REFRACTORY HEAT INSULATING BLOCK Russian patent published in 2015 - IPC F27D1/00 

FIELD: metallurgy.

SUBSTANCE: refractory heat insulating block contains four-layer package having rectangular shape. The package contains layers arranged in sequence, from them the first layer is outside one looking to the furnace centre upon the block installation on furnace wall, it is made out of the materials with apparent density 290÷500 kg/m³, second and third layers are middle ones, the forth layer in internal looking on the furnace wall upon the block installation on this wall, at that specified layers are made out of the material with apparent density 290÷400 kg/m³. The layers are refractory heat insulating plates, glued to each other using the high-temperature adhesive. On the outside surface of the forth layer the metal washers with holes are installed. The washers are secured to the forth layer of the package by the metal clamps located in this layer. In the package the through holes co-axial to the specified washers are made. At that hole diameter exceeds the washer hole diameter.

EFFECT: increased wear resistance of the block and decreased its thickness upon keeping of its heat insulating properties, as well as simplified design and installation.

2 cl, 1 dwg