normal align=center>铅精矿质量标准

normal align=center>品级

normal align=center>Pb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>Zn

normal align=center>As

normal align=center>MgO

normal align=center>Al2O3

normal align=center>一级品

normal align=center>70

normal align=center>1.2

normal align=center>4

normal align=center>0.2

normal align=center>1.0

normal align=center>2.0

normal align=center>二级品

normal align=center>65

normal align=center>1.5

normal align=center>5

normal align=center>0.3

normal align=center>1.5

normal align=center>2.5

normal align=center>三级品

normal align=center>55

normal align=center>2.0

normal align=center>6

normal align=center>0.4

normal align=center>1.5

normal align=center>3.0

normal align=center>四级品

normal align=center>45

normal align=center>2.5

normal align=center>7

normal align=center>0.6

normal align=center>2.0

normal align=center>4.0

normal align=center>注：铅精矿中金、银为有价元素，应报分析数据；其他类型铅精矿的杂质要求由供需双方商定