) clogging. Slag detection is employed at the ladle bottom during continuous casting. Flow

  • INTRODUCTION ELECTRIC ARC & LADLE REFINING

    2017-6-13 · ladle refining furnace (under commissioning) 30 mt / 6 mva bsrm iron & steel mills, chittagong, bangladesh ladle refining furnace 30 mt / 6 mva cew, lucknow electric arc furnace 5 mt / 2.4 mva frontier alloys & steels ltd, paonta sahib electric arc furnace 3mt / 1.5 mva 5. list of installations

  • Melting and Refining Technology of High-Temperature

    2012-3-5 · For many years the basic electric arc furnace was the only large scale primary pro- duction unit for melting high temperature steels and first generation superalloys. ... arate refining facilities revived the electric arc furnace and made it technically and ... Gas treatments can be continued during tapping and holding the melt in the ladle by ...

  • REFINING STEELS PRODUCED IN ELECTRIC ARC FURNACE

    2013-5-22 · than refining the furnace (see fig. 5). ... Refining steels produced in Electric Arc Furnace 115 Maximum yields 73 73 91 92 0 32 78 76 0 30 73 59 10 40 59 59 0 10 20 30 40 50 60 70 80 ... EAF tapping in ladle . 116 Valentin Mincu, Nicolae Constantin 4. Conclusions 1. ...

  • JFE Steel Corporation West Japan Works in Kurashiki Area

    2017-8-30 · Manufacturing processes and equipment Bar and Wire Rod Mill Billet Mill No. 1 Steelmaking Plant Lime Plant Iron Ore Yard Coke Oven Coal Yard ... Blast furnace Steel converter Ladle refining equipment Vacuum degassing equipment Continuous casting equipment Ingot casting machine Coke is ...

  • SOFT COMPUTING TECHNIQUES FOR LADLE REFINING

    2016-8-3 · types: primary or basic oxygen furnace (BOF) steel-making and secondary steel-making or ladle refining process. Primary steel-making is concerned with converting molten pig iron to steel from a blast furnace and steel morsel into steel through the basic oxygen furnace (BOF) and electric arc furnace

  • Mass transfer and slag-metal reaction in ladle refining a ...

    2010-1-14 · Mass transfer and slag-metal reaction in ladle refining – a CFD approach Eva Ramström Licentiate Thesis School of Industrial Engineering and Management Division of Micro Modelling ... control the ladle treatment and reach desired properties of the final steel product.

  • Liquid steel of the highest purity - SMS Concast

    2014-4-14 · with one another: from the electric arc furnace, to the ladle furnace, to the vacuum station – all elements are in tune with each other. The ladle furnace is designed to perform steel refining quickly and reliably. It is a perfect match for the 110-ton electric arc furnace: together, both units process the steel within just 30 to 35 minutes.

  • ladle furnace - Deutsch-Übersetzung – Linguee

    Deoxidation, alloying, and refining with [...] inductive stirring and vacuum degassing with argon bubbling and inductive stirring is [...] carried out in an ASEA-SKF ladle furnace. ovako. ... (Ultra High Chemical Power) electric arc furnace, ladle furnace, and five-strand caster for billets, blooms, and blanks with SMS Meer beam mill.

  • Optimization of Steel Production: Ladle Furnace Slag and ...

    2013-6-12 · Optimization of Steel Production: Ladle Furnace Slag and Caster Productivity By Kailash Bathy Vodeyar Math Department of Mechanical Engineering McGill University Montreal, Canada ... calculate minimum MgO required during the ladle refining process. The effect of the desulfurization process on optical basicity and MgO requirement is discussed ...

  • Basic oxygen furnace based steelmaking processes and ...

    2006-3-22 · Ladle slag reduction lowers FeOzMnO in the slag to below 5%, decreasing steel reoxidation by the slag. Calcium treatment by CaSi wire injection during ladle furnace (LF) refining is used to modify inclusions and improve submerged entry nozzle (SEN) clogging. Slag detection is employed at the ladle bottom during continuous casting. Flow

  • RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC

    treatment in ladle furnace. This process produces slag with only small variations in composition and properties. The aim of the work presented in this contribution was to study the possibilities of EAF slag recycling into the refining – remelting process in EAF and to recognize all possible positives and negatives of the recycling.

  • Thermodynamic studies of FeO-containing slags and their ...

    2009-8-26 · electric arc furnace. Tapping into a ladle furnace is FREDRIKSSON, P. and SEETHARAMAN, S. Thermodynamic studies of FeO-containing slags and their impact on ladle refining process. VII International Conference on Molten Slags Fluxes and Salts, The South African Institute of Mining and Metallurgy, 2004.

  • Role of slag in the steel refining process in the ladle

    2013-9-19 · the refining slag during tapping from the furnace into the ladle or it is the product of silicon oxidation in steel. Silica causes the refining properties of slag to worsen as it reduces the assimilation of oxide phases in slag. It is believed that the silica content in slag intended for refining steel processes should not exceed 10%.

  • LF炉温度控制曲线_百度文库

    2012-5-4 · LF 炉温度控制曲线 LF Furnace temperature control curve 钢包精炼炉工艺流程及作业周期( 二.LF 钢包精炼炉工艺流程及作业周期(min) ) Second. LF Ladle refining ...

 

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