公开(公告)号：US10995014B1

公开(公告)日：2021-05-04

申请号：US17066769

申请日：2020-10-09

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 ,  C01G45/10 ,  C22B26/12 ,  H01M10/0525 ,  C22B7/00 ,  C22B3/00 ,  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：US20200041208A1

公开(公告)日：2020-02-06

申请号：US16499708

申请日：2018-01-22

Applicant: Hatch Ltd.

Inventor： Dong SHEN ,  Michael Morgan CAMPBELL ,  Steven Robert HAWTHORNE

IPC: F27D19/00 ,  F27D21/00 ,  F27D11/08 ,  H05B7/148

Abstract: A system measures parameters of the electricity drawn by an arc furnace and, based on an analysis of the parameters, provides indicators of whether arc coverage has been optimized. Factors related to optimization of arc coverage include electrode position, charge level, slag level and slag behaviour. More specifically, such indicators of whether arc coverage has been optimized may be used when determining a position for the electrode such that, to an extent possible, a stable arc cavity is maintained and an open arc condition is avoided. Conveniently, by avoiding open arc conditions, the internal linings of the furnace walls and roof may be protected from excessive wear and tear.

公开(公告)号：US20190165529A1

公开(公告)日：2019-05-30

申请号：US16321740

申请日：2017-07-26

Applicant: HATCH LTD.

Inventor： Dale Mackenzie PEAREN ,  Maciej JASTRZEBSKI ,  Bijan SHAHRIARI

IPC: H01R35/02 ,  C25C3/16 ,  H01M8/0202

Abstract: A flexible electrical connector assembly is adapted to connect a bus bar of an electrolytic cell to a collector bar of the electrolytic cell. The assembly includes an electrical connector including a plurality of conductive metal sheets, the electrical connector having a collector bar end and a bus bar end. The electrical connector may be adapted for being joined, at the collector bar end, to the collector bar and, at the bus bar end, to the bus bar. The electrical connector may be adapted to implement a change in direction, at a bend along a current-carrying path between the bus bar end and the collector bar end, the bend assisting to define the change in direction as greater than 90 degrees.

公开(公告)号：US20190131791A1

公开(公告)日：2019-05-02

申请号：US16176528

申请日：2018-10-31

Applicant: Hatch Ltd.

Inventor： Michael Morgan CAMPBELL ,  Yan ELKSNIS ,  Dong SHEN

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

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：US20180301907A1

公开(公告)日：2018-10-18

申请号：US15950746

申请日：2018-04-11

Applicant: HATCH LTD.

Inventor： Reza Iravani ,  Mohammad Sedighy ,  Tom Wai Lai Ma

IPC: H02J4/00 ,  H02J3/48 ,  H02J3/38 ,  H02J3/14 ,  H02J3/50

Abstract: Various distribution side controllers for power systems are disclosed. Power systems includes a power generation subsystem and one or more distribution networks. Power systems may also include a transmission system coupled between the power generation subsystem and the distribution networks. The distribution side controller monitors the operation and availability of power from distributed power sources coupled to its respective distribution network, as well as load demand from loads on the distribution network. The distribution side controller may also monitor conditions on the distribution network to identify a power imbalance within the distribution network. The distribution side controller responds to such imbalances to reduce their effect on the power system as a whole. In some embodiments, multiple distribution side controllers for various distribution networks may cooperate to provide efficient power generation for the whole power systems. In some embodiments, an AGC that controls the power generation subsystem also operates in coordination with one or more distribution side controllers.

公开(公告)号：US20180105895A1

公开(公告)日：2018-04-19

申请号：US15568896

申请日：2016-04-12

Applicant: HATCH LTD.

