Alumuna Hollow Ball Insulating Fire Brick

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Specifications

1. High temperature resistance.
2. Good thermal insulation.
3. Professional manufacturer.

Alumina hollow ball brick, Alumina bubble brick , Alumina hollow sphere brick , Hollow alumina sphere bricks

Alumina hollow ball brick used the alumina hollow ball,corundum powder,and calcined powders mixed at definite proportion as raw material. After mixing, drying, forming, firing at high temperature shuttle kiln made.

Physical and chemical index:

Item	ZYL-84	ZYL-90	ZYA-1.2	ZYA-1.5	ZYA-1.7
Al₂O₃ % ≥	84	90	98.5	98.5	98.5
Fe₂O₃ % ≤	0.8	0.5	0.3	0.3	0.3
SiO₂ % ≤	15	9	1.0	1.0	1.0
Bulk density, g/m3,≤	1.5	1.5	1.2	1.5	1.7
Porosity,%, ≥	58	60	62	60	58
CCS,Mpa, ≥	16	15	3	12	15
Thermal conductivity, 1000°C,( W/m.k )≤	1.2	1.15	0.95	1.05	1.15
0.1Mpa RUL,°C ≥	1650	1700	1700	1700	1700
Refractoriness,°C ≥	1800	1800	1800	1800	1800

Characteristic:

1. High temperature resistance.

2. Low thermal conductivity.

3. Good thermal insulation.

4. High strength.

5. Can direct contact with flame.

6. Good chemical stability (acid-base erosion resistance ).

7. Low bulk density (lighter than the same kind of material ,thin kiln wall, low cost ) .

Q: Do insulating fire bricks have a high thermal stability?: Insulating fire bricks possess a remarkable level of thermal stability, as they are specifically engineered to endure elevated temperatures without degradation or the loss of their insulating properties. Crafted from top-notch refractory materials capable of withstanding extreme temperatures, these bricks are exceptionally well-suited for situations where thermal stability is of utmost importance. Their low thermal conductivity enables them to effectively trap and retain heat, thus preventing its escape. Consequently, they are particularly valuable in environments necessitating consistent temperatures, such as furnaces, kilns, and various high-temperature industrial processes. In summary, insulating fire bricks are renowned for their exceptional thermal stability, rendering them a dependable option for applications demanding insulation and safeguarding against high temperatures.

Q: Are insulating fire bricks suitable for outdoor applications?: Insulating fire bricks are generally unsuitable for outdoor use. They are designed for high-temperature environments like kilns, furnaces, and industrial settings, offering excellent thermal insulation and withstanding extreme heat. Nevertheless, insulating fire bricks are vulnerable to moisture, rain, and harsh weather conditions outdoors. They can easily be damaged and are not resistant to freezing and thawing, leading to cracks and breakage. For outdoor applications, it is advisable to opt for fire bricks specifically designed for such purposes. These bricks are typically made of dense clay or other materials that can endure moisture and weather conditions. They are more robust and offer superior protection against the elements. Before choosing the appropriate fire bricks for your outdoor needs, it is essential to take into account the specific requirements and conditions of your application. Seeking guidance from a knowledgeable professional or supplier in fire bricks can ensure that you select the suitable product for your requirements.

Q: Can insulating fire bricks be used in copper smelting furnaces?: Yes, insulating fire bricks can be used in copper smelting furnaces. These bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for use in copper smelting processes where heat retention and efficiency are important.

Q: Can insulating fire bricks be used in the construction of gas kilns?: Yes, insulating fire bricks can be used in the construction of gas kilns. These bricks are designed to withstand high temperatures and provide excellent insulation, making them suitable for gas kilns where heat retention is crucial.

Q: Are insulating fire bricks suitable for use in kilns?: Yes, insulating fire bricks are suitable for use in kilns. Insulating fire bricks are specifically designed to withstand high temperatures and provide excellent insulation properties. They are made from lightweight materials that have low thermal conductivity, allowing them to retain heat efficiently and reduce heat loss. This makes them ideal for lining kilns as they help to maintain consistent and controlled temperatures, improving energy efficiency and reducing fuel consumption. Additionally, insulating fire bricks have good resistance to thermal shock, meaning they can withstand rapid and extreme temperature changes without cracking or breaking. Overall, insulating fire bricks are a reliable and effective choice for kiln linings, ensuring optimal performance and prolonging the lifespan of the kiln.

Q: Can insulating fire bricks be used in pottery kilns?: Pottery kilns can indeed utilize insulating fire bricks. These bricks, also referred to as refractory bricks, possess a specialized design that enables them to endure high temperatures and provide insulation to retain heat within the kilns. Alumina, silica, and other refractory materials are employed in the creation of these bricks, as they possess exceptional thermal resistance properties. The utilization of insulating fire bricks in pottery kilns aids in the maintenance of a consistent temperature, reduction of heat loss, and ensures efficient firing of clay and glazes. Moreover, these bricks contribute to the elongation of the kiln's lifespan by safeguarding the interior walls from extreme temperatures. Consequently, insulating fire bricks represent an ideal choice for pottery kilns and are extensively employed in the pottery industry.

Q: Are insulating fire bricks resistant to carbon dioxide?: Yes, insulating fire bricks are resistant to carbon dioxide.

Q: Can insulating fire bricks be used in electric furnaces?: Yes, insulating fire bricks can be used in electric furnaces. These bricks are specifically designed to withstand high temperatures and provide excellent insulation, making them suitable for use in electric furnaces where heat retention is crucial.

Q: Do insulating fire bricks have a high electrical resistivity?: Yes, insulating fire bricks typically have a high electrical resistivity. The high resistivity of these bricks helps to prevent the flow of electric current, making them suitable for insulation purposes in various applications.

Q: Can insulating fire bricks be cut to size?: Yes, insulating fire bricks can be cut to size. Insulating fire bricks are typically made from lightweight refractory materials, such as expanded clay or vermiculite, which makes them relatively easy to cut. They can be cut using common tools like saws or knives. It is important to note that when cutting insulating fire bricks, safety precautions should be taken, such as wearing protective goggles and a dust mask, as the cutting process may generate dust and small particles. Additionally, it is advisable to follow manufacturer's instructions or seek professional advice to ensure the proper technique and tools are used for cutting insulating fire bricks.

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