Assertion: calcium carbonate | /r/ObjectUse | used in the purification of iron
Facets:
value: in a blast furnace
type: LOCATION
value: from iron ore
type: TRANSITIVE-OBJECT
Source sentences:
text: Calcium carbonate is also used in the purification of iron from iron ore in a blast furnace.
text: It is also used for purification of iron from iron ore in a furnace.
text: It can also be used for thepurification of iron in blast furnaces.
text: Calcium carbonate is also used in the purification of iron from iron ore in a blast furnace.
text: Calcium carbonate is also used in the purification of iron from iron ore in a blast furnace.