BRAND

ITEM

Fireclay

High Alumina

Andalusite

JZN-40

JZN-36

JZL-55

JZL-65

JZL-50

JZH-57

Al₂O_{3  %}

≥40

≥36

≥55

≥65

≥50

≥57

Fe₂O_{3  %}

≤2.0

Refractoriness °c

≥1720

≥1700

≥1770

≥1790

≥1770

≥1790

Permanent linear

change

1350°c x

2h0.1~-0.3

1350°cx

2h0.1~-0.3

1450°cx

2h±0.3

1500°cx

2h±0.3

Apparent porosity

17-15

17-25

≤24

≤24

≤26

≤26

Bulk density g/cm³

≥2.20

≥2.30

≥2.10

≥2.30