Abstract: An apparatus for manufacturing a vitreous slag, which comprises: a pair of cooling drums, the peripheral surfaces of said pair of cooling drums being in contact with each other, and said pair of cooling drums rotating in directions opposite to each other at the same peripheral speed; a pair of weirs provided at the upper halves of the both ends of said pair of cooling drums so as to be in contact with said both ends of said pair of cooling drums, a slag sump being formed by means of said pair of weirs and the bodies of said pair of cooling drums, and molten slag being poured into said slag sump; a cooling medium for cooling said pair of cooling drums, said cooling medium comprising a high boiling point heat medium having a boiling point under 1 atmospheric pressure of at least 200.degree. C.

Abstract: Flat articles, in particular printed circuit boards, coated with a curable material, repose at their edges upon two belt conveyors which are positioned at an inclination. By means of these belt or band conveyors, the printed circuit boards are fed, in a predetermined conveying direction, below a heating device containing at least one hot air infeed device. The surface or face of the printed circuit board confronting such hot air infeed device is therefore subjected to the action of the hot or heated air, resulting in curing or hardening of the applied material layer. At the opposite side of the printed circuit board, facing away from the hot air infeed device, there is arranged a collecting tube or pipe which extends in the conveying direction. This collecting tube is provided with outlet openings for cooling air. Hence, the lower face of the printed circuit board has applied thereto the cooling air.

Abstract: The present specification describes and claims a method and apparatus for use in cooling the solid residue of gasification of a reactor operated at a pressure above atmospheric for the gasification of carbonaceous materials. The residue of gasification is conducted out of the reactor into a cooling apparatus located therebelow and flows through the cooling apparatus from the top to the bottom thereof. A cooling liquid is introduced into the solid residue in the upper region of the cooling apparatus and is metered such that the greater portion of the heat contained in the residue is eliminated in the form of heat of vaporization, sensible heat and chemical binding energy with the resultant steam and reaction products produced. The remaining residual heat which corresponds to the difference between the desired final temperature and the temperature after cooling by the liquid, is eliminated by a gas blown into the bottom region of the cooling apparatus and/or by indirect heat exchange.

Abstract: A process for thermal regeneration of charged activated coke or activated carbon granulate, in which the granulate is preheated in a preheating zone, and is then heated in a heating zone of a traveling bed by direct contact with a heated stream in the form of a partial stream of desorption gas expelled from the granulate. The granulate is then cooled in a cooling zone immediately after leaving the heating zone. The preheating and cooling procedures are carried out by using a heat exchange medium which is separate from the heated stream in the heating zone.

Abstract: An apparatus or system for cooling the interior of an autoclave furnace vessel after it has been pressurized with a gas and heated. The system comprises a heat conducting conduit opening at one end to the furnace interior and at the other end to a shut-off valve exterior to the vessel. Intermediate the two ends of the conduit is a coil portion comprising a heat exchanger positioned at a location in the furnace where hot vessel gases may be forced through or past the coil. Furnace gases are forced into the conduit and therefore through the coiled portion where they are heated prior to being exhausted. According to a preferred embodiment of this invention, there is a Joule-Thomson valve before the coiled portion of the conduit to reduce the temperature of the exhausting gases prior to arriving at the coiled portion.

Abstract: There is provided a vacuum oven with a gas cooling device with which the heat treated charge for cooling is blown on with a cooling medium from nozzles arranged around it in which the nozzles in the heating chamber are arranged parallel to the axis of the oven and are placed on gas inlet tubes rotatable around its axis.

Abstract: A rotary kiln or combustor having a plurality of water cooled pipes secured together to define a cylinder in which material is burned. The cylinder slowly rotates about its axis, and the pipes are secured together so as to define a plurality of intermediate openings making the cylinder gas porous and through which combustion air is introduced. The improvement comprises providing a plurality of pins, secured directly to the pipes on the inside of the cylinder, that create a pattern of projections to support burning material slightly spaced from the inner cylinder wall.

Abstract: Satellite cooling tubes are mounted about a cylindrical rotary kiln, and funnel-shaped couplings connect one end of each cooling tube to the cylindrical kiln. A pair of cylindrical discharge spouts and connecting sockets are connected between the kiln and each of the funnel shaped couplings. The discharge spouts are arranged in an equally spaced annular array about the rotary kiln in two annular rows with the spouts of one row being offset circumferentially with respect to the spouts of the other row.

