At public hearings, ArcelorMittal Kriviy Rih has presented an Environmental Impact Assessment Report for the project of the Wire Rod Mill-1 Reconstruction, which includes replacement of two laying heads and two pinch-rolls. Design solutions were accepted in line with the basic engineering from the technology and main equipment supplier – Danieli company.
This mill produces wire rod, round steel and reinforcing bars in coils with diameters ranging from 5.5 mm to 14 mm. The products go through the finishing block of stands and then, through the water cooling area, into the laying head which converts it in the form of flat coils to the moving transfer table. The pinch-roll on the pass line is designed to control wire rod tension and for high-speed automatic transfer of the wire rod into the laying head.
The reconstruction will reduce operational costs owing to increased wear resistance and life span of the equipment. Particularly, it will lower the vibration level by applying an oil film bearing in laying heads, and stabilize the coil forming when rolling at 85 m/s. Besides, it will improve work safety.
After installation of new laying heads with pinch-rolls, the mill will continue producing with the speed of up to 85 m/s. The mill’s output will remain the same at this stage. To enhance its productivity, it is planned to install ten-stand blocks and mandrels, and to switch to Simatic 7 up-to-date controllers; this will be the next reconstruction stage focusing on increase of rolled product feeding speed from 85 up to 120 m/s. This will allow achieving design parameters.
The current stage of Wire Rod Mil-1 reconstruction does not involve an increase in the emissions and creation of new ones. The project does not imply a significant effect on the environment, both during its implementation and in the further operation of the facilities. The authors of the prepared reports and representatives of the different departments of ArcelorMittal Kriviy Rih answered the question from the citizens and public representatives. The hearings were held by Aleksei Biushkin, the representative of Ministry of Ecology and Natural Resources of Ukraine. (AMKR/Ukrainian metal)