微晶耐磨氧化铝球、衬砖、衬板、衬片性能指标Performance Index of Microlite Abrasive Alumina Ball, Lining Brick, Lining Plate Pieces         产品Product性能指标Performance Index95系列/Series92系列/Series70系列/SeriesAl2O3(%)≥95≥92≥70Fe2O3(%)≤0.2≤0.25≤0.35莫氏硬度M0hs Hardness998吸水率（%）Water Absorption Rate≤0.02≤0.02≤0.02体积密度（g/cm3）Bulk Density≥3.65≥3.60≥3.00磨耗（‰）≤0.10≤0.15≤0.20