Device and method using infrared radiation to observe coal rock fracture development process
US-9964475-B2 · May 8, 2018 · US
Coal-to-coal adhesiveness evaluation method
US10802011B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10802011-B2 |
| Application number | US-201715715193-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 26, 2017 |
| Priority date | Mar 27, 2012 |
| Publication date | Oct 13, 2020 |
| Grant date | Oct 13, 2020 |
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Abstract
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In order to evaluate the compatibility of coals used in coke production and to produce cokes with desired strength by blending coals in consideration of the compatibility, the invention provides a technique which evaluates the adhesion strength obtained when two kinds of coals are carbonized based. on properties of the coals. Surface tensions of two kinds of semicokes obtained by heat treating two kinds of coals are measured. Based on the difference between the two measured values of surface tension, the quality of the adhesiveness between the two kinds of coals is evaluated.
First claim
Opening claim text (preview).
The invention claimed is: 1. A coal-to-coal adhesiveness evaluation method for evaluating an adhesiveness between first and second kinds of coals that are to be carbonized in contact with each other, the method comprising: evaluating the adhesiveness based on a difference between measured values of surface tension at room temperature of the first and second kinds of semicokes obtained by heat treating the two kinds of coals in a temperature range of between 350° C. and 800° C. and cooling to room temperature; and evaluating the coal-to-coal adhesiveness as poor when the difference between the two measured values of surface tension is 1.5 mN/m or more. 2. The coal-to-coal adhesiveness evaluation method according to claim 1 , wherein the surface tensions of the first and second kinds of semicokes are measured by a film flotation method.
Assignees
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Classifications
- G01N33/222Primary
Solid fuels, e.g. coal · CPC title
using charges of special composition · CPC title
methods of calculating surface tension · CPC title
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- What does patent US10802011B2 cover?
- In order to evaluate the compatibility of coals used in coke production and to produce cokes with desired strength by blending coals in consideration of the compatibility, the invention provides a technique which evaluates the adhesion strength obtained when two kinds of coals are carbonized based. on properties of the coals. Surface tensions of two kinds of semicokes obtained by heat treating …
- Who is the assignee on this patent?
- Jfe Steel Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N33/222. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 13 2020 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).