Low cement castable for cement kiln

product name

Ordinary alkali resistant castable

Strong Alkali Resistant Castable

Higher aluminum stronger castable

Corundum castable

Mullite castable

Mullite high-strength castable

Mullite steel fiber reinforced castable

Grade

GT-13N

GT-13NL

G-16

G-18

MJ-65

MJ-75

MJ-75L

chemical composition（%）

Al₂O₃+SiC ≥

70

88

65

75

75

SiO₂ ≤

25

20

20

Higher use temperature（℃）

1300

1300

1500

1700

1500

1600

1600

Bulk Density（g/cm³）110℃×24h

2.2-2.4

2.2-2.4

2.7

3

2.5

2.75

2.75

Compressive strength / flexural strength（MPa）

110℃×24h

40/5.0

70/7

85/10

80/10

80/10

85/10

100/10

1100℃×3h

20/2.5

80/8

90/10

100/12

100/12

100/12

110/10

1500℃×3h

100/13

100/12

120/12

120/12

Line change rate（%）

1100℃×3h

-0.3

-0.3

-0.3

0.2

0.3

0.3

0.3

1500℃×3h

±0.5

±0.5

-0.5

-0.5

Add water（%）

9~10

6~7

6~7

5~7

5~7

4.5~6.5

4.5~6.5

Construction methods

Vibration, ramming, spraying

use

Class 1 ~ 4 preheater and relevant parts of corresponding pipes

Class 5 preheater, decomposition furnace, rising flue, secondary air duct, chain, etc.

Cement kiln front and rear kiln mouth, kiln door cover, front of cooler and other higher temperature parts

Front kiln mouth of large cement kiln, tertiary air duct, burner, etc.

High temperature parts such as kiln mouth and cooler before and after cement kiln

Large cement kiln front and rear kiln mouth, coal injection pipe and other high wear-resistant parts and other kiln linings

Same as MJ-75, but its strength and thermal stability are better than MJ-75

characteristic

Early strength is high, demoulding and curing time is short, and the construction period is greatly shortened. Adding steel fiber has better abrasion resistance and resistance to spalling.