The specification discloses a ladle furnace apparatus for refining molten steel tapped from a steelmaking furnace therein There are introduced molten steel and a slag making material into the ladle The outer and inner lids of the ladle furnace are put on the respective receiving surfaces of the ladle to close the opening thereof In the interior of the ladle, the slag making material is .
Steel - Ladle metallurgy: The carrying out of metallurgical reactions in the ladle is a common practice in practically all steelmaking shops, because it is cost-efficient to operate the primary furnace as a high-speed melter and to adjust the final chemical composition and temperature of the steel after tapping Also, certain metallurgical reactions, for reasons of equipment design and .
Basic oxygen furnace based steelmaking processes and ,
Basic oxygen furnace based steelmaking processes and cleanliness control at Baosteel L Zhang*1, J Zhi2, F Mei2, L Zhu2, X Jiang2, J Shen2, J Cui2, K Cai3 and B G Thomas4 Optical microscopy, total oxygen measurements and slime tests have been conducted to quantify
The ladle bottom has a porous refractory plug, which is connected to the argon supply pipe at the Ladle Furnace stand The LF stand is also equipped with an addition hopper mounted on the cover and a lance for injection of desulfurizing agents Fumes formed during the operation are extracted through the cover Molten steel treated in Ladle .
up to the slag line The side wall thickness is usually 450 to 500mm for 10 to 50 ton furnaces and 550 to 650mm for 100 to 200 ton furnac Transformer power: Electric furnaces are powerful consumers of electric energy The operating voltage of a furnace is 100-800V and the curre nt may reach several thousand amper The furnace transformer
LADLE FURNACE (LF1) Product Description Ladle Furnace (LF1) Ladle furnace with Tagliaferri regulation, installed in 1985, nominal power 30 MVA with 400 mm electrode holder arms , supplied with storage system and ferro-alloys preparation and a fume purification plant
A process description is in Section 94 of this chapter In the bottom-blownconverters , Tapping 4–8 Steel is poured from furnace into a ladle, typical size = 250 tons , To understand the sequence of the oxygen steelmaking process, one must examine the design, lay-out and materials flow of the faciliti Figs 93, 94 and 95 show a 275 .
Optimization of Steel Production: Ladle Furnace Slag and ,
composition and properties of slag play an important role in protecting furnace refractori The research focused on the development of a slag model to have optimum slag saturated with MgO for better refractory life A computer model was developed to calculate minimum MgO required during the ladle refining process The effect of the
Most furnaces use liquid fuel, gaseous fuel or electricity as energy input Induction and arc furnaces use electricity to melt steel and cast iron Melting furnaces for nonferrous materials use fuel oil Oil-fired furnaces mostly use furnace oil, especially for reheating and heat treatment of materials
Download as PDF Set alert About this page , The process outline from converter to ladle furnace, vacuum treatment, and casting is presented in Figure 1619 Figure 1619 Process outline including steel heating by electrodes (LF) or chemically in ladl , A complete description of ladle desulfurization would require consideration of .
