溶よう銑せん炉ろ

• 溶よう銑せん炉ろ

  Standard kanji spelling using 溶 (melt).

• 熔よう銑せん炉ろ

  Variant using 熔 (melt), less common than 溶銑炉.

Compound of 溶 (melt) + 銑 (pig iron) + 炉 (furnace). The variant 熔銑炉 uses the older character 熔 for melting.