The Light Heat Insulating Refractories

The Light Heat Insulating Refractories

The light - heat insulating refractories - the true porosity - is not less than 45% of the castable refractories, also known as light refractory casting.It includes refractory castings, foam refractory castings and gas refractory castings, etc. In practical application, it is mainly used in light aggregate refractory castings.Because it is: small volume density, low thermal conductivity, can reduce weight of equipment, heat preservation performance is good, the furnace temperature uniformity, save energy and refractory with high intensity, the overall performance is strong, spalling resistance performance is good, service life is long, can produce all kinds of shapes or any repair monolithic lining.Simple construction and low cost.Now widely used in metallurgy, machinery, electric power, chemical industry, oil and other industries of industrial furnace and thermal equipment, more than 20 percent energy efficiency than the general refractory materials.

Classification of insulation refractories

According to the method of production, the variety of combination and light aggregate are divided into three categories.According to the method of production, it is mainly divided into the use of light aggregate to make insulating refractories and the method of foaming or adding gas.According to classification, bond type and common refractory castable, same as lightweight aggregate varieties can be divided into the expanded perlite, expanded vermiculite, ceramsite sand, porous clay clinker, light brick, alumina hollow ball and so on heat insulation refractory castable.In the practical application divided by a single light aggregate ingredient, several kinds of light aggregate composition are often used to make a heat insulating refractory casting material.