Abstract: A vessel for a metal smelting furnace is disclosed. The vessel is provided with a heat-resistant interior wall and means for cooling the portions of said interior wall above the smelting zone. In accordance with the invention, the cooling means comprises an interior wall at least partially formed by at least one cooling pipe coil wherein the coil includes thick-walled pipes and neighboring sections of the coil are arranged in a closely adjacent relation. A cooling medium such as water is fed through the pipe coil under high pressure to dissipate heat from the interior wall of the vessel.

Abstract: A cementitious product is produced from a combination of two groups of materials: the first group consisting of lime or Portland cement or Linfan (which is defined as a thermally cracked shell of calcium sulfate surrounding a core of lime) or Linvein (a lime particle coated with cracked calcium carbonate); and a second material consisting of thermally cracked fly ash which is cracked by thermally quenching such finally divided particulate material from an elevated temperature at least above 300.degree. C. and preferably higher than 450.degree. C. to ambient or below ambient temperatures.The two materials are blended together. They are mixed with water, placed in a form, and then allowed to cure. Filler materials can also be used in the form of sand, gravel, and other aggregates, depending upon the strength and compositional characteristics desired in the final product.

Abstract: A method and apparatus is disclosed for the cooling of a lime shaft furnace for the calcining of limestone and which is operable with a combustible fuel. In shaft chambers of the shaft furnace, a hollow beam is provided to convey combustible fuel into the shaft chamber. Associated with the hollow beam is a cooling unit for cooling walls of the beam. A closed circuit cooling liquid system connects with the cooling unit so as to maintain a flow of a cooling liquid through the cooling unit. The cooling liquid has a boiling point of greater than 100.degree. C. This cooling liquid is continuously recooled by a heat exchanger.

Abstract: A clinker roasting plant comprising a rotary kiln having a housing and a hot head. A cooler for cooling clinker is mounted downstream of the rotary kiln. There are also provided heat-exchange tubes arranged in the zone of flow of roasted clinker from the hot end of the kiln to the place of discharge of finished clinker from the cooler. A heat insulating casing is provided around the heat-exchange tubes, the casing having at least one movable wall for connecting the inner space of the heat insulating casing with the inner space of the zone of flow of clinker.

Abstract: Apparatus for processing extruded thermoplastic material by advancing a hollow extrudate from the die member of an extruder through auxiliary equipment followed by stress relieving the extrudate through a mesh guide means, wherein the initial portion is heated while the subsequent portion is cooled by passing it through the mesh guide which may be contained in a temperature controlled water bath.

Abstract: A sintering furnace for sintering magnetic-ceramic articles is in the form of a quick-firing carriage furnace having a cooling system for indirect cooling in a cooling zone, having a sluice chamber at its outlet-end and being gastight at its base.

Abstract: A thermal fusing device for softening toner images is provided in combination with a transport at the exit of the fuser which transport is characterized by a pair of nip-forming members one of which is provided with a plurality of recesses for receiving belt structures fabricated from a silicone rubber material. A second roll is provided also having recesses for receiving the belts and this roll is positioned remotely from the first mentioned roll so that the belts are entrained about the two rolls such that they protrude from the recesses to thereby provide a nip-forming roll wherein only the belts contact the toner material carried by the copy substrate. Additionally, a fan is provided for cooling the surface of the belt so that the toner will more readily solidify and the paper can be stripped therefrom due to the beam strength of the paper.

Abstract: Apparatus for cooling calcined or sintered particulate material discharged from a rotary kiln or other pyro-processing system. The apparatus includes an upright shell adapted to contain the material to be cooled, a mixing hopper arranged within the upper portion of the shell for mixing together particles of the material of different size and air distributing means arranged within the lower portion of the shell for releasing cooling air into the material. The apparatus is configured so that the cooling air moves counter to the direction of material flow.

Abstract: A cooling arrangement is provided for cooling a moving stream, of heated workpieces without thermal deformation. The arrangement includes a plurality of nozzles circumscribing the work which direct a spray mist of atomized water particles toward the work. The spray mist vaporizes at or near the surface of the work to produce a water vapor. By orientating the nozzle spray mist pattern in a predetermined manner and providing a plurality of axially spaced mist arrays, the water mist developed completely envelops the workpiece in a controlled manner to produce a uniform rate of cooling of the pieces.

