Assertion: steelmaking furnace | /r/HasAspect | tapping spout
Facets:
value: originally
type: TEMPORAL
Source sentences:
text: Originally, all steelmaking furnaces had a tapping spout closed with refractory that washed out when the furnace was tilted, but often modern furnaces have an eccentric bottom tap-hole (EBT) to reduce inclusion of nitrogen and slag in the liquid steel.