1. Ball clay : physical properties  typicalchemical properties  typical moisture content %31 sio247.62 residue on 240#%12 al2o337.09 green mor kg/sqcm6.8 fe2o30.89 dry mor kg/sqcm24 tio20.9 firing temp/cycle min1215/60 cao0.42 fired shrinkage %10.4 mgo0.2 fired mor kg/sqcm184 k2o0.15 water