Abstract: A hydrometallurgical process for treating copper refinery anode slimes containing selenium, lead and precious metals in which a selenium product of better than 99.7% purity can be produced and the final residue is suitable for smelting to produce anodes for silver refining.

Abstract: Apparatus and method for laser welding in a controllably pure gaseous environment at sub-atmospheric as well as high pressures. A workpiece to be welded is contained within a vessel having a light transmitting means which allows passage of a laser beam into the vessel. A gas stream is introduced to the vessel through a gas inlet means and positioned so that the stream deflects ionized particles from impinging on the light transmitting means. The gas stream simultaneously serves to cool the light transmitting means. Weld debris and spent gas are exhausted through a gas exhaust means which preferably is located adjacent to the workpiece. The apparatus is particularly suited to the laser welding of oxide dispersion strengthened alloys.

Abstract: A calcium-nickel compound, CaNi.sub.5, is used to store hydrogen at sub-atmospheric pressures. Charging of the calcium-nickel compound with hydrogen can be accomplished at sub-atmospheric as well as at high pressures. Stored hydrogen can be released from a valved vessel containing calcium-nickel by application of a vacuum or by heating.

Abstract: A nickel-mischmetal-calcium compound is used to store gaseous hydrogen at pressures up to about 15 atmospheres at ambient temperatures. The Ni.sub.5 M.sub.1-y Ca.sub.y compounds have values of y ranging from about 0.2 to about 0.9. Alloys conforming to this formula contain from about 4% to about 27% mischmetal, from about 2% to about 11% calcium, up to about 15% copper, and the balance essentially nickel.

Abstract: Directed to a cable rock anchor device whereby a load-supporting cable having considerable length may be anchored in a hole to provide ceiling or wall support underground comprising cable gripping means for gripping the cable during advance of the cable and device through a hole and expandable hole gripping means in contact therewith whereby tension applied to the cable causes the cable gripping means to grip the cable more tightly and causes expansion of the hole gripping means to grip the hole wall.

Abstract: A composite electrode especially suitable for electrowinning processes comprising an electrically conductive substrate having on at least a part of its surface a multilayer coating, said coating comprising:(a) a barrier layer directly on the substrate;(b) a ruthenium dioxide-containing non-electrodeposited surface layer; and(c) between the barrier layer and the surface layer, an intermediate layer consisting of an electroplated ruthenium-iridium deposit, said ruthenium-iridium deposit being at least partially in an oxidized state.

Abstract: A method is provided for preparing a supported catalyst composed of a structural substrate having an adherent, coherent, coating of a catalytic material which comprises applying on the substrate a dispersion comprising a stabilized colloidal silica solution having dispersed therein a fine metal powder which contains at least two of the metals nickel, chromium, and copper as mixtures or alloys or a combination thereof, and firing the coated substrate in a protective atmosphere at an elevated sintering temperature to form an adherent, coherent, coating.

Abstract: A metal sorter including a pair of electrically conductive probes of identical metallic composition are placed in contact with a metallic specimen. A thermoelectric heat pump is positioned between the two probes to produce a temperature difference therebetween, a temperature sensing device senses the temperature difference and provides an electric signal to control the electric power supplied to the heat pump. A detection device provides an electric signal indicative of the potential difference between the probes.

Abstract: An alloy difficult to produce by conventional electrodeposition techniques is produced by electrodepositing at least one metal selected from the group comprising nickel, up to 50% cobalt, and iron with particles incorporating metal in chemically combined state. The particles contain a reactive element, such as carbon, nitrogen, and boron, and a metallic element, such as chromium, molybdenum, and tungsten. The electrodeposit of the particles in a metal matrix is treated in a reducing atmosphere so that the particles react, releasing at least some of their incorporated metal into the matrix to form the alloy while transferring the reactive element to the reducing atmosphere.This invention relates to a process for the production of an alloy.It is known to codeposit two or more metals on a substrate by electrodeposition either as permanent coatings or as coatings subsequently removed from the substrate, such as electroforms, to form an alloy with or without diffusion heat treatment.

Abstract: A nickel-base alloy intended for diverse application, including components for high temperature, gas cooled reactors (HTGR), the alloy containing, in addition to nickel, chromium, tungsten, titanium and carbon, the presence of aluminum and cobalt being controlled for HTGR use.

Abstract: An electrode for electroslag remelting is provided by combination of an ingot having a toe end with an essentially flat outer annular surface and a central protrusion together with a current-carrying stub bridging across the central protrusion and welded to the flat portion of the ingot toe end on opposite sides of the protrusion such that metal wastage and surface preparation costs for stub-to-ingot welding are avoided.

Abstract: A process for separating nickel and cobalt present in a sulfate solution includes using a cationic extractant to extract both metals, treating the loaded cationic extractant with an aqueous chloride or thiocyanate solution to back-extract the cobalt and thereafter recovering the cobalt from the back-extraction aqueous solution by solvent extraction or ion exchange with an anionic extractant.

Abstract: A self-shielding, flux cored arc welding electrode for joining Ni-Cr-Fe alloys and overlaying dissimilar metals. The wire has a nickel-chromium containing alloy sheath and a flux core containing special proportions of carbonates, fluorides, metal oxides, and powdered metals. Sound welds can be prepared without the use of a supplemental inert shielding gas. Welded joints provide essentially the same properties as those of the Ni-Cr-Fe base alloy.

Abstract: An electrodeposition mandrel for nickel electrodeposition having islands of bare metal surface finished by grit blasting with either cast iron grit or aluminum oxide grit to a RMS surface finish of about 130 to 300.mu. inch when cast iron grit is employed and about 25 to about 150.mu. inch when aluminum oxide grit is employed.

Abstract: A flash smelting furnace has an outer metallic shell from which portions are cut out to expose the outer surface of the refractory lining at a depth corresponding to the location of the matte-slag interface, and gaseous cooling jets are directed onto the exposed refractory lining.

Abstract: Nickel-iron and nickel-iron-cobalt alloys contain chromium and gamma-prime hardening elements in proportions balanced according to special compositional relationships providing desired thermal expansion, inflection temperature, strength and ductility characteristics, particularly including notch strength needed in machinery and structures subjected in use to varying temperatures and thermal gradients where operating temperatures become elevated above 500.degree. F.

Abstract: Electromechanical impact meter enables obtaining real-time on-site collection rate information concerning undersea mining of manganese nodules or other solid minerals at a remote location.

Abstract: A sulfide containing copper and one or more of iron, nickel and cobalt, is dead-roasted at a temperature of 750.degree. C or above, then subjected to a pressure leach under reducing conditions to produce elemental copper and an aqueous solution of the other metals.

Abstract: Ferruginous sulfide minerals containing non-ferrous metal values, such as nickel and cobalt are treated to concentrate the non-ferrous metal values in metallic iron. An intimate admixture of finely-divided non-ferrous-metal-bearing ferruginous sulfide minerals, iron oxide, and a suitable reducing agent is maintained at a temperature between about 800.degree. C. and 1000.degree. C. in an atmosphere non-oxidizing to iron to produce a metallic iron alloy containing the non-ferrous metal values from the sulfide minerals. The heated admixture is cooled and the concentrated non-ferrous metal values in the iron alloy are recovered by magnetic separation or hydrocloning.

Abstract: Discloses the use of collapsible hollow structures within a mass of metal-hydride material used in a pressure vessel for storing hydrogen.