Abstract: According to one embodiment, an organic film forming apparatus includes a chamber configured to maintain an atmosphere more reduced than an atmospheric pressure, at least one processing room provided inside the chamber and being surrounded by a cover, and an exhaust part configured to exhaust the inside the chamber. The processing room includes an upper heating part including first heaters, a lower heating part including second heaters, and facing the upper heating part, an upper heat equalizing plate provided on the lower heating part side of the upper heating part, a lower heat equalizing plate provided on the upper heating part side of the lower heating part, and workpiece supporters configured to support a workpiece through a gap between the upper and lower heat equalizing plates.

Abstract: A thermal management assembly is provided for both removing heat and absorbing acoustic energy. The thermal management assembly includes a heat sink base component and a plurality of thermally conductive fins disposed in a sparsely-arranged array in thermal communication with the heat sink base component. Each fin defines a two-sided Helmholtz unit cell disposed in a periodic array extending from the heat sink base component. Each unit cell includes a lossy resonator and a lossless resonator. The lossy resonator includes a first chamber portion bounded by at least one first boundary wall defining a first chamber volume, and a first neck forming an opening in the first chamber portion. The lossless resonator includes a second chamber portion bounded by at least one second boundary wall defining a second chamber volume, and a second neck forming an opening in the second chamber portion.

Abstract: Embodiments of the present invention comprise a refractory delta made from a refractory material having a cold-face side and a hot-face side. One or more electrode apertures are located in the refractory delta for receiving one or more electrodes. One or more cooling apertures extend from the cold-face side of the refractory material to adjacent the hot-face side of the refractory material. The one or more cooling apertures may further comprise a copper tube. A cooling system delivers a cooling liquid to the one or more cooling apertures, and the cooling liquid draws heat from the adjacent refractory material, including the hot-face side, and evaporates to allow replacement cooling liquid to further draw heat from the adjacent refractory material.

Abstract: Annular swivel joint including an annular fixed part and an annular rotary part and having an annular trough that defines an annular volume, via which the circuits portions communicate, a stationary forward connection for receiving cooling fluid from the stationary circuit portion; a rotary forward connection for supplying cooling fluid to the rotary circuit portion; a rotary return connection for receiving cooling fluid from the rotary circuit portion; and a stationary return connection for returning cooling fluid to the stationary circuit portion; a partition dividing the annular volume into an annular external cavity and an annular internal cavity so that the forward connections are coupled via one of the external and internal cavities and the return connections are coupled via the other cavity, so that the internal cavity is at least partially surrounded by the external cavity.

Abstract: A wall lining of industrial ovens for protecting from corrosion, in particular, a heat-resistant wall made of concrete, steel, sheet metal, or the like. The lining of the wall is made of at least two layers, wherein a layer is pressurized as a blocking layer.

Abstract: A furnace is provided suitable for metallurgical processes, comprising at least one section comprised of refractory bricks with an outer shell plate adjacent to the refractory bricks, including exterior bricks whose external faces adjacent the shell plate define gaseous media cooling channels extending along the exterior of the refractory bricks between them and the shell plate. The furnace further comprises cooling plates within the cooling channels and joints between the successive courses of bricks. Advantageously, the conductivity of the cooling plates is at least 5 times the conductivity of the refractory lining into which it is inserted. Suitable materials include copper and copper-based alloys, brasses, bronzes, cast irons, aluminum alloys, silver, high-temperature steels, refractory metals and their alloys, graphite, silicon carbide, and aluminum nitride.

Abstract: Rotary furnaces and processes for heat treating a workpiece generally include an external shell wall and a refractory lining abutting the shell wall to define a substantially cylindrically shaped interior chamber for treating one or more workpieces; an opening in the an external shell wall and a refractory lining for loading and unloading the workpieces; a rotatable hearth for receiving and rotating the workpieces within the substantially cylindrically shaped interior chamber; and a plurality of thermal isolation walls, wherein adjacent thermal isolation walls define a space effective to accommodate and thermally shield each one of the workpieces to be treated and have a height at least equal to a height of the workpiece. The presence of the thermal isolation walls substantially prevents heat transfer between the workpieces being treated.

