JPS5665907A - Coal and tar mixed fuel for blowing into blast furnace - Google Patents
Coal and tar mixed fuel for blowing into blast furnaceInfo
- Publication number
- JPS5665907A JPS5665907A JP14153879A JP14153879A JPS5665907A JP S5665907 A JPS5665907 A JP S5665907A JP 14153879 A JP14153879 A JP 14153879A JP 14153879 A JP14153879 A JP 14153879A JP S5665907 A JPS5665907 A JP S5665907A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- pulverized coal
- desulfurizer
- blast furnace
- low
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
- C21B5/004—Injection of slurries
Abstract
PURPOSE:To stably produce molten iron of less sulfur contents under a low fuel ratio and high working efficiency by using a slurrylike fuel made by mixing pulverized coal and desulfurizer into coal tar in place of a heavy oil to be blown together with hot blast from tuyeres during blast furnace operation. CONSTITUTION:A slurry fuel mixed with pulverized coal, desulfurizer and coal tar is blown together with hot blast through tuyeres at the blast furnace operation. The pulverized coal of <=5mm. sizes is mixed at about <=65% as the concn. in the slurry, and the desulfurizer such as CaO, Na2CO3, CaCO3 or MgO is added at <=50wt% so as to become <=65wt% in the total of the mixing ratio with the pulverized coal. Since inexpensive coal tar and pulverized coal are used as raw materials without the need for heavy oil, the stable operation may be performed at a low cost. In addition, the desulfurizer is added and therefore the S content of the molten iron produced is low and the out-of-furnace desulfurization operations are decreased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14153879A JPS5665907A (en) | 1979-10-31 | 1979-10-31 | Coal and tar mixed fuel for blowing into blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14153879A JPS5665907A (en) | 1979-10-31 | 1979-10-31 | Coal and tar mixed fuel for blowing into blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5665907A true JPS5665907A (en) | 1981-06-04 |
Family
ID=15294290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14153879A Pending JPS5665907A (en) | 1979-10-31 | 1979-10-31 | Coal and tar mixed fuel for blowing into blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5665907A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6345312A (en) * | 1986-08-11 | 1988-02-26 | Sumitomo Metal Ind Ltd | Method for operating blast furnace |
| WO2013022372A1 (en) * | 2011-08-10 | 2013-02-14 | Общество С Ограниченной Ответственностью "Промышленные Инновационные Технологии Национальной Коксохимической Ассоциации" (Ооо "Проминтех Нка") | Blast-furnace smelting method |
-
1979
- 1979-10-31 JP JP14153879A patent/JPS5665907A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6345312A (en) * | 1986-08-11 | 1988-02-26 | Sumitomo Metal Ind Ltd | Method for operating blast furnace |
| WO2013022372A1 (en) * | 2011-08-10 | 2013-02-14 | Общество С Ограниченной Ответственностью "Промышленные Инновационные Технологии Национальной Коксохимической Ассоциации" (Ооо "Проминтех Нка") | Blast-furnace smelting method |
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