中文版 |ENGLISH
Henan anbo refractory material co., LTD
Tel:86-0371-64111501
Contact person:manager xu
phone:86-13592608515
address:Gongyi City,HenanProvince,China
knowledge
Location: HOME > knowledge

Heat insulation refractory to pollution-free ceramic fiber development

   

Ceramic fiber is a kind of fibrous lightweight refractory materials, the main chemical composition of aluminum silicate, according to its mineral composition can be divided into glass fiber and more crystalline fibre two kinds big. Glass fiber material is formed by molten liquid flow in the cooling of an amorphous solid fiber; Polycrystalline fiber more colloid injection method is used to (or left) method into fiber, high temperature calcination.

 

 

Ceramic fiber is widely used in all kinds of furnaces of high temperature resistant insulation materials, due to its bulk density is much lower than other refractory material, and heat is small, heat insulation effect is obvious, as lining material can greatly reduce the thermal kiln energy loss, in the aspect of energy saving for furnaces has brought a revolution. On the other hand its application technology and method of thermal furnace masonry also brings about a revolution.

 

1. The present situation of using

Ceramic fiber first appeared in 1941, the bab, Mr Cox company with natural kaolin clay, with electric arc furnace melting injection into fibers. In the late 1940 s, the two companies producing series of aluminium silicate fibre, and applied in the aviation industry for the first time; In the 1960 s, the United States to develop a variety of ceramic fiber products, and used in industrial furnace wall lining. Started production in China in the 1970 s, ceramic fiber used, its application technology in the 1980 s to get rapid promotion, but the main range of applicable temperature under 1000 ℃, simple application technology is relatively backward. After entering the 1990 s, as containing zirconium fiber and the application of polycrystalline alumina fiber, using the temperature to 1000 ℃ ~ 1400 ℃, but due to the backward product quality defects and application technology, application field and application methods are limited. Such as polycrystalline alumina fiber can not be made into fiber blanket, single product specifications, with loose cotton, fiber blocks is given priority to, although is increased with temperature, but the intensity is very poor, limiting the scope of use, and shortened the service life.

 

Containing zirconium fiber is made of melting method to produce a wide range of USES, lower cost of aluminum silicate fiber, can be used as building lots kinds of thermal furnace the heat surface of whole fibers liner, the current domestic products in the quality and application development of this aspect is still relatively backward, now in the overseas chrome fiber, temperature is higher than containing zirconium fiber, domestic haven't this aspect of the report.

 

2. The types and purposes

Ceramic fiber main varieties are: ordinary aluminum silicate fiber, high aluminum silicate fiber, aluminum silicate fiber (Cr2O3, ZrO2), polycrystalline alumina fiber and polycrystalline mullite fiber, etc. Abroad in recent years, has successfully developed or is developing some new types of ceramic fiber, such as magnesium olivine fiber, ceramic fiber (SiO2 - CaO - department of MgO style and Al2O3 - CaO department), etc. Ceramic fiber cotton, blanket, blanket, modules, paper, cloth, tape, rope, etc.

Ceramic fiber blanket (fiber module) : use self fluxing type, even more melt even left made to jilt silk long fiber production technology, the double needle, make the fiber woven directly as the flame surface heat, set fire-resistant, heat insulation, heat preservation at an organic whole, in neutral, oxidative and partial reductive chi points for medium and long-term use, still can maintain good strength and toughness. Made of this fiber carpet fiber module contains no binder, good thermal stability, widely used in petrochemical, metallurgy, electric power and heat preservation heat field.

Ceramic fiber board: the ceramic fiber and binder, additives, after pulping, molding, curing and drying process. Ceramic fiber board good flexibility, easy cutting, high strength, is a kind of low thermal conductivity and low heat storage of the new energy-saving environmental protection products, widely used in various types of heating equipment in areas such as the walls, roof backing, heavy refractory materials.

Ceramic fiber cloth, belt: mainly used in fire doors, industrial furnace and heat insulation, heat insulation of pipes and containers.

Ceramic fiber rope: mainly used in various industrial kilns of the expansion joints, high temperature of the winding insulation, steel structure connection of the pipe insulation, etc.

Ceramic fiber paper: the ceramic fiber and binder, additives, after pulping, molding, drying curing process, is an ideal sealing, thermal insulation material. Can be used for various furnaces dilatation joints, high temperature heat preservation and heat insulation liner etc.

In addition, the ceramic fiber can also be used to filter and catalyst support materials, packing materials and friction material, heat insulation coatings and reinforced material, etc.

 

3. The disadvantages and prospects

 

Although ceramic fiber for high temperature adiabatic refractory plays an important role in the field of industry, but there are a lot of production defects, especially it has can be inhaled, and the human body has certain harm to the environment, some enterprises abroad tightened restrictions on the use of amorphous ceramic fiber. At present, a kind of biological solubility in amorphous ceramic fiber insulating refractory material market, the super fiber (SiO2 - CaO - department of MgO style ceramic fiber) is a pollution-free environmentally friendly materials. Trend of ceramic fiber products in the future production, is in the direction of pollution-free, refinement and muti_function change development, especially in using new technology, new material, the preparation of the functional sex of the high-tech and high value-added fine ceramic fiber, its production rate will be more and more big, zhejiang optimizing refractory insulation materials is of great significance.

Copyright:Henan anbo refractory material co., LTD   Tel:86-0371-64111501   Contact person: Manager Xu   phone:13592608515    address:Gongyi City,HenanProvince,China
Zip:451200  QQ:40999990