normal align=center>锆石英精矿质量指标（YB834—75）

normal align=center>等级

normal align=center>（Zr，Hf）O2质量分子数%

normal align=center>杂质质量分子数%

normal align=center>TiO2

normal align=center>P2O5

normal align=center>Fe2O3

normal align=center>一级品

normal align=center> 

normal align=center>一类

normal align=center>≥65

normal align=center>≤0.5

normal align=center>≤0.15

normal align=center>≤0.30

normal align=center>二类

normal align=center>≥65

normal align=center>≤1.0

normal align=center>≤0.30

normal align=center>≤0.30

normal align=center>二级品

normal align=center>≥63

normal align=center>≤2.0

normal align=center>≤0.50

normal align=center>≤0.70

normal align=center>三级品

normal align=center>≥60

normal align=center>≤3.0

normal align=center>≤0.80

normal align=center>≤1.00