... plastic,rubber,chemical,papermaking etc. Limestone Powder and lump, additive in the feed Application: 200mesh: as the additive in the feed 250-300mesh: ... high purity limestone as raw material, is made through process of calcining.chemical reaction,reselection.dehydration,drying and depolymerization.It ... .4400MESH940.3980.30.4325MESH940.4980.30.4 F-0172, Limestone Powder and Lump,additive in the feed