Item
Standard Value
Test Value
Al2O3(%)
≥99
99.74
Fe2O3 (%)
≤0.05
0.02
SiO2(%)
≤0.10
0.03
Na2O(%)
≤0.15
0.07
?
D50(μm)
≤3.00
2.38
D90(μm)
≤10.00
8.90
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