The Iron Blast Furnace

Theory and Practice

J. G. Peacey, W. G. Davenport, D. W. Hopkins

• Publisher: Pergamon
• Year: 2016
• Print ISBN: 9780080232584
• eBook ISBN: 9781483140872
• Topic: Technology & Engineering
• Subtopic: Materials Science
• Index: Technology & Engineering

The Iron Blast Furnace: Theory and Practice presents theoretical, experimental, and operational evidence about the iron blast furnace as well as a mathematical description of its operation. This book includes a set of equations that accurately describe stoichiometric and enthalpy balances for the process and which are consistent with observed temperatures and compositions in the furnace stack. These equations, which have been devised on the basis of the Rist approach, show the effects of altering any blast-furnace variable on the other operating requirements of the process. This monograph is comprised of 14 chapters and begins with a brief description of the blast-furnace process. The next chapter takes a look inside the furnace, paying particular attention to its behavior in front of the tuyères and the kinetics of the coke gasification reaction. The reader is then introduced to the thermodynamics and stoichiometry of the blast-furnace process; enthalpy balance for the bottom segment of the furnace; the effects of tuyères injectants on blast-furnace operations; and blast-furnace optimization by linear programming. A number of important variables covered by the equations are discussed, including hydrocarbon injection at the tuyères, oxygen enrichment of the blast, moisture, limestone decomposition, coke reactivity, and metalloid reduction. The effects of many of these variables are illustrated numerically in the text while others are demonstrated in sets of problems that follow each chapter. This text will be a valuable resource for metallurgists and materials scientists.

Table of contents

• Front Cover
• The Iron Blast Furnace: Theory and Practice
• Copyright Page
• Table of Contents
• Preface
• Acknowledgements
• CHAPTER 1. A Brief Description of the Blast-Furnace Process
• CHAPTER 2. A Look Inside the Furnace
• CHAPTER 3. Thermodynamics of the Blast-Furnace Process: Enthalpies and Equilibria
• CHAPTER 4. Blast-Furnace Stoichiometry
• CHAPTER 5. Development of a Model Framework: Simplified Blast-Furnace Enthalpy Balance
• CHAPTER 6. The Model Framework: Combinations of Stoichiometric and Enthalpy Equations
• CHAPTER 7. Completion of the Stoichiometric Part of the Model: Conceptual Division of the Blast Furnace through the Chemical Reserve Zone
• CHAPTER 8. Enthalpy Balance for the Bottom Segment of the Furnace
• CHAPTER 9. Combining Bottom Segment Stoichiometry and Enthalpy Equations: a priori Calculation of Operating Parameters
• CHAPTER 10. Testing of the Mathematical Model and a Discussion of its Premises
• CHAPTER 11. The Effects of Tuyère Injectants on Blast-Furnace Operations
• CHAPTER 12. Addition of Details into the Operating Equations: Heat Losses; Reduction of Si and Mn; Dissolution of Carbon; Formation of Slag; Decomposition of Carbonates
• CHAPTER 13. Summary of Blast-Furnace-Operating Equations: Comparison between Predictions and Practice
• CHAPTER 14. Blast-Furnace Optimization by Linear Programming
• APPENDIX I: Tuyère Flame Temperature Calculations
• APPENDIX II: Representing Complex Tuyère Injectants in the Operating Equations
• APPENDIX III: Slag Heat Demands
• APPENDIX IV: Stoichiometric Data for Minerals and Compounds in Ironmaking
• APPENDIX V: Enthalpies of Formation at Temperature T from Elements at Temperature T (HTf)
• APPENDIX VI: Enthalpy Increment Equations for Elements and Compounds, [ HT° – H298°]
• APPENDIX VII: Numerical Values of E Blast Enthalpy
• Answers to numerical Problems
• List of Symbols
• Index