JPS57133185A - Production of modified coal - Google Patents
Production of modified coalInfo
- Publication number
- JPS57133185A JPS57133185A JP1890881A JP1890881A JPS57133185A JP S57133185 A JPS57133185 A JP S57133185A JP 1890881 A JP1890881 A JP 1890881A JP 1890881 A JP1890881 A JP 1890881A JP S57133185 A JPS57133185 A JP S57133185A
- Authority
- JP
- Japan
- Prior art keywords
- csn
- volatility
- coal
- heating
- bituminous coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Coke Industry (AREA)
Abstract
PURPOSE: A specific high-volatility, non or little bituminous coal is modified to coal suitable for making metallurgy coke by heating it in an specific oxygen atmosphere at specified temperature, followed by second heating under different conditions.
CONSTITUTION: A high-volatility, non or little bituminous coal with a crucible swelling number (CSN) exceeding 1 is subjected to the primary heating under less than 1.5% oxygen concentration so that CSN is made to less than 1. Then, the secondary heating is conducted under less than 1.5% oxygen concentration at 450-550°C to make the bulk density more than 580kg/m3. Thus, the high-volatility, non or little bituminous coal with CSN of over 1, showing almost no fluidity, is modified to a coal suitable for making metallurgy coke.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1890881A JPS6039314B2 (en) | 1981-02-13 | 1981-02-13 | Method for producing modified coal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1890881A JPS6039314B2 (en) | 1981-02-13 | 1981-02-13 | Method for producing modified coal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57133185A true JPS57133185A (en) | 1982-08-17 |
JPS6039314B2 JPS6039314B2 (en) | 1985-09-05 |
Family
ID=11984692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1890881A Expired JPS6039314B2 (en) | 1981-02-13 | 1981-02-13 | Method for producing modified coal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6039314B2 (en) |
-
1981
- 1981-02-13 JP JP1890881A patent/JPS6039314B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6039314B2 (en) | 1985-09-05 |
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