Goose Creek, SC, United States
Goose Creek, SC, United States

Alcoa Inc. is the world's third largest producer of aluminum, behind Rio Tinto Alcan and Rusal, with corporate headquarters in New York City. From its operational base in Pittsburgh, Pennsylvania in the United States, Alcoa conducts operations in 31 countries. Alcoa is a major producer of primary aluminum, fabricated aluminum, and alumina combined, through its active and growing participation in all major aspects of the industry: technology, mining, refining, smelting, fabricating, and recycling. Aluminum and alumina represent more than three-fourths of Alcoa’s revenue. Non-aluminum products include precision castings and aerospace and industrial fasteners. Alcoa’s products are used worldwide in aircraft, automobiles, commercial transportation, packaging, building and construction, oil and gas, defense, and industrial applications.In May 2007 Alcoa made a US$27 billion hostile takeover bid for Alcan, aiming to unite the two companies and form the world's largest aluminum producer. The takeover bid was withdrawn after Alcan announced a friendly takeover by Rio Tinto in July 2007.Among Alcoa's other businesses are fastening systems, building products and Howmet Castings. The sale of the packaging unit was announced on December 21, 2007 and closed in the first quarter of 2008. Wikipedia.

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New 7xx aluminum casting alloys are disclosed. The aluminum casting alloys generally include from 3.0 to 8.0 wt. % Zn, from 1.0 to 3.0 wt. % Mg, where the wt. % Zn exceeds the wt. % Mg, from 0.35 to 1.0 wt. % Cu, where the wt. % Mg exceeds the wt. % Cu, from 0.05 to 0.30 wt. % V, from 0.01 to 1.0 wt. % of at least one secondary element (Mn, Cr, Zr, Ti, B, and combinations thereof), up to 0.50 wt. % Fe, and up to 0.25 wt. % Si, the balance being aluminum and other elements, wherein the aluminum casting alloy include not greater than 0.05 wt. % each of the other elements, and wherein the aluminum casting alloy includes not greater than 0.15 wt. % in total of the other elements.


Patent
Alcoa | Date: 2017-01-26

An insulation assembly is provided, including: a body of an insulating material with a lower surface configured to contact a sidewall an electrolysis cell; an upper surface generally opposed to the lower surface; and a perimetrical sidewall extending between the upper surface and the lower surface to surround the remainder of the body, the perimetrical sidewall including: an inner portion configured to face an anode surface of the electrolysis cell and provide a gap between the body and the anode surface of the electrolysis cell; wherein the body is configured to extend from the sidewall towards the anode surface.


Broadly, the present disclosure relates to sidewall features (e.g. inner sidewall or hot face) of an electrolysis cell, which protect the sidewall from the electrolytic bath while the cell is in operation (e.g. producing metal in the electrolytic cell).


A system is provided including an electrolysis cell configured to retain a molten electrolyte bath, the bath including at least one bath component, the electrolysis cell including: a bottom, and a sidewall consisting essentially of the at least one bath component; and a feed material including the least one bath component to the molten electrolyte bath such that the at least one bath component is within 30% of saturation, wherein, via the feed material, the sidewall is stable in the molten electrolyte bath.


Generally, the instant disclosure relates to fertilizer compositions and methods of making and using the same. More specifically, the instant disclosure relates to blast suppressant and/or blast resistant ammonium nitrate fertilizer compositions, as well as methods of making and using the same.


Patent
Alcoa | Date: 2017-07-19

The present disclosure related to an inert anode which is electrically connected to the electrolytic cell, such that a conductor rod is connected to the inert anode in order to supply current from a current supply to the inert anode, where the inert anode directs current into the electrolytic bath to produce non-ferrous metal (where current exits the cell via a cathode).


Patent
Alcoa | Date: 2017-03-15

An apparatus and method for measuring broken spot weld artifacts has a framework for supporting a light and a plurality of cameras for acquiring controlled images of a specimen with minimal distortion and parallax. The framework holds the specimen flat and in a reproducible position, controlling movement while imaging. The image data is received in a computer programmed with image processing software capable of isolating and measuring the artifacts. A calibration standard is used to correct for aberrations.


Patent
Alcoa and Phinergy | Date: 2017-02-22

This invention is directed to regeneration of solutions comprising metal ions, and production of valuable hydroxide compounds. Specifically, the invention is related to regeneration of spent electrolyte solutions comprising metal ions (e.g. Al ions), such as electrolyte solutions used in metal/air batteries. The invention is further related to production of layered double hydroxides, and, optionally aluminum tri-hydroxide from aluminate.


An aluminum sheet comprises a 3XXX or a 5xxx alloy having a tensile yield strength as measured m the longitudinal direction of 27-33 ksi and an ultimate tensile strength; wherein the ultimate tensile strength minus the tensile yield strength is less than 3.30 ksi (UTS-TYS (FR)La prsente invention concerne une feuille daluminium comprenant un alliage 3XXX ou 5xxx prsentant une limite dlasticit en traction telle que mesure dans la direction longitudinale de 27 33 ksi et une rsistance la rupture en traction, la diffrence entre la rsistance la rupture en traction et la limite dlasticit en traction tant infrieure 3,30 ksi (UTS-LET < 3,30 ksi). Un rcipient daluminium selon linvention comprend un dme, le dme comprenant une alliage daluminium 3XXX ou 5xxx prsentant une limite dlasticit en traction telle que mesure dans la direction longitudinale de 27 33 ksi et une rsistance la rupture en traction, la diffrence entre la rsistance la rupture en traction et la limite dlasticit la traction tant infrieure 3,30 ksi (UTS-LET < 3,30 ksi).


A fastener installation tool (10) including a cylinder assembly (12) having a housing (18) and a handle/sleeve assembly attached to the housing (18). The handle/sleeve assembly includes a handle (14) having a bore (58) and an inner wall (60) defined by the bore (58). The handle/sleeve assembly further includes an outer sleeve (100) having an outer wall (102) and an inner wall, and an inner sleeve (102) having an outer wall and an inner wall. The outer sleeve (100) is positioned within the bore (58) of the handle (14), while the inner sleeve (102) is positioned concentrically within the outer sleeve (100) to form an annular space (104) between the outer wall of the inner sleeve (102) and the inner wall of the outer sleeve (100). The annular space (104) is utilized to conduct hydraulic fluid.

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