A molten metal furnace capable of preventing or suppressing the molten metal leakage and controlling the leakage direction. A molten metal furnace including an outer wall in an outer peripheral portion and a molten metal storage part holding a molten metal, in which a plurality of lining material layers are arranged on an inner wall of the molten metal furnace forming the molten metal storage part; of the lining material layers, a first lining layer constituting a surface in contact with the molten metal is made of a refractory material; and a sealing material is provided on at least one boundary between the first lining layer and the outer wall.

A molten metal furnace capable of preventing or suppressing the molten metal leakage and controlling the leakage direction. A molten metal furnace including an outer wall in an outer peripheral portion and a molten metal storage part holding a molten metal, in which a plurality of lining material layers are arranged on an inner wall of the molten metal furnace forming the molten metal storage part; of the lining material layers, a first lining layer constituting a surface in contact with the molten metal is made of a refractory material; and a sealing material is provided on at least one boundary between the first lining layer and the outer wall.

A porous refractory cast material contains a closed refractory aggregate fraction having a minimum particle size and a maximum particle size; the ratio of maximum particle size to minimum particle size is 10:1 or less. This closed refractory aggregate fraction comprises all of the porous refractory cast material having a particle diameter greater than 0.1 mm. The porous refractory cast material also contains a binder phase containing refractory selected from calcium aluminate cement, alumina phosphate, hydratable alumina, colloidal silica and combinations thereof. Also disclosed is a metallurgical vessel with an interior lining incorporating the porous refractory cast material.

A method of containing molten aluminum using non-wetting materials comprising depositing MgAl.sub.2O.sub.4, or one selected from an oxide, Al.sub.2O.sub.3, nitride, AlN, BN, carbide, and SiC, onto a crucible. An apparatus for containment of molten aluminum using non-wetting materials comprising a layer of MgAl.sub.2O.sub.4, or one selected from an oxide, Al.sub.2O.sub.3, nitride, AlN, BN, carbide, and SiC, deposited onto a crucible.

A method of containing molten aluminum using non-wetting materials comprising depositing MgAl.sub.2O.sub.4, or one selected from an oxide, Al.sub.2O.sub.3, nitride, AlN, BN, carbide, and SiC, onto a crucible. An apparatus for containment of molten aluminum using non-wetting materials comprising a layer of MgAl.sub.2O.sub.4, or one selected from an oxide, Al.sub.2O.sub.3, nitride, AlN, BN, carbide, and SiC, deposited onto a crucible.

In a metallurgical vessel used for handling molten metal, a preformed refractory component forms part of a refractory structure that covers the bottom wall and side wall of the metallurgical vessel. The preformed refractory component is generally cup-shaped and formed of high-temperature refractory materials.

In a metallurgical vessel used for handling molten metal, a preformed refractory component forms part of a refractory structure that covers the bottom wall and side wall of the metallurgical vessel. The preformed refractory component is generally cup-shaped and formed of high-temperature refractory materials.

A melting and holding furnace includes a main body and a material input mechanism supplying a molten metal to the body which includes a melting chamber; a molten metal receiving chamber; a pumping-out chamber; and a molten metal heating mechanism. The input mechanism includes a molten-metal surface level sensor to detect that the surface height position of the metal in the pumping-out chamber has reached a lower limit that is set to be above the lower surface height position of a lid of the melting chamber, and is set to supply the receiving chamber with the metal and/or the metal block when the sensor detects that the surface height position of the metal in the pumping-out chamber has reached the lower limit so that the surface height position of the metal in the pumping-out chamber is always kept above the lower surface height position of the lid.

A refractory ring structure for forming a section of an inner wall or liner of a metallurgical vessel is provided. The refractory ring structure comprises a continuous top surface; a continuous bottom surface; a continuous arcuate inner surface extending from the top surface to the bottom surface and defining a cavity; a continuous arcuate outer surface opposite the inner surface and extending between the top surface and the bottom surface; and a continuous protrusion or a plurality of protrusions extending from the inner surface for lifting the ring structure. The refractory ring structure comprises a heat resistant, refractory material suitable for use in the inner wall of a metallurgical vessel. Also provided herein are a metallurgical vessel comprising a refractory ring structure as disclosed herein, and a method for providing or replacing all or a section of a refractory inner wall or liner of a metallurgical vessel.

A refractory ring structure for forming a section of an inner wall or liner of a metallurgical vessel is provided. The refractory ring structure comprises a continuous top surface; a continuous bottom surface; a continuous arcuate inner surface extending from the top surface to the bottom surface and defining a cavity; a continuous arcuate outer surface opposite the inner surface and extending between the top surface and the bottom surface; and a continuous protrusion or a plurality of protrusions extending from the inner surface for lifting the ring structure. The refractory ring structure comprises a heat resistant, refractory material suitable for use in the inner wall of a metallurgical vessel. Also provided herein are a metallurgical vessel comprising a refractory ring structure as disclosed herein, and a method for providing or replacing all or a section of a refractory inner wall or liner of a metallurgical vessel.