JPS57152412A - Slag minimum refining method by limestone - Google Patents
Slag minimum refining method by limestoneInfo
- Publication number
- JPS57152412A JPS57152412A JP3764381A JP3764381A JPS57152412A JP S57152412 A JPS57152412 A JP S57152412A JP 3764381 A JP3764381 A JP 3764381A JP 3764381 A JP3764381 A JP 3764381A JP S57152412 A JPS57152412 A JP S57152412A
- Authority
- JP
- Japan
- Prior art keywords
- refining
- molten iron
- limestone
- agent
- energy
- 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
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To reduce the cost of auxiliary materials and energy considerably through titled refining in the stage of subjecting molten iron of low Si to de-P and de-C refining with an oxygen steel making furnace, by supplying granular carbonaceous materials by gravity falling and adding limestone as a de-P agent. CONSTITUTION:Molten iron is pretreated to accelerate only the de-Si reaction beforehand, and the resultant molten iron of low Si is subjected to de-P and de-C refining with an oxygen steel making furnace. In this case granular carbonaceous materials are added from above by utilizing energy of gravity falling into said furnace, and the quicklime to be added as a de-P agent is substituted with limestone in refining the molten iron. According to this method, a smaller amt. of the de-P agent to be fed is required and slag volume is reduced drastically, and this results in that the molten iron receives slag minimum refining. In this method, the cost of auxiliary materials is much reduced and energy is saved considerably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3764381A JPS57152412A (en) | 1981-03-16 | 1981-03-16 | Slag minimum refining method by limestone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3764381A JPS57152412A (en) | 1981-03-16 | 1981-03-16 | Slag minimum refining method by limestone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57152412A true JPS57152412A (en) | 1982-09-20 |
Family
ID=12503325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3764381A Pending JPS57152412A (en) | 1981-03-16 | 1981-03-16 | Slag minimum refining method by limestone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57152412A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766723A (en) * | 2012-06-29 | 2012-11-07 | 石家庄钢铁有限责任公司 | Limestone slagging steelmaking lance position control method for basic oxygen furnaces |
| CN102766724A (en) * | 2012-07-12 | 2012-11-07 | 东北大学 | Method adopting oxygen lance to jet granulated powder limestone to make slag and steel in combined blown converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5353504A (en) * | 1976-10-26 | 1978-05-16 | Nippon Steel Corp | Noncombustin type recovering method for exhaust gas in pure oxygentop-blown converter |
-
1981
- 1981-03-16 JP JP3764381A patent/JPS57152412A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5353504A (en) * | 1976-10-26 | 1978-05-16 | Nippon Steel Corp | Noncombustin type recovering method for exhaust gas in pure oxygentop-blown converter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766723A (en) * | 2012-06-29 | 2012-11-07 | 石家庄钢铁有限责任公司 | Limestone slagging steelmaking lance position control method for basic oxygen furnaces |
| CN102766724A (en) * | 2012-07-12 | 2012-11-07 | 东北大学 | Method adopting oxygen lance to jet granulated powder limestone to make slag and steel in combined blown converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU5748996A (en) | Process for producing foundry iron | |
| EP1114194A4 (en) | A direct smelting process and apparatus | |
| ZA854681B (en) | Process and device for the production of steel from scrap iron | |
| JPS57152412A (en) | Slag minimum refining method by limestone | |
| GB1447690A (en) | Process for regenerating or producing steel from steel scrap or reduced iron | |
| FR2400559A1 (en) | Continuous heating of molten iron obtd. from scrap - in shaft furnace leading to steel-making converter fed with oxygen | |
| ES8206369A1 (en) | Production of gas in a ferrous- bath-reactor | |
| US2790712A (en) | Process for refining iron | |
| JPS5343019A (en) | Refining method for steel with reduced slag formation | |
| ES409323A1 (en) | Method of obtaining low-phosphorus contents in medium-and high-carbon steels in a bottom-blown oxygen steelmaking furnace | |
| GB1087027A (en) | Process for the production of iron or steel from ores in a furnace | |
| JPS52108312A (en) | Steel making with converter | |
| AU554340B2 (en) | Increasing the proportion of cold charge in the production of top blown steel | |
| JPS56123310A (en) | Integrated steel making method | |
| JPS538310A (en) | Reusing method of steel making slag | |
| Fedorovich et al. | A New Stage in the Development of Converter Steel-Melting Technology | |
| JPS55107715A (en) | Blowing method of dephosphorizer to bottom blowing converter | |
| JPS5644705A (en) | Direct reducing method of ore in converter | |
| JPS558457A (en) | Oxygen bottom blasting converter | |
| SU1313879A1 (en) | Method for melting steel | |
| JPS5469514A (en) | Decarburization method in vacuum furnace | |
| von Bogdandy et al. | 35 years LD developments, results and prospects of oxygen steelmaking | |
| JPS5754214A (en) | Method of refining low-si molten pig iron with slag minimized | |
| Reboul | Prerefining of Hematite Pig Iron. I. II | |
| Fenne | The Use of Powder Injection for Desulphurization in Electric Arc Furnaces |