Abstract: A rotary mill is provided with an improved loading means for charging material to the mill. The loading means is particularly adaptable for charging a batch-type rotary mill in a protective environment when, as part of a loading assembly of this invention, it is provided with removable plug and loading conduit members which can be interchanged without exposing the mill or charge material to air during the loading of the mill.
Abstract: A system for obtaining a sample of particulate material being processed under seal from the air in a batch-type rotary grinding mill which permits sampling of material being processed without disturbing the seal. The system is comprised of a sampling member and a plug member which can be interchanged under seal while maintaining the seal in the mill.
Abstract: A process for obtaining forged low density aluminum alloys having high strength comprising control of the extrusion and forging conditions, and dispersion strengthened Al-Mg-Li alloys derived from such process.
Abstract: An improved method is provided for producing mechanically alloyed powders on a commercial scale comprising milling the components of the powder product in a gravity-dependent-type ball mill to produce a powder having a characteristic apparent density. Powder so produced will have reached an acceptable processing level and will meet one criterion for determining whether it will be suitable for further processing to the end product.
Abstract: A hydrometallurgical process is provided for separating heavy metal nuisance elements such as As, Sb, Bi, Sn and Pb from precious metals and/or selenium. The process can be used as a step in an overall hydrometallurgical process for treating refinery residues such as anode slimes for the separation and recovery of valuable metal values.
Type:
Grant
Filed:
February 9, 1985
Date of Patent:
October 7, 1986
Assignee:
Inco Limited
Inventors:
John A. Thomas, Norman C. Nissen, Malcolm C. E. Bell, Alexander Illis
Abstract: A batch-type rotary grinding mill operable under seal to the atmosphere is provided with a discharge system which permits discharge of material from the mill under seal and without disturbing the seal in the mill. The discharge system comprises at least one discharge chute which is sealably secured to the shell wall, spiraling adjacent to the shell and traversing the shell wall from one end to the other. The material is discharged from the discharge chute via a hollow trunnion which, preferably, contains a conveyor to aid in passing the material out of the mill into an environmentally protected device.
Type:
Grant
Filed:
March 15, 1985
Date of Patent:
August 5, 1986
Assignee:
Inco Alloys International, Inc.
Inventors:
James C. Mehltretter, Winfred L. Woodard, III, John J. Orlando, Charles B. Goodrich
Abstract: A dispersion strengthened mechanically alloyed aluminum-base alloy system is provided by a process comprising solution treating an alloy consisting essentially of, by weight, about 0.5 up to about 4% lithium, above 1% up to about 5% magnesium, about 0.5% up to about 2% carbon, a small but effective amount of oxygen which does not exceed 1%, and the balance essentially aluminum, the dispersoid content of the alloy being up to about 8 volume %. Preferred embodiments of the alloy are in the solution treated or solution treated and underaged condition are characterized by an improved combination of strength, low density, ductility, and fracture toughness.
Abstract: A dispersion strengthened aluminum-base alloy system is provided which is prepared by mechanical alloying and is characterized by an improved continuation of properties over binary aluminum-lithium alloys. The alloy system contains, by weight, about 0.5% up to about 4% Li, about 0.05 up to about 2% carbon, about 0.1 up to about 3% oxygen, at least one of the elements magnesium or copper in an amount of up to about 5% each, provided the total amount of said magnesium and copper does not exceed about 8%, and a dispersion strengthening agent in the amount of about 2% up to about 8% by volume.
Type:
Grant
Filed:
March 10, 1982
Date of Patent:
June 10, 1986
Assignee:
Inco Alloys International, Inc.
Inventors:
Frank W. Heck, Stephen J. Donachie, Howard F. Merrick
Abstract: A process for producing a composite material comprising a base having a nickel surface and a gold layer metallurgically bonded to the nickel of the base and having sufficient nickel to increase the hardness of the gold layer but insufficient to significantly destroy the distinctive color of the gold layer comprises depositing the gold layer on the nickel and annealing the composite structure to provide the metallurgical bond between the nickel and gold and to interdiffuse said metals, and the composite structure obtained by said process. The composite material is particularly useful as a coinage structure.
