Interesting video, and i think PT should definitely refrain from building swimming pools like that ;) By the way, you should check the volume levels, the voices were somewhat quiet. @Tom, i will come by for lunch in the new year! Greetings, G.K.
good day, thank you for sharing the technology information. Regarding the raw materials (iron bearing) imputs: (1) what would be the requirements for the DRI in tearms of chemical composition, physical and mettalurgical properties? (2) Did the process accepeted some non reduced raw materials in the burdem mix (pellets, lump, biquetes)? thank you
Thanks for your questions. (1) A standard DRI for the smelter is based on BF-grade ores, with total iron between 60 and 65% Fe and a metallization degree of 85-93%. Further, the process is very flexible with regard to gangue content, metallization, trace elements, etc., and can operate with different particle sizes (DRI-fines, DRI-pellets, HBI). (2) The process allows the application of a certain amount of unreduced materials. However, this is a compromise, as reduction in the Smelter occurs via the endothermal direct reduction reaction. This means that the carbon carrier and electrical energy consumption rise by increasing the quantity of unreduced input. That results in higher CO2 emissions. It is worth mentioning that the Smelter can also handle iron-bearing by-products from the steel plant such as dusts or mill-scale. Let us know if you have more questions! 😊
Typically, around 50 kg of carbon carrier and approximately 700kWh of electrical energy are consumed per ton of hot metal. However, that highly depends on the actual input material mixture.
Thank you very much for the detailed answer. So it seems that it consumes a bit more electricity than a generic EAF (if I am not wrong it is 500 kwh per ton). Considering less carbon use, more energy consumption is worthed only if the source of electricity is renewable.@@PrimetalsTechnologies
