In the Solvay process mined calcium carbonate is heated in {HEAD ~ a kiln} at 12000 C. for conversion into {TAIL ~ lime stone CaO} and CO2 
In the Solvay process mined calcium carbonate is heated in { HEAD ~ a kiln } at 12000 C. for conversion into { TAIL ~ lime stone CaO } and CO2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH