normal align=center>锌精矿质量标准

normal align=center>品级

normal align=center>Zn质量分子数不小于 %

normal align=center>杂质质量分子数不大于 %

normal align=center>Cu

normal align=center>Pb

normal align=center>Fe

normal align=center>As

normal align=center>SiO2

normal align=center>一级品

normal align=center>55

normal align=center>0.8

normal align=center>1.0

normal align=center>6

normal align=center>0.2

normal align=center>4.0

normal align=center>二级品

normal align=center>50

normal align=center>1.0

normal align=center>1.5

normal align=center>8

normal align=center>0.4

normal align=center>5.0

normal align=center>三级品

normal align=center>45

normal align=center>1.0

normal align=center>2.0

normal align=center>12

normal align=center>0.5

normal align=center>5.5

normal align=center>四级品

normal align=center>40

normal align=center>1.5

normal align=center>2.5

normal align=center>14

normal align=center>0.5

normal align=center>6.0

注：1、铅精矿中银、硫为有价元素，应报分析数据；2、锌精矿中镉、氟质量分数应分别不大于0.3％，锑质量分数应不大于0.03％，锡质量分数应不大于0.1％，镍和锗质量分数要求，由供需双方商定；3、四级品铁闪锌矿含铁允许量不大于18％