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KERATECH s.r.o. » Refractory materials » Molded materials » High duty fireclay and acid bricks

High duty fireclay and acid bricks

 

High Duty Fireclay Bricks - KOSAM are used to furnace linings in metallurgy, shaft and rotary furnaces for firing lime and cement, boilers, chimneys and other thermal aggregates exposed to abrasion, molten metals, slags and chemical impacts.

Acid Bricks - KOSAM are used to thermal aggregate linings where is requiring resistant to acid surroundings for example chimneys in power engineering, pickling line. Low Alumina Fireclay Brick - KOSAM AI is used to electrolyzer permanent linings of aluminium production.

 

Product Line

HIGH DUTY FIRECLAY BRICKS

ACID BRICKS

Low Alumina Fireclay Brick

 

Brand Name

KOSAM TB

KOSAM TB-J

KOSAM VC

KOSAM PD

KOSAM KS

KOSAM KS-H

KOSAM Al

 

Classification According to EN

EN ISO 10081-1

FC 35

FC 35

FC 35

FC 35

LF 10

LF 10

LF 10

Base Material

 

Fireclay

Fireclay

 

Al₂O₃ Content (%)

min.

38

-

37

36

max.33

max.30

max.34

 

Ř

40

38,5

39

37

32

29

-

 

Fe₂O₃ Content (%)

Max.

2,5

-

2,6

2,6

1,6

1,5

-

 

Ř

1,8

2,1

1,9

2

1,5

1,4

-

 

SiO₂ Content (%)

Max.

-

-

-

-

61

65

Min. 60

 

Ř

-

-

-

-

62

66

-

 

Bulk Density (kg.mł)

Min.

2100

2100

2090

2070

2000

2090

2150

 

Ř

2220

2190

2190

2170

2160

2150

-

 

CCS (MPa)

Min.

30

25

25

25

50

40

55

 

Ř

35

40

30

28

55

50

-

 

Apparent Porosity (%)

Max.

18

21

19

22

20

14

16

 

Ř

17

19

18

21

16

10

-

 

Refractoriness Under Load t₀,₆ (°C)

Min.

1470

1440

1460

1450

-

-

-

 

Ř

1530

-

1520

1500

-

-

-

 

Refractoriness PCE

Min.

170

-

170

168

-

-

-

 

Ř

172

168

170

170

-

-

-

 

PLC (%)

T/time

1400/5

1500/5

1400/5

1400/5

-

-

-

 

Ř

±0,2

±0,5

±0,3

±1

-

-

-

 

H₂SO₄ Resistance (Weight Loss in %)

Max.

-

-

-

-

2

1,5

-

 

Ř

-

-

-

-

1,5

1,2

-

 

Cryolite Resistance (cm˛)

Typ.

-

-

-

-

-

-

4,5

 

Average Pore-Diameter (µm)

Typ.

-

-

-

-

-

-

5

 

Servis Temperature (°C)

Max.

1500

1500

1480

1450

1400

1400

1500

 

Thermal Conductivity (W.m⁻ą.K⁻ą)

20°C

-

-

-

-

1,225

-

-

 

300°C

-

-

-

-

1,369

-

1,61

 

600°C

-

-

-

-

1,573

-

1,73

 

800°C

-

-

-

-

1,645

-

-

 

900°C

-

-

-

-

-

-

1,88

 

1000°C

-

-

-

-

1,72

-

-

 

1100°C

-

-

-

-

1,872

-

-

 

1150°C

-

-

-

-

1,911

-

-

 

·  CCS – Cold Crushing Strength

 

·  PLC – Permanent Linear Changes

 

News


30.12.2015 | We have build 4 chamber furnaces at VSMPO-AVISMA (Russia)

We have build 4 electrical chamber electrical heating furnace (AMS 2750E) for titanium alloys.

15.10.2015 | We have build two push-type furnaces at MPZ

We have build 2 pushing furnaces at MPZ (Belarus).

03.11.2014 | We have build two car bottom electrical furnaces

We have build two electrical car bottom chamber furnaces for heat treatment of titanium. Company - "VSMPO-AVISMA" (Russia). Furnaces under norm AMS 2750.
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