乾かん式しき製せい錬れん

noun

fire refining; pyrometallurgical refining

Technical term in metallurgy for refining metals using high-temperature processes, as opposed to wet (hydrometallurgical) methods.

• 乾かん式しき製せい錬れんは、銅どうや鉛なまりの精せい錬れんに広ひろく用もちいられている。

  Fire refining is widely used for smelting copper and lead.