Natural gas and fuel oil were considered as additional fuel sources where coke oven gas was not available. This paper discusses the results of a Greenhouse Gas (GHG) footprint study completed by Hatch, comparing the GHG emissions of a conventional by-product coke plant with a heat-recovery coke plant within an integrated steel mill. furnace operated with a 70% sinter and 30% pellet charge if a sinter plant was present, or 100%Ībstract By-product and heat-recovery cokemaking technologies each offer the steelmaker different opportunities to develop the steelworks' energy balance with the aim to achieve a lower environmental footprint. The integrated steel plant included a coke plant, sinter plant (if present), blast furnace, BOF steelmaking, continuous casterĪnd hot strip mill.

In the opposite direction, the coke yield from a heat-recov. All of these improvements in coke quality effectively reduce the blast furnace coke rate and total carbonĬonsumption. The hot metal is then refi.Īverage coke size. Into a blast furnace where iron ore is transformed or smelted into liquid hot metal and slag. The resulting coke is charged together with iron ore (pellets and/or sinter).

Supplement the steel plant heat b.tional steel production, the first step of ironmaking is to carbonize metallurgical coal into blast furnace coke in aĬoke plant. Steel mill with a heat-recovery coke plant, a blast furnace that used 100% iron ore pellets and where natural gas was used to llowing were the major findings of the study: A

Tile miner furnace