Assertion: modern kiln | /r/ObjectUse | used in metallurgy
Facets:
value: to fire clay and porcelain objects
type: PURPOSE
value: for burning lime
type: PURPOSE
value: for roasting iron ores
type: PURPOSE
Source sentences:
text: Modern kilns are used in ceramics to fire clay and porcelain objects, in metallurgy for roasting iron ores, for burning lime and dolomite, and in making portland cement.