Page 10 - New Trends In Coal Conversion

Contents ix

13 Coke in the iron and steel industry 367
Alexander Babich and Dieter Senk
13.1 Introduction 368
13.2 Coke in the blast furnace 372
13.3 Quality of metallurgical coke 377
13.4 Further coke types for the blast furnace 385
13.5 Coke for further metallurgical processes 390
13.6 Charcoal ironmaking, coke ironmaking, what next? 394
13.7 Foundry coke in the cupola furnace 398
13.8 Concluding remarks 400
References 400

14 Coal-based reducing agents in ferroalloys and silicon production 405
Merete Tangstad, Johan Paul Beukes, Joalet Steenkamp and
Eli Ringdalen
14.1 Introduction 405
14.2 Overview of manganese ferroalloy production processes 406
14.3 Overview of ferrochrome production processes 409
14.4 Overview of silicon and silicon ferroalloys production processes 413
14.5 CO 2 reactivity and thermal strength 415
14.6 SiO reactivity 420
14.7 Slag reactivity 425
14.8 Electrical resistivity 429
14.9 Current and future trends 435
References 435

15 Coal tar: a by-product in cokemaking and an essential raw
material in carbochemistry 439
María Antonia Diez and Roberto Garcia
15.1 Introduction 439
15.2 Coal tar and PAC classes 440
15.3 Conventional characterization of tar and pitch 451
15.4 An insight into the mechanism of tar formation 467
15.5 Concluding remarks 479
Acknowledgments 479
References 480

Index 489