Limestones灰岩limestonen.石灰石limestone ore used for cement水泥用灰岩limestone pebble conglomerate石灰质卵石砾岩limestone/gypsumwet method石灰石／石膏湿法Limestone mountainous regions石灰岩山地limestone-slag/ash water石灰石-灰（渣）水limestone of maokou formation茅口组灰岩limestone injection FGD system炉内喷钙烟气脱硫Limestone around the county.石灰石遍布全县。limestone-gypsum FGD process石灰石-石膏法limestone - gypsum FGD plant石灰石-石膏法脱硫装置