Method for producing hematite for ironmaking
US-10125025-B2 · Nov 13, 2018 · US
Method for manufacturing sintered ore
US2020040427A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020040427-A1 |
| Application number | US-201816490240-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 20, 2018 |
| Priority date | Apr 27, 2017 |
| Publication date | Feb 6, 2020 |
| Grant date | — |
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Abstract
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Uneven sintering is prevented in a sintering machine, and thus sintered ore having high strength and a high lump yield rate is manufactured. A method for manufacturing sintered ore comprising: charging sintering raw material comprising fine ore and carbon material on a circulatively moving pallet to form a raw material layer; igniting the carbon material on a surface of the raw material layer and sucking air from above the raw material layer down to below the palette so that the air is introduced into the raw material layer; and combusting the carbon material in the raw material layer to thereby manufacture sintered ore, wherein fuel gas is discharged from a nozzle at a flow speed of 40 Nm/s or more, the discharged fuel gas is combusted to generate combustion gas, and the combustion gas is used for the igniting the carbon material.
First claim
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1 . A method for manufacturing sintered ore comprising: charging sintering raw material comprising fine ore and carbon material on a circulatively moving pallet to form a raw material layer; igniting the carbon material on a surface of the raw material layer and sucking air from above the raw material layer down to below the palette so that the air is introduced into the raw material layer; and combusting the carbon material in the raw material layer to thereby manufacture sintered ore, wherein fuel gas is discharged from a nozzle at a flow speed of 40 Nm/s or more, the discharged fuel gas is combusted to generate combustion gas, and the combustion gas is used for the igniting the carbon material. 2 . The method for manufacturing sintered ore according to claim 1 , wherein the combustion gas is generated using a burner comprising: a main burner part having a fuel gas nozzle configured to discharge the fuel gas and an air nozzle configured to discharge air for combustion; and a sub burner part positioned further outward than the main burner part and configured to combust the fuel gas discharged from the main burner part.
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- What does patent US2020040427A1 cover?
- Uneven sintering is prevented in a sintering machine, and thus sintered ore having high strength and a high lump yield rate is manufactured. A method for manufacturing sintered ore comprising: charging sintering raw material comprising fine ore and carbon material on a circulatively moving pallet to form a raw material layer; igniting the carbon material on a surface of the raw material layer a…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C22B1/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Feb 06 2020 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).