What is the difference between ceramic fiber insulation bulk and rock wool?

Both ceramic fiber insulation bulk and rock wool have high temperature resistance and can be used as refractory insulation material in single crystal furnace, metallurgical casting, petroleum cracking and space technology. They can be used as sound absorbing materials and heat insulation materials for buildings and equipment. Then what is the difference between the two?

1. Production process.

Ceramic fiber insulation bulk is produced by melting high-purity clay clinker, alumina powder, silica powder, chrome sand and other raw materials at high temperature in an industrial electric furnace to form a fluid. Then, the fluid is blown by compressed air or spun by centrifuge into fiber shape. And the fiber is collected through a fiber collector to form ceramic fiber insulation bulk.The fiber bulk can be further processed into fiber blankets, boards, paper, cloth, rope and other products. Ceramic fiber is a kind of high-efficiency thermal insulation material, which has the characteristics of light weight, high strength, oxidation resistance, low thermal conductivity, good flexibility, corrosion resistance, small heat capacity and sound insulation, etc.

Rock wool is an inorganic fiber made of natural rocks such as basalt, gabbro, dolomite, iron ore, bauxite, etc., which are melted at high temperature and fibrillated. The fiber can be processed into various products such as rock wool board, pipe, felt, belt, etc. It can be used for insulation, fire prevention, sound absorption and earthquake resistance of construction and industrial equipment, pipelines and kiln.

2. Performance difference

Ceramic fiber insulation bulk has advantages in terms of long service life and high fiber toughness. The thermal conductivity of eramic fiber insulation bulk is lower. In addition, the working temperature of ceramic fiber insulation bulk is above 1000 degrees, and the commonly used types are 1050 and 1260. The working temperature of rock wool is about 600 degrees.

3. Application difference

Ceramic fiber insulation bulk can be used at 200 degrees low temperature insulation or 500 degrees medium temperature insulation, and can also do 1000 degree refractory insulation, while rock wool is generally used for insulation of about 500 degrees, mostly used for insulation of heat pipes or electric equipment etc.