Jul302024 by adminrs

Critical Aspects of Refractory Material Raw Materials in High-Temperature Applications

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Refractory materials are essential in high-temperature processes in metallurgy, construction, and chemical industries. Their performance and quality are closely related to their raw materials. This article explores the roles of these raw materials, including providing high-temperature resistance, enhancing structural strength, and influencing wear resistance. 1. Providing High-Temperature Resistance: Ensuring Process Stability One of the primary functions of refractory materials is to offer high-temperature resistance, maintaining structural stability under extreme heat. Key raw materials like alumina, magnesia, and calcium oxide have…
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Jul302024 by adminrs

Advantages and Disadvantages of Corundum and Its Applications

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Advantages: High Hardness: Corundum is one of the hardest natural minerals, second only to diamond. This gives it excellent wear resistance, making it durable against high-intensity abrasion and scratching. High-Temperature Stability: Corundum remains stable at high temperatures and can withstand thermal shock, making it ideal for high-temperature processes and equipment in industries such as refining, ceramics, and electronics. Chemical Stability: Corundum is resistant to corrosion from acids and bases, making it suitable for the chemical and metallurgical industries. High Insulation:…
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Jul292024 by adminrs
The Role and Wide Applications of Bauxite

The Role and Wide Applications of Bauxite

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Bauxite is an important ore resource containing multiple hydroxide aluminum minerals, such as diaspore, boehmite, and gibbsite. It primarily consists of alumina, iron oxide, and silica, with unique mineralogical properties and crystal structures, making it valuable in various fields. Properties and Characteristics of Bauxite Bauxite has the following key characteristics: Chemical Composition: Bauxite typically contains 30%-60% alumina, along with certain amounts of iron oxide and silica. Crystal Structure: The main mineral components of bauxite have different crystal structures, such as…
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Jul292024 by adminrs
Selecting The Right Refractory Materials For Optimal Performance

Selecting The Right Refractory Materials For Optimal Performance

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Choosing the right refractory materials is crucial for ensuring the longevity and efficiency of industrial furnaces, kilns, and other high-temperature equipment. The selection process can be complex, requiring an understanding of the specific conditions and requirements of each application. This guide will help you navigate through the key factors to consider when selecting the appropriate refractory materials. 1. Understanding the Application Requirements Each industrial application has unique requirements based on the operating conditions. Key factors to consider include: Operating Temperature:…
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Jul192023 by adminrs
Application of Magnesia-Carbon Bricks in the Steel Metallurgy Industry

Application of Magnesia-Carbon Bricks in the Steel Metallurgy Industry

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Magnesia-Carbon bricks are highly suitable for the requirements of steel metallurgy due to their superior high-temperature resistance, resistance to slag erosion, and excellent thermal shock stability. Leveraging the high refractory properties, excellent slag resistance, and solubility resistance of carbon materials and the low creep at high temperatures of magnesia, these bricks find applications in severely eroded slag lines and steel teeming nozzles. Thus far, the extensive use of magnesia-carbon bricks in the steelmaking process, coupled with process improvements in iron…
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Jul192023 by adminrs

The Main Function of The Heating Furnace Lining Refractory Material

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The main function of the heating furnace is to heat the billets (small square billets, large square billets, slab billets, steel ingots) to 1000-1250℃ (rolling temperature) until they have sufficient plasticity to be rolled into the required section, size, or shape through a hot rolling mill. The required rolling temperature varies depending on the material's chemical composition and grade. Based on the metallurgical properties of the raw materials and productivity, the heating furnace's heating rate must also meet specific requirements…
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Jul182023 by adminrs
Mullite Bricks Used For Hot Air Ducts

Mullite Bricks Used For Hot Air Ducts

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Mullite bricks used for hot air ducts are refractory products primarily composed of mullite as the main crystal phase. They are made by using mullite as the main raw material, along with refractory clay, kaolin, zircon sand, and additives. The production process involves mixing, shaping, drying, and high-temperature firing to obtain mullite refractory bricks. 1.Why are mullite bricks used for hot air ducts? The typical lining structure of a hot air duct includes refractory spray coating, refractory fibers, lightweight insulation…
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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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