In production of a reactive metal using a melting furnace for producing metal having a hearth, ingots can be efficiently produced by efficiently cooling the ingots extracted from the mold provided in the melting furnace. In addition, an apparatus structure in which multiple ingots can be produced with high efficiency and high quality from one hearth, is provided. A melting furnace for producing metal is provided, the furnace has a hearth for having molten metal formed by melting raw material, a mold in which the molten metal is poured, an extracting jig which is provided below the mold for extracting ingot cooled and solidified downwardly, a cooling member for cooling the ingot extracted downwardly of the mold, and an outer case for keeping the hearth, the mold, the extracting jig, and the cooling member separated from the air, wherein at least one mold and extracting jig are provided in the outer case, and the cooling member is provided between the outer case and the ingot, or between the multiple ingots.

A method for treating combustible material of the present invention includes providing a pipe opened to a molten substance surface above the molten substance surface of molten substance stored in a furnace body for smelting nonferrous metals, and blowing combustible material containing valuable metals and oxygen-enriched air into the molten substance surface of the molten substance from the pipe.

A method for treating combustible material of the present invention includes providing a pipe opened to a molten substance surface above the molten substance surface of molten substance stored in a furnace body for smelting nonferrous metals, and blowing combustible material containing valuable metals and oxygen-enriched air into the molten substance surface of the molten substance from the pipe.

High productivity plant for the continuous quenching of steel bars which comprises a loading station suitable to dispose a plurality of bars separated and distanced from each other. Such plant also comprises a first treatment line, a quenching machine, a transfer station disposed downstream of the quenching machine, and a second treatment line.

An installation for melting metallic scraps, and particularly adapted for melting aluminium scraps, includes a system for cleaning the metallic scraps, and in particular for cleaning the scraps from organic compounds.

An installation for melting metallic scraps, and particularly adapted for melting aluminium scraps, includes a system for cleaning the metallic scraps, and in particular for cleaning the scraps from organic compounds.

Processes and plants for producing cement clinker, wherein no recirculation of preheater exhaust gases occurs and the ratio of solid fed in to exhaust gas in the preheater is set to greater than 1.0 kg of solid to gas.

A conveyer system for vertically and helically conveying a workpiece includes a main bracket, on which interconnected heating furnace and cooling furnace are arranged in parallel. The heating furnace includes a 1.sup.st spiral supporting plate, a conveyer belt arranged on the 1.sup.st spiral supporting plate along the spiral direction and one or multiple gas inlet/inlets to fill protective gas into the heating furnace. The cooling furnace includes a 2.sup.nd spiral supporting plate, the conveyer belt extended from the heating furnace arranged on the 2.sup.nd spiral supporting plate along the spiral direction and one or multiple gas inlet/inlets to fill protective gas into the cooling furnace. A drive mechanism for a conveyer belt is installed on the main bracket. The conveyer belt runs through the heating furnace and cooling furnace and forms one loop via the drive mechanism.

A conveyer system for vertically and helically conveying a workpiece includes a main bracket, on which interconnected heating furnace and cooling furnace are arranged in parallel. The heating furnace includes a 1.sup.st spiral supporting plate, a conveyer belt arranged on the 1.sup.st spiral supporting plate along the spiral direction and one or multiple gas inlet/inlets to fill protective gas into the heating furnace. The cooling furnace includes a 2.sup.nd spiral supporting plate, the conveyer belt extended from the heating furnace arranged on the 2.sup.nd spiral supporting plate along the spiral direction and one or multiple gas inlet/inlets to fill protective gas into the cooling furnace. A drive mechanism for a conveyer belt is installed on the main bracket. The conveyer belt runs through the heating furnace and cooling furnace and forms one loop via the drive mechanism.

A fixture for use in an additive manufacturing and heat treatment process is disclosed. The fixture includes a tool with an upper surface and a lower surface, and an attachment system configured to releasably secure a substrate to the upper surface of the tool. The tool includes a body with an upper face and a lower face, and a reinforcement layer cladding the upper or lower face of the body. The reinforcement layer may be a superalloy.