Method for smelting saprolite ore
US-10301704-B2 · May 28, 2019 · US
Method for producing agglomerated raw material
US2024425942A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024425942-A1 |
| Application number | US-202218693762-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 11, 2022 |
| Priority date | Sep 29, 2021 |
| Publication date | Dec 26, 2024 |
| Grant date | — |
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Abstract
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A method for producing an agglomerated raw material includes pressing and heating a raw material containing iron oxide having a particle size smaller than a preset particle size, thereby agglomerating the raw material. The raw material contains the iron oxide in an amount of more than 50% by mass, and the raw material is heated by electrical heating.
First claim
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1 . A method for producing an agglomerated raw material, comprising pressing and heating a raw material containing iron oxide having a particle size smaller than a preset particle size, thereby agglomerating the raw material, wherein the raw material contains the iron oxide in an amount of more than 50% by mass, and wherein the raw material is heated by electrical heating. 2 . The method for producing an agglomerated raw material according to claim 1 , wherein the raw material contains 10% by mass or more of a metal which deforms plastically during the pressing and heating. 3 . The method for producing an agglomerated raw material according to claim 2 , wherein the raw material is agglomerated by heating it at 700° C. or more while pressing it at 20 MPa or more. 4 . The method for producing an agglomerated raw material according to claim 2 , wherein the metal has an electrical conductivity of 11×10 6 S/m or more. 5 . A method for producing an agglomerated raw material, comprising pressing and heating a raw material containing iron oxide having a particle size smaller than a preset particle size, thereby agglomerating the raw material, wherein the raw material contains the iron oxide in an amount of more than 50% by mass, and wherein a pressure at which the raw material is pressed and a temperature at which the raw material is heated satisfy the following inequality (1): P ≥ 40 - ( T - 900 ) / 10 ( 1 ) where P is the pressure (MPa), and T is the temperature (° C.). 6 . A method for producing an agglomerated raw material, comprising pressing and heating a raw material containing iron oxide having a particle size smaller than a preset particle size, thereby agglomerating the raw material, wherein the raw material contains the iron oxide in an amount of more than 50% by mass, and wherein when the heating of the raw material is electrical heating, a pressure at which the raw material is pressed and a temperature at which the raw material is heated satisfy the following inequality (2): P ≥ 40 - ( T - 700 ) / 10 ( 2 ) where P is the pressure (MPa), and T is the temperature (° C.). 7 . The method for producing an agglomerated raw material according to claim 1 , wherein the raw material contains 10% by mass or more of a metal which deforms plastically during the pressing and heating and has an electrical conductivity of 11×10 6 S/m or more, and wherein a pressure at which the raw material is pressed and a temperature at which the raw material is heated satisfy the following inequality (3): P ≥ 40 - ( T - 500 ) / 10 ( 3 ) where P is the pressure (MPa), and T is the temperature (° C.). 8 . The method for producing an agglomerated raw material according to claim 3 , wherein the metal has an electrical conductivity of 11×10 6 S/m or more.
Assignees
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Classifications
Composition or distribution of the charge · CPC title
- C21B13/0046Primary
making metallised agglomerates or iron oxide · CPC title
in electric furnaces · CPC title
in shaft furnaces · CPC title
Heating or cooling presses or parts thereof · CPC title
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- What does patent US2024425942A1 cover?
- A method for producing an agglomerated raw material includes pressing and heating a raw material containing iron oxide having a particle size smaller than a preset particle size, thereby agglomerating the raw material. The raw material contains the iron oxide in an amount of more than 50% by mass, and the raw material is heated by electrical heating.
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C21B13/0046. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 26 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).