公开(公告)号：US11753345B2

公开(公告)日：2023-09-12

申请号：US16228295

申请日：2018-12-20

Applicant: ALCOA USA CORP.

Inventor： James C. McMillen ,  Lance M. Sworts ,  Benjamin D. Mosser

IPC: C04B35/58 ,  C04B35/626 ,  C01B35/04

CPC classification number: C04B35/58071 ,  C01B35/04 ,  C04B35/58 ,  C04B35/626 ,  C04B2235/3241 ,  C04B2235/3258 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/405 ,  C04B2235/42 ,  C04B2235/425 ,  C04B2235/52 ,  C04B2235/5292 ,  C04B2235/5436 ,  C04B2235/6586

Abstract: Systems and methods for making ceramic powders are provided. The method for forming a ceramic powder includes: preparing a precursor mixture, wherein the preparing comprises adding at least one additive to a plurality of reagents, wherein the at least one additive includes at least one of: an oxide, a salt, a pure metal, or an alloy of elements ranging from atomic numbers 21 through 30, 39 through 51, and 57 through 77 and combinations thereof; and carbothermically reacting the precursor mixture to form a ceramic powder, wherein, due to the preparing step, the precursor mixture comprises a sufficient amount of the at least one additive to form the ceramic powder, wherein the ceramic powder comprises: (a) a morphology selected from the group consisting of irregular, equiaxed, plate-like, and combinations thereof; and (b) a particle size distribution selected from the group consisting of fine, intermediate, coarse, and combinations thereof.

公开(公告)号：US20220112617A1

公开(公告)日：2022-04-14

申请号：US17556757

申请日：2021-12-20

Applicant: ALCOA USA CORP.

Inventor： Benjamin D. Mosser ,  Lance M. Sworts

IPC: C25C3/08 ,  C25C3/12 ,  C25C7/00

Abstract: In one embodiment, the disclosed subject matter relates to an electrolytic cell that has: a cell reservoir; a cathode support retained on a bottom of the cell reservoir, wherein the cathode support contacts at least one of: a metal pad and a molten electrolyte bath within the cell reservoir, wherein the cathode support includes: a body having a support bottom, which is configured to be in communication with the bottom of the electrolysis cell; and a support top, opposite the support bottom, having a cathode attachment area configured to retain a at least one cathode plate therein.

公开(公告)号：US20190127282A1

公开(公告)日：2019-05-02

申请号：US16228295

申请日：2018-12-20

Applicant: ALCOA USA CORP.

Inventor： James C. McMillen ,  Lance M. Sworts ,  Benjamin D. Mosser

IPC: C04B35/58 ,  C04B35/626 ,  C01B35/04

Abstract: Systems and methods for making ceramic powders are provided. The method for forming a ceramic powder includes: preparing a precursor mixture, wherein the preparing comprises adding at least one additive to a plurality of reagents, wherein the at least one additive includes at least one of: an oxide, a salt, a pure metal, or an alloy of elements ranging from atomic numbers 21 through 30, 39 through 51, and 57 through 77 and combinations thereof; and carbothermically reacting the precursor mixture to form a ceramic powder, wherein, due to the preparing step, the precursor mixture comprises a sufficient amount of the at least one additive to form the ceramic powder, wherein the ceramic powder comprises: (a) a morphology selected from the group consisting of irregular, equiaxed, plate-like, and combinations thereof; and (b) a particle size distribution selected from the group consisting of fine, intermediate, coarse, and combinations thereof.

公开(公告)号：US20190055660A1

公开(公告)日：2019-02-21

申请号：US16140276

申请日：2018-09-24

Applicant: Alcoa USA Corp.

Inventor： Douglas A. Weirauch ,  Lance M. Sworts ,  Brian J. Tielsch ,  Robert A. DiMilia

IPC: C25C3/08 ,  C04B35/64 ,  C04B35/58

Abstract: Compositions for making wettable cathodes to be used in aluminum electrolysis cells are disclosed. The compositions generally include titanium diboride (TiB2) and metal additives. The amount of selected metal additives may result in production of electrodes having a tailored density and/or porosity. The electrodes may be durable and used in aluminum electrolysis cells.