TY - THES

T1 - Influence of bottom purging on the metallurgical results and the BOF process

AU - Kollmann, Thomas

N1 - embargoed until 11-05-2015

PY - 2010

Y1 - 2010

N2 - Higher sophisticated products and unsteady charge materials require an economically optimized BOF-Process operation. Installing a CIP-System (Converter-Inertgas-Purging) enhances the performance of the top blowing BOF-Process (original LD-Process) from the metallurgical and procedural point of view. The CIP-System consists of twelve independent and separate controllable MHP24 plugs (Multi-Hole-Plugs) in ecliptic bottom arrangement. This thesis evaluates the advantages of inertgas bottom purging in direct comparison to a top blowing vessel (232 t tapping weight). Process adjustments (e.g. slag, fluxes, blowing and purging pattern) are discussed. Maintenance philosophies and their influence on the availability of the bottom purging are considered as well as down-times and total gas amounts on the metallurgical results.

AB - Higher sophisticated products and unsteady charge materials require an economically optimized BOF-Process operation. Installing a CIP-System (Converter-Inertgas-Purging) enhances the performance of the top blowing BOF-Process (original LD-Process) from the metallurgical and procedural point of view. The CIP-System consists of twelve independent and separate controllable MHP24 plugs (Multi-Hole-Plugs) in ecliptic bottom arrangement. This thesis evaluates the advantages of inertgas bottom purging in direct comparison to a top blowing vessel (232 t tapping weight). Process adjustments (e.g. slag, fluxes, blowing and purging pattern) are discussed. Maintenance philosophies and their influence on the availability of the bottom purging are considered as well as down-times and total gas amounts on the metallurgical results.

KW - LD-Prozess Bodenspülen Schlackenführung Konverterpflege

KW - BOF process bottom purging slag practice BOF maintenance

M3 - Master's Thesis

ER -