ENGLISH

Electric Arc Furnace Steelmaking

By Miroslaw Karbowniczek

Book information

Publisher
CRC Press
Year
2021
ISBN
0367673479, 9780367673475
Language
english
Format
PDF
Filesize
18 MB (19392034 bytes)
Pages
262\263
Topic
Technique Heat
Time added
2021-07-30 08:57:42

Description

The importance of electric arc furnace steelmaking is evident from the escalated world production seen in steel industry. This book presents systematic and complete details on the current state of knowledge about metallurgical processes carried out in the electric arc furnace. It includes principles of construction of electric arc furnaces, applied construction solutions, and their operations (together with auxiliary/supportive devices). Modern technologies of melting of various grades steel are detailed, considering the participation of secondary metallurgy including theoretical backgrounds of chemical processes and reactions. It contains theoretical analysis and results of laboratory, model, and industrial tests. Features: Covers the practical aspects of electric arc furnace steelmaking including technological process. Discusses the operation issues of an electric arc furnace in a technical and technological context. Presents a systematic and complete knowledge about relevant construction solutions and metallurgical processes. Includes practical industrial benchmark indicators in the scope of equipment and technology. Analyses practical case studies from industry. This book aims at researchers, professionals and graduate students in Metallurgical Engineering, Materials Science, Electric Power Supply, Environmental Engineering, and Mechanical Engineering. Cover Half Title Title Page Copyright Page Table of Contents Preface Author Chapter 1 Introduction 1.1 Characteristics of Steel Electrometallurgy 1.2 Historical Development of Electric Furnace Design 1.3 Development of the Design of Modern Electric Arc Furnaces 1.4 Development of Electric Arc Furnace Practice References Chapter 2 Layout of an Electric Furnace Shop Reference Chapter 3 Construction of Electric Arc Furnaces 3.1 Shape and Dimensions of the Reaction Chamber 3.2 Furnace Shell 3.3 Furnace Refractory Lining 3.3.1 Bottom Refractory Lining 3.3.2 Wall Refractory Lining 3.4 Water-Cooled Wall Design 3.4.1 Water-Cooling Side Panel Systems 3.4.2 Layered Cooling System 3.4.3 Cast Iron and Steel Water-Cooled Blocks with Cast-In Steel Pipes 3.4.4 Tubular Cooling System 3.4.5 Principles of Cooling System Engineering 3.5 Design and Structure of the Roof 3.6 Mechanical Equipment 3.6.1 Electrode Holding Equipment 3.6.2 Furnace Control Cabin References Chapter 4 Electric Equipment of EAFs 4.1 Power Supply System 4.2 Disconnect Switch and Furnace Operating Switch 4.3 Furnace Transformer 4.3.1 The Principles of Alternating Current Transformation 4.3.2 Design of Furnace Transformers 4.4 Secondary Circuit 4.5 Instrument Transformers 4.6 Induction Stirrer 4.7 Optimal Operating Conditions of the EAF Power Supply System 4.7.1 Characteristics of the Electric Arc 4.7.2 Power Controllers for the EAF Power Supply System 4.7.2.1 Thyristor Power Controllers 4.7.2.2 Hydraulic Power Controllers 4.7.3 Optimization of the Power Input 4.8 Impact of Electric Arc Furnace Operation on the Electrical Energy Quality References Chapter 5 Auxiliary Equipment 5.1 Oxy-Fuel Burners 5.2 Manipulator 5.3 Post-Combustion Lances References Chapter 6 Graphite Electrodes 6.1 Production of Electrodes and Their Properties 6.2 Electrode Consumption 6.2.1 Wear of the Electrode Tip 6.2.2 Wear of Side Surface of the Electrode 6.2.3 Other Reasons for Electrode Consumption 6.3 Influence of the Operating Parameters and Steelmaking Conditions on Electrode Consumption References Chapter 7 Environmental Protection Systems 7.1 Protection Against Gases and Dusts 7.2 Gas Capture System 7.3 Modeling of the System of Off-Gas Capture from the Electric Arc Furnace 7.4 Comprehensive Furnace Housing System 7.5 Use of Waste Gas Thermal Energy to Heat Up Scrap References Chapter 8 Charge Materials 8.1 Steel Scrap 8.2 Direct Reduced Iron (DRI) 8.3 Crude Iron 8.4 Ferroalloys and Technical Metals 8.5 Slag-Forming Materials 8.6 Oxidizing and Carburizing Materials References Chapter 9 Steel Production Technique in Arc Furnaces 9.1 Fettling 9.2 Charge Composition Principles 9.3 Charge Loading 9.4 Meltdown Period 9.4.1 Energy-Related Aspects 9.4.2 Oxidation of Metal Bath Components 9.5 Oxidation Period 9.5.1 Carbon Oxidation 9.5.2 Sulfur Removal 9.5.3 Gas Removal 9.6 Refining Period 9.7 Tapping 9.8 Role of Slag 9.8.1 Functions and Properties of Slag during the Steelmaking Process in an Electric Arc Furnace 9.8.2 Slag Foaming Practice References Chapter 10 Mass and Heat Balances 10.1 Mass Balance 10.2 Example of a Mass Balance of an Electric Arc Furnace Steelmaking Process 10.3 Heat Balance 10.4 Example of a Heat Balance of an Electric Arc Furnace Steelmaking Process References Index

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