Abstract: This invention is an apparatus for diffusing quench air at the exhaust of the air from a quench stack for cooling synthetic melt-spun fibers, comprising a series of slats arranged peripherally around the fibers in the quench stack.

Abstract: Direct-flame apparatus for drying coatings applied to the outer surface of metal cans. The apparatus includes a conveyor adapted to advance the cans in a continuous train through a tunnel having a series of direct-flame assemblies mounted therein, whereby each can in the course of its advance is progressively heated by the assemblies to cause the cans to emerge from the tunnel in a dried state. Each assembly is constituted by a gas-fed burner element and a hood placed thereover, the element emitting a sheet of flame which impinges on the coated surface and is flanked by curtains of air issuing from the hood at a velocity serving to confine the applied heat within a limited sector of the can and to prevent flashing of the coating despite the high temperature of the flame impinging thereon.

Abstract: The invention disclosed is addressed to a method and means of dry cooling bluk material within a closed system in which said material is usually supplied intermittently to a cooling station. The method comprises directing a substantially continuous stream of cooling gas through the bulk material to thereby cool it and at the same time heat the stream of cooling gas. The heated stream of cooling gas is removed from the bulk material and directed through a mixing zone where it is mixed with a stream of cold cooling gas. Preferably, the hot mixed gas is cleaned and thereafter cooled by passage through a heat exchanger means. A selected portion of the cold cooling gas is diverted from the main stream to the mixing zone for mixing with the heated stream from the bulk material. The nondiverted portion of the cold cooling gas is directed to and through the bulk material.

Abstract: In an evaporative cooling method by natural circulation of cooling water by the use of an evaporative cooling device comprising a cooling pipe fitted to an object to be cooled and a steam separator drum arranged above said cooling pipe, said cooling pipe and said steam separator drum being connected together by a downcomer and a riser, the cooling water in said cooling pipe is kept in complete liquid state and part of cooling water is evaporated only in said riser and said steam separator drum by setting parameters to satisfy the following formula:Q/V.sup.. .rho..sup.. c<.DELTA.T.sub.eq (P.sub.o, Ph.sub.3)WhereQ : Thermal load acting on said cooling pipeV : Amount of circulated cooling water in said cooling pipe.rho. : Lensity of cooling waterc : Specific heat of cooling waterP.sub.o : Pressure of said steam separator drumPh.sub.3 : Pressure of cooling water in the uppermost part of said cooling pipe.DELTA.T.sub.eq (P.sub.o, Ph.sub.3) : Boiling equilibrium temperature difference between P.sub.o and Ph.sub.

Abstract: The shaft cooler comprises a plurality of power-driven adjacent horizontal hollow perforated comminuting rolls. An upper section of the shaft cooler is adapted to hold a layer of material from 50 to 100 cm. deep above the rolls. Cooling air is supplied to the interior of each roll to cause it to be discharged into such layer of material. An aftercooling section below the rolls is provided with means for indirect cooling of the comminuted material and has a depth which is several times that of said layer.

Abstract: Hot gases for fluidizing the preheat compartment of a multi-bed fluid bed reactor are cooled by injection of water, or cool air and water, to reduce scaling of the ducts, hot cyclone, hot windbox and the tuyeres in the constriction dome separating the hot windbox from the preheat compartment.

Abstract: Apparatus is disclosed for automated mass production of precision transparent silica glass products in accordance with a unique process in which slip-cast fused silica articles are rapidly heated and sintered in a vacuum or in a helium or hydrogen atmosphere at high temperatures, such as 2950.degree. to 3150.degree.F. A heated graphite susceptor shaped to conform to the outer surface of the fused silica article is automatically moved between a cooling zone and an induction furnace chamber which is opened momentarily to admit the article. The furnace and the graphite susceptor are designed to cause the trapped gases in the article to move radially outwardly and to effect rapid heating so as to avoid substantial devitrification during sintering.

Abstract: A metal cooling wall surrounds a conveyor carrying solids such as steel slabs at high temperature through the chamber defined by the cooling wall and the wall receives heat from the slabs by radiation. A liquid such as water flowing under pressure within passages within the cooling wall removes heat from the cooling wall with the control of coolant temperature controlling the cooling speed of the solids. A gas such as water vapor or carbon dioxide gas having the absorbing ability of the radiation fills the space between the slabs and the cooling wall to further control the cooling speed of the steel billets.