of lime stone mill
Lime kiln . A lime kiln is a kiln used for the calcination of limestone calcium carbonate to produce the form of lime called quicklime calcium oxide The chemical equation for this reaction is CaCO 3 heat → CaO CO 2 This reaction can take place at anywhere above 840 C 1544 F but is generally considered to occur at 900 C 1655 F at which temperature the partial pressure of CO 2 is 1