Refractory ceramic fibers Fiber characteristics
· Abstract. Refractory ceramic fibers (RCFs) are amorphous fibers that belong to a class of materials termed synthetic vitreous fibers (SVFs) also called man-made mineral fibers (MMMFs) which includes alkaline earth silicate wool glass wool rock (stone) wool slag wool and special-purpose glass fibers. RCFs are more durable and biopersistent
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· Refractory ceramic fibres (RCFs) belong to a class of fibres called man-made vitreous fibres which are primarily valued for their insulating qualities. 1 Raw refractory ceramic fibres are white or gray fibrous materials supplied in bulk fibre blanket form or contained in a solid product. 2
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· 2 Refractory ceramic fibre (RCF) as used for insulation particularly in kilns and furnaces is a form of man-made vitreous (silicate) fibre (MMVF) and consists of alumino-silicate fibres which can cause irritation of the skin eyes and upper respiratory tract many being fine enough to be inhaled and deposited in the lungs.
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· Ceramic fibers comprise a wide range of amorphous or crystalline synthetic mineral fibers characterized by their refractory properties (i.e. stability at high temperatures) (IARC 1988). They typically are made of alumina silica and other metal oxides or less commonly of nonoxide materials such as silicon carbide. Most ceramic fibers are composed of alumina and silica in an approximate 50/50 mix-ture. By definition monoxide ceramics such as alumina and zirco-nia are composed of at least 80 of one oxide they generally contain 90 or more of the base oxide and specialty products may contain virtually 100 . Nonoxide specialty ceramic fibers such as silicon carbide silicon nitride and boron nitride also have been produced. Because there are several types of ceramic fibers such fibers exhibit a range of chemical and physical properties. Most ceramic fibers
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Both lightweight and durable Nextel ceramic fibers and textiles are designed to meet today s most demanding thermal mechanical and electrical performance requirements. Made of continuous ceramic oxide fibers Nextel products are available in a variety of forms including chopped fibers sewing threads braided sleevings and woven fabrics.
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· RefractoriesAn Overview. Refractories are ceramic materials capable of withstanding high temperatures. The bulk of refractory materials consist of single or mixed high melting point oxides such as silicon aluminum magnesium calcium and zirconium. Non-oxide refractories also exist and include materials such as carbides nitrides borides
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· Refractory ceramic fibers (RCFs) as the main substitute for asbestos are widely used because of their high temperature resistance and good thermal insulation. In the air of its production and use places RCFs are inhalable fibers that are easy to deposit in the lungs.
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Ceramic fibers are mostly used as refractory fibers in uses over 1000 °C and are characterized by a polycrystalline structure rather than amorphous. Refractory ceramic fibers are mostly used for thermal insulation at high temperatures and to make special composites.
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· Ceramic Fibre is a man-made synthetic fiber produced fromsmall-dimension filament composed of high purity aluminosilicate materials. It also known as Ceramic Wool or "refractory material". Cause it has a heat-resistant property white and odourless substance.
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· RefractoriesAn Overview. Refractories are ceramic materials capable of withstanding high temperatures. The bulk of refractory materials consist of single or mixed high melting point oxides such as silicon aluminum magnesium calcium and zirconium. Non-oxide refractories also exist and include materials such as carbides nitrides borides
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Ceramic fiber lining low thermal conductivity of ceramic fiber lining in the average temperature of 400 degrees the thermal conductivity is less than 0.1w/mk the average 600 degrees less than 0.l5 w/mk average 1000 degrees less than 0.25w/mk about l/8 as a lightweight clay brick lightweight refractory lining l/10 adiabatic effect.The
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Refractory Ceramic Fiber as a kind of fiber light-weight refractory insulation materials has excellent properties of high heat resistance good heat stability low thermal conductivity low specific heat mechanical shock resistance and etc. Refractory Ceramic Fiber insulation refractory is widely used in industries of petrochemical steel and non-ferrous metals chemical processing ceramics
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· THERMAL CERAMICS SOLUTIONS 7 Refractory Ceramic Fibre (RCF) RCF also known as Alumino-Silicate Wools is a highly versatile material which can be spun or blown into bulk and air-laidinto blanket folded into modules converted into papers boards and shapes.
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· Refractory ceramic fibers (RCFs) as the main substitute for asbestos are widely used because of their high temperature resistance and good thermal insulation. In the air of its production and use places RCFs are inhalable fibers that are easy to deposit in the lungs.
