Silica Brick

Silica Brick

Silica Brick


Silica brick is an acid refractory material composed of tridymite, cristobalite and a small amount of residual quartz and glass phase. Silica bricks have good resistance to acid slag erosion.

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Product detail

Silica Brick

Composition:SiO2

Application:Coke oven, hot blast stove, glass kiln, etc

SiO2:>=94%

Color:Yellow

Stanard size:230*114*65mm

Raw Material:Quartz sand

Refractoriness:>=1790℃

Package:Export wooden pallets and polyboard

Product Introduction

Silica brick is an acid refractory material composed of tridymite, cristobalite and a small amount of residual quartz and glass phase. Silica bricks have good resistance to acid slag erosion. The refractoriness under load is as high as 1640~1670℃, and the volume is relatively stable under high temperature for long-term use.

Features

1.Good resistance to acid slag erosion.

2.High strength at high temperature.

3.Little dimensional change when using at high temperature for a long time.

Application

It is mainly used for the chamber and combustor of coke oven, regenerator chamber and cinder chamber of steelmaking open hearth furnace, soaking pit, refractory material of glass melting furnace, vault and other load-bearing parts of ceramic kiln .It is also used for high temperature load bearing parts of hot blast furnace and roof of acid open hearth furnace.

Product Parameters

Item KN KD KS Testing In Accordance With
Regenerator Boiler Wall Carbonization Chamber Bottom
Boiler Wall
Oven Roof
ChemicalComposition SiO2 % >=94.5 >=95.0 DIN51070
σ 1.0 1.0 Part 26
Al2O3 % <=2.0 <=1.5 DIN51070
σ 0.3 0.3 Part 36
Fe2O3 % <=1.0 <=1.0 DIN51070
σ 0.2 0.2 Part 56
CaO % <=3.0 <=3.0 DIN51070
σ 0.35 0.35 Part 76
Na2O+K2O % <=0.35 <=0.35 DIN51070
σ 0.02 0.02 Part 86
Residual Quartz Content1) Raw Materials Type A(Coarse Crystalline) % As Per Mutual Agreement (2)
σ 6.0
xmax
Raw Materials Type B(Crypto Crystalline) % 1.5
0.5
Cold Compressive Strength N/mm2 >=282 >=35 >=45 DIN51067 Part 1
σ 10 10 10
xmin 20 25 30
Apparent Porosity % <=24.5 <=22.0 <=22.0 DIN51056
σ 1.3 1.3 1.3
Refractoriness Under Load Initial Temperature ta >=1640 >=1650 DIN51064
σ 25 25
Refractoriness Under Load T0.5℃ (Differential Method) According to Agreements DIN51053
σ Part 1
Compressive Creep 3 % <=0.12 DIN51053Part 2
σ 0.05
% <=0.35
σ 0.1
Refractoriness 4) SK >=170(SK31)5) DIN51063Part 1
σ 2(SK1)5)
Average Thickness Loss mm <=4.5 DIN52108
σ 0.1

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