Heat Resistant Silica Refractory Bricks For Blast Furnace / Hot Blast Stove

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Low Bulk Density Alumina Silica Fire Brick For Blast Furnace / Hot Blast Stove

 

 

Features

1. High refractoriness
2. Low thermal shock resistance
3. No pollution to glass liquid
4. Low bulk density
 

Applications

Light weight silica brick is mainly used to preserve heat in glass industry, iron&steel industry and ceramic furnace.

 

Physical properties and chemical composition

 

Item

QG-0.8

QG-1.0

QG-1.1

QG-1.15

QG-1.2

SiO2  %

≥88

≥91

≥91

≥91

≥91

Bulk Density g/cm3

≤0.85

≤1.00

≤1.10

≤1.15

≤1.20

Cold Crushing Strength Mpa

≥1.0

≥2.0

≥3.0

≥5.0

≥5.0

0.2Mpa Refractoriness Under Load T0.6  °C

≥1400

≥1420

≥1460

≥1500

≥1520

Permanent Linear Change On Reheating(%)1450°CX2h

0~+0.5

0~+0.5

0~+0.5

0~+0.5

0~+0.5

20-1000°C Thermal Expansich10-6/°C

1.3

1.3

1.3

1.3

1.3

Thermal Conductivity (W/MK) 350°C

0.55

0.55

0.60

0.65

0.70

 

         

Heat Resistant Silica Refractory Bricks For Blast Furnace / Hot Blast Stove