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Refractories are materials that decompose by heat, pressure or chemical erosion

Refractories are materials that decompose by heat, pressure or chemical erosion

Refractories are materials that decompose by heat, pressure or chemical erosion and are retained at high strength and form temperatures. Refractories are polycrystalline, polyphase, inorganic, nonmetallic, porous and heterogeneous. They are usually composed of oxides or non-oxides (such as carbides, nitrides, etc.) of the following materials: silicon, aluminum, magnesium, calcium, and zirconium. Some metals with melting points > 1850°C, such as niobium, chromium, zirconium, tungsten, tantalum, etc., are also considered refractory materials.

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2023-01-03

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Refractories must be chemically and physically stable at high temperatures

Refractories must be chemically and physically stable at high temperatures

Refractories must be chemically and physically stable at high temperatures. Depending on the operating environment, they must be resistant to thermal shock, chemically inert and/or have a specific range of thermal conductivity and coefficient of thermal expansion.

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2023-01-03

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Refractories can be used for

Refractories can be used for

Used as a thermal barrier between the thermal medium and the containment vessel wall

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2023-01-03

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Refractories have a variety of useful applications

Refractories have a variety of useful applications

Refractories have a variety of useful applications. In the metallurgical industry, refractory materials are used to line furnaces, kilns, reactors, and other vessels that hold and transport hot media, such as metals and slag. Refractories also have other high temperature applications, such as combustion heaters, hydrogen reformer, ammonia primary and secondary reformer, cracking furnaces, utility boilers, catalytic cracking units, air heaters and sulfur furnaces.

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2023-01-03

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All the materials that have barrier properties to sand and dust and have certain abrasion resistance can be used as dustproof packaging materials

All the materials that have barrier properties to sand and dust and have certain abrasion resistance can be used as dustproof packaging materials

All the materials that have barrier properties to sand and dust and have certain abrasion resistance can be used as dustproof packaging materials, such as various papers and paperboards, various plastics, wood, ceramics, glass and metal. All kinds of paper and soft plastic film can be used to cover the product dust, and at the same time play the role of individual or internal packaging of the product; All kinds of cardboard, corrugated board, wood, plywood, bamboo plywood, ceramics, glass and metal, hard materials, magnesite concrete board, etc., can be used to make packaging containers containing products to protect products from the influence of external dust.

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2023-01-03

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Steelmaking material

Steelmaking material

steel making refers to controlling the carbon content (generally less than 2%), eliminating harmful elements such as P, S, O, and N, retaining or increasing beneficial elements such as Si, Mn, Ni, and Cr, and adjusting the proportion between elements to obtain the best performance.

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2023-01-03

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