Abstract: A reactor comprising a thermal barrier surrounding a combustion zone. The reactor further comprises a cooling jacket inner wall and a binder disposed between the cooling jacket inner wall and the thermal barrier, and a cooling jacket outer wall, wherein the cooling jacket inner wall and the cooling jacket outer wall define a cooling channel. The reactor further comprises an outer reactor wall disposed over the cooling jacket outer wall, wherein the outer reactor wall is impermeable and is configured to contain high pressure gas within the reactor.

Abstract: A gasification furnace is provided. The gasification furnace includes an outer shell having an outer shell inlet formed at a top of the outer shell and an outer shell outlet formed at a bottom of the outer shell; an inner shell having an inner shell inlet corresponding to the outer shell inlet, and an inner shell outlet corresponding to the outer shell outlet, and being fabricated by a membrane wall having a cooling water inlet and a cooling water outlet; a nozzle; a lower shell having a slag exhausting port and a gas discharging port; a cooler having a cooling passage formed therein, a cooler water inlet, and a cooler water outlet; a positioning member disposed between the inner shell and an inner bottom wall of the outer shell; and a gas guiding pipe defining an upper end connected with the cooler, and a lower end extended downward.

Abstract: A system and process for removing an inorganic salt from a catalyst roaster belt is disclosed. The system includes an apparatus with a drying vessel having a catalyst roaster belt inlet, a catalyst roaster belt outlet, a heating medium inlet, and a heating medium outlet, wherein the catalyst roaster belt inlet and the catalyst roaster belt outlet are spaced apart along a first direction, the heating medium inlet and the heating medium outlet are spaced apart along a second direction, the heating medium inlet is spaced apart from the catalyst roaster belt inlet in the second direction, and the catalyst roaster belt inlet is between the heating medium inlet and the heating medium outlet along the second direction. The system includes an acid bath and a moveable catalyst roaster belt extending from the acid bath through the catalyst roaster belt inlet and through the catalyst roaster belt outlet.

Abstract: The subject innovation relates to a multi-deck chamber furnace for heating up workpieces comprising a furnace housing having at least two horizontal furnace chambers that are arranged vertically one above the other, whereby each furnace chamber has an opening in a furnace wall on one side, and said opening can be closed by a furnace door. The furnace is characterized in that the furnace doors are arranged in front of the openings of the appertaining furnace chambers in such a way that the transversal axes of the furnace doors enclose an angle ? with the furnace wall that is greater than 0° and smaller than 45°, whereby the transversal axis of a furnace door runs perpendicular to the horizontal axis of a furnace door. Furthermore, the furnace doors can be moved linearly along these transversal axes.

Abstract: A lifting apparatus for a vertical vacuum furnace is disclosed. The apparatus includes first and second support modules arranged in spaced parallel alignment and first and second reversible lifting mechanisms mounted on respective ones of the first and second support modules. The apparatus also includes first and second motive means coupled to the first and second reversible lifting mechanisms for driving the reversible lifting mechanisms. First and second trolleys are operatively connected to the first and second reversible lifting mechanisms and adapted for engaging with a payload. The apparatus further includes a control system connected to the first and second motive means for controlling the operation of the first and second reversible lifting mechanisms whereby the first and second trolleys can be raised or lowered. A vertical vacuum furnace assembly including the lifting apparatus is also disclosed as well as a support module and a bottom head assembly for the lifting apparatus.

Abstract: A secondary stave support for a furnace stave with a water pipe having a first portion of the water pipe external to the furnace stave and a second portion of the water pipe also external to a furnace shell wall comprising: a protection pipe having first and second ends, wherein the protection pipe is coaxially disposed about the water pipe with the first end nearest the stave; and a first gas-tight seal, disposed between the first end of the protection pipe and a third portion of the water pipe, prevents gas flow from within the furnace shell wall into an annular space between the protection pipe and the water pipe.

Abstract: An apparatus for processing coating material includes a crucible having a cylindrical receptacle for receiving coating material, a drive member having a drive shaft, and a cover coupled to the drive shaft. The cover has a flat surface. The drive shaft is configured to drive the cover to rotate thereabout between a closed position where the cover covers the receptacle and the flat surface presses against the coating material to flatten the coating material, and an open position where the cover is moved away from the receptacle.

