Tour 1: voestalpine LINZ
Ironmaking in Linz is performed with five coke oven batteries, one sinter strand and three blast furnaces.
For cokemaking, 200 ovens with a chamber volume of 21,5 m3 are in operation. This only one coke oven plant in Austria generates approx. 1,3 million metric tons of blast furnace coke from 1,8 million metric tons of coking coal each year. All batteries have been modernized and equipped with systems for a high level of environmental protection and automatization as well as state-of-the art coal unloading and preparation equipment.
The sinter strand with suction area of 222 m2 and a bed height of 700 mm produces approx. 2,8 million metric tons of sinter per year. The plant is equipped with selective partial offgas recirculation system, a dry offgas cleaning system (MEROS) and a selective catalytic reduction (SCR) DeNOx system and is the benchmark for high productivity sintering operation with maximum emission reduction.
Hot metal is produced in three blast furnaces, each equipped with PCI and injection equipment for several other alternative reducing agents like plastics, oil, crude tar, NG and COG.
Approx. 4,8 million metric tons of hot metal per year are produced with BF A (hearth diameter 12,0 m) and BF 5/6 (hearth diameter 8,0 m). The latest developments in charging technology, process automatization and measuring techniques lead to an outstanding blast furnace performance.