Abstract: A system for insulating the walls of furnaces and other heated structures with ceramic fiber insulation including an improved insulation anchor. The anchor includes a pin which is attached to the furnace wall such as by stud welding with the pin having an elongated aperture at its outer end. A retaining rod extends through the aperture and into the adjacent ceramic fiber modules. The rectangular shaped rod includes an improved means for locking the rod in the aperture which comprises a crimp at about the midpoint of the rod. This provides a narrow section of the rod which permits the rod to be turned in the aperture and locked. The crimp method of forming the narrow section does not remove any metal from the rod and does not weaken the rod.

Abstract: A flexible cover for a carbon bake pit has a flexible, expanded metal backing to which is attached a blanket of insulating ceramic fibers. This construction allows the cover to flex in order to conform to the surface of the material in the pit. Lifting means are attached to the expanded metal backing in a manner so as to permit this flexibility.

Abstract: An anchor assembly for supporting an insulation panel or blanket on furnace walls which includes an extension member adapted to be fastened to an existing anchor member in order to extend the length of the anchor assembly to accommodate insulation of greater thickness. The extension member has attaching means which engage notches in the existing anchor to hold to extension in position. Different species of the attaching means are disclosed.