Scrap submergence device and related processes

A molten metal recycling system comprising:

• a furnace comprising a main hearth, a sidewell, and a divider wall separating the main hearth from the sidewell, wherein the divider wall comprises (i) an entrance port where molten metal enters the sidewell and (ii) an exit port where molten metal exits the sidewell;
• and
• a scrap submergence device for mixing molten metal in the furnace, the scrap submergence device comprising:
• an upper structure;
• a shaft extending down from the upper structure;
• and
• an impeller at a lower end of the shaft,
• wherein the impeller is arranged within the sidewell such that:
• a radial flow path of the impeller is offset approximately 1″ to 5″ from a deflector block;
• and
• a forward edge of the radial flow path of the impeller is aligned with an edge of the entrance port.