Mullite Insulating Fire Brick

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High Quality Insulating Fire Brick GJM23-26 Insulation Bricks

The raw material is crude highquality highalumin low ferrous content material. The unique polylight spheres producing technique is adopted. The main structure of this high-quality heat insulation refractory brick is mullite crystal phase. The characteristics of this product are:

High compression strength

Good high-temperature performance

Excellent thermal shock stability

Low thermal conductivity

Outstanding penetration resistance ability

Erosion resistance

Application:

It may be widely used as the lining and the heat insulation layer of industrial kilns in the fields of metallurgy, petrochemistry, machinery, power, ceramics, etc... It is an ideal product of long service life, energy-saving and effects-enhancing product.

Brand Item	JM-23	JM-26	JM-28	JM-30
Al2O3(%)min	37	50	60	68
Fe2O3(%)max	1.0	1.0	0.7	0.5
SiO2(%)max	45	43	36	29
Safty Application Temp.(°C)max	1260	1430	1540	1650
Bulk Density(g/cm3)	0.5	0.8	0.95	1.05
Bending strength(Mpa)min	0.7	1.1	1.6	2.0
Crush strength(Mpa)min	1.0	2.0	2.3	2.7
RLC(%)max	1230°C×24h 0.3	1400°C×24h 0.4	1510°C×24h 0.5	1600°C×24h 0.6
Reversible thermal expansion at1090°C(%) max	0.5	0.6	0.8	0.8
Thermal conductivity (w/m.k)max 400°C 600°C 800°C 1000°C	0.15 0.17 0.19 0.24	0.28 0.31 0.33 0.35	0.33 0.36 0.39 0.42	0.41 0.43 0.45 0.48

Q:Can insulating fire bricks be used in aluminum smelting furnaces?: Yes, insulating fire bricks can be used in aluminum smelting furnaces. These bricks have high insulating properties and can withstand the high temperatures required for aluminum smelting. They help to maintain the heat within the furnace, improve energy efficiency, and reduce heat loss, making them suitable for use in such furnaces.

Q:Can insulating fire bricks be used in the construction of steel production furnaces?: Certainly, insulating fire bricks have the capability to be employed in the construction of steel production furnaces. These bricks have been specifically engineered to endure extreme temperatures and offer exceptional thermal insulation, rendering them suitable for a wide range of industrial applications, including steel production. They are manufactured using lightweight materials with low thermal conductivity, enabling them to effectively minimize heat loss and enhance energy efficiency within furnaces. Furthermore, these bricks exhibit remarkable resistance to thermal shock, a crucial property for steel production processes involving rapid heating and cooling. In summary, utilizing insulating fire bricks in the construction of steel production furnaces can optimize performance, reduce energy consumption, and enhance the overall efficiency of the steelmaking process.

Q:Can insulating fire bricks be used in the construction of lime calciners?: Indeed, the utilization of insulating fire bricks is feasible when constructing lime calciners. Lime calciners necessitate elevated temperatures for lime production, and insulating fire bricks are specifically engineered to endure and preserve heat. These bricks possess a reduced thermal conductivity, which effectively insulates the calciner and impedes heat dissipation. Furthermore, insulating fire bricks are lightweight, facilitating their handling and installation during the lime calciners' construction process.

Q:Difference between inorganic insulation material and organic thermal insulation material: Manufacturing distinction:1, organic insulation materials mainly from petroleum products, including foam polystyrene board (EPS), extruded polystyrene board (XPS), spray polyurethane (SPU) and polystyrene particles. From a nationwide perspective, the organic exterior wall insulation system occupies more than 75% of the current external thermal insulation Market in our country.2, inorganic heat preservation material including expanded perlite, hollow glass beads, rock wool, mineral wool, perlite, glass wool and lightweight block self insulation system, mainly based on inorganic materials such as stone, glass, industrial waste and so on. As the state attaches importance to and requirements of the fire protection safety standards for wall materials, the market share of inorganic thermal insulation materials will be greatly improved.

Q:Can insulating fire bricks be used in ceramic industry kilns?: Yes, insulating fire bricks can be used in ceramic industry kilns. Insulating fire bricks are specifically designed to withstand high temperatures and are capable of providing insulation in kilns. They have low thermal conductivity, which helps to maintain consistent heat distribution within the kiln, resulting in more efficient firing processes. Additionally, insulating fire bricks are lightweight, making them easier to handle and install in kilns. Their ability to retain heat and resist thermal shock makes them an ideal choice for use in ceramic industry kilns.

Q:Do insulating fire bricks have a high electrical resistivity?: Yes, insulating fire bricks generally have a high electrical resistivity. This is because these bricks are specifically designed to have low thermal conductivity and high thermal resistance, which also translates into high electrical resistivity. The insulating materials used in these bricks, such as alumina, silica, and other refractory materials, have inherently high electrical resistivity. Additionally, the manufacturing processes often involve the addition of insulating additives, further enhancing the electrical resistivity of the fire bricks. As a result, insulating fire bricks are effective in reducing heat transfer and maintaining high temperatures in various industrial applications, such as kilns, furnaces, and thermal insulation systems.

Q:Are insulating fire bricks resistant to thermal expansion or contraction?: Yes, insulating fire bricks are resistant to thermal expansion and contraction. These bricks are made of materials that have low thermal conductivity, allowing them to withstand high temperatures without undergoing significant expansion or contraction. This property makes them ideal for applications where thermal stability and insulation are required, such as in kilns, furnaces, and other high-temperature environments.

Q:What are the main uses of insulating fire bricks?: Insulating fire bricks are primarily used in high-temperature applications where thermal insulation is required. They are commonly used in fireplaces, kilns, furnaces, and other industrial equipment to minimize heat loss, increase energy efficiency, and provide protection against extreme temperatures.

Q:Can insulating fire bricks be used in the construction of industrial dryers?: Industrial dryers can utilize insulating fire bricks, which are specifically designed to have low thermal conductivity. This allows them to retain heat and prevent heat loss, making them an ideal option for applications that require high temperatures. These fire bricks are created using lightweight materials like clay, silica, and alumina, and can withstand temperatures of up to 3000°F (1650°C). They possess exceptional insulation properties, leading to reduced energy consumption and improved efficiency for the industrial dryer. Moreover, insulating fire bricks are highly resistant to thermal shock, meaning they can endure sudden temperature changes without cracking or breaking. This quality is particularly crucial in industrial dryer settings where temperature fluctuations can occur rapidly. In conclusion, insulating fire bricks are a suitable choice for constructing industrial dryers due to their low thermal conductivity, resistance to high temperatures, and ability to withstand thermal shock.

Q:Can insulating fire bricks be used as insulation in walls and roofs?: Yes, insulating fire bricks can be used as insulation in walls and roofs. Insulating fire bricks are made from lightweight materials that have excellent thermal insulation properties. They have low thermal conductivity, which means they can effectively reduce heat transfer through walls and roofs. This makes them a suitable choice for insulating buildings and improving energy efficiency. Additionally, insulating fire bricks are durable and fire-resistant, making them a safe option for insulation. However, it is important to note that insulating fire bricks are typically used in high-temperature applications such as furnaces and kilns, so they may not be the most cost-effective or practical choice for all wall and roof insulation needs. Other insulation materials designed specifically for building applications may be more suitable in terms of cost, ease of installation, and overall performance.

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