Abstract: A pipe and method of use for deterring or encouraging the retention of slag or other material in the operating area of a metal processing system as desired. The deterring pipe(s) and the encouraging pipe(s) may be combined with other deterring pipe(s) and/or other encouraging pipe(s) in any combination as desired.

Abstract: The present invention is a heat processing apparatus comprising: a processing vessel that receives a plurality of objects to be processed in a tier-like manner to subject the objects to be processed to a predetermined heating process; a tubular heater disposed to surround the processing vessel, the tubular heater being capable of heating the objects to be processed; an exhaust heat system for discharging an atmosphere in a space between the heater and the processing vessel; and a cooling unit that blows out a cooling fluid into the space to cool the processing vessel. The heater has a tubular heat insulating member, and a heating resistor arranged on an inner circumference of the heat insulating member. The cooling unit has a plurality of blowing nozzles embedded in the heat insulating member. Each of the blowing nozzles is formed in such a manner that an inlet orifice of the blowing nozzle and an outlet orifice thereof are not linearly aligned to each other.

Abstract: A continuous pressure letdown system connected to a hopper decreases a pressure of a 2-phase (gas and solid) dusty gas stream flowing through the system. The system includes a discharge line for receiving the dusty gas from the hopper, a valve, a cascade nozzle assembly positioned downstream of the discharge line, a purge ring, an inert gas supply connected to the purge ring, an inert gas throttle, and a filter. The valve connects the hopper to the discharge line and controls introduction of the dusty gas stream into the discharge line. The purge ring is connected between the discharge line and the cascade nozzle assembly. The inert gas throttle controls a flow rate of an inert gas into the cascade nozzle assembly. The filter is connected downstream of the cascade nozzle assembly.

Abstract: A portable kiln has a set of wheels, a handle and a platform base. The wheels and the handle are attached on a first side of the kiln so that the kiln can be tilted and rolled on the wheels using the handle. The platform base provides a spaced distance between the wheels and the floor when the kiln is sitting upright in an operational position. The kiln may also include a metal outer shell wrapped about an oven portion. The outer shell has a shell sidewall radially spaced from the oven portion sidewall, which forms an annular air channel between the outer shell sidewall and the oven portion. The outer shell has a C-shaped cross-section and it has upper and lower vent openings for the air channel. A hinge assembly allows a lid of the kiln to rest in an open position.

Abstract: A modular furnace is fabricated from at least one module having a frame, a removable cover mounted to the frame, exterior cover panels on the frame, and an insulated case fastened to the interior of the module. A conveyor assembly extends through the module. A plurality of process zones, such as heating and cooling zones, are disposed within the module. Field replaceable universal blower assemblies are associated with each process zone. The motor shaft in each blower assembly is provided with a sealed bearing in the motor housing. Insulation within each module is held in place by gas permeable fabric covering large vent openings in cover panels to allow oxygen to diffuse out of the insulation rapidly upon start up.

Abstract: A furnace includes a core tube that has an elongate boundary wall and is configured to accommodate wafers for processing the wafers in a treatment atmosphere. The furnace includes a cooling chamber defined between the elongate boundary wall and an outer casing of the furnace, wherein the outer casing includes a heating element and has first lateral, circumferentially spaced openings in proximity of a first end of the outer casing and second lateral, circumferentially spaced openings in proximity of a second end of the outer casing. Cooling gas is supplied through one of the first and second lateral, circumferentially spaced openings to a region of one end of the cooling chamber and provides for a cooling atmosphere. The cooling gas is guided along the cooling chamber with a uniform distribution of flow and discharged through one of the first and second lateral, circumferentially spaced openings from a region of an opposite end of the cooling chamber.

Abstract: An improved non-recovery coke oven floor constructed of a single layer of refractory bricks including, for each oven sole flue, a pair of trunnion bricks and a center bridge brick spanning the width of the flue, having lower brick surfaces in the form of an arch, and joined end-to-end by a tapered tongue-and-groove joint disposed approximately perpendicular to the direction of a compression load transmitted by the center bridge brick to the trunnion bricks.

