Method for manufacturing coke, coke, and method for evaluating homogeneity of coal blend
US10414986B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2015 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Oct 10, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for manufacturing coke having a high strength and excellent extrusion capability. The method includes a preparing step of blending two or more coal brands to prepare a coal blend, a stirring and mixing step of stirring and mixing the coal blend to disintegrate at least a part of pseudo-particles that have been formed by agglomeration of coal particles in the coal blend, and a carbonizing step of charging the stirred and mixed coal blend into a coke oven to carbonize the stirred and mixed coal blend. Additionally, a mixing apparatus is used in the stirring and mixing step that has a capability of controlling a degree of mixing of the coal blend to be 0.85 or more at 60 seconds after start of a mixing operation. The degree of mixing is calculated by the following equation (1): degree of mixing=(σC0−σC)/(σC0−σCf) (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.