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Ceramic fiber lining low thermal conductivity of ceramic fiber lining in the average temperature of 400 degrees the thermal conductivity is less than 0.1w/mk the average 600 degrees less than 0.l5 w/mk average 1000 degrees less than 0.25w/mk about l/8 as a lightweight clay brick lightweight refractory lining l/10 adiabatic effect.The
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· 1.2 What are Refractory Ceramic Fibres and High Biopersistence Fibres RCF are a sub-category of man-made vitreous fibres (MMVF) manufactured for high temperature high performance thermal insulation applications and used mostly to line furnaces kilns and other industrial heaters. They are also used as an insulation medium or thermal barrier
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· In the petrochemical world refractory ceramic fiber (RCF) — also known as aluminosilicate wool (ASW) — has long ruled as the material for lining fired heaters. It is not hard to understand why The material possesses several attributes that ensure it performs well in the harsh environment. They include A low thermal conductivity and heat capacity.
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Advanced ceramic materials play an increasingly important role in the high-tech industry traditional industry transformation and national defense and military industry due to their excellent high-temperature mechanical properties and their unique composite effects of
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· Refractory ceramic fibers are synthetic fibers produced by the melting and blowing or spinning of calcined kaolin clay or a combination of alumina (Al2O 3) silicon dioxide (SiO 2) or other oxides usually in a 50 50 weight ratio.
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· Objectives. The objectives of the 2013 agreement were to maintain the maximum allowable fenceline concentration for refractory ceramic fibres in ambient air maintain reporting requirements for refractory ceramic fibres promote inspection and maintenance of pollution control equipment and confirm the commitment of the refractory ceramic fibres industry to maintain a product stewardship
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· • Refractory Ceramic Fiber (RCF) materials are a common insulation type utilized in the thermal process industries for over 50 years. • Increasing concerns over the health effects relating to RCF have caused players in the ceramic fiber industry to develop alternative fibre products as well as to work with existing process
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· In the petrochemical world refractory ceramic fiber (RCF) — also known as aluminosilicate wool (ASW) — has long ruled as the material for lining fired heaters. It is not hard to understand why The material possesses several attributes that ensure it performs well in the harsh environment. They include A low thermal conductivity and heat capacity.
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· Refractory ceramic fiber has been developed for industrial processes requiring materials with high thermal and mechanical stability. To evaluate the biological activity of this fiber rat alveolar macrophages were exposed for < or = 24 h to 0-1 000 micrograms/ml of refractory ceramic fiber crocidolite asbestos silica (fibrogenic particles) or titanium dioxide (a nonfibrogenic particle) and
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Refractory Ceramic Fiber as a kind of fiber light-weight refractory insulation materials has excellent properties of high heat resistance good heat stability low thermal conductivity low specific heat mechanical shock resistance and etc. Refractory Ceramic Fiber insulation refractory is widely used in industries of petrochemical steel and non-ferrous metals chemical processing ceramics
Get PriceReplacing Refractory Ceramic Fiber Linings
· In the petrochemical world refractory ceramic fiber (RCF) — also known as aluminosilicate wool (ASW) — has long ruled as the material for lining fired heaters. It is not hard to understand why The material possesses several attributes that ensure it performs well in the harsh environment. They include A low thermal conductivity and heat capacity.
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Refractory ceramic fibers are mostly used for thermal insulation at high temperatures and to make special composites. They are very expensive fibers because only a small quantity is produced and they are used in particular fields such as aerospace 84–86 .
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· 2. MANAGING REFRACTORY CERAMIC FIBRES AND HIGH BIOPERSISTENCE FIBRES HEALTH AND SAFETY RISKS 5 2.1 Identifying the hazards 5 2.2 Assessing the risks 5 2.3 Controlling the risks 6 2.4 Information training instruction and supervision 9 2.5 Reviewing control measures 10 3. REMOVING REFRACTORY CERAMIC FIBRES FROM PLANT OR STRUCTURES 11 4.
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· 2. MANAGING REFRACTORY CERAMIC FIBRES AND HIGH BIOPERSISTENCE FIBRES HEALTH AND SAFETY RISKS 5 2.1 Identifying the hazards 5 2.2 Assessing the risks 5 2.3 Controlling the risks 6 2.4 Information training instruction and supervision 9 2.5 Reviewing control measures 10 3. REMOVING REFRACTORY CERAMIC FIBRES FROM PLANT OR STRUCTURES 11 4.
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