THERMAL INSULATION OF SKID PIPES Russian patent published in 2009 - IPC F27B3/10 

FIELD: heating, insulation.

SUBSTANCE: invention relates to metallurgical industry and particularly to the thermal insulation design for skid pipes in rolling mill heat-treating furnaces. Apart from fire-proof and heat-insulating layers, the refractory lining include water proof packing preventing moisture penetration from fire-proof layer to heat-insulating layer. The thickness of heat-insulating layer is 0.15-0.30 from the total insulation thickness, whereas welded anchor length is 0.45-0.60 from the total insulation thickness.

EFFECT: reduction of heat losses in skid pipes and improvement of strength insulation properties.