A shield for injection lances in metal production furnaces facilitates the adjustment of the contents of the melt in the metal production furnace. The shield has an outer shell joined to an inner shell by a face plate. The outer shell and inner shell define a fluid chamber between them and the face plate has an inlet aperture and an exit aperture for coolant flow through the fluid chamber. The shield is sized and shaped to fit into or around an aperture in the wall of the furnace. The shield has apertures through it to facilitate introduction of additives to the melt in the metal production furnace.

A heat treating furnace of the type used in semiconductor manufacturing having a housing with a tubular and cylindrical inner layer constructed of ceramic fiber. Electrical heating elements are supported by the inner layer while a microporous silica layer surrounds and is in contact with the ceramic fiber layer. A rigid cover surrounds the microporous silica layer.

A smelting ladle includes a housing, a circulating working layer, a consumable working layer, and a permanent layer. The permanent layer is masoned or casted on an inner wall of the housing, the circulating working layer is casted on an inner wall of the permanent layer, and the consumable working layer is masoned on an inner wall of the circulating working layer.

A shielding module for a high-temperature furnace has a packet of interconnected shielding plates. The packet of interconnected shielding plates is mounted to a common base body. The base body has fixing points for fixing to base bodies of other shielding modules of the same kind.

The present disclosure relates to a system for storing and time-shifting at least one of electrical power, excess electrical power, or renewable electrical power, to create low-carbon heat for future use in assisting with a production of asphalt paving material. The system makes use of a first thermally insulated storage subsystem containing a quantity of an asphalt paving material manufacturing component, and a first furnace configured to heat the asphalt paving material manufacturing component using an available supplemental energy source. A second thermally insulated storage subsystem is used to store a quantity of asphalt binder, and a second furnace is used to heat the quantity of asphalt binder. An air blower is used to supply a quantity of air to the first furnace to assist in a heating during a heat-charge phase of operation of the system in which both the quantity of asphalt paving material manufacturing component and the quantity of asphalt binder are pre-heated.

A combustor for a gas turbine engine includes a support shell; a first liner panel mounted to the support shell via a multiple of studs, the first liner panel including a first rail that extends from a cold side of the first liner panel such that the rail is non-perpendicular to the cold side and includes a concave surface to at least partially form a curved interface passage; and a second liner panel mounted to the support shell via a multiple of studs, the first liner panel including a second rail that extends from a cold side of the second liner panel and includes a convex surface to at least partially form the curved interface passage.

The present disclosure discloses a refractory protection layer for a metallurgical furnace, which includes a insulating layer, a permanent layer built with a refractory brick and arranged on the insulating layer, a working layer built with a refractory brick and arranged on the permanent layer, and a first anti-permeation layer made of ramming mass and arranged on the working layer. The refractory protection layer for the metallurgical furnace described in the present disclosure embodiments has both high temperature resistance and good permeability resistance.

A smelting ladle and a method for improving use efficiency thereof. The smelting ladle includes a housing, a working layer, and a permanent layer. The method includes: 1) rebuilding the working layer to have an outer layer and an inner layer, the inner layer being a consumable working layer which contacts with molten steel and steel slag, and the outer layer being a circulating working layer which contacts with the permanent layer or directly contacts with the housing; 2) allowing the smelting ladle to work, when the thickness of the consumable working layer is reduced to be between 0 and 20 mm, removing a residue of the consumable working layer and masoning a new consumable working layer for the smelting ladle; and 3) repeating 2) until the circulating working layer reaches a designed service life thereof, and casting a new circulating working layer for the smelting ladle.

The present invention provides a high temperature vacuum furnace that includes a hot zone designed for improved energy efficiency resulting in lower electrical power usage and the ease of replacement of components for lower maintenance costs. The furnace is also less expensive to manufacture compared to prior art vacuum furnaces. The present hot zone has an outer supporting wall and an inner insulating wall. The insulating wall is surrounded by a new HEFVAC high density, high strength, low conductivity, and low moisture-sensitive graphite insulation board ring designed with a unique attachment of adjacent insulation boards in order to contain radiant energy within the hot zone during the heat treating cycle. The hot zone further includes heating elements made of high quality graphite in a polygon arrangement with new connector joints that require fewer penetrations between the hot zone supporting wall and insulating wall, resulting in an increased thermal efficiency of the furnace. The hot zone also incorporates newly designed lower mass, tapered graphite nozzles that can sustain high pressure gas flow and decrease conductive heat losses from the nozzles to the hot zone chamber outer supporting wall during the heat treating cycle.

A thermal process device for heat treating a product or plurality of products includes a thermal processing chamber having opposed distal ends and at least one controllable heating zone. At least one buffer zone disposed is at each of the distal ends, the buffer zones and at least one heating zone of the thermal processing chamber forming a heating element assembly having an inner and outer surface. At least one layer of insulating material is disposed along the at least one buffer and heating zones of the thermal processing chamber and forming part of the heating element assembly, the at least one layer of insulating material having a controlled efficiency being applied non-uniformly across an axial length of the heating assembly.