8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

Throughout the past 3 years TeraWatt Group have participated in over than 30 blast furnace reconstruction projects. Over a dozen projects were focused on solving one of the most challenging issuess of the modern blast furnace process – significant standard cooling system (with untreated water) useful lifetime decrease, caused by rapid failure of cooling plates under pulverized coal injection conditions. Today cooling system efficiency impacts blast furnace lifetime. Therefore, modern cooling systems require higher reliability and uptime operational parameters. M Technology cooling system design provides the following features which are significantly more important under pulverized coal injection conditions: − effective heat removal from cooling plates and lining; − formation and maintenance of a stable skull layer on the lining surface; − energy efficiency, cooling system heat loss reduction, coke saving; − environmental impact reduction by using closed-loop (water recycling) cooling systems or lower load on the enterprise's recirculation; − BF lifetime extension up to 15 years. We have implemented a lot of innovative approaches, modern math and 3D modeling software while working on our projects and technology. We are proud that our customer, the largest steel making holding in Ukraine and one of leaders worldwide – METINVEST HOLDING has approved patented by M Technology blast furnace cooling system solution as standard for all new blast furnace constructions, revampings. The article describes the innovations and devolvement of modern cooling systems on the example of the following implemented and well-proven facilities (including cooling staves, pump station, automation system design, math modeling principles): − Zaporizhstal PJSC BF-2, BF-3, BF-4, BF-5. − Azovstal Iron & Steel Works PJSC BF-3, BF-4, and BF-6. − Ilyich Iron & Steel Works PJSC BF-4.