Item

Unit

Technical requirement

Particle size

mm

3-5

4-6

5-8

8-10

AL2O3

%

≥93

≥93

≥93

≥93

SiO₂

%

≤0.10

≤0.10

≤0.10

≤0.10

Fe₂O₃

%

≤0.04

≤0.04

≤0.04

≤0.04

Na₂O

%

≤0.40

≤0.40

≤0.40

≤0.40

Attrition Loss

%

≤0.08

≤0.08

≤0.08

≤0.08

Bulk density

g/ml

≥0.75

≥0.75

≥0.75

≥0.75

Surface area

㎡/g

≥320

≥320

≥320

≥280

Pore Volume

ml/g

≥0.43

≥0.45

≥0.45

≥0.45

Water absorption

%

≥55

≥55

≥55

≥55

Crushing Strength (N/Particle)

N/particle

≥180

≥200

≥260

≥350