... Limestone Powder and lump, additive in the feed Application: 200mesh: as the additive in the feed ... 250-300mesh: whitewash the wall,plastic,rubber,waterproof material 350-400mesh:gusset plate,chemical,pipe 400-600mesh:toothpaste and ... calcining.chemical reaction,reselection.dehydration,drying and depolymerization.It is adopted the technics ... , Limestone Powder and Lump,additive in the feed