CN104032065A - Steelmaking composite slag - Google Patents
Steelmaking composite slag Download PDFInfo
- Publication number
- CN104032065A CN104032065A CN201410198953.3A CN201410198953A CN104032065A CN 104032065 A CN104032065 A CN 104032065A CN 201410198953 A CN201410198953 A CN 201410198953A CN 104032065 A CN104032065 A CN 104032065A
- Authority
- CN
- China
- Prior art keywords
- composite slag
- slag
- calcium oxide
- aluminium
- component
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A disclosed steelmaking composite slag comprises the following compositions in percent by weight: 55-65% of calcium oxide, 20-28% of aluminium oxide, 5-10% of silicon dioxide, 3-5% of carbon powder and 2-4% of aluminium powder. The composite slag is rapid for slag forming, strong in adsorption inclusion capability, and helps to shorten the refining time for steelmaking.
Description
Technical field
The present invention relates to a kind of steel-making composite slag.
Technical background
Converter slag-making is the key operation of converter steelmaking, and starting material P, the S content of heavy steel converter are higher, for effectively improving de-P in stove, de-S efficiency, must guarantee in process slag, have enough basicity, certain ingredients and quantity, the slag of active good, normal foamed.Changing in slag process, can produce nitric sulfid shell and hinder lime dissolving, impactization slag effect.
Summary of the invention
The technical problem that the present invention solves provides a kind of steel-making composite slag, and slagging is rapid, and it is strong that absorption is mingled with ability, shortens the refining time of steel-making.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of steel-making composite slag, comprises that the weight percent of following component and each component is: calcium oxide: 55～65%, aluminium sesquioxide: 20～28%, silicon-dioxide: 5～10%, carbon dust: 3～5%, aluminium powder: 2～4%.
Preferably, the weight percent of the each component of described composite slag is: calcium oxide: 55%, aluminium sesquioxide: 28%, silicon-dioxide: 10%, carbon dust: 4%, aluminium powder: 3%.
Preferably, the weight percent of the each component of described composite slag is: calcium oxide: 60%, aluminium sesquioxide: 28%, silicon-dioxide: 5%, carbon dust: 5%, aluminium powder: 2%.
Preferably, the weight percent of the each component of described composite slag is: calcium oxide: 65%, aluminium sesquioxide: 20%, silicon-dioxide: 8%, carbon dust: 3%, aluminium powder: 4%.
The present invention adopts aluminium sesquioxide to make nitric sulfid melting point depression, nitric sulfid form changes, and forms the aggregate state disperseing until disintegrate, and also makes the melting point depression of calcium oxide and silicon-dioxide simultaneously, significantly improve change slag effect, coordinate carbon dust as catalyzer, accelerate slagging reaction, aluminium powder makes molten steel further desulfurization in slagging course, its desulfurization degree is greater than 25%, slagging of the present invention is rapid, and it is strong that absorption is mingled with ability, shortens the refining time of steel-making.
Embodiment
The present invention makes steel composite slag, comprises that the weight percent of following component and each component is: calcium oxide: 55～65%, aluminium sesquioxide: 20～28%, silicon-dioxide: 5～10%, carbon dust: 3～5%, aluminium powder: 2～4%.
Embodiment 1: the weight percent of the each component of described composite slag is: calcium oxide: 55%, aluminium sesquioxide: 28%, silicon-dioxide: 10%, carbon dust: 4%, aluminium powder: 3%.
Embodiment 2: the weight percent of the each component of described composite slag is: calcium oxide: 60%, aluminium sesquioxide: 28%, silicon-dioxide: 5%, carbon dust: 5%, aluminium powder: 2%.
Embodiment 3: the weight percent of the each component of described composite slag is: calcium oxide: 65%, aluminium sesquioxide: 20%, silicon-dioxide: 8%, carbon dust: 3%, aluminium powder: 4%.
Claims (4)
1. a steel-making composite slag, is characterized in that: the weight percent that comprises following component and each component is: calcium oxide: 55～65%, aluminium sesquioxide: 20～28%, silicon-dioxide: 5～10%, carbon dust: 3～5%, aluminium powder: 2～4%.
2. steel-making composite slag according to claim 1, is characterized in that: the weight percent of the each component of described composite slag is: calcium oxide: 55%, aluminium sesquioxide: 28%, silicon-dioxide: 10%, carbon dust: 4%, aluminium powder: 3%.
3. steel-making composite slag according to claim 1, is characterized in that: the weight percent of the each component of described composite slag is: calcium oxide: 60%, aluminium sesquioxide: 28%, silicon-dioxide: 5%, carbon dust: 5%, aluminium powder: 2%.
4. steel-making composite slag according to claim 1, is characterized in that: the weight percent of the each component of described composite slag is: calcium oxide: 65%, aluminium sesquioxide: 20%, silicon-dioxide: 8%, carbon dust: 3%, aluminium powder: 4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410198953.3A CN104032065A (en) | 2014-05-10 | 2014-05-10 | Steelmaking composite slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410198953.3A CN104032065A (en) | 2014-05-10 | 2014