Insulating Fire Brick - Carborundum Refractory Fire Brick

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Specifications

1.Passed ISO 9001;
2.57% Alumina content,or as customized;
3. Carborundum Fire Brick is widely used in iron-making.

AL₂O₃SiCC carborundum fire brick are universal materials for the lining of molten pretreatment equipments of molten iron tank, torpedo car, etc. The products are shaped by machine power by using dense bauxite clinkerand brown fused alumina as base materials and adding high quality SiC fines and high purity glake fraphite. It has the advantages of excellent slag resistance, thermal shock resistance, good resistance to mechanical erosion, abrasion resistance, etc.

Carborundum products belong to high grade refractory material,maximal use temperature is 1500°C,it has excellent thermal conductivity,heat shock stability,high load softening point and very good wear-resisting property,widely used in various industries with special requirement.

Item		Si3N4 bonded SiC brick	Sialon bonded SiC brick	Sialon bonded corundum brick
SiC, % ≥		72	70	80 (Al2O3)
Si3N4, % ≥		20	5 (N)	5 (N)
Fe2O3, % ≤		0.7	0.7	0.7
Bulk density g/cm3, ≥		2.65	2.65	3.1
Apparent porosity %,≤		16	16	16
CCS MPa, ≥		150	150	120
MOR Mpa	Room temp. ≥	42	42	12
MOR Mpa	1400°C×0.5hrs ≥	45	42	20
Refractoriness under load °C ≥ (0.2MPa, 0.6%)		1700	1700	1700
Thermal shock resistance, cycles (Water quenching at 1100°C)≥		30	30	30

Q: Are insulating fire bricks suitable for use in coke ovens?: Coke ovens demand bricks capable of enduring exceedingly high temperatures and harsh chemical surroundings, rendering insulating fire bricks unsuitable for such purposes. Insulating fire bricks are primarily engineered to offer thermal insulation and lack the capability to withstand the heat and chemical exposure inherent in coke ovens. Consequently, it becomes imperative to employ refractory bricks custom-built for coke ovens, boasting exceptional resistance to temperature, chemical assaults, and thermal shock. Typically composed of robust materials like silica, alumina, and carbon, these refractory bricks exhibit remarkable resilience within the formidable conditions prevalent in coke ovens.

Q: Can insulating fire bricks be recycled?: Yes, insulating fire bricks can be recycled. These bricks are often made from materials such as clay, shale, or kaolin, which can be crushed and reused to make new bricks. Additionally, some manufacturers offer recycling programs where old or damaged fire bricks can be returned and repurposed. Recycling insulating fire bricks is an environmentally-friendly solution that helps reduce waste and conserve resources.

Q: Are insulating fire bricks resistant to oil and gas?: Insulating fire bricks typically offer resistance against oil and gas. These bricks are crafted from high temperature materials like alumina and silica, which grant exceptional thermal insulation qualities and can endure elevated temperatures. They are commonly employed in industries where exposure to heat occurs, such as furnaces, kilns, and fireplaces. Nevertheless, it is crucial to acknowledge that the resistance to oil and gas can vary depending on the precise composition and manufacturing process of the insulating fire bricks. Certain bricks may exhibit higher resistance to oil and gas compared to others. To guarantee the utmost resistance to oil and gas, it is recommended to utilize insulating fire bricks that are specifically engineered for such applications. These bricks are often known as oil and gas resistant fire bricks and are formulated with supplementary additives or coatings that enhance their resistance to these substances. In conclusion, although insulating fire bricks generally offer resistance to oil and gas, it is advisable to employ bricks that are specifically tailored for such applications to ensure optimal performance and longevity.

Q: Can insulating fire bricks be used in kilns or furnaces?: Yes, insulating fire bricks can be used in kilns or furnaces. Insulating fire bricks are designed specifically to withstand high temperatures and thermal shock, making them ideal for use in kilns or furnaces. They have excellent insulating properties, which help to conserve heat and improve energy efficiency. Additionally, insulating fire bricks are lightweight and easy to install, making them a popular choice for lining the walls and floors of kilns or furnaces. Overall, insulating fire bricks are a reliable and effective solution for maintaining high temperatures and ensuring optimal performance in kilns or furnaces.

Q: Are insulating fire bricks resistant to high-pressure environments?: Insulating fire bricks, despite their excellent thermal insulation properties and high temperature resistance, are not explicitly engineered to endure high-pressure surroundings. Their capacity to withstand pressure is restricted. Generally, insulating fire bricks are employed in low-pressure scenarios where their insulation properties take precedence over their ability to endure pressure. If there is apprehension about a high-pressure environment, it is advisable to utilize alternative refractory bricks that are explicitly designed for such conditions, such as dense fire bricks or high-alumina bricks. These alternatives provide superior strength and pressure resistance.

Q: Can insulating fire bricks be custom-made?: Yes, insulating fire bricks can be custom-made to meet specific requirements and dimensions.

Q: Are insulating fire bricks resistant to hydrofluoric acid?: Hydrofluoric acid is a highly corrosive substance capable of attacking and dissolving various materials, including fire bricks, which lack resistance to it. Therefore, it is crucial to exercise utmost caution and employ suitable protective gear while dealing with this hazardous substance.

Q: Can insulating fire bricks be used in ladle covers?: Insulating fire bricks can indeed be used in ladle covers. These bricks are specially designed to have low thermal conductivity, which means they can effectively insulate and retain heat. Ladle covers are used in foundries and other high-temperature industries to keep molten metal or other materials hot and prevent heat loss. By using insulating fire bricks in ladle covers, the heat is better retained, resulting in improved energy efficiency and reduced fuel consumption. Additionally, these bricks have high refractory properties, allowing them to withstand the extreme temperatures and thermal shock that ladles are subjected to. Overall, insulating fire bricks are an excellent choice for ladle covers, as they help to maintain temperature stability and conserve heat.

Q: Can insulating fire bricks reduce heating or cooling costs?: Yes, insulating fire bricks can help reduce heating or cooling costs. These bricks are designed to have low thermal conductivity, which means they prevent heat transfer between the indoor and outdoor environment. By using insulating fire bricks to build or line the walls of a building, less heat is lost during the colder months and less heat is gained during the hotter months. This can result in lower energy consumption and reduced heating or cooling expenses.

Q: Can insulating fire bricks be used for chimney lining?: Yes, insulating fire bricks can be used for chimney lining. Insulating fire bricks are designed to withstand high temperatures and are excellent for insulating chimneys, providing thermal protection and enhancing energy efficiency.

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