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| Classification: | High-Alumina |
| Feature: | Long Time Materials |
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Product Introduction
Heat storage brick, refractory checker brick, porous silicon brick belongs to acidic refractory materials, with excellent resistance to acid slag erosion. It has a high softening temperature under load, reaching 1640-1670ºC, and maintains relatively stable volume during long-term use at high temperatures. Silicon brick is mainly composed of scaly quartz, tabular quartz, and a small amount of residual quartz and glass phase, constituting an acidic refractory material.
Lightweight thermal insulation silicon brick is mainly used as insulation material in the glass industry furnaces and acid kilns such as melting furnaces and coke ovens.
For the glass kiln heat storage chamber and hot blast stove, silicon 36-hole heat storage brick porous silicon brick features low linear expansion, low residual quartz content, small true density, high softening point under load, and a regular appearance with precise dimensions. It is mainly used in the high-temperature areas of blast furnaces, hot blast stoves, glass kiln furnaces' heat storage chambers, upper furnace bodies, and upper checker bodies.
Product Attributes
| Type | 0001 | Product Name | Silicon 36-hole heat storage brick | CAS | Refractory castable |
| Compressive Strength | 60(Mpa) | Specifications | National standard, customizable through processing | Thermal Conductivity | 0.03(ºC) |
| Refractory Temperature | 1350(ºC) | Is it a hazardous chemical | No | Customization | Customizable through Processing |
| Application Place | smelting,steelworks,power station,etc. | Standard | National Standard |
Physical and Chemical Indicators
| Item | Indicator | |||
| BG-96A | BG-96B | BG-95A | BG-95B | |
| SIO2% Not less than | 96 | 96 | 95 | 95 |
| Fe2O3% Not greater than | 0.8 | 1 | 1.2 | 1.2 |
| Melt flow index not exceeding | ||||
| Bricks with a single weight <20kg | 0.5 | 0.7 | ||
| Bricks with a single weight ≥20kg | 0.6 | 0.7 | ||
| Softening start temperature at 0.20MPa load not lower than ºC | 1680 | 1670 | 1660 | 1650 |
| Apparent porosity not greater than % | 22 | |||
| Room temperature compressive strength not less than MPa | ||||
| Bricks with a single weight <20kg | 35 | |||
| Bricks with a single weight ≥20kg | 30 | |||
| True density not greater than g/cm³ | 2.34 | 2.35 | ||
Product Features
(1) High softening temperature under load. The silicon brick in the coke oven can withstand the dynamic load of the coal charging car on the furnace top at high temperatures and can be used for an extended period without deformation.
(2) High thermal conductivity. Since coke is formed by heating coal in the coking chamber through the conduction of the combustion chamber walls, the silicon brick used to build the combustion chamber walls should have a high thermal conductivity. In the temperature range of the coke oven combustion chamber, silicon brick has a higher thermal conductivity compared to clay bricks and high alumina bricks. Densely packed coke oven silicon bricks can have a 10% to 20% higher thermal conductivity than ordinary coke oven silicon bricks.
(3) Good thermal shock resistance at high temperatures. Due to the periodic coal charging and coke discharging in the coke oven, there is a significant temperature fluctuation on both sides of the silicon brick in the combustion chamber walls. Normal operation within the temperature fluctuation range does not cause severe cracking and spalling of silicon bricks, as silicon bricks exhibit good thermal shock resistance above 600°C.
(4) High-temperature volume stability. In well-crystallized silicon bricks, the residual quartz is less than 1%, and the expansion during heating is concentrated before 600°C, with a significant slowdown afterward. During normal operation of the coke oven, where the temperature does not drop below 600°C, the changes in the brick structure are minimal, maintaining long-term stability and tightness.
Product Application
Silicon 36-hole heat storage bricks, porous silicon bricks, are primarily used in various furnaces for the following purposes:
Coke Oven Carbonization Chamber and Combustion Chamber Partition Walls: Utilized as partition walls between the carbonization chamber and combustion chamber in coke ovens to support the coke production process.
Steelmaking Hearth Heat Storage Chamber and Slag Chamber: Applied in the hearth of steelmaking furnaces for heat storage and slag handling.
Soaking Pit Furnace: Used as insulation material in soaking pit furnaces to ensure uniform temperature distribution.
Refractory Material for Glass Melting Furnace: Employed as refractory material in glass melting furnaces.
Ceramic Kiln Arch and Other Load-Bearing Areas: Utilized in kilns, such as ceramic kilns, for arches and other load-bearing areas.
Other Load-Bearing Areas: Including various areas in furnaces that require support and stability.
High-Temperature Load-Bearing Areas in Hot Blast Stoves: Applicable in high-temperature load-bearing areas of hot blast stoves.
Acidic Flat Furnace Roof: Used for the roof of acidic flat furnaces, providing resistance to acidic environments.
Product Details
Company Profile
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