Inventor： KAMAL ADHAM ,  CHRISTOPHER THOMAS HARRIS ,  CHRISTOPHER FRANCIS MICHAEL TWIGGE-MOLECEY

IPC: C22B1/11 ,  C01G49/00 ,  B01J8/18

CPC classification number: C22B1/11 ,  A61B17/7098 ,  A61B17/8095 ,  A61B17/864 ,  A61B17/8645 ,  A61B17/866 ,  A61B2017/00884 ,  A61B2017/00893 ,  A61B2017/00955 ,  A61B2017/561 ,  B01J8/1827 ,  B01J8/1836 ,  B01J8/1845 ,  B01J2208/00752 ,  B01J2208/00893 ,  C01G49/009

Abstract: A process and reactor for arsenic fixation in which a first gas stream comprises oxygen and an iron-containing particulate material. The oxygen and particulate material may be fed to reactor through respective first and second inlets. A second gas stream containing one or more volatile arsenic compounds is fed through a third inlet and mixed with the first gas stream and the particulate material to produce a combined gas stream containing the volatile arsenic compounds and the particulate material. The arsenic compounds are reacted with iron in the particulate material as the combined gas stream flows through the reactor to produce solid iron arsenates which are then recovered. The portion of the reactor including the first, second and third inlets is vertically oriented, and the reactor may include a venturi arrangement having a throat at which the second inlet is located.

公开(公告)号：US20180067201A1

公开(公告)日：2018-03-08

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 ,  F27B3/28

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：US20180047124A1

公开(公告)日：2018-02-15

申请号：US15658840

申请日：2017-07-25

Applicant: HATCH LTD.

Inventor： Danielle Zyngier ,  Ludwig Furstenberg

IPC: G06Q50/28 ,  G06Q10/06

CPC classification number: G06Q50/28 ,  G06Q10/06314 ,  G06Q10/067

Abstract: A method and system for optimizing a train rail system. The method comprises creating a model of the rail system in a memory, creating an objective function in the memory, and determining, using a computer, a configuration of the rail system which optimizes the objective function for the process systems model. The model may be a process systems model. The aspect being optimized may be a train schedule for the rail system. The trains may be operated in accordance with the train schedule. The system comprises a computer and a memory. The memory stores a program configured to create in the memory the model, create the objective function, and determine the configuration of the rail system, using the computer, which optimizes the objective function for the model.

公开(公告)号：US09850138B2

公开(公告)日：2017-12-26

申请号：US14231351

申请日：2014-03-31

Applicant: Hatch Ltd.

Inventor： David R. Chinloy ,  Jianping Zhang ,  Evangelos Stamatiou

IPC: B01D1/24 ,  C01D3/08 ,  F24J2/04 ,  C01D3/06 ,  F28C3/06 ,  C02F1/22

CPC classification number: C01D3/08 ,  B01D1/24 ,  C01D3/06 ,  C02F1/22 ,  F24S10/10 ,  F24S10/13 ,  F28C3/06

Abstract: A pond for cooling and/or recovering salt from a hot aqueous solution of a salt such as potassium chloride produced by solution mining. The pond comprises a plurality of channels arranged side-by-side, each of the channels being defined by a plurality of sides. An inlet is provided in a side of a channel for receiving the aqueous solution, and an outlet is provided in a side of another one of the channels for discharging the aqueous solution. The pond has at least one dike separating the channels from one another. A gap is formed in each dike to permit the aqueous solution to flow between the channels, the gap having a length which is about 10 to about 40 percent of the length of the sides of the channels. Salt is crystallized and the solution is cooled as it passes through the channels of the pond.

公开(公告)号：US20170343145A1

公开(公告)日：2017-11-30

申请号：US15165582

申请日：2016-05-26

Applicant: Alter NRG Corp. ,  Hatch Ltd.

Inventor： Michael Trovant ,  Ian Edward Donohue

IPC: F16L43/00 ,  C10J3/82 ,  F16L59/18

CPC classification number: F16L43/00 ,  C10J3/82 ,  C10J2300/0916 ,  C10J2300/0946 ,  C10J2300/1238 ,  F16L59/18 ,  F16L59/22

Abstract: An exhaust elbow includes an inlet, an outlet, a curved gas guiding duct between the inlet and the outlet, and a plurality of thermally insulated stiffeners connected to an external surface of the curved gas guiding duct, each of the stiffeners including a metallic component and thermal insulation adjacent to at least a portion of a surface of the metallic element.