CZRUEN


High alumina bricks

High Alumina Bricks – ALKO - their typical properties include high refractoriness, crushing strenght, density, abrasion resistence and with increased resistence to molten metals, slags, glass and other chemici impacts. They are used to walls, rous and extremely stress parts of metalurgy aggregates (hot blast stoves, blast pipes, gorn of blast furnaces, torpedo ladles and pouring ladles for raw metal, casting ladles), shaft and rotary furnaces for firing lime and cement, linings of tunnel fonace  of firing ceramics, turner blocks and ceramics burners‘ endings

Product Line

HIGH ALUMINA BRICKS

Brand Name

 

ALKO 50 VZ

ALKO 55 A

ALKO 60 A

ALKO 63

ALKO 65 M

ALKO 72 M

ALKO 70 LC

Classification According to EN

EN ISO 10081-1

HA 45

HA 55

HA 55

HA 55

HA 65

HA 65

HA 65

Base Material

 

Andalusite

Mullite

Fireclay/Corundum

Al₂O₃ Content (%)

Min.

50

55

60

63

65

72

68

Ř

53

56

60,5

63,5

66

73

69

Fe₂O₃ Content (%)

Max.

3

1,2

1,2

1,2

2,2

1,5

0,9

Ř

2,3

1,1

0,9

0,9

1,8

0,9

0,8

Bulk Density (kg. m⁻ł)

Min.

2150

2500

2440

2500

2300

2450

2500

Ř

2240

2530

2520

2520

2480

2550

2510

CCS (MPa)

Min.

-

55

55

40

40

40

50

Ř

-

60

70

60

45

60

60

Apparent porosity (%)

Max.

-

15

17

18

22

20

20

Ř

24

12

14

15

18

18

18

Refractoriness Under Load t₀ˏ₆ (C)

Min.

-

1600

1650

1650

1600

1650

1550

Ř

-

1620

1700

1700

1640

1700

1650

Refractoriness PCE

Ř

178

178

180

180

180

180

180

PLC (%)

T/time

1500/2

1400/5

1500/2

1500/4

1500/4

1500/2

1500/5

Ř

-0,5

0,2

0,2

0,5

0,2

0,2

0,2

Servis Temperature (C)

Max.

1550

1550

1650

1650

1600

1650

1600

Thermal Conductivity (W.m⁻ą.K⁻ą)

100C

-

-

-

-

-

-

-

250C

-

-

-

-

-

-

-

500C

-

-

-

-

-

-

-

750C

-

-

-

-

-

-

-

1000C

-

-

-

-

-

-

-

1100C

-

-

-

-

-

-

-

1250C

-

-

-

-

-

-

-

Product Line

HIGH ALUMINA BRICKS

Brand Name

 

ALKO 70 B

ALKO 75 B

ALKO 80 B

ALKO 84

ALKO 84 P

Classification According to EN

EN ISO 10081-1

HA 65

HA 75

HA 75

HA 75

HA 75

Base Material

 

Bauxite

Al₂O₃ Content (%)

Min.

67

75

80

84

84

Ř

69

-

82

85

84

Fe₂O₃ Content (%)

Max.

2,5

2

1,8

1,8

1,8

Ř

2

-

1,6

1,5

1,5

Bulk Density (kg. m⁻ł)

Min.

2350

2600

2650

2900

3000

Ř

2540

-

2800

3010

3020

CCS (MPa)

Min.

30

60

45

65

80

Ř

40

-

60

80

100

Apparent porosity (%)

Max.

25

23

20

18

16

Ř

22

-

18

15

14

Refractoriness Under Load t₀ˏ₆ (C)

Min.

-

1560

1580

1620

1620

Ř

1670

-

-

1680

1680

Refractoriness PCE

Ř

180

180

180

180

180

PLC (%)

T/time

1400/5

1400/5

1400/5

1500/5

1500/5

Ř

1

0,5

0,4

0,5

-0,2

Servis Temperature (C)

Max.

1550

1650

1650

1700

1700

Thermal Conductivity (W.m⁻ą.K⁻ą)

20C

6,862

-

-

-

-

300C

1,911

-

-

2,98

-

500C

-

-

-

2,46

-

600C

1,925

-

-

-

-

650C

-

-

-

2,34

-

800C

2,083

-

-

-

-

850C

-

-

-

2,39

-

1000C

2,214

-

-

-

-

1100C

1,872

-

-

2,73

-

1250C

3,452

-

-

-

-

1300C

-

-

-

2,78

-

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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