JPS556415A - Operating method for vertical furnace - Google Patents
Operating method for vertical furnaceInfo
- Publication number
- JPS556415A JPS556415A JP7675478A JP7675478A JPS556415A JP S556415 A JPS556415 A JP S556415A JP 7675478 A JP7675478 A JP 7675478A JP 7675478 A JP7675478 A JP 7675478A JP S556415 A JPS556415 A JP S556415A
- Authority
- JP
- Japan
- Prior art keywords
- reducing gas
- furnace
- limestone
- vertical furnace
- manufacturing
- 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
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft 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 prevent the bridging due to the adhesion, by introducing the nonferrous oxide particle of limestone, etc., into the furnace, in case of manufacturing the sponge iron in the vertical furnace from pellets, etc., using the reducing gas. CONSTITUTION:The pellet or the iron ore of uniform size is reduced in the vertical furnace using the reducing gas for manufacturing the sponge iron. In this case, the reducing gas of 750-1100 deg.C is used for improving the producibility. Hereupon, on purpose to prevent the bridging following to the generation of clusters owing to the adhesiveness of raw material at above stated high temperature, the particle of size under 0.2mm of limestone, serpentine, etc., is charged from the top of the furnace, or is mixed into the reducing gas being blasted into the furnace; or both ways are simultaneously taken. The mixing rate of nonferrous oxide particles of limestone, etc., into the reducing gas as above stated, is desirable to be 1-50kg/m<3>.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7675478A JPS556415A (en) | 1978-06-24 | 1978-06-24 | Operating method for vertical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7675478A JPS556415A (en) | 1978-06-24 | 1978-06-24 | Operating method for vertical furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS556415A true JPS556415A (en) | 1980-01-17 |
Family
ID=13614370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7675478A Pending JPS556415A (en) | 1978-06-24 | 1978-06-24 | Operating method for vertical furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS556415A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0575146U (en) * | 1992-03-13 | 1993-10-12 | 株式会社タミヤ | Product packaging bag |
| US10370732B2 (en) * | 2016-04-12 | 2019-08-06 | Midrex Technologies, Inc. | Methods for mitigating the buildup of direct reduced iron clusters on the walls of a direct reduction furnace |
-
1978
- 1978-06-24 JP JP7675478A patent/JPS556415A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0575146U (en) * | 1992-03-13 | 1993-10-12 | 株式会社タミヤ | Product packaging bag |
| US10370732B2 (en) * | 2016-04-12 | 2019-08-06 | Midrex Technologies, Inc. | Methods for mitigating the buildup of direct reduced iron clusters on the walls of a direct reduction furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS52119403A (en) | Sintered pellets of iron ore and its production method | |
| JPS5579810A (en) | Operating method for blast furnace by mixed charge | |
| JPS537505A (en) | Operating process of blast furnace | |
| JPS556415A (en) | Operating method for vertical furnace | |
| SE8502922L (en) | PROCEDURE AND EQUIPMENT FOR CONTINUOUS PREPARATION | |
| JPS55125240A (en) | Sintering method for finely powdered starting material for iron manufacture | |
| US3705795A (en) | Process of directly reducing materials containing iron oxide in a rotary kiln | |
| JPS527813A (en) | Process for charging blast furnace with raw material | |
| US3097090A (en) | Metallurgical process | |
| JPS54117301A (en) | Coarse particles-containing self-fluxing ore pellets | |
| JP3510408B2 (en) | Method for producing coke for iron-containing metallurgy and iron-containing granulated product | |
| JPS552740A (en) | Continuous preheating or reducing method for raw material to be refined | |
| CN110724839A (en) | Preparation method of manganese-rich slag | |
| CN109504817A (en) | A kind of electric furnace foaming agent and production method | |
| NZ203437A (en) | Producing sponge iron by direct reduction of finegrained iron ores | |
| Serbent et al. | Large-Scale Test for the Treatment of BF Sludge and B. O. F. Dust According to Waelz Process.(Retroactive Coverage) | |
| JPS5518567A (en) | Fluidized bed type direct iron manufacture | |
| JPS56139631A (en) | Recovering method for iron source | |
| JPS5776148A (en) | Production of ferronickel | |
| JP2024010510A (en) | Nickel oxide ore smelting method | |
| JPS6447802A (en) | Blast furnace operating method | |
| JPS5591904A (en) | Discharging method for large lump in reducing rotary kiln | |
| JPS57188626A (en) | Manufacture of sintered ore | |
| JPS5358907A (en) | Raw material charging method in blast furnace | |
| JPS57140835A (en) | Enhancing method for gas permeability of starting material layer for sintering |