also: せいれんじょ
noun
refinery; smelting works
A facility where metals are refined or smelted. Used in industrial contexts.
この地域には大きな精錬所がある。
There is a large refinery in this area.
精錬所では銅やアルミニウムを精錬している。
The smelting works refines copper and aluminum.
製錬所 is a variant spelling with the same meaning, but 精錬所 is more common.
Compound of 精錬 (refining, smelting) and 所 (place, facility).