... papermaking etc. Limestone Powder and lump, additive in the feed Application: 200mesh: as the additive in the feed 250-300mesh: whitewash the wall,plastic,rubber, ... reaction,reselection.dehydration,drying and depolymerization.It is adopted the technics of particular multi-selection and secondary depolymerization.2 ... .30.4325MESH940.4980.30.4 F-0172, Limestone Powder and Lump,additive in the feed