ArcelorMittal Kryvyi Rih has completed overhaul of blast furnace No. 7

ArcelorMittal Kryvyi Rih completed an extended overhaul of the third category of blast furnace No. 7 of blast furnace shop No. 1. The overhaul made it possible to restore the technological parameters of the furnace and enter its design production - 3,500 tons of pig iron per day. The company's expenses for the renewal of the metallurgical unit amounted to more than UAH 140 million.

The overhaul lasted 25 days and ended with a record-breaking fast blowing-in of the furnace, the total volume of which is 2000 cubic meters. Among the main works is the restoration of the blast furnace cooling system: 124 refrigeration plates were replaced from 400, which is 30% of the entire cooling system. Shotcreting of the blast furnace shaft was carried out - all refrigerator plates are now reliably "hidden" under refractory concrete. The loading device and the skip winch have been replaced, namely, the restoration of its fourth speed. This immediately increased the furnace productivity by 500 tons of pig iron per day. Almost half of the foundry yard of the kiln was dismantled and actually rebuilt, while the other part was significantly strengthened, which contributes to industrial safety.

The production capacity of blast furnace No. 7 is 1200000 tons of pig iron per year. In total, ArcelorMittal Kryvyi Rih currently has three blast furnaces in operation - No. 6, 7, 9. Another blast furnace, No. 8, has been shut down for overhaul. The capacity of the plant, which has a full production cycle, is designed to produce more than 6 million tons of steel, more than 5 million tons of rolled products and more than 5,500,000 tons of pig iron annually.

Source https://ukraine.arcelormittal