公开(公告)号：US12145636B2

公开(公告)日：2024-11-19

申请号：US17917480

申请日：2021-04-09

Applicant: HATCH LTD.

Inventor： Patrick Henry McGinn ,  Mark James Mitchell ,  Matthew Douglas Brown ,  Matthew Gorczyca ,  Michael Morgan Campbell

IPC: B61K9/08 ,  B60M3/00 ,  B61D15/12 ,  B61L27/53 ,  G01R31/00 ,  G01R31/11 ,  G01R31/52 ,  G01R33/00 ,  G01R33/028 ,  G01R33/04 ,  G01R33/07 ,  G01R33/09

Abstract: A method, device, and system for detecting a current leak in a traction power rail. Magnetic or electrical properties of the rail are measured. The measurements are performed using a rail instrument that senses the properties around the rail at various times while the instrument is being moved down the rail, such as using a cart or train. The rail instrument may be a flux concentrator or open Rogowski coil. The locations of the rail, about which the readings are taken by the rail instrument, may be determined and correlated with the measurements themselves. The method may comprise measuring the magnetic field of the rail along a length of the rail, and identifying a leak based on differences between the magnetic field measurements. The system may comprise a cart comprising the rail instrument and a location instrument.

公开(公告)号：US20240376566A1

公开(公告)日：2024-11-14

申请号：US18554341

申请日：2022-04-12

Applicant: HATCH LTD.

Inventor： Brady Haneman ,  Cinziana Sist ,  Mark Eichhorn

IPC: C22B11/00 ,  C22B1/00 ,  C22B3/24 ,  C22B3/44

Abstract: A process for helping improve hydrometallurgical precious metal recovery from preg-robbing ores or concentrates, such as double refractory ores or concentrates or carbonaceous ores. The process comprises treating the ore or concentrate in the presence of oxygen at a temperature and pressure sufficient to oxidize at least a portion of the organic carbon material in the ore or concentrate. A vessel is used to treat the ore or concentrate to oxidize the organic carbon material. The vessel may be a pipe. The vessel maintains the ore at an elevated temperature and pressure in the presence of oxygen. The vessel may have an inlet for receiving a pre-treated slurry of ore or concentrate, a mechanism for oxygen addition, a mechanism for degassing the pipe reactor, and an outlet for providing the treated slurry to further processing. The vessel may be used in series after an autoclave. The pipe reactor may also include a pre-heating step and a cooling step.

公开(公告)号：US11873539B2

公开(公告)日：2024-01-16

申请号：US17977459

申请日：2022-10-31

Applicant: HATCH LTD.

Inventor： Robert John Fraser ,  Jacqueline Fossenier ,  Maryam Neisani ,  Louiza Kahina Harkouk ,  Amir Mohammad Nazari ,  Fangyu Liu

IPC: C22B23/06 ,  C22B3/00

CPC classification number: C22B23/06 ,  C22B23/043 ,  C22B23/0461

Abstract: Processes and methods for refining ferronickel alloy, and producing nickel sulfate or other nickel product, are provided, where the ferronickel alloy is treated with an oxidizing leach. The oxidizing leach may be, for example, a pressure oxidation (POX) leach or a leach with peroxide or copper (II) ions. The treatment may be in the presence of added copper, such as by providing a copper sulfate solution. Producing nickel sulfate may comprise removing copper and iron after the leach, removing impurities, and either crystallizing the nickel sulfate or precipitating/winning another nickel product.

公开(公告)号：US20220009793A1

公开(公告)日：2022-01-13

申请号：US17222264

申请日：2021-04-05

Applicant: Hatch Ltd. ,  Northvolt AB

Inventor： Robert John FRASER ,  Evangelos STAMATIOU ,  Mark Joseph MACHADO ,  Henry Christian Immo von SCHROETER ,  Mahmood ALEMRAJABI

IPC: C01G53/10 ,  C01G51/10 ,  H01M10/0525 ,  C22B26/12 ,  C22B3/00 ,  C01G45/10 ,  C22B7/00 ,  H01M10/54

Abstract: A process for generating a metal sulfate that involves crystallizing a metal sulfate from an aqueous solution to form a crystallized metal sulfate in a mother liquor with uncrystallized metal sulfate remaining in the mother liquor; separating the crystallized metal sulfate from the mother liquor; basifying a portion of the mother liquor to convert the uncrystallized metal sulfate to a basic metal salt; and using the basic metal salt upstream of crystallizing the metal sulfate. So crystallized, the generated metal sulfate may be battery-grade or electroplating-grade.

公开(公告)号：US11146067B2

公开(公告)日：2021-10-12

申请号：US16176528

申请日：2018-10-31

Applicant: Hatch Ltd.

Inventor： Michael Morgan Campbell ,  Yan Elksnis ,  Dong Shen

IPC: H05B7/148 ,  H02J3/18 ,  H03K17/72 ,  H05B7/18 ,  H02J3/00

Abstract: A configuration of switches added to a line control circuit allows for switching back and forth between a configuration featuring a series-connected thyristor switch and reactor and a configuration featuring a parallel-connected thyristor switch and reactor. Connecting the reactor in series with the thyristor switch allows a controlled high-impedance circuit configuration that is particularly well adapted for cold furnace start-ups and furnace idling. In this manner, there is reduced need for such equipment as extra startup transformers, alternate low-voltage power supply configurations and temporary specialty electrical apparatus for cold furnace start-ups.

公开(公告)号：US10705196B2

公开(公告)日：2020-07-07

申请号：US15812462

申请日：2017-11-14

Applicant: HATCH LTD.

