JPS6436707A - Production of molten iron alloy - Google Patents
Production of molten iron alloyInfo
- Publication number
- JPS6436707A JPS6436707A JP19191587A JP19191587A JPS6436707A JP S6436707 A JPS6436707 A JP S6436707A JP 19191587 A JP19191587 A JP 19191587A JP 19191587 A JP19191587 A JP 19191587A JP S6436707 A JPS6436707 A JP S6436707A
- Authority
- JP
- Japan
- Prior art keywords
- iron ore
- powdery iron
- kiln
- reduction furnace
- smelting reduction
- 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
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
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 improve yield of raw material and to extend selecting range of carbonic material by specifying ratio of the carbonic material having the specific volatile matter and powdery iron ore to change in a rotary kiln in the production by using the rotary kiln and a top-bottom blowing type smelting reduction furnace. CONSTITUTION:As showing in the figure, the wet condition powdery iron ore and the coal having >=8% volatile matter are charged in the rotary kiln so as to become the carbonic (C conversion) wt./the powdery iron ore wt. >= 0.35 as the charging raw material ratio and successively charged into the smelting reduction furnace after pre-treating. In the kiln, the powdery iron ore, coal and flux are preheated and dried by exhaust gas generating in the smelting reduction furnace. Then, the powdery iron ore is coagulated and a part of this is reduced. Further, dust in the exhaust gas from the smelting reduction furnace is deposited in the kiln to help promotion of coagulation of the powdery iron ore. Further, by regulating the charging raw material ratio, ring in the inner wall of the kiln is difficult to develop at the time of growing the coagulation of the deposited dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19191587A JPS6436707A (en) | 1987-07-31 | 1987-07-31 | Production of molten iron alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19191587A JPS6436707A (en) | 1987-07-31 | 1987-07-31 | Production of molten iron alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6436707A true JPS6436707A (en) | 1989-02-07 |
Family
ID=16282560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19191587A Pending JPS6436707A (en) | 1987-07-31 | 1987-07-31 | Production of molten iron alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6436707A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6146441A (en) * | 1995-08-07 | 2000-11-14 | Technological Resources Pty Ltd | Reducing iron oxides in rotary hearth furnace |
-
1987
- 1987-07-31 JP JP19191587A patent/JPS6436707A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6146441A (en) * | 1995-08-07 | 2000-11-14 | Technological Resources Pty Ltd | Reducing iron oxides in rotary hearth furnace |
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