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Refractory Brick

Widely used in metallurgy, machinery, electric power, casting, building materials, petroleum, chemical industry, ceramics and other industries.
  • Commodity name： Refractory Brick

category:

Refractory Brick

Email:

aron@ggbfssupply.com

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  • Description

  • Pack and Ship

    XQ X XQ xq
    xq xq xq xq

    Clay refractory bricks (export type) Physical and chemical index

    Item

    Index

    SK-30

    SK-32

    SK-34

    SK-35

    AL2O3 %    ( ≥ )

    30

    35

    38

    45

    Fe2O3 %   ( ≤ )

    3.0

    2.5

    2.0

    2.0

    Refractoriness(SK)

    30

    32

    34

    35

    Refractoriness under load, 0.2MPa, °C    ( ≥ )

    1250

    1300

    1350

    1400

    Apparent porosity (%)

    22-26

    21-26

    20-24

    20-22

    Bulk density (g/cm³)

    1.90-2.00

    2.00-2.05

    2.10-2.20

    2.15-2.22

    Cold crushing strength , kgf/cm2  ( ≥ )

    200

    200

    250

    300

    Thermal expansion at 1000°C,%(≤ )

    0.8

    0.6

    0.6

    0.5

    Clay refractory bricks (national standard type) Physical and chemical index

    Indicator/Grade

    N-1

    N-2a

    N-2b

    N-3a

    N-3b

    N-4

    N-5

    N-6

    fire resistance  ℃ ≥

    1750

    1730

    1730

    1710

    1710

    1690

    1670

    1580

    0 .2Mpa Start of load softening temperature,    °C   ≥

    1400

    1350

     

    1320

     

    1300

     

     

    Reburning line change  %

    1400℃ , 2h

    +0.1

    -0.4

    +0.1

    -0.5

    +0.2

    -0.5

     

     

     

     

     

    1350℃ , 2h

     

     

     

    +0.2

    -0.5

    +0.2

    -0.5

    +0.2

    -0.5

    +0.2

    -0.5

     

    stomatal rate  % ≤

    22

    24

    26

    24

    26

    24

    26

    28

    Normal temperature compressive strength  Mpa ≥

    30

    25

    20

    20

    15

    20

    15

    15
    Thermal Shock Stability (1100°C water-cooled) N-2b, N-3b This test shall be carried out and the measured data shall be indicated in the certificate of quality.

    High-alumina refractory bricks (export type) Physical and chemical index

    Item

    Index

    SK-36

    SK-37

    SK-38

    AL2O3 % (≥) 

     

     

     

    Fe2O3 % (≤) 

    2.0

    2.0

    2.0

    Refractoriness(SK)

    36

    37

    38

    Refractoriness under load, 0.2MPa, °C (≥) 

    1450

    1450

    1550

    Apparent porosity (%)

    20-22

    20-23

    20-23

    Bulk density (g/cm³) 

    2.20-2.35

    2.30-2.50

    2.40-2.60

    Cold crushing strength   kgf/cm2 (≥) 

    350

    450

    500

    Thermal expansion at 1000°C, %(≤) 

    0.3

    0.3

    0.2

    High aluminium refractory bricks (national standard type) Physical and chemical index

    Indicator/Grade

    LZ-48

    LZ-55

    LZ-65

    LZ-75

    AL2O3%   ≥

    48

    55

    65

    75

    fire resistance ℃ ≥

    1750

    1770

    1790

    		 1790

    0.2 Mpa Load softening onset temperature ℃≥

    1420

    1470

    1500

    1520
    Change in heating permanent line, %

    1500℃ , 2h

     

    0.1-0.4

    1450℃ , 2h

    0.1-0.4

     

    Porosity % ≤

    23

    23

    22

    22

    Normal temperature compressive strength Mpa ≥

     

     

     

     

Keywords:

Refractory Brick

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