Inventor： Matthew H. Cramer ,  Afshin Sadri ,  Jennifer Erskine ,  David Chataway ,  Bert O. Wasmund ,  Terry Gerritsen

IPC: G01S13/08 ,  G01F23/284 ,  G01S13/88 ,  F27D21/00 ,  F27B3/28 ,  F27B3/08

Abstract: A method for determining a length parameter of an electrode during operation of an electric arc furnace. An internal duct extends through the length of the electrode and is open at its lower end. A waveguide having a solid core is received in the internal duct and comprises a material having a low dielectric constant and high temperature resistance. The solid core of the waveguide includes at least one target. An electromagnetic radiation signal is emitted from a source and transmitted through the waveguide and the signal is diffracted and/or reflected from at least one target to produce at least one return signal which is transmitted back through the waveguide. A time or frequency difference between the emitted signal and the return signal is measured and the length parameter is calculated based on this difference.

公开(公告)号：US10527352B2

公开(公告)日：2020-01-07

申请号：US16058543

申请日：2018-08-08

Applicant: HATCH LTD.

Inventor： Dustin Alexander Vickress ,  Ian Archibald Cameron ,  David Henry Rudge ,  Andriy Ponomar ,  Volodymyr Ponomar ,  Maciej Urban Jastrzebski ,  John Andrew Ferguson Shaw

IPC: F27D1/00 ,  F27D1/06 ,  F27D1/08 ,  F27D1/12 ,  F27B1/24 ,  F27D9/00

Abstract: An abrasion-resistant material for the working face of a metallurgical furnace cooling element such as a stave cooler or a tuyere cooler having a body comprised of a first metal. The abrasion-resistant material comprises a macro-composite material including abrasion-resistant particles which are arranged in a substantially repeating, engineered configuration infiltrated with a matrix of a second metal, the particles having a hardness greater than that of the second metal. A cooling element for a metallurgical furnace has a body comprised of the first metal, the body having a facing layer comprising the abrasion-resistant material. A method comprises: positioning the engineered configuration of abrasion-resistant particles in a mold cavity, the engineered configuration located in an area of the mold cavity to define the facing layer; and introducing molten metal into the cavity, the molten metal comprising the first metal of the cooling element body.

公开(公告)号：US10408767B1

公开(公告)日：2019-09-10

申请号：US16007411

申请日：2018-06-13

Applicant: HATCH LTD.

Inventor： Owen Pearcey

IPC: G01B11/14 ,  G01N21/88 ,  G01N21/95

Abstract: A system and method for identifying imperfections in a reflective surface. The reflective surface may be a metal coating on a sheet such as in a galvanization process. The system comprises a laser detector. The laser detector may be part of a triangulation unit. The laser detector takes readings corresponding to the angles of travel of diffuse light of a laser off of different portions of the reflective surface. Imperfections in the surface are identified based on variance in the readings. The method comprises detecting diffuse light of a laser beam off of different portions of the reflective surface, and identifying imperfections based on variances in the angles of travel of the diffuse light detected.

公开(公告)号：US20170362725A1

公开(公告)日：2017-12-21

申请号：US15528357

申请日：2015-11-20

Applicant: HATCH LTD.

Inventor： MACIEJ URBAN JASTRZEBSKI ,  JOHN ANDREW FERGUSON SHAW ,  DALE PEAREN ,  BERT O. WASMUND ,  DANIEL RICHARD

IPC: C25C3/10

CPC classification number: C25C3/10

Abstract: An aluminum reduction cell having a shell structure with a pair of longitudinally extending sidewalls, a pair of transversely extending endwalls, a bottom wall, and an open top having an upper edge. The aluminum reduction cell also has a transverse support structure with transverse bottom beams located under the shell structure and extending transversely between the sidewalls, each of the transverse bottom beams having a pair of opposed ends. The aluminium reduction cell also has compliant binding elements fixed to the transverse support structure, each extending vertically along an outer surface of one of the sidewalls for applying an inwardly directed force said sidewall. The compliant binding elements are in the form of cantilever springs. Each spring has a metal member with a lower end which is secured to the transverse support structure, and a compliant, upper free end which is movable inwardly and outwardly in response to expansion and contraction of the shell structure.

公开(公告)号：US20170362680A1

公开(公告)日：2017-12-21

申请号：US15537708

申请日：2015-12-14

Applicant: HATCH LTD.

Inventor： Sina MOSTAGHEL ,  Matthew H. CRAMER ,  Santiago FAUCHER ,  Lai Chi SO ,  Johannes NELL

IPC: C22B7/04 ,  C22B7/00 ,  C04B5/00 ,  B03C1/02 ,  B22F9/08 ,  C01B13/16 ,  C01G55/00 ,  G01N33/20 ,  C01B13/34

CPC classification number: C22B7/04 ,  B03C1/02 ,  B03C2201/20 ,  B22F9/082 ,  B22F2009/0824 ,  C01B13/16 ,  C01B13/34 ,  C01G55/004 ,  C01P2006/80 ,  C04B5/00 ,  C22B7/005 ,  G01N33/20 ,  Y02P10/212

Abstract: A method for recovering metal values from a molten slag composition includes atomizing the slag with an oxygen-containing gas in a gas atomization apparatus, to produce solid slag granules. Oxygen in the atomizing gas converts metals to magnetic metal compounds, thereby magnetizing the metal-containing slag granules. These metal-containing slag granules are then magnetically separated. Larger amounts of metals may be removed by passing the molten slag through a pre-settling pan with an adjustable base, and/or discontinuing atomization where the metal content of the slag exceeds a predetermined amount. Solid slag granules produced by atomization may be charged to a recovery unit for recovery of one or more metal by-products. An apparatus for recovering metal values from molten slag includes a gas atomization apparatus, a flow control device for controlling the flow of atomizing gas, a control system, and one or more sensors to detect metal values in the slag.