• Silica Brick for Coke Oven
  • Silica Brick for Coke Oven
  • Silica Brick for Coke Oven
  • Silica Brick for Coke Oven

Silica Brick for Coke Oven

  • SiO2 :≥94.5
  • Refractoriness Under Load (0.2MPa) :≥1650
  • AL2O3 :≤1.0
  • CaO :≤2.5
  • Thermal Expansion Rate (1000℃):≤1.28
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CUNSE silica brick for coke oven is made of quartz stone materials, the content of SiO2 is ≥ 94.5%.

CUNSE has its own mine in TiemenTown in LuoyangCity, (Famous for its crystalline quartz stone), to ensure the best quality from the high grade materials.

Over the years, CUNSE has been provided high quality silica bricks for steel plants at Nagoya, Muroran and Oita of Nippon Steel and the products have been proved world-class products.

 

Features:

1. Good acid and slag resistance.

2. Good thermal conductivity.

3. High tridymite content.

4. Accurate dimension and good appearance.

 

Application:

Mainly used for coke oven of coking chamber and combustion chamber partition, steel open hearth of regenerative chamber and sediment chamber, soaking furnace, glass melting furnace, refractory silica brick materials and ceramic firing kiln and kiln of the vault and other supporting parts.

Used in the construction of regenerative chamber, chute, combustion chamber, coking chamber, furnace roof etc. parts of the coke ovens.

Also used in hot blast stove of high temperature bearing parts and the roof of acid open hearth furnace.


Properties

KN

KD

KS

Regenerator

Wall Bricks

Carbonization Chamber Bottom

Wall Bricks

Oven Roof

Chemical

SiO2

%  μG

≥94.5

≥95.0

composition

σ

1

1

 

AL2O3

%  μG

≤2.0

≤1.5

 

σ

0.3

0.3

 

Fe2O3

%  μG

≤1.0

≤1.0

 

σ

0.2

0.2

 

CaO

%  μG

≤3.0

≤3.0

 

σ

0.35

0.35

 

Na2O+K2O

%  μG

≤0.35

≤0.35

 

σ

0.02

0.02

Residual quartz content1)

Raw Materials Type A
(coarse crystalline)

%  μG

As per mutual agreement

σ

6

xmax

 

Raw Materials Type B
(crypto crystalline)

%

1.5

σ

0.5

 

 

Cold Compressive Strength

N/mm2μG

≥282

≥35

≥45

  σ

10

10

10

xmin

202

25

30

Apparent Porosity

%    μG

≤24.5

≤22.0

≤22.0

σ

1.3

1.3

1.3

Refractoriness Under Load Initial Temperature ta

℃   μG

≥1640

≥1650

σ

25

25

Refractoriness Under Load T0.5℃
(differential method)

℃   μG

As per mutual agreement

σ

Compressive Creep

%   μG

≤0.12

-

σ

0.05

-

%    μG

≤0.35

-

σ

0.1

-

Refractoriness4)

SK  μG

≥170(SK31)5)

-

-

σ

2(SK1)5)

-

-

Average Thickness Loss

mm  μG

-

-

≤4.5

 σ

-

-

0.1

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