Refractory fiber products began to be used in the thermal insulation layer of industrial furnaces in the iron and steel industry, and then gradually developed and applied in the industrial lining of heat treatment furnaces. Designed by the second Institute of the Ministry of machinery.

The large annealing furnace of Shanghai Boiler plant began to use full refractory fiber composite lining in China, and won the China Science and technology progress award.

Ladle baking cover is a set of baking device with mobile lifting and combustion system. Before the molten steel is discharged from the furnace, the ladle powder is baked to 1000 ℃, and the ladle roaster sometimes works intermittently and continuously, so the baking cover should be

Refractory fiber structure with low heat storage and fast heating rate.

The thermal insulation of the permanent layer, from clay brick to high alumina brick to low cement or high alumina castables currently used, has high thermal conductivity and high temperature of the outer wall of the ladle. At present, Anshan Iron and steel ladle has realized full cover insulation.

And on-line baking, the heat dissipation in the ladle is mainly through the tank wall. According to the heat transfer theory, the total heat transfer effect of the whole tank wall depends on the thermal conductivity of its insulation material, and the insulation material with low thermal conductivity shall be reasonably selected.

The insulation effect of ladle can be greatly improved without increasing or even decreasing the thickness of ladle wall.