英砂指標(biāo)：

 高級砂                         保證值                       實際值

                    Zr(Hf)O2   65.50%                    66.00%

                      Fe2O3       0.10%                     0.08%

                       TiO2         0.15%                     0.10%                 

 標(biāo)準(zhǔn)砂                              

                     Zr(Hf)O2   65.00%                   

                       Fe2O3      0.10%

                          TiO2       0.15%

粒度               80-120目

鋯英粉              325目