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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Jun302023 by adminrs
Refractory Bricks for Cement Rotary Kilns

Refractory Bricks for Cement Rotary Kilns

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The dimensions of refractory bricks for cement rotary kilns are closely related to the lifespan of the kiln lining. The height (h) of refractory bricks for cement rotary kilns determines the thickness of the kiln lining. On one hand, the thickness of the kiln lining affects its weight, which in turn affects the deformation of the kiln body and the mechanical stress on the lining bricks. On the other hand, the thickness of the kiln lining also affects the surface…
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Jun302023 by adminrs
The Concerns of Refractory Brick Buyers Beyond Price

The Concerns of Refractory Brick Buyers Beyond Price

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When purchasing refractory bricks, some buyers often only consider the price of the bricks while neglecting their own usage requirements. This is a mistake because purchasing refractory bricks that do not meet their own requirements will only result in partial effectiveness. Generally, the following principles should be followed: Understanding the characteristics of the furnace or kiln Based on the structure of the furnace or kiln, including the working characteristics and operating conditions of each part, refractory bricks should be selected…
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