Method and apparatus for forming a refractory lining in a coreless furnace

A carrier adapted for the formation of a refractory lining of uniform thickness on the interior of a furnace, with the use of a lining form having a cylindrical side wall and a closed bottom and providing, when concentrically supported within the furnace, a uniform space between its exterior surface and the interior surface of the furnace, said carrier comprising:

• a lifting structure adapted for concentric location on and attachment to the top of the lining form and having engaging and locating means adapted for engagement with the furnace and for location of the lining form, when attached, concentrically within the furnace, said carrier further having a conical upper surface with the outside diameter of its lowest edge being substantially equal to the outside diameter of the lining form,
• said lining form and carrier having complementary mating means for fastening said carrier to said lining form,
• wherein the placement of at least part of said lining form within said furnace with said engaging and locating means of the carrier engaged with the furnace locates said lining form concentrically within the furnace to provide a uniform space between the lining form and the surface, and wherein particulate refractory material poured onto the conical upper surface is directed into the concentric space.

A fixture for retaining a lining form concentric within the furnace during compaction of refractory materials, comprising

• a pair of locking means for installation in a pair of alignment holes formed in the furnace,
• a holding bar adapted to be fastened to attachment means formed inside the top of the lining form, and
• a main bar carrying engagement and holding means for engaging the locking means of the furnace when installed on the furnace, and locking mechanisms for clamping to the holding bar, whereby the main bar and the holding bar, when connected together and to the furnace, provide a rigid structure to hold the lining form concentric within the furnace.

A carrier for a lining form adapted to form a refractory lining of uniform thickness at the interior furnace walls, with the use of a lining form having a cylindrical side wall and a closed bottom and providing, when concentrically supported within a furnace, a uniform space between its exterior surface and the interior surface of the furnace, said carrier comprising

• a lifting structure adapted for concentric location on and attachment to the top of the lining form and having engaging and locating means adapted for engagement with the furnace and for location of the lining form, when attached, concentrically within the furnace,
• said lining form and carrier having complementary mating means for fastening said carrier to said lining form,
• wherein the placement of at least part of said lining form within said furnace with said engaging and locating means of the carrier engaged with the furnace locates said lining form concentrically within the furnace to provide a uniform space between the lining form and the surface.