For reduction of heat losses through the furnace roof flat roof made of light-weight material NK-29 is used. With the usage of blocks manufactured from this material all requirements such as: trueness of lining, minimization of heat losses, convenience of installation and replacement are fulfilled.
The main and udeniable advantage of a suspended roof is that it can be conveniently replaced on-the-spot without furnace shutdown. All necessary work includes the removal of an out-of-order block and installation of a new one.
