Silica refractory checker brick for hot blast stove

Place of Origin: Hebei, China (Mainland)

Shape: Brick

Material: silica stone

SiO2 Content (%): >96%

Al2O3 Content (%): 0.23-0.45

MgO Content (%): 0.8-1.2

CaO Content (%): 0.01

Refractoriness (Degree): 1770°< Refractoriness< 2000°

CrO Content (%): 0.1~0.3%

SiC Content (%): 0.1~1.4%

Model Number: 96A

Brand Name: XUANKUN

Color: Yellow

Size: Customizable

Type: Factory

Bulk Density: 2.0-2.5g/cm3

Certificate: ISO BV SGS

Raw material: SiO2

Fe2O3: 0.5% Max

Advantage: Thermal Shock Resistance

Cold crushing strength(mpa): 40

Introduction of silica brick:

Silica brick is made of quartz stone material, the content of SiO2 is above 96%,it has good resistance to acid slag and good heat conductivity. And the refractoriness is 1690~1710°C,RUL is beyond 1680°C.

SiO2 has different types of crystals in different temperatures, and the transform between the crystals will cause the change of the bulk. So there is a close contact between the changes of SiO2 crystals and the produce ,performance and usage of silica bricks. During the heating, there will be changes of the bulk ,and cristobalite changes most, then quartz, phosphorus quartz is the slowest of all and it also has good heat-conductivity.Coke oven should use the silica brick with small true density. And the phosphorus quartz is better than others.

Feature of silica brick :

1.Better durability. It can withstand continuous heat load within the temperature limits.

2.Low thermal conductivity. It has the incomparable insulation performance within the application range.

3.Light weight and high specific strength. Its specific strength is the highest among the rigid insulation materials.

4.Long service life. It will not produce the powder after long periods of operation as the ceramic fiber felt will do.

5.Better application adaptability. It can be Free Cutting by ordinary woodworking tools.

6.Safe and clean. It has not toxic materials such as asbestos sulfur and chlorine.

Not afraid of wetted. Its performance remain unchanged after being dried

Advantage of silica brick :

1.Good acid and erosion resistance, powerful anti high-temperature strength.

2.Soften melting temperature is 1680 °C.

3.Low thermal shock resistance.

4.Natural silica as raw material, plus regular mineralizer.

5.Ensure good bonding and structural strength of furnace.

6.Good heat resistance and long service life.

Application of silica brick :

1.Metallurgical industry: the blast furnace, blast furnace hot blast stove, heating furnace, etc.

2.Petrochemical industry: ethylene cracking furnace, hydrogen furnace, a furnace, furnace, etc.

3.Ceramic industry: roller kiln, push board kiln, etc.

4.Industry: glass kiln heat storage room, etc.

5.Carbon industry: carbon calciner, etc

Aluminum electrolytic industry: aluminum electrolytic tank, etc.

Other industries: tunnel kiln, shuttle kiln, etc