No iron melts in a bloomery; the slag is liquid and the solid bits of iron sink to the bottom of it. Blast furnaces melt the iron, but weren't found in Europe

No iron melts in a bloomery; the slag is liquid and the solid bits of iron sink to the bottom of it. Blast furnaces melt the iron, but weren't found in Europe until much later than the eruption of Vesuvius (China was just getting them around this time).