Assertion: modern furnace | /r/HasAspect | eccentric bottom tap-hole
Facets:
value: to reduce inclusion of nitrogen
type: PURPOSE
value: to reduce slag
type: PURPOSE
value: often
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.