Processing granulated metallic units within electric arc furnaces, and associated systems and methods

An electric arc furnace (EAF) system for producing steel from granulated metal units (GMUs), the EAF system comprising:

• a furnace shell positioned to receive a plurality of the GMUs, wherein individual GMUs comprise:
• a mass fraction of phosphorous of at least 0.025 wt. %;
• a mass fraction of silicon between 0.325 wt. % and 1.5 wt. %;
• a mass fraction of manganese of at least 0.2 wt. %;
• a mass fraction of carbon of at least 0.8 wt. %;
• a mass fraction of sulfur between 0.0001 wt. % and 0.08 wt. %;
• and
• a mass fraction of iron of at least 94.0 wt. %;
• electrodes configured to conduct electrical energy into the furnace shell to melt the GMUs to form a molten steel product;
• and
• a tapping system configured to remove the molten steel product from the furnace shell.