... and lump, additive in the feed Application: 200mesh: as the additive in the feed 250-300mesh: whitewash the wall,plastic,rubber,waterproof ... ,papermaking Properties:1.process:selects high purity limestone as raw material, is made through process of calcining ... ,reselection.dehydration,drying and depolymerization.It is adopted the technics of particular multi-selection and secondary depolymerization. ...