Type

Item

Activated alumina absorbent

Activated alumina desiccant

Activated alumina catalyst carrier

General type

High strength type

General type

Air separation type

Crystal type

Y

X-P

Y

Chemical composition%

AL2O3

≥92

≥93

≥90

≥95

Na2O

                        ≤0.3

Other

6-8

<10

<5

Physical property

Size 

mm

ø2-3

ø5-8

ø2-3

ø2-3

ø3-5

ø3-5

ø3-5

ø4-6

ø4-6

ø4-6

Surface area m2/g

≥300

300-325

≥300

350±20

200-400

Porosity ml/g

≥0.35

≥0.5

0.4±0.05

0.4±0.03

0.4-0.6

Static water absorption %

≥15

17-19

≥15

≥19

≥28

Bulk density g/ml

0.68-0.72

0.74-0.77

         0.68-0.72

Abrasion rate %

                       ≤0.4

Crush strength

N/granule

ø2-3

≥70

222----311

ø2-3

≥70

ø2-3

≥70

ø3-5

≥100

ø3-5

≥100

ø3-5

≥100

ø4-6

≥100

ø4-6

≥100

ø4-6

≥100