Abstract: An annealing furnace inner cover cooperates with a furnace base to define a treatment chamber within which a charge of metal such as steel is housed for annealing, wherein the inner cover carries at least one interior cooling conduit through which cooling water from an exterior source is circulated to expedite the cooling of gas that is circulated within the treatment chamber during cooling portions of an annealing cycle. The water cooled inner cover is especially well suited for expediting the cooling of stacked coils of steel sheet from an annealing temperature, and preferably utilizes a helix of cooling coils that surround mid-height portions of the stack, wherein the cooling coils are protectively housed within an inwardly facing recess defined by an enlarged diameter mid-height portion of the inner cover both to prevent cooling coil damage due to impact during cover movement, and to ensure that gas circulation within the inner cover is not adversely restricted by the presence of the cooling coils.

Abstract: Cooling device with panels for arc electric furnaces, which is used in an electric melting furnace in cooperation with the vertical sidewall placed above the lower shell (11) of the furnace, the furnace comprising in its lower part one lower shell (11) to contain a bath (12) of melting metal and an upper shell defined by a plurality of panels (16) comprising a plurality of cooling tubes (17), the lower shell (11) including at its outer part a metallic containing element (15), the inner refractory having an upper edge (19) located substantially at the level of the upper edge of the layer of slag (14) contained above the bath (12) of melting metal, each panel (16) including an outer layer (116) and at least an inner layer (22) of cooling tubes (17), the layers (116, 22) developing vertically along the vertical side wall of the furnace above the refractory edge of the lower shell (11) and being separated by an interspace (23).

Abstract: Cooling device with panels for arc electric furnaces, which is used in an electric melting furnace in cooperation with the vertical sidewall placed above the lower shell (11) of the furnace, the furnace comprising in its lower part one lower shell (11) to contain a bath (12) of melting metal and an upper shell defined by a plurality of panels (16) comprising a plurality of cooling tubes (17), the lower shell (11) including at its outer part a metallic containing element (15), the inner refractory having an upper edge (19) located substantially at the level of the upper edge of the layer of slag (14) contained above the bath (12) of melting metal, at least part of the outer panel (16) consisting of a horizontal row (18) of cooling tubes (17) arranged slightly above a substantial part of the upper refractory edge (19) of the lower shell (11).

Abstract: A coolable lining for a high-temperature gasification reactor, especially in the zone of a replaceable lower furnace, in which the refractory brickwork receives the melting liquid occurring in the melting operation during the gasification of household, industrial and special wastes. The refractory material, consisting of oxides of non-noble meals, is pierced at defined intervals by straight channels, into which it is possible to insert cooling elements that can be installed and removed from the outside.

Abstract: The invention relates to a cuboidal, fireproof wall brick for a heating channel of an open round-chamber kiln, having two horizontally extending setting surfaces, two vertically extending setting surfaces and two front surfaces, characterized by at least one bead-like recess in the region of at least one setting surface, the recess extending from one front surface to the opposite front surface.

Abstract: The invention describes a method and apparatus for controlling the temperature of the floor of a cooking oven by utilizing a recirculating primary heat transfer fluid made to flow through a heat exchanger located in an oven floor. After traveling through the oven floor and absorbing heat, the primary fluid travels to an external liquid-to-liquid heat exchanger wherein the primary fluid transfers heat to a secondary circulating heat transfer fluid. The primary fluid is then recirculated through the oven floor to maintain the floor at a predetermined temperature. The heated secondary fluid may then be utilized for other processes such as in the conveyor belt washing tank of the oven, or it may be discarded. The primary heat transfer fluid may be a thermal oil having a boiling point substantially in excess of 212.degree. F., and having other properties designed to prevent the corrosion, plugging, and fouling of the heat exchanger located in the oven floor. The second fluid is preferably water.

Abstract: The invention relates to a cooler grate for a reciprocating grate cooler, with a plurality of grate plate supports extending transversely with respect to the cooler grate and constructed as hollow bodies, on which in each case grate plates are supported so that they are co-ordinated in transverse rows and sealed by means of screw connections, wherein the grate plates have cooling gas openings and cooling gas connecting channels are constructed between the grate plate support and the cooling gas openings.

