Last issue we mainly introduced the building of insulation brick of tunnel kiln wall and the laying of insulation layer. This issue we will introduce the tunnel kiln top insulation of lap joint of hanging refractory plate and straight wall. Please stay tuned.
The construction procedure of the kiln roof thermal insulation project is: pre-laying high-aluminum aluminum silicate fiber needle-punched blanket in the lap joint of refractory hanging plate and the inner straight wall, packing high aluminum-type aluminum silicate acupuncture blanket in V-stitch of refractory hanging plate, 20mm thick lightweight aggregate refractory mud seal layer, laying insulation layer (including the installation and insulation of coal injection pipe and air duct), sealing of the top surface of the kiln.
1.Lap joint of hanging refractory plate and straight wall
Before the refractory hanging plate is suspended, a layer of high-alumina aluminum silicate fiber needle-punching blanket is laid on the top surface of the wall, and the thickness is about one-third of the distance between the top plate and the wall surface, ensuring that refractory hanging plate will not be lifted by kiln wall, when the kiln wall is thermally expanded.
This issue we mainly introduced the lap joint of hanging refractory plate and straight wall of tunnel kiln top insulation. Hope this can bring help to furnace builders. Next issue we will continue to introduce the refractory hanging plate V-stitch packing and lightweight aggregate refractory mud seal. Please stay tuned.