Modern Blast Furnace Ironmaking: An Introduction

Front Cover
Title Page -- Preface -- Contents -- List of Symbols and Abbreviations -- Introduction of the Blast Furnace Process -- What is driving the furnace? -- The equipment -- Book overview -- The Blast Furnace: Contents and Gas Flow -- The generation of gas and gas flow through the burden -- Furnace efficiency -- An example of gas flow and contents of a blast furnace -- The Ore Burden: Sinter, Pellets, Lump Ore -- Introduction -- Iron ore -- Quality demands for the blast furnace burden -- Sinter -- Pellets -- Lump ore -- Interaction of burden components -- Coke -- Introduction: function of coke in the blast furnace -- Coal blends for coke making -- Coke quality concept -- Coke size distribution -- Mechanical strength of coke -- Overview of international quality parameters -- Injection of Coal, Oil and Gas -- Coal injection: equipment -- Coal specification for PCI -- Coal injection in the tuyeres -- Process control with pulverised coal injection -- Circumferential symmetry of injection -- Gas and oil injectants -- Burden Calculation and Mass Balances -- Introduction -- Burden calculation: starting points -- An example of a burden calculation -- Process calculations: a simplified mass balance -- The Process: Burden Descent and Gas Flow Control -- Burden descent: where is voidage created? -- Burden descent: system of vertical forces -- Gas flow in the blast furnace -- Fluidisation and channelling -- Burden distribution -- Coke layer -- Ore layer thickness -- Erratic burden descent and gas flow -- Blast furnace instrumentation -- Blast furnace daily operational control -- Blast Furnace Productivity and Efficiency -- The raceway -- Carbon and iron oxides -- Temperature profile -- What happens with the gas in the burden? -- Oxygen and productivity -- Use of metallic iron -- How iron ore melts -- Circumferential symmetry and direct reduction.
 

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Contents

Introduction of the Blast Furnace Process
1
Contents and Gas Flow
11
Sinter Pellets Lump Ore
19
Coke
37
Injection of Coal Oil and Gas
47
Burden Calculation and Mass Balances
59
Burden Descent and Gas Flow Control
67
Blast Furnace Productivity and Efficiency
93
Casthouse Operation
125
Special Situations
141
Glossary
151
Annex I Further Reading
153
Annex II References
154
Annex III Rules of Thumb
156
Annex IV Coke Quality Tests
157
Index
161

Hot Metal and Slag
115

Common terms and phrases

Bibliographic information