A Study on the Calcinations Characteristic of the PCC Synthesis from Waste Limestone

摘要

High quality limestone is widely used as raw materials in high added-value industry because of its high-inflected character. But almost all low quality limestone is out of use in high added-value industry, especially PCC s synthesis from its low inflected character. In this study, various quick limes were obtained from the waste limestone by the change of raw limestone size, calcination temperature, calcinations time and so on then, the shape of PCC powder produced by hydration and carbonation was investigated. So it was clarified that calcination characteristic of waste limestone affect the shape of PCC powder and that waste limestone is possible to use as raw materials for PCC.