converter (refining); rotary kiln
Technical term in metallurgy and industrial processing. Refers to a vessel used for converting raw materials, especially in steelmaking (e.g., basic oxygen furnace) or cement production.
At the steelworks, a converter is used to turn pig iron into steel.
セメント工場の転炉は高温で原料を焼成する。
The rotary kiln at the cement plant fires the raw materials at high temperatures.