... 2.Size(mesh): 325 1250 etc 3.whiteness:93min 4.Used for plastic,rubber,chemical,papermaking etc. Limestone Powder and ... of calcining.chemical reaction,reselection.dehydration,drying and depolymerization.It is adopted the technics of ... particular multi-selection and secondary depolymerization.2.feature:poison free,odour free,high ... .4980.30.4 E07132, Limestone Powder and Lump for PVC