Abstract: A thickened binder composition which comprises from about 3 to about 20 weight percent colloidal alumina, from about 1 to about 8 weight percent aluminum chlorhydrate and from about 0.1 to about 0.4 weight percent of an inorganic acid selected from hydrochloric and nitric acids and from about 75 to about 95 weight percent water;the method for manufacturing the binder composition and a fiber article by blending the ingredients of the binder composition with each other and by impregnating or blending fibers with the binder composition to form a fiber containing composition followed by drying and calcining the fiber composition; andan article comprising alumina-containing fibers bound together with alumina.

Abstract: A method for brazing a surface of an age hardened chrome copper member to a surface of a stainless steel member is disclosed. The process includes plating surfaces with copper, applying a brazed material of a copper/gold alloy between said surfaces, applying a brazing paste between said surfaces and rapidly heating the materials to fuse them together in a protected atmosphere. A particular disclosed embodiment of the method comprises the brazing of the cooler body assembly of a continuous casting die for casting copper strands.

Abstract: The present invention provides a process and apparatus for the production of refractory oxide materials having high fusion points. By high fusion points is meant melting points greater than 2400.degree. C.

Abstract: Pressureless sintered silicon carbide ceramic bodies, having an equiaxed microstructure and an alpha crystalline habit can be produced by firing shaped bodies, containing finely divided silicon carbide, boron source such as boron carbide, carbon source such as phenolic resin and a temporary binder, at a sintering temperature of from about 1900.degree. C. to about 2250.degree. C., depending on the sintering atmosphere, under conditions such that a coating of carbon source is maintained on the finely divided silicon carbide, and sufficient boron is maintained within the shaped body during firing. Boron can be maintained within the shaped body by various techniques, such as the use of a "seasoned boat" or graphite container for the body being sintered, which has been saturated with boron by exposure to boron at or about the temperature of sintering.

Abstract: There is disclosed a radiation vault enclosure comprising a radiation resistant structure, means for a web of material to enter said structure, means to carry said web past a source of electron beam radiation in said structure, means for said web to leave said structure and access means for a person to enter said radiation resistant structure for cleaning of the said means to carry said web. In a preferred embodiment the path of a curable resin coated web material through the chamber may be adjusted to provide electron radiation either to the wet resin side of the web or the back side of the web to cure the resin.

Abstract: Radioactive waste material, such as that resulting from radioactive weapons plant operation or from nuclear fuel reprocessing, in suitable form, such as radionuclide-containing oxide and/or oxyhydroxide and/or hydroxide particles, is held by a metal or metal "alloy" to an electrically conductive cathodic material upon which the metal or alloy is electrodeposited. In this way the radionuclide species including strontium and/or cesium, which are biologically extremely hazardous, are incorporated into a metal matrix held to a base and may be disposed of, as by underground storage, in such form, which is considered to be more resistant to dissolution by ground water and to damage by mechanical stresses arising from tectonic activity than are glasses or ceramics incorporating radionuclides.

Abstract: The invention relates to the recovery of precious metals which is accomplished by melting an alumina-containing spent catalyst having therein a minor amount of a precious metal. The melted alumina containing carrier material is heated to about 2100.degree. C. in an electric furnace. The alumina material is poured from the furnace for utilization in abrasives manufacture. The precious metal collects in the bottom of the furnace and is either poured off and allowed to solidify or allowed to solidify in the furnace. In one embodiment of the invention, the steps of melting spent catalyst and heating to form a molten mixture is repeated a multiplicity of times with pouring off of the molten carrier material. As a multiplicity of meltings and pourings are carried out, gradually there is an appreciable accumulation of the precious metals in the bottom of the furnace.

Abstract: A biaxially heat shrinkable sleeve, a prism which is usually a roller having its lateral area covered with a biaxially heat shrunken sleeve and the method for covering the lateral area of a prism such as a process roller with a biaxially heat shrunken sleeve.

Abstract: A cooled mold assembly for the continuous, high-speed casting of metallic strands, especially upcasting strands of copper alloys such as brass, has a hollow die in fluid communication with a melt typically held in a casting furnace. A coolerbody surrounds the die in a tight-fitting relationship to form a solidification front in the melt as it advances through the casting zone of the die. The die is preferably slip fit in the coolerbody. A shoulder on the die engages a lower face of the coolerbody and together with a small irregularity on the upper coolerbody wall prevents an axial movement of the die before it thermally expands against the coolerbody. An insulating member located between the die and the coolerbody and below the solidification front fixes the location of that front within a dimensionally uniform area of the die. The insulating member is preferably a ring of a material such as cast silica that has a low coefficient of thermal expansion, a low porosity, and is highly resistant to thermal shock.

Abstract: An oscillating cooled mold assembly for the continuous, high-speed casting of metallic strands or rods, especially upcasting strands or rods of copper alloys such as brass, has a hollow die in fluid communication with a melt typically held in a casting furnace. A cooler body surrounds the die in a tight-fitting relationship to form a solidification front in the melt as it advances through the casting zone of the die. The strand or rod formed from the solidified melt is pulled through the die while the mold oscillates in a direction substantially parallel to the direction of travel of the rod.