Abstract: The invention relates to a reciprocating grate cooler in which the drive arrangement is enclosed by a drive housing, the interior of which is closed off so as to be airtight against the atmosphere, but by contrast has a pressure equalization connection to the interior of the cooler housing. Such a reciprocating grate cooler is distinguished by a substantially reduced expenditure for the sealing of the cooler housing and a high degree of freedom from disruption.

Abstract: A roof structure for an electric arc smelting furnace includes a spider frame for supporting a plurality of independent removable coolant coil sections. An inner coil section is generally annular in shape and includes a coolant pipe which spirals completely around a central opening in the roof structure. An intermediate coil section is also generally annular in shape, but includes a coolant pipe which extends around the circumference of the inner section, reverses itself around the circumference of the first pipe of the intermediate section, and then reverses itself once again around the circumference of the second coolant pipe of the intermediate section, to form a generally serpentine pattern. A plurality of semi-annular outer coil sections are supported radially outwardly from the intermediate coil section. Each outer section includes a first pipe located generally centrally within the semi-annular section and extending from end to end.

Abstract: A furnace for high temperature, for example a glass furnace, is insulated thermally by arranging layers of material on the interior wall of the furnace shell. On the layers ceramic fibre material and a heat reflecting surface layer are arranged. According to the invention, the heat reflecting surface layer is arranged by a substance containing silicon. By subjecting the furnace to great heat and cooling it rapidly thereafter, a heat reflection is obtained in the micro-structure of the ceramic fibre. The substance may for example be water-glass. According to the invention, the fibre material is arranged in vertical blocks of trapezium form, then pressed and strapped up. After all blocks have been placed, one removes the strapping so that the blocks expand.

Abstract: A device is proposed for cooling the distribution chute of an installation for charging a shaft furnace. This installation comprises a feed channel, a rotary collar and a rotary cage, a fixed outer housing, a distribution chute mounted in a pivoting manner in the rotary cage, a driving means so as to cause the collar and the cage to turn, as one about the vertical axis of the channel and two drive casings acting on suspension shafts of the chute so as to pivot about a horizontal axis. An annular tank for feeding with cooling fluid is secured to the upper edge of the rotary collar. The distribution chute comprises a circuit for cooling the lower surface of its body and is connected directly, through channels passing axially through the suspension shafts of the chute and rotary connectors to the annular tank.

Abstract: An electric arc furnace has a dished hearth, vertical side walls, and a relatively flat roof consisting of a center portion, a relatively planar outer portion and a cylindrical skirt which abuts the side wall to define a space above and around the expected surface of the furnace charge wherein CO containing waste gases can be oxidized to minimize CO and promote heat transfer to the furnace charge. The roof center portion is refractory having holes for receiving electrodes and the outer portion is formed of water-cooled pipes which define sections of the annulus. The upper end of the side walls is also formed of water-cooled panels.

Abstract: A system for cooling a single or plural zones of the exterior of a furnace or similar hot device, e.g., kiln, calciner, etc. Each zone is cooled by a respective cooling assembly. The operation of the assemblies is effected by a common control system. Each cooling assembly comprises a shroud, an induction cooler, e.g., an exhaust fan, and at least one atomizing spray nozzle. The shroud is in the form of a jacket disposed over the associated exterior zone of the furnace and is spaced therefrom to form a cooling chamber therebetween. The exhaust fan is coupled to the shroud for inducing the flow of cooling air through the cooling chamber so that it absorbs heat from furnace's exterior. The atomizing spray nozzle is also coupled to the shroud and to a water and an air supply for introducing atomized droplets of water into the chamber, whereupon the droplets vaporize to absorb heat from the furnace's exterior. The exhaust fan vents the air and steam from the shroud means.

Abstract: A cooling system including a cooling duct adjacent to the hot air duct of an air heater. The cooling duct includes a first wall and a second wall spaced from the first wall such that a passageway is formed therebetween. A wire mesh sheet is arranged in the duct passageway. The wire mesh sheet comprises a plurality of layers of wire mesh and has an undulate configuration which together with its density prevents substantial heat radiation from the first wall of the cooling duct to the second wall without significantly impeding airflow through the cooling duct. Cooling air introduced into the cooling duct flows through the duct, removes heat, radiated by the first wall and absorbed by the wire mesh sheet, and carries that heat away from the duct as it exits through the outlet opening. In this way, the system cools the first wall and prevents any significant heat transfer to the second wall of the cooling duct and elements in the vicinity thereof.

