Assertion: black silicon carbide | /r/AtLocation | electric resistance furnace
Facets:
value: from petroleum coke
type: OTHER
value: from quartz sand
type: LOCATION
value: from anthracite
type: LOCATION
value: at high temperature
type: TEMPORAL
Source sentences:
text: Black Silicon Carbide is produced in an electric resistance furnace from quartz sand and petroleum coke or anthracite at high temperature.