Steel Making • Rolling Process • Metallurgical Aspects , Gerdau Ameristeel utilizes the Electric Arc Furnace - Continuous Casting method in the , While the ladle is at LMF the chemistry of the heat of steel is verified to determine that proper alloy additions were made during the tapping of ,
LADLE REFINING AND SLAG CONDITIONING - Semantic Scholar
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 ,
Pourers and Casters, Metal :: Job Description - MyPlan
Careers / Pourers and Casters, Metal : Summary Description: , Read temperature gauges and observe color changes, adjusting furnace flames, torches, or electrical heating units as necessary to melt metal to specifications , Pull levers to lift ladle stoppers and to allow molten steel to flow into ingot molds to specified heights
Vacuum Degassing of Steel - Vacuum Furnace Engineering ,
Dec 05, 2017· Two methods of vacuum degassing: ladle degassing and stream degassing are discussed here Ladle Degassing During steel manufacturing, the molten steel is poured from the melting furnace into a vessel referred to as a teeming ladle (Fig 2)
Understanding Steel Making Operations in Basic Oxygen ,
Mar 02, 2015· Understanding Steel Making Operations in Basic Oxygen Furnace Steel making operation in the basic oxygen furnace (BOF) is also sometimes called basic oxygen steel making (BOS) This is the most powerful and effective steel making technology in the world Around 71 % of the crude steel is made by this process
Except for heating ladle furnace is an excellent place to make desulfurization with slag, Ca-treatment, and other alloying and trimming additions The process outline from converter to ladle furnace, vacuum treatment, and casting is presented in Figure 1619
Ladle car(s) for each treatment position LADLE FURNACES (LF) THE QUALITY LINK BETWEEN MELTING AND CASTING primetals Being the inventor and market leader of the ladle furnace technology, Primetals Technologies always finds the best Ladle furnaces are available as single or twin ladle furnace, depending on productivity demand and cycle time of
Apr 23, 2014· Ladle Metallurgy After tapping of steel from a primary steelmaking furnace such as BOF, EAF or EOF, molten steel for high quality or specialty applications is subjected to further refining in a number of alternative processes collectively known as ladle metallurgy Ladle metallurgy is sometimes also called ladle refining or secondary steelmaking
5 PLANT LAYOUT AND DESCRIPTION Secondary Steelmaking Simulation User Guide 5 Figure 5-1 Screenshot showing the plant layout used in the simulation , The recirculating degasser, CAS-OB and ladle arc furnace are all situated above their own tracks, such that the ladle can be positioned beneath them on a transporter car A crane is
ANALYSIS AND OPTIMIZATION OF LADLE TREATMENT TECHNOLOGY OF STEELS PROCESSING Konstantin Grigorovich1, , identification and their quantity determination in the probes sampled from the ladle furnace, ladle vacuum degasser and , allowing adequate description of high-temperature
furnace In order to conclude the process, a steel sample is taken and the ladle is released to begin the continuous ingot casting process 3 Neural network thermal model In order to start the process of deﬁning the thermal model variables, all factors that, according to the literature and ex-
Secondary Refining - AISI: American Iron and Steel Institute
Description and Operation of a Ladle Furnace By James C Simmons, Sr Vice President Meltshop Division, Techint Technologies Inc A Ladle Furnace is used to relieve the primary melter of most secondary refining operations, and its primary functions are: § Reheating of liquid steel through electric power conducted by graphite electrodes
INTER PLANT STANDARD – STEEL INDUSTRY IPSS CODE OF PRACTICE FOR SAFE HANDLING OF LIQUID METAL IPSS:1-11-009-15 (First Revision) Corresponding Indian Standard does not exist , 264 Ladle to Furnace (Twin Hearth) a) The furnace bottom is inspected when repair is done
Other articles where Ladle furnace is discussed: steel: Controlling temperature: ,can be achieved in a ladle furnace (LF) This is a small electric-arc furnace with an 8- to 25-megavolt-ampere transformer, three electrodes for arc heating, and the ladle acting as the furnace shell—as shown in A in the figure Argon or electromagnetic stirring is applied for better heat transfer
LADLE FURNACE (LF3) Product Description Ladle Furnace (LF3) Ladle furnace with Tagliaferri regulation, installed in 1990, Nominal power 20 MVA with 400 mm electrode holder arms , supplied with storage system and ferro-alloys preparation and a fume purification plant
Ladle Furnace Refractory Lining: A review - ijlera
Keywords: Heat loss, Ladle Furnace, Refractory Lining, Optimization, Steel manufacturing 1 INTRODUCTION Steel industries are important for the development of a nation In steel plant we use different types and capacity of ladle furnace for producing different kind of steel according to the application In ladle furnace a
additional heating facility and are called Ladle furnaces (LF) There are several practices adopted for degassing, like vacuum tank deg asser, stream degassing and recirculation degassing In recirculation degassing steel is made to flow from the ladle into a separate degassing chamber and the n returned after exposure to the vacuum