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US-2024343978-A1 · Oct 17, 2024 · US
Method for producing ferrocoke
US11111441B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11111441-B2 |
| Application number | US-201615737567-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 13, 2016 |
| Priority date | Jun 24, 2015 |
| Publication date | Sep 7, 2021 |
| Grant date | Sep 7, 2021 |
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Abstract
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A method for producing ferrocoke in which it is possible to use a cheap and poor-quality coal having a high ash content while suppressing the decrease of the strength in ferrocoke or formed coke and a special coal mixing is not performed with respect to the fusion frequently causing problems in the carbonization with the shaft furnace. In a method for producing ferrocoke by molding and carbonizing a mixture of coal and iron ore, the coal is a single coal or a mixture of plural coals and a non-caking or slight caking coal having a load average value of ash content of not less than 10.7% and a load average value of mean maximum reflectance of not less than 0.81% is used.
First claim
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The invention claimed is: 1. A method for producing ferrocoke comprising molding and carbonizing a mixture of coal and iron ore, wherein the coal is (i) a single coal having a load average value of ash content of not less than 10.7% and a load average value of mean maximum reflectance of not less than 0.81%, or (ii) a mixture of plural coals and a non-caking or slight caking coal, the mixture having a load average value of ash content of not less than 10.7% and a load average value of mean maximum reflectance of not less than 0.81%. 2. The method for producing ferrocoke according to claim 1 , wherein molding of the mixture of coal and iron ore includes compression molding conducted at a density of not less than 1400 kg/m 3 .
Assignees
Inventors
Classifications
Conditions of the cokes or characterised by the cokes used · CPC title
- C10B57/06Primary
containing additives · CPC title
Devices for producing compact unified coal charges outside the oven (briquetting presses B30B) · CPC title
- C10B53/08Primary
in the form of briquettes, lumps and the like · CPC title
using charges of special composition · CPC title
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- What does patent US11111441B2 cover?
- A method for producing ferrocoke in which it is possible to use a cheap and poor-quality coal having a high ash content while suppressing the decrease of the strength in ferrocoke or formed coke and a special coal mixing is not performed with respect to the fusion frequently causing problems in the carbonization with the shaft furnace. In a method for producing ferrocoke by molding and carboniz…
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification C10B57/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 07 2021 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).