Method of operating a sinter plant
US-11549159-B2 · Jan 10, 2023 · US
Method of producing sintered ore
US9574251B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9574251-B2 |
| Application number | US-201214405908-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 20, 2012 |
| Priority date | Jun 13, 2012 |
| Publication date | Feb 21, 2017 |
| Grant date | Feb 21, 2017 |
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Abstract
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A method of producing a sintered ore includes charging a sintering raw material containing a powder ore and a carbonaceous material onto a circulatory moving pallet to form a charged layer, igniting the carbonaceous material on a surface of the charged layer, introducing air above the charged layer containing a gaseous fuel diluted to not more than a lower limit of combustion concentration with wind boxes arranged below the pallet into the charged layer by suction, and combusting the gaseous fuel and the carbonaceous material in the charged layer, wherein more than 50% of a total supply of the gaseous fuel is supplied in a front ½ portion of a region supplying the gaseous fuel.
First claim
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The invention claimed is: 1. A method of producing a sintered ore comprising: charging a sintering raw material containing a powder ore and a carbonaceous material onto a circulatory moving pallet to form a charged layer, igniting the carbonaceous material on a surface of the charged layer, introducing air above the charged layer containing a gaseous fuel diluted to not more than a lower limit of combustion concentration with wind boxes arranged below the pallet into the charged layer by suction, and combusting the gaseous fuel and the carbonaceous material in the charged layer, wherein the region supplying the gaseous fuel is a region wherein a high-temperature keeping time kept at not lower than 1200° C. but not higher than 1380° C. is less than 150 seconds when the area is sintered by combustion heat of only the carbonaceous material, and wherein more than 50% of a total supply of the gaseous fuel is supplied in a front ⅓ portion of a region supplying the gaseous fuel. 2. The method according to claim 1 , wherein the region supplying the gaseous fuel is not more than 40% of a machine length ranging from an ignition furnace to an ore removing portion. 3. The method according to claim 2 , wherein the concentration of the gaseous fuel contained in air introduced in the charged layer is not more than the lower limit of combustion concentration. 4. The method according to claim 1 , wherein the concentration of the gaseous fuel contained in air introduced in the charged layer is not more than the lower limit of combustion concentration.
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- What does patent US9574251B2 cover?
- A method of producing a sintered ore includes charging a sintering raw material containing a powder ore and a carbonaceous material onto a circulatory moving pallet to form a charged layer, igniting the carbonaceous material on a surface of the charged layer, introducing air above the charged layer containing a gaseous fuel diluted to not more than a lower limit of combustion concentration with…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C22B1/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 21 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).