normal align=center>品级

normal align=center>滑石ω（B）%

normal align=center>ω（CaO）%

normal align=center>ω（Fe2O3）%

normal align=center>白度

normal align=center>特级品

normal align=center>≥90

normal align=center>≤1.5

normal align=center>≤0.5

normal align=center>≥90

normal align=center>一级品

normal align=center>≥80

normal align=center>≤2.5

normal align=center>≤1.0

normal align=center>≥80

normal align=center>二级品

normal align=center>≥70

normal align=center>≤3.5

normal align=center>≤1.5

normal align=center>≥70

normal align=center>三级品

normal align=center>≥50

normal align=center>不限

normal align=center>≤2.0

normal align=center>≥60

normal align=left>注：1、品级变化大，不能细分时，可将特、一、二级品合并称富矿，三级品称贫矿；2、三级品滑石矿尚需确定应用方向，对口勘探