Jul182023 by adminrs
High Alumina Refractory Bricks for Coke Ovens

High Alumina Refractory Bricks for Coke Ovens

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High alumina bricks are a common type of refractory brick, mainly referring to silica-alumina refractory materials with an Al2O3 content of over 48%. They are used in metallurgical kilns, building material kilns, and other thermal equipment. High alumina refractory bricks are typically used in the carbonization chamber of coke ovens. 一.The areas where high alumina bricks are used for coke oven construction include: The furnace heads at both ends of the carbonization chamber. The carbonization chamber of a coke oven…
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Jul142023 by adminrs
What Are The Requirements For Special-shaped Refractory Bricks

What Are The Requirements For Special-shaped Refractory Bricks

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High refractoriness: The heating temperatures in modern metallurgical and industrial kilns typically range from 1000 to 1800°C. Shaped refractory bricks should have the ability to resist dissolution under these harsh conditions. Thermal structural strength: Shaped refractory bricks should not only have a high dissolution temperature but also maintain their shape and resist softening deformation and collapse when subjected to the load of furnace walls or other mechanical stresses. Thermal stability: Due to temperature fluctuations during the operation of metallurgical and…
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Jul142023 by adminrs

Performance of Refractory Castables

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The binder for mullite and refractory castables is a composite binder, mainly composed of α-Al2O3 and SiO2 fine powder, clay, and hydrated alumina. It is a combination of fine powders and hydrated alumina that bond at low temperatures. At medium to high temperatures, Al2O3 reacts with SiO2 to form mullite, creating a binding material, hence referred to as the binder for mullite and refractory castables. It is well known that using secondary mullite in amorphous refractories is a common technique…
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Jul122023 by adminrs
Applications and Materials of Corundum Mullite Bricks

Applications and Materials of Corundum Mullite Bricks

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Corundum mullite bricks are refractory insulation materials that primarily consist of α-Al2O3 corundum as the main crystal phase. Due to their high heat resistance, strength, compressive strength, oxidation resistance, corrosion resistance, insulation properties, and good sealing, they have found increasing applications with the advancement of contemporary technology. Approximately 5% of alumina trihydrate (Al(OH)3) is used in the production of refractory insulation materials, while another 5% is utilized in wear-resistant materials, electronic devices, petroleum and chemical plants, ceramics, paper industry, and…
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Jul122023 by adminrs
The Role of Refractory Bricks in High-Temperature Performance of Materials

The Role of Refractory Bricks in High-Temperature Performance of Materials

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Refractory bricks play a significant role in the high-temperature performance of materials. They have high mechanical strength, long service life, excellent chemical stability, no chemical reactions with materials, and can withstand high temperatures up to 1900°C. They are particularly suitable for high-temperature and low-temperature converters, reformers, hydrogenation converters, desulfurization tanks, and methanizers in fertilizer plants. They also play a role in dispersing gases and liquids, supporting, covering, and protecting catalysts. Refractory bricks can be used in the steel industry for…
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Jul112023 by adminrs
Refractory Brick Manufacturers Can Provide Refractory Bricks in Different Shapes

Refractory Brick Manufacturers Can Provide Refractory Bricks in Different Shapes

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Refractory bricks are shaped refractory materials used in industrial kilns. The term originates from refractory materials with specific geometric shapes that often resemble bricks. Since nearly all industrial furnaces operate at high temperatures, refractory bricks must be able to withstand the corrosive effects of heat. That's why they are also referred to as refractory bricks. Refractory bricks are produced through special methods, and manufacturers can create them in any required geometric shape. The bonding between bricks and mortar is crucial,…
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Jul112023 by adminrs
Detailed Explanation of Refractory Materials for Various Industrial Kilns.

Detailed Explanation of Refractory Materials for Various Industrial Kilns.

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What are the classifications of refractory materials for industrial kilns? Generally speaking, they can be divided into four types: refractory materials for glass tank kilns, refractory materials for cement kilns, castables for ceramic kilns, and refractory materials for coke ovens. For specific details, please refer to the following explanation by experts from a refractory material factory in Henan. 1.Refractory Materials for Glass Tank Kilns Considering various factors that lead to the damage of kiln lining, such as chemical erosion, mechanical…
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Jul82023 by adminrs
3 Reasons Why Refractory Bicks Can Resist Fire

3 Reasons Why Refractory Bicks Can Resist Fire

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Refractory bricks are inorganic non-metallic materials with a refractoriness not lower than 1580℃. They serve as fundamental materials for high-temperature technology and are used as structural materials for constructing kilns, furnaces, and other thermal equipment. They are also functional materials used in the manufacturing of certain high-temperature containers, components, or for specialized purposes. In order for refractory bricks to be successfully used under high-temperature conditions, they must possess good organizational structure, thermal properties, mechanical properties, and usability. This means they…
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Jul72023 by adminrs
What kind of castable has a long service life for the kiln mouth of a rotary kiln?

What kind of castable has a long service life for the kiln mouth of a rotary kiln?

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Several years ago, steel fiber corundum castable and high-alumina castable were used for the kiln mouth of the rotary kiln, but the results were not satisfactory. They were prone to cracking and had poor thermal shock resistance, resulting in a short service life and increased costs. Refractory castable is composed of aggregates, powders, binders, additives, water, and other liquid materials. Under high-temperature conditions, it exhibits good sintering performance, volume stability, corrosion resistance, and high-temperature mechanical properties. The refractory lining at…
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Jul72023 by adminrs
Production and Process of Corundum Bricks

Production and Process of Corundum Bricks

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Corundum bricks are refractory products mainly composed of corundum as the primary crystalline phase in the aluminum-silicon system. These bricks possess excellent high-temperature mechanical properties, corrosion resistance, and good abrasion resistance. Raw Materials: Natural hydrated aluminum oxides, including boehmite and diaspore, can be dehydrated through heating to obtain aluminum oxide (γ-Al2O3). This is then further heated to 1450°C, transforming it into corundum (α-Al2O3). However, due to the limited natural reserves of natural corundum and pure boehmite, industrial alumina is predominantly…
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