Abstract: It is common practice to apply a shrink sleeve to a weld joint in a pipeline. The success of such application depends upon the ability to transport equipment from joint to joint and the adaptability of the heating apparatus to a variety of pipe sizes. A relatively simple apparatus for meeting the above defined requirements includes a skeletal frame carried by rollers for movably supporting the apparatus on a pipe to be heated, a clamp on the frame for releasably engaging the pipe to stabilize the apparatus, and heaters pivotally mounted on the frame for rotation between a closed position around the pipe and an open position permitting movement of the apparatus to another joint. By making the height of the frame variable, the apparatus can be adapted to pipes of different diameters.

Abstract: A refractory tile for a suspended wall of a glass furnace includes upper and lower horizontal faces having respective raised and depressed tongue and groove portions. The tile is adapted to be laid in overlapping or bonded courses such that the tongue and groove portions of a tile overlap and matingly engage the tongue and groove portions of two tiles in a subjacent course of tiles. Each tile also includes vertical side edges having mating ridges and grooves. Each of the tiles further includes a neck portion outwardly extending from a cold face edge thereof. The neck portion defines open spaces between adjacent tiles for insertion of insulation batts therein. The horizontal faces of the tiles also have slots formed therein for engagement with one of the hanger members. The slots have one of a transverse T-portion or a recessed portion formed therein and spaced inwardly from the cold face of the tile which are adapted to engage the hangers.

Abstract: An incinerator hearth includes a bottom formed of a refractory slab. The slab has a plurality of upwardly-extending projections which define a serpentine channel. A conduit is placed within the channel. The conduit is made of steel or another material capable of withstanding high temperatures. The height of the conduit is slightly lower than the height of the projections. The upper surface of the conduit and the upper surfaces of the projections together define the combustion surface of the hearth. A heat transfer fluid is pumped through the conduit, and this fluid prevents the combustion surface of the hearth from becoming too hot. Thus, slag formed in the hearth tends not to adhere to the combustion surface, and can be easily removed without damaging that surface and without requiring that the incinerator be cooled down and manually cleaned.

Abstract: A suspended back wall for a high temperature furnace including a plurality of spaced-apart, vertically extending columns having upper portions supported between spaced girder members to bear loading while permitting lateral thermal expansive and contractive movement of the upper portions of the columns. Lower end portions of the columns are attached to a main support beam which horizontally traverses the width of the suspended wall. A plurality of interlocking refractory tiles are secured on the vertical columns by cast metal hangers. A plurality of insulation slabs or batts are inserted in specially formed pockets between adjacent refractory tiles and columns at a rear face thereof. An air chamber is formed along the rear of the vertical columns and an air duct is provided along the bottom thereof to supply a regulated forced air flow to the air chamber.

Abstract: A cooling device provided in a thermal analyzer to cool a heating furnace by heat exchange between a cooling medium and the heating furnace based on direct and uniform gas-to-solid contact, and constructed to facilitate replacement of a sample in the cooled furnace. The cooling device includes a jacket surrounding the heating furnace to define a closed annular space, an inlet formed to introduce cooling medium into the closed space, and an outlet formed to discharge the introduced cooling medium from the closed space. Cooling of the furnace is carried out due to the heat exchange between the cooling medium and the heating surface in the closed space. A top portion of the heating furnace is not covered by the jacket, but is exposed to thereby facilitate the replacement of a sample through the exposed top portion of the heating furnace.

Abstract: A heat exchanger for heating fluid particulate material comprising a heating chamber, heating means associated with the heating chamber, a hopper mounted above the heating chamber, a delivery chamber located below the heating chamber, a set of flow passageways extending through the heating chamber between the hopper and delivery chamber, said delivery chamber having an outlet at its lower portion.

Abstract: Coking emissions in the regions of the roof of the coke oven and adjoining lateral wall regions are removed by removing jets of fresh air from one longitudinal side to the other longitudinal side where the air, entraining the contaminant, is collected. The collected gases are supplied to the dry and wet cleaning.

