Agglomeration in Metallurgy

This book gives details on the processes of agglomeration and its role in modern metal production processes. It starts with a chapter on sinter production, also discussing the quality of sinter and environmental aspects involved on the process. The following chapters focus on pellet production and briquetting of natural and anthropogenic raw materials. It also highlights the best available technologies for briquetting by stiff extrusion.

Auteur
Aitber Bizhanov. Was born on October 6 1956 in Buinaksk, Russia. Graduated from the Moscow Physical-Technical Institute in 1979. Aitber spent eleven years as a senior researcher with the Institute for High Temperatures, USSR Academy of Sciences, focusing on solar heat storage technologies. In 1992, he left academia, joining EVRAZ, a large, vertically integrated steel and vanadium enterprise with global assets. Following two years as Commercial Director and Executive Plant Director with ChTPZ-Complex Piping Systems, Aitber joined Kosaya Gora Iron Works in 2005 as Commercial Director, introducing a briquetting technology that used metallurgical wastes. Since then, he's worked on agglomeration and briquetting of the metallurgical wastes as Wastes Management Expert for HARSCO Metals. Today, Aitber is an Independent Representative of the J.C.Steele&Sons, Inc. Company in Russia&CIS, Eastern Europe and Turkey. Has Ph.D. degree in the agglomeration of natural and anthropogenic materials in metallurgy. Author of more than 60 publications and is owner and co-author of 14 Russian Patents in the field. Author and owner of the BREX trademark. With his personal participation, projects of briquetting of natural and anthropogenic raw materials of ferrous metallurgy were successfully implemented in a number of countries. Aitber is a member of Institute for Briquetting and Agglomeration (IBA) since 2011.
Valentina Chizhikova. Was born and lives in Moscow. Graduated with honors from the Moscow State Institute of Steel and Alloys (MISiS) with an engineer-metallurgist qualification. Her Ph.D. thesis marked the beginning of the study of solid-phase sintering processes in relation to pellet firing, her doctoral (Dr.Sci.) thesis was devoted to a wide range of tasks related to sinter and pellet production, namely, improving the quality of agglomerated raw materials, resource saving and environmental safety. She has more than 30 years of teaching experience at MISiS (now the National University of Science and Technology), as a professor. In scientific terms, the activities of V.M. Chizhikova have always been devoted to solving industry-specific tasks. Under her leadership and direct participation, more than 30 major research projects were successfully implemented. She is the author of about 200 publications, including 80 copyright certificates and patents, the author and co-author of 8 books on the theory of metallurgical processes, techniques and technologies for the production of agglomerated raw materials and pig iron smelting, environmental problems of metallurgy. In practical terms, she served for 13 years (until April 2018) at a large metallurgical enterprise (PJSC Novolipetsk Metallurgical Plant) as a chief ecologist.

Contenu

Introduction ..

References ..

1Sinter Production ...

1.1General Information about the Sintering Process ..

References ..

1.2Raw Materials of the Sintering Process .

References ..

1.3 Preparation of Charge Components for Sintering ..

1.3.1 Dosing of the Components of the Sinter Charge .

1.3.2 Pelletizing of the Sinter Charge References ..

1.4 Mass Exchange Processes in the Sintering Layer ..

1.4.1 Chemical Reactions with Participation of Solid Phases ..

1.4.2 Processes in the Formation of the Liquid Phase during Melting .

1.4.3 Processes during Solidification (crystallization) of the Melt ..

References ..

1.5 Heat Transfer in the Sintering Layer .............................................................

1.5.1 General Information on the Sintering Heat Exchange .

1.5.2 Zonal Heat Balances of Sintered Layer

1.5.3 Mathematical Model of Heat Exchange during Sintering

1.5.4 Three-Dimensional Mathematical Model of the Sintering Process .

1.5.5 Calculation of the Specific Yield of the Sintering Gas

1.5.6 Vertical Sintering Speed .

References ..

1.6 The Gas Dynamics of the Sintering Process

1.6.1 The Basic Equation of Dynamics of the Porous Layer .

1.6.2 Gas-dynamic Resistance Coefficients ..

1.6.3 Porosity of the Sintering Layer .

1.6.4 Gas Dynamics of Sintering Technology 1.6.5 Sintering Machine Performance

1.6.6 Ways to Improve the Performance of Sintering Machines

1.6.6.1 Modernization to Increase Sintering Capacities .

1.6.6.2 Increasing Sinter Yield

1.6.6.3 Intensification of the Sintering Process ..

References ..

1.7 Quality of the Sinter in Terms of Influence on the Performance of Blast Furnace Smelting ..

1.7.1 Sinter Quality Indicators

1.7.2 Influence of Sinter Quality on Gas-dynamic Parameters of Blast Furnace Smelting

1.7.3 Requirements for Sinter Quality .

1.7.4 Basic Solutions to Improve Quality of Sinter

1.7.4.1 Production of Low-silicon Sinter

1.7.4.2 Control of the Porous Structure of the Sinter .

1.7.4.3 Introduction of Low-melting Additives . 1.7.4.4 Return Mode

1.7.4.5 Regulation of the Thermal Level of the Sintering Process .

1.7.5 Technology of Sintering under Pressure

References

1.8 Energy Efficiency of the Sintering Technology

References

1.9 Environmental Aspects of Sinter Production (Best Available Technologies) ..

1.9.1 Thermodynamic Modeling of Emissions in the Sintering Process .

1.9.2 Characteristics of Emissions from Sinter Production .

1.9.3 Influence of Technological Factors on the Emission of Pollutants during Sintering.

1.9.4 Environmental Requirements as the Main Priority of Production Modernization .

1.9.5 Waste Gas Recirculation Concept ..

1.9.6 Recommendations on the Best Available Technologies (BAT) in Sintering . 1.9.7 Sinter Plant without Ch...