Abstract: In a coke oven coke side door machine, a bottom tray is mounted to collect spillage that results from the removal of coke oven doors as well as the residue buildup that is scraped from the door seals and bottom plugs during the door cleaning operation. Trays, in the form of inclined planes, are extended from the door machine to catch the coke spillage from the oven and to catch the residue buildup which is scraped from the door jambs during the jamb cleaning operations. This material gravitates down the trays into the catch pan. A scraper then pushes the material accumulated in the catch pan to one end of that catch pan where a conveyor carries it to a dump bucket. The dump bucket can be dumped when the door machine is positioned adjacent a quench car. All of the above apparatus is mounted onto and within the confines of the door machine.

Abstract: An extendible hopper is mounted to the undercarriage of a pusher machine and is operable to be extended to engage the face of the coke oven battery, between the buckstays and just below the door jamb, to catch hot coke that spills out of coke ovens as the door is removed and the pusher ram is retracted. A bin is also mounted to the undercarriage of the pusher machine to receive the hot coke collected by the extendible hopper. Quench sprays are mounted to the bin to quench the hot coke, and suction means are mounted to the bin to draw off pollutants that emanate from the hot coke and the quench thereof.

Abstract: A two-stage process, and the apparatus for practicing the process, for cooling process gas are disclosed. The process gas is firstly air-cooled by convection to a temperature above the dew point of naphthalene and finally cooled to the desired discharge temperature by heat exchange with a cooling liquid. The condensed portion of the process gas resulting from the first cooling stage may be utilized to flush the gas conduits of the liquid heat exchanger of the second stage, followed by a recirculation of that condensed portion of the coke oven gas either back through the second stage or by introduction into the stream of process gas prior to its introduction into the first cooling stage.

Abstract: In a slot-type coke oven battery, the sole flues side walls are constructed of two or more courses of clay liners. The sole flues also include a bottom liner means and are topped with rider tile. The intersections of the successive courses of liners are maintained in position by refractory cross-ties. Ports in the rider tile feature internal venturi shapes which enhance the flow of gases therethrough.

Abstract: A method of preparing coals for coking in a conventional coke oven includes agglomerating the loose coal, in combination with a binder, into flakes, mixing the flakes with non-agglomerated coal, and charging the mixture into the coke oven in the conventional manner. The method provides for the utilization in a conventional coke oven, of coals that are marginal in coking quality, greater bulk densities of the coal as charged into a conventional coke oven, acceptable shatter resistance and physical stability of the coke produced, and acceptable carbonization pressure on the coke oven walls.

Abstract: A one-spot coke quench car is provided with a coke pile dispersement means to evenly distribute the coke within the car to permit additional coke to be accommodated and as an aid in more uniform quenching. The car has a sloping conduit therein and an exterior water metering valve that is fluidly connected to a pressurized tank of water mounted on the quench car frame. A small quantity (about two gallons) of water is pressurized in the water metering valve which can be opened to allow the small quantity of water to flow immediately and almost instantaneously through the sloping conduit and into the pile of incandescent coke. The water suddenly flashes, explosively, into a large volume of steam, expanding rapidly to disperse the coke within the quench car so that it is more nearly level therein.

Abstract: A device for crushing sinter and other material of like consistency is disclosed wherein the flow sinter material is deployed against an impact table which directs the sinter material downward onto a series of vertically disposed discs fixed to a common means of rotation. The common means of rotation intersects each disc through its central axis. Adjacent to the discs and parallel to the common means of rotation is positioned a shaft upon which are mounted crusher means arranged to intersect and pass between the discs. As sinter is directed downward onto the discs, the crusher means rotates and forces the sinter between the discs, thus crushing it. Heat buildup in the discs is controlled by a means of cooling which impinges on the discs.

Abstract: A breast wall construction of a blast furnace hot blast stove includes a free-moving vertical arch composed of reverse wedge interlocking refractory shapes which form a monolithic unit upon differential heat expansion of the breast wall when the blast stove is operating in the on-gas mode.

Abstract: A wet seal standpipe cap to eliminate standpipe cap leakage includes a generally circular cap which has affixed to the underside of the cap a plurality of baffle rings. The cap is sized to enclose an opening in the top of a standpipe, and permit one of the baffle rings to penetrate a liquor contained in a canal placed around the standpipe opening providing a wet seal. The cap, in cooperation with the canal, entraps any leakage from around the standpipe opening between one of the baffle rings, underside of the cap and contained liquor.

Abstract: A centrifugal pump for feeding pulverized coal into a reactor of a high pressure coal gasification system is disclosed. The coal is pulverized and fed by conventional means into a hopper wherein that coal is mechanically pumped, by a modified screw which compacts the coal and releases entrained air and gases from that coal, to an impeller which serves to centrifugally sling the coal at high velocity into the reactor. Gases of the required type, pressure and quantity are combined with the coal at the point at which the coal is slung from the impeller in such a manner that the coal sufficiently dispersed and mixed with those gases and in proper form for gasification.