Abstract: A shaft cooler for dry quenching of coke includes an inner masonry ring that is an independent structure suspended on the top edge of the outer masonry of the shaft cooler. The weight of the inner masonry ring is carried by stays which bear on the top edge of the outer masonry. The tubular stays are disposed in one embodiment inside the masonry ring and in another embodiment outside the masonry ring. The tubular stays are connected to ring mains for conducting a coolant medium. When the tubular stays are disposed outside the masonry ring, parallel tubes are interconnected along their entire length by webs to form a closed steel ring. Ring tubes are welded to the top and bottom ends to serve as a heat exchanger and are connected to the evaporator section of a waste-heat boiler of the shaft cooler. Flue-gas passages are formed at the bottom edge of the masonry ring by radially, spaced-apart webs.

Abstract: An insulated refractory shield is provided to reduce heat loss through the exterior surface of the refractory shield while at the same time a cooling fluid is directed over the cast metallic refractory supports and hanger means through apertures in the hanger tube. Modular insulation units are provided and are retained between the exterior face of the refractory bricks and the hanger tube by means of specialized wedges and support clips.

Abstract: A lid construction for a heating vessel. Discrete insulating members are supported by water cooled pipes above the vessel. The cooling pipes fit into grooves along the vertical side walls of the insulating members. Each member has a support independent from the supports for the other members so that an individual member can be removed within having to remove additional members.

Abstract: A fluid cooled roof assembly for an electric arc furnace comprised of at least three circular sector shaped panels having coolant passages and an outer ring member supporting a plurality of connected arcuate ring sectors which extend upwardly away from the interior of the furnace giving added height thereto, and on which the assembled panels are supported in a flat disposition. The circular sector panels, when assembled, are designed to provide ports for receiving the electrodes and come together at a point location in the center of the roof forming a full circle which completely covers the furnace.

Abstract: A water cooling apparatus is presented for use in conjunction with a charging device of a shaft furnace, particularly a shaft furnace having a bell-less top charging apparatus. The cooling apparatus essentially comprises an annular feed vat which is attached to the upper portion of a rotary shell and is movable with the rotary shell. The vat is provided with at least one opening whereby water is gravity fed from the vat through plural cooling coils positioned about a rotary jacket. An annular collecting conduit receives the water flowing from the coils. The rotary jacket supports the suspension mechanism of a distribution spout and also acts as the separating structure between the furnace interior and the component parts of the charging device.

Abstract: The present invention relates to apparatus for cooling an object which is exposed to high temperatures and particularly to cooling by heat transfer to a liquid. According to the invention an internal hose is disposed in a fluid conduit. The hose is permeable to the coolant liquid which is circulated therein so that there is created a substantially stagnant fluid boundary layer between the walls of the tube and the internal hose for efficient heat transfer to the circulating fluid within the hose.

Abstract: A membrane cooling system for a metallurgical furnace including a single or series of individual panel sections, each section including a plurality of closely spaced cooling tubes disposed in laterally spaced relation, the tubes being arcuate and/or linear in a lengthwise direction and oriented circumferentially to define exposed inner furnace wall surfaces, spacer bar elements are disposed centrally between and extend between adjacent of the tubes to provide a trough-like recess therebetween, weldments join the spacer bar elements to the cooling tubes to form a continuous, undulating membrane surface, and retention elements are made integral with the membrane surface and extend from the hot face thereby to provide, by refractory or slag build-up, a protective and heat insulation barrier layer of generally uniform thickness to protect the panel sections and to reduce energy losses to the cooling system.

Abstract: The inner wall of a combustion chamber is composed of a plurality of ceramic plates which are suspended from the outer wall of the chamber by being hooked over mounting portions of the outer wall; this eliminates the need for screws, bolts, welds or the like and facilitates mounting and dismounting of the plates. The plates define with the outer wall a clearance into which cold air is admitted; the upper and lower edges of adjacent plates define with one another respective air gaps communicating with this clearance so that air streams enter the combustion space through these gaps. These air streams prevent the deposition of ash and other contaminants on the inner surfaces of the plates.