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Zhengzhou Huachen Refractory Co.,Ltd
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Silica Brick

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Zhengzhou Huachen Refractory Co.,Ltd

Silica Brick

Place of Origin : China
Brand Name : Huachen
Model Number : Magnesite brick
Certification : ISO
Packaging Details : Pallet
Delivery Time : 20 days
Payment Terms : T/T , L/C at sight
Supply Ability : 2000 mt/month
MOQ : 25MT
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Silica brick belong to acid refractory material, has good resistance to the ability of acid slag erosion, refractoriness under load is as high as 1640 ~ 1670 ℃, volume is stable at high temperatures and long time using.

It’s mainly used for coke oven of coking chamber and combustion chamber partition, steel-making furnace regenerator and sediment chamber, soaking furnace, glass furnace refractory and ceramic firing kiln vault and other bearing parts. Also used in high temperature bearing parts of the hot blast stove and acid open hearth furnace roof

Name


Item

Silica brick

for

coke oven

G-D

Silica brick

for

hot blast stoves

RG-94

Silica brick

for

glass furnace

BG-95

Normal Silica brick

GZ-95

GZ-94

GZ-93

Chemical

Competent

%

SiO2

≥93

≥94

≥95

≥95

≥94

≥93

Al2O3

≤1.5

≤1.0

≤1.0




Fe2O3

≤1.5

≤1.5

≤1.0




CaO

≤3


≤2.5




True density,g/cm3

≤2.34

≤2.34

≤2.34

≤2.37

≤2.38

≤2.40

Apparent porosity, %

≤22

≤22

≤22

≤22

≤23

≤25

Cold crushing strength, Mpa

≥35

≥35

≥35

≥30

≥25

≥20

Refractoriness ℃

≥1690

≥1710

≥1710

≥1710

≥1710

≥1690

Initial soften point under

load(℃)2MPa×0.6%

1650

≥1650

1650

≥1650

≥1640

≥1620

Creep rate(%)

2MPa·1550℃×2h


≤1





Permanent linear change on reheating,%

1450℃×2h


+0.2





Thermal expansion,% (1000℃)

≤1.25

≤1.25

≤1.26




Application

coke oven

high temperature part of regenerator of hot blast stove

glass furnace

coke oven, hot blast stove, glass furnace and other kinds of industrial furnaces



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