Date: September 22, 2008 The first day of the the 3rd International Meeting on Ironmaking of ABM (38th edition of the Ironmaking Seminar)
Venue:
PESTANA SÃO LUÍS RESORT HOTEL
Av. Avicênia, nº 1 - Praia do Calhau
65.071-370 São Luís City, Maranhão State - Brazil
Phone +55 98 2106 0505 - Fax: +55 98 2106 0500
OFFICIAL TRAVEL AGENCY
Matriz de Eventos e Turismo
contact: Natalie Graue - natalie@matrizdeeventos.com.br
Tel: 55 11 30516121
www.matrizdeturismo.com.br/agenda_nova.php
COURSE
LOW COST HOT METAL: BLAST FURNACE OPERATION AND DESIGN
08:00 - 3:30pm - Josué Montello room
Coordinator: Dr. José Henrique Noldin Jr., Manager of Technology Application, Tecno-Logos
Presented by:
Maarten Geerdes Ph.D, Senior consultant ironmaking, Danieli-Corus, Netherlands
Fernando Tadeu Pereira de Medeiros, Associate Professor UFF
Ing. Reinoud van Laar, Manager Technology, Danieli-Corus, Netherlands
OBJECTIVE
The main objective of this course is to provide an overall view of the basics of the blast furnace process design and operation, including high coal injection, burden quality and distribution, casthouse operation and expert systems.
TARGET PUBLIC
Engineering, process and operating personnel interested and/or active in the steelmaking industry, especially those involved with ironmaking operations.
COURSEBOOK
The book, "Redução de Minério de Ferro em Alto Forno" by Maarten Geerdes, Cor van der Vliet, Hisko Toxopeus and Fernando Tadeu (Belo Horizonte, 2008) shall be given to all participants (included in the registration fee).
PROGRAMME
8:00 – 9:00am - Basics of the Blast Furnace Process and Hot Metal Costs Maarten Geerdes – DANIELI-CORUS
The basics of the process will be described using the structure of the furnace content, as found in quenched furnaces and then following what happens with gas produced at the tuyeres in its route through the process as well as what happens with burden in its route from the top to the taphole.
With respect to costs it will be shown that the operational expenditures of hot metal production are primarily determined by coke rate per ton hot metal and by productivity of the blast furnace. Long campaigns and no upsets are as well important.
9:00 – 10:00am – Ferrous Burden Quality
Fernando Tadeu Pereira de Medeiros - UFF
The ferrous burden quality will be defined. The consequences of differences in quality, especially reduction-disintegration of sinter and lump ore and softening- melting properties of ore burden will be discussed. And finally the requirements for the ore burden for high performance operation will be described.
10:00 – 10:30am – Coffee-Break
10:30 – 11:30am – High Coal Injection and Burden Distribution
Maarten Geerdes – DANIELI-CORUS
How to reach high coal injection levels. How to use burden distribution. The lecture will include effects of oxygen in the wind and how optimum productivity is reached at high coal injection rates. Coal properties will be discussed as well.
11:30 – 12:30pm – BF Operation at High Coke Rate and High Productivity
Maarten Geerdes – DANIELI-CORUS
Focus on operational issues at the tuyere floor (e.g. circumferential symmetry of injection) and in the casthouse: the importance of dry hearth practice. How to handle the furnace in special situations like stops and starts. To this end the background in slag chemistry will be presented.
12:30 – 1:30pm – Lunch
1:30 – 2:30pm – Low-cost Equipment: Sizing, Profiling and Design
Reinoud Van Laar – DANIELI-CORUS
Trends in blast furnace design will be given. Examples will be taken from the hot blast stove system, the blast furnace proper and the casthouse runner system.
2:30 – 3:30pm – Experts and Experts Systems
Maarten Geerdes – DANIELI-CORUS
Expert systems allow operators to take more timely and more precisely corrective actions. However, an expert system without an expert is like an airplane without a pilot: you prefer not to be aboard. Experts understanding the process will be required in the future, not only to update and to customize the expert systems but as well to take corrective actions as soon as the blast furnace process is out of control, e.g. in order to prevent chilled hearth incidents.
Resumes
Maarten Geerdes (1951).
PhD in Chemistry, MA in Economics
Worked at Hoogovens/Corus, 1983-2002 in various functions, ia as technology manager of the blast furnace department. Worked as a consultant for numerous blast furnaces in process improvement, high PCI operation, chilled hearth recovery. Author of “Modern Blast Furnace Ironmaking” (2004, Verlag Stahl-Eisen)
Reinoud van Laar (1971),
MSc in Applied Physics
Joined Hoogovens Technical Services (presently Danieli-Corus) in 1996. worked as a engineer-technologist, manager Refractory and presently manager technology at Danieli-Corus. Is involved in numerous projects with respect to relines, rebuilds and greenfield blast furnaces.
Fernando Tadeu Pereira de Medeiros (1951),
PhD in Chemistry, Master of Metallurgy (Sheffield, 1980), Doctor Engineer (2004)
Worked 32 years at CSN, Brasil as researcher, process development manager and senior engineer. Presently Associate Professor at Universidade Federal Fluminense. Research interests iron ore reduction, applied statistics and hybrid modeling.
