A decompression heat-insulating pipe structure that can exhibit the desired heat-insulating performance and is easy to assemble. In the structure, a space between ends of inner and outer tubes is decompressed. The outer tube includes a first flange, which extends radially inward from an axially one end thereof, and a second flange, which extends radially outward from the axially other end thereof. The inner tube includes a third flange, which extends radially inward from an axially one end thereof and is opposed to the first flange at an axially inward position of the first flange, and a fourth flange, which extends radially outward from the axially other end thereof and being opposed to the second flange at an axially outward position of the second flange. First and second elastic seal members are disposed between the first and third flanges and between the second and fourth flanges, respectively.

A sealing system for isolating the environment inside a vitrification container from the outside environment comprises a vitrification container with a lid. The lid comprises two or more electrode seal assemblies through which two or more electrodes may be operatively positioned and extend down through the lid into the vitrification container. The electrodes may move axially up and down through the electrode seal assemblies or lock into place. The electrode seal assemblies each comprise a housing having two halves with recessed ring grooves. Sealing rings with a split may be placed into the grooves. Gas galleries may be machined or cast into the housing such that they are adjacent to the ring grooves. The gas galleries distribute gas onto the external faces of the sealing rings causing a change in pressure resulting in the sealing rings compressing onto the electrodes and forming a seal.

A rotary bed-type electric furnace includes a rotary bed configured to carry material, and a rotator configured to rotate the rotary bed so that material carried on the rotary bed passes through peripheral zones of the rotary bed-type electric furnace. The peripheral zones include a feeding zone configured to receive material on the rotary bed, a drying zone configured to dry and heat material by means of electrical energy, a heating zone configured to heat material by means of electrical energy, a cooling zone configured to lower the temperature of the material and configured to release gases from the material, and a discharging zone configured to discharge material from the rotary bed of the furnace.

A device for thermal treatment of bulk material, includes a travelling grate chain revolving in the direction of movement including an endless travelling grate with movable links. The travelling grate chain features a plurality of pallet cars, and grate rods arranged on crossbars. Further, wind boxes are arranged such that gas flows through the pallet cars and their grate rods from or into the wind boxes. At each pallet car at least one sealing blade is mounted in parallel to the moving direction and flush with the pallet car, whereby a sealing box is in parallel to the moving direction. A liquid medium is filled into at least one sealing box, such that the sealing blade is immersed in the liquid.

An exemplary embodiment of the invention provides a method of preparing a reinforced refractory joint between refractory sections of a vessel used for containing or conveying molten metal, e.g. a metal-contacting trough. The method involves introducing a mesh body made of metal wires into a gap between metal-contacting surfaces of adjacent refractory sections of a vessel so that the mesh body is positioned beneath the metal conveying surfaces, and covering the mesh body with a layer of moldable refractory material to seal the gap between the metal-contacting surfaces. Other embodiments relate to a vessel formed by the method and a vessel section with a pre-positioned mesh body suitable for preparing a sealed joint with other such sections.

A closure mechanism to inhibit escape of heat from an oven chamber of a conveyor oven having a conveyor hanger. The closure mechanism includes a plurality of plates configured to couple to a first and second pluralities of connection tabs of a conveyor oven. Each of the plurality of plates include a connection portion, an angled portion configured to extend downward from the connection portion within a slot of the conveyor oven and an engagement portion extending downward from the angled portion to form an engagement surface.

The present invention relates generally to furnace systems and more particularly, but not by way of limitation, to a split-ring assembly for sealing a junction between a catalyst tube and a furnace. In one aspect, the present invention relates to a ring-seal assembly. The ring-seal assembly includes a housing ring coupled to an outer surface of a furnace. The housing ring is disposed around a circumference of a tube proximate a junction with the furnace. The ring seal assembly further includes a brush seal that is at least partially disposed within the housing ring. The brush seal is disposed around the circumference of the tube. A plurality of brushes extend radially inwardly from the brush seal towards the tube.

A sealing device is installed in heating treatment equipment through which a steel strip passes, the device including a rotary damper which is placed above the steel strip so as to be in contact with the steel strip, and a roll which is placed below the steel strip so that the roll opposes the rotary damper to form a pair consisting of the rotary damper and the roll opposing each other, the steel strip passing through a gap, which is formed between the rotary damper and the roll opposing each other, in which two pairs each of which is the pair consisting of the rotary damper and the roll opposing each other are arranged in tandem in a moving direction of the steel strip in the heating treatment equipment, and an inert gas is fed into a space defined by the two pairs arranged in tandem.

The invention relates to a heat treatment device (100) for thermally treating a workpiece (101), in particular a strip-shaped workpiece (101). The heat treatment device (100) comprises a housing (102), which surrounds a chamber (103), in which the workpiece (101) can be positioned for carrying out a thermal treatment. The workpiece (101) is supported by a first roller (110) and can be moved along the direction of travel (105). The first roller (110) and a first brush seal (111) are arranged in relation to one another in such a way that a first side of the workpiece (101) is in contact with the first roller (110) and a second side of the workpiece (101), which is opposite the first side, is in contact with the first brush seal (111), such that, via the roller (110) and the first brush seal (111), at least one first section (I) of the chamber (103) is sealed in relation to a second section (II) of the chamber (103).

A sealing valve arrangement for a shaft furnace charging installation, said arrangement comprising: a shutter arranged for cooperating with a valve seat; an integrated dual-motion shutter-actuating device for moving said shutter between a sealed closed position in sealing contact with the valve seat and an open position remote from the valve seat, said integrated dual-motion shutter-actuating device comprising: a primary motion assembly for moving said shutter from said sealed closed position to an undamped position wherein the shutter is released from the valve seat; a secondary motion assembly for tilting said shutter from said undamped position to said open position remote from the valve seat, said secondary motion assembly comprising a tilting arm carrying said shutter and connected to a tilting shaft that defines an axis of rotation and a tilting shaft actuator configured to impart an angular rotation about said axis to said tilting arm; wherein said integrated dual-motion shutter-actuating device further comprises a stationary outer cylindrical sleeve, wherein said primary motion assembly comprises an inner eccentric sleeve shaft rotationally mounted within said outer cylindrical sleeve and a primary motion actuator configured to impart angular rotation to said inner eccentric sleeve shaft, the primary motion being a function of the eccentricity and angular rotation of the inner eccentric sleeve shaft; and wherein said tilting shaft of said secondary motion assembly is rotationally mounted within said inner eccentric sleeve shaft of said primary motion assembly, the secondary motion being a function of the angular rotation of the tilting shaft.