Danieli Corus and ArcelorMittal have signed a contract for the reline of the Blast Furnace No. 4 operated by ArcelorMittal at their integrated plant in Zenica, Bosnia Hercegovina. This contract follows a number of successful blast furnace and hot blast system repair projects completed by Danieli Corus within Europe, in countries such as the United Kingdom, Sweden and Germany.
After the reline, the furnace will have a 2024 m³ working volume. From the tuyere band upwards, the furnace will be rebuilt in-kind to its current design based on stave cooling. The hearth refractory and part of the hearth shell will be replaced based on a new design by Danieli Corus. Outside the furnace, portions of refractories in the hot blast main, bustle pipe and trough and runner systen will be replaced.
During the project, an Above Burden Probe with ancillary instrumentation and automation systems will be installed following the very satisfactory performance of such a system implemented by Danieli Corus in 2016 at a plant operated by ArcelorMittal elsewhere.
Finally, a thermocouple system for thermal monitoring of the furnace lining will be installed under this contract and Danieli Corus will provide operational assistance services during blow-down, salamander tapping and blow-in. The furnace reline is scheduled to take place during the first quarter of 2018.
The Blast furnace number 4 (“BF4”) is the only blast furnace still in operation in ArcelorMittal Zenica plant. The installation was put into operation in 1979 and usual working life of such plant is 10 to 11 years. By mid of 2018 this plant will complete 13 years of operation, since it was not working for almost 17 years, as consequence of the war in Bosnia and Herzegovina. Therefore, the Management of ArcelorMittal Zenica has decided to do the relining of the blast furnace in order to assure sustainable operation of the plant in next 15 years.
Biju Nair, ArcelorMittal Zenica CEO, stated:
„The management, the Union and employees of ArcelorMittal Zenica put consistent efforts in spite of tough challenges for the sustainability of steel production from integrated route which in turn assure over 3100 direct and over 10,000 indirect employment. This project is not only important to Zenica but also for Prijedor, which have the long history of being associated together in mining and steel making.
We have set a goal of long term sustainability with many more projects and I am very optimistic to bring the golden days of steel making back in Zenica and Bosnia and Herzegovina within next 5 years.“
source: Danieli Corus, ArcelorMittal