公开(公告)号：US20240278323A1

公开(公告)日：2024-08-22

申请号：US18571606

申请日：2022-06-22

Applicant: ArcelorMittal

Inventor： Benjamin BOISSIERE

IPC: B22F9/08

CPC classification number: B22F9/082 ,  B22F2009/0832 ,  B22F2009/0876 ,  B22F2009/0888 ,  B22F2009/0896 ,  B22F2998/10

Abstract: A process for manufacturing metal powders including: i) feeding an atomization chamber of a gas atomizer with molten metal, (ii) atomizing the molten metal by injection of gas so as to form metal particles, (iii) transferring the metal particles from the atomization chamber to a cooling chamber of the gas atomizer, (iv) cooling the metal particles in the cooling chamber by injecting gas from the bottom of the cooling chamber so as to form a bubbling fluidized bed of metal particles. A gas atomizer thereof is also provided.

公开(公告)号：US20210254190A1

公开(公告)日：2021-08-19

申请号：US17251107

申请日：2019-07-10

Applicant: ArcelorMittal

Inventor： Akshay BANSAL ,  Benjamin BOISSIERE ,  Gerard GRIFFAY

IPC: C21D9/00 ,  C21D1/62

Abstract: A method of cooling of a flat metal product having a broad face and a temperature upper to 400° C., wherein the metal product is put in contact with a fluidized bed of solid particles, the solid particles having a direction of circulation (D) and capturing the heat released by the metal product and transferring the captured heat to a transfer medium wherein the metal product is put in contact with the solid particles so that its broad face is parallel to the direction (D) of circulation of the solid particles, a thermal cooling path of the metal product is defined, considering the product parameters of the metal product, a gas is injected for fluidizing the solid particles in a bubbling regime, the injection flow rate of said gas being controlled to match the defined cooling path of the metal product.

公开(公告)号：US20250019784A1

公开(公告)日：2025-01-16

申请号：US18716320

申请日：2022-12-02

Applicant: ArcelorMittal

Inventor： Akshay BANSAL ,  Benjamin BOISSIERE ,  Gérard GRIFFAY

IPC: C21D1/53 ,  C21D8/02 ,  C21D9/00

Abstract: A method for heating a semi-finished steel product, including a pre-heating step, performed in a pre-heating device including a chamber containing solid particles, a heat exchanger, a support able to support the semi-finished steel product, a gas injector, and a heating step, performed in a furnace, wherein, the pre-heating step includes the steps of i. injecting a gas into the first chamber so as to form a first fluidized bed, ii. heating the fluidized bed by the heat exchanger, iii. putting the semi-finished steel product, into the fluidized bed and onto the support such the fluidized bed is able to transfer heat to the semi-finished steel product, iv. taking out the semi-finished steel product when its temperature is from 200° C. to 1000° C., and the heating step includes the step heating the semi-finished product to a temperature from 1100 to 1400° C.

公开(公告)号：US20240207932A1

公开(公告)日：2024-06-27

申请号：US18288300

申请日：2022-04-26

Applicant: ArcelorMittal

Inventor： Benjamin BOISSIERE

IPC: B22F9/08

CPC classification number: B22F9/082 ,  B22F2009/0848 ,  B22F2009/0876 ,  B22F2301/35 ,  B22F2998/10

Abstract: A process for manufacturing metal powders, including (i) feeding a chamber of a gas atomizer with molten metal, (ii) atomizing the molten metal by injection of gas so as to form metal particles, (iii) cooling the metal particles in the lower section of the chamber by injecting gas from the bottom of the chamber so as to form a bubbling fluidized bed of metal particles. The gas atomizer thereof is also provided.

公开(公告)号：US20240189906A1

公开(公告)日：2024-06-13

申请号：US18286599

申请日：2022-04-26

Applicant: ArcelorMittal

Inventor： Benjamin BOISSIERE

IPC: B22F9/08

CPC classification number: B22F9/082 ,  B22F2009/0876 ,  B22F2009/0896

Abstract: A process for manufacturing metal powders including (i) discharging metal particles from a chamber of a gas atomizer in a conveyor, (ii) simultaneously cooling and transporting the metal particles in the form of a fluidized bed formed in the conveyor. The invention also relates to the installation thereof.

公开(公告)号：US20220371859A1

公开(公告)日：2022-11-24

申请号：US17764307

申请日：2019-10-02

Applicant: ArcelorMittal

Inventor： Akshay BANSAL ,  Benjamin BOISSIERE ,  Gérard GRIFFAY ,  Pierre GEORGES

IPC: B66C1/44 ,  B66C13/08

Abstract: A system (1) for handling semi-finished metal products (5) including a gripper (3) suitable to grasp at least one semi-finished product (5) laid on a surface (40), a conveyor configured to lift the gripping means (3) from a low position towards a high position, and a tilter (2) configured to rotate the gripper (3) in their high position around a rotation axis (X-X′).

公开(公告)号：US20210222954A1

公开(公告)日：2021-07-22

申请号：US16972097

申请日：2019-07-10

Applicant: ArcelorMittal

Inventor： Akshay BANSAL ,  Benjamin BOISSIERE ,  Gérard GRIFFAY

IPC: F28C3/16 ,  B22D30/00 ,  F22B1/04 ,  F28F19/01 ,  F28F23/00

Abstract: A method of heat transfer wherein a flat metal product having a broad face and a temperature upper to 400° C. is put in contact with a fluidized bed of solid particles, the solid particles having a direction of circulation (D), wherein the flat metal product is put in contact with the solid particles so that its broad face is parallel to the direction (D) of circulation of the solid particles and wherein a gas is injected so that the solid particles be in a bubbling regime, the solid particles capturing the heat released by the metal product and transferring the captured heat to a transfer medium. An associated device is also provided.