Type:
Grant
Filed:
November 13, 1984
Date of Patent:
November 5, 1985
Assignee:
Inco Limited
Inventors:
James A. E. Bell, Bruce R. Conard, Douglas A. Hope
Abstract: A dispersion-strengthened aluminum-base alloy system is provided which is prepared by mechanical alloying and is characterized by high strength, high elastic modulus, low density and high corrosion resistance. The alloy system is comprised, by weight, of at least above 1.5% up to about 3% Li, about 0.4% up to about 1.5% O, about 0.25% up to about 1.2% C, and the balance essentially Al.
Abstract: A process for producing a composite material comprising a base having a nickel surface and a gold layer metallurgically bonded to the nickel of the base and having sufficient nickel to increase the hardness of the gold layer but insufficient to significantly destroy the distinctive color of the gold layer comprises depositing the gold layer on the nickel and annealing the composite structure to provide the metallurgical bond between the nickel and gold and to interdiffuse said metals, and the composite structure obtained by said process. The composite material is particularly useful as a coinage structure.
Type:
Grant
Filed:
June 13, 1983
Date of Patent:
March 19, 1985
Assignee:
Inco Limited
Inventors:
James A. E. Bell, Bruce R. Conard, Douglas A. Hope
Abstract: Metal flake of improved reflectivity is produced by a method comprising wet ball milling a metal powder in the presence of a lubricant comprising an organometallic compound.
Abstract: Metal flake of improved conductivity is produced by a method comprising wet ball milling a powder of a conductive metal in the presence of a lubricant comprising an organometallic compound.
Abstract: Directed to an overaging heat treatment applied to age-hardenable nickel-iron controlled expansion alloys so as to contribute high notch strength at temperatures on the order of about 1000.degree. F. thereto.
Type:
Grant
Filed:
September 17, 1981
Date of Patent:
May 1, 1984
Assignee:
Huntington Alloys, Inc.
Inventors:
Darrell F. Smith, Jr., Edward F. Clatworthy
Abstract: Directed to an overaging heat treatment applied to age-hardenable nickel-cobalt-iron controlled expansion alloys so as to contribute high notch strength at temperatures on the order of about 1000.degree. F. thereto.
Type:
Grant
Filed:
September 17, 1981
Date of Patent:
May 1, 1984
Assignee:
Huntington Alloys, Inc.
Inventors:
Darrell F. Smith, Jr., Edward F. Clatworthy
Abstract: An improved process is provided for producing mechanically alloyed powders of simple and complex alloy systems. In the improved process, the mechanically alloyed powder is milled to an acceptable processing level in a gravity-dependent ball mill to obtain a powder characterized by a laminate-type microstructure which is substantially optically homogeneous at a magnification of 100.times.. Such acceptable processing level is reached without processing the powder to a featureless microstructure or to saturation hardness.
Abstract: A hydrogen sorbent composition is provided which is comprised of a hydridable material such as LaNi.sub.5 encradled throughout a porous, fiber-containing polymeric composition.
Type:
Grant
Filed:
January 25, 1982
Date of Patent:
February 21, 1984
Assignee:
MPD Technology Corporation
Inventors:
Philip Bernstein, James P. Coffey, Alan E. Varker, John T. Arms, William D. K. Clark, Paul D. Goodell
Abstract: A method is provided for producing dispersion-strengthened mechanically alloyed Al-Li alloys with improved mechanical properties. The method comprises subjecting mechanically alloyed, degassed, consolidated Al-Li powders consisting essentially of from above 1.5% up to about 3.5% lithium from about 0.4% up to about 1.5% oxygen, from about 0.2% up to about 1.2% carbon and the balance essentially aluminum, to a heat treatment which will produce an aging response in the alloy.
Abstract: An unsupported particulate catalyst especially useful for methanation reactions is prepared by a method comprising fluid-bed roasting agglomerates of nickel sulfide to form a particulate precursor material which can be reduced to composite particles consisting essentially of a nickel-oxide core with a then coherent adherent layer of nickel thereon, the reduced particles being characterized at the surface by the presence of microcapillary pores interconnecting with each other and the outer surface of the particles.