JPS6447804A - Method for treating coal ash - Google Patents
Method for treating coal ashInfo
- Publication number
- JPS6447804A JPS6447804A JP20088087A JP20088087A JPS6447804A JP S6447804 A JPS6447804 A JP S6447804A JP 20088087 A JP20088087 A JP 20088087A JP 20088087 A JP20088087 A JP 20088087A JP S6447804 A JPS6447804 A JP S6447804A
- Authority
- JP
- Japan
- Prior art keywords
- blowing
- coal
- tuyere
- coal ash
- blast furnace
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
PURPOSE:To effectively use coal ash as resource by blowing coal ash powder together with powdery material for smelting from tuyere at the time of executing smelting reduction of ore containing metallic oxide in a shaft type reduction furnace provided with the tuyere for blowing powdery material. CONSTITUTION:In the blast furnace 1, iron ore and coke are charged from the furnace top part 2 and also blast furnace gas is discharged. Further, high temp. air and the powdery material are blown at the same time from the blasting tuyere 3 arranged at side wall part of lower part of the blast furnace and the produced pig iron and slag are discharged from tapping hole 4. Then, the coal is adjusted to a grain size and moisture suitable to blowing by a fine powdered coal producing equipment 5 and at the time of blowing it from the tuyere 3 by a fine powdered coal blowing equipment 6, the fine powdery coal ash is blown in the blast furnace 1 together with the fine powdered coal. By this method the coal ash is treated at low cost to make it the slag in the shaft type reduction furnace and it can be used for various purpose as smelting slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20088087A JPS6447804A (en) | 1987-08-13 | 1987-08-13 | Method for treating coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20088087A JPS6447804A (en) | 1987-08-13 | 1987-08-13 | Method for treating coal ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6447804A true JPS6447804A (en) | 1989-02-22 |
Family
ID=16431776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20088087A Pending JPS6447804A (en) | 1987-08-13 | 1987-08-13 | Method for treating coal ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6447804A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619946A (en) * | 2017-08-25 | 2018-01-23 | 鞍钢股份有限公司 | Comprehensive utilization method of blast furnace flue gas dedusting ash |
-
1987
- 1987-08-13 JP JP20088087A patent/JPS6447804A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619946A (en) * | 2017-08-25 | 2018-01-23 | 鞍钢股份有限公司 | Comprehensive utilization method of blast furnace flue gas dedusting ash |
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