ZHEN Feng, XUE Jiangpin

( Teaching Dept.)

Abstract:  The Paper introduces a method of measuring CaCO₃ contents in glaze ash with EDTA method, The method is called semi-quantity measurement because the raw material is supposed to be pure matter and impurities are ignored to exist during the prosessing of glaze-ash production. As for the resuit of measurement, the accuracy is not high, however, the method is still of effective correctness relatively and is also an economical measurement for there is no better simple and rapid measuring method for quantity so far, such as for measuring CaCO₃ quantity in glaze-ash The result measured with EDTA method suits the process of glaze-ash production te chnology.

Keywords:  CaCO₃, glaze-ash