Steel Academy s 5 th International Seminar incl Plant Tour. Ironmaking March 2019, Duisburg / Germany

Transcription

1 G. Pressebild Pinna Siemens / HKM Steel Academy s 5 th International Seminar incl Plant Tour Ironmaking March 2019, Duisburg / Germany

2 Seminar s Chairmen Prof. Dr.-Ing. Peter Schmöle thyssenkrupp Steel Europe Univ.-Prof. Dr.-Ing. Dr. h.c. Dieter Senk RWTH Aachen University

3 Speakers Dr.-Ing. Alexander Babich, Department of Ferrous Metallurgy, RWTH Aachen University Dr. Maarten Geerdes, Geerdes Advies, Castricum Dipl.-Ing. Peter Liszio, KBS Schwelgern, Duisburg Dr.-Ing. Hans Bodo Lüngen, Steel Institute VDEh, Düsseldorf Dr. Robert Nightingale, University of Wollongong Dr.-Ing. Volker Ritz, Research Centre of Iron Ore Beneficiation, Liebenburg Univ.-Prof. Dr. Johannes Schenk, Montanuniversität Leoben Prof. Dr.-Ing. Peter Schmöle, thyssenkrupp Steel Europe AG, Duisburg Univ.-Prof. Dr.-Ing. Dieter Senk, Department of Ferrous Metallurgy, RWTH Aachen University Viktor Stiskala, thyssenkrupp Steel Europe AG, Duisburg Andreas Theuer, thyssenkrupp Steel Europe AG, Duisburg Organization: Peter Schmieding, Steel Academy, Düsseldorf

4 Seminar Ironmaking Content of summary on the next slides you see a selection of our programme

5 Blast Furnace Layout What a melting pot! Source: H.B. Lüngen, Steel Institute VDEh

6 Types of Iron Ore Different types different Fe-contents Hematite, Fe 2 O 3 Limonite, FeO nh 2 O Magnetite, Fe 3 O 4 Iron Ores Taconite, Fe 3 O 4 Siderite, FeCO 3 Itabirite, Fe 2 O 3 (banded)

7 Agglomeration of Fines Sintering and pelletizing Sinter Pellets: diameter 1.5 cm Source: Primetals

8 Coal and Coke High performance blast furnaces need excellent coke! Source: DMT

9 Chemical and Physical Processes Chemical reactions, heat and mass balance, flow phenomena Indirect reduction Direct reduction With the knowledge of chemical reactions, heat and mass balance and flow phenomena you are able to understand the largest black box in the world! P. Schmöle Gas flow Baur-Glaessner-Diagram Source: P.Schmöle, thyssenkrupp Steel

10 Application of Reducing Agents Coke, coal, oil, gases and plastics Coke Source: A. Babic RWTH Aachen University

11 Blast Furnace Performance Coke in the blast furnace: different challenges different coke qualities Small coke Mixed in ore burden High reactivity: Consumption in the upper BF Layer coke Sufficient I 40, CSR, size and size distribution Low reactivity: Permeability and drainage Centre or hearth coke High I 40, CSR and voidage Low reactivity: Permeability and drainage Source: P.Schmöle, thyssenkrupp Steel

12 Operational Challenges Burden, circumferential symmetry, tuyeres, stops, starts Tuyere blockage and explosion! Preventative measures: Delta-P over tuyere stocks or light sensor coupled to individual lances Source: M. Geerdes

13 Hearth and Deadman Dynamics What is the deadman? Floating or sitting? Source: B. Nightingale, University of Wollongong

14 Modelling and Simulation Options and limits / Programmes in use Coupled 3-D DEM-CFD model for the whole BF S. Natsui et. al., German Japanese Workshop Challenges in Ironmaking, Aachen, 2010

15 Quality and Use of BF Slags Slag formation, slag control, slag applications Chemical and mineralogical compositions of magma, cements an BF slags Source: D. Senk, RWTH Aachen / Slag Atlas

16 Direct and Smelting Reduction Alternatives for the future? Pellets, Lump Ore Fuel Gas Flue Gas Scrubber Scrap Gas heater Reduction Shaft Reducing Gas Charging Bin Hydrogen Air HDRI Recycle Gas HDRI (Hot Direct Reduced Iron) Electric Arc Furnace Steel Recycle Gas Compressor Source: Hans Bodo Lüngen, Johannes Schenk, Process Concept of DR-Shaft and Electric Arc Furnace in ULCOS

17 Iron and Steel Plant Tour at HKM Hüttenwerke Krupp Mannesmann G. Pinna / HKM

18 Venue of Seminar Intercity Hotel Duisburg, Mercatorstr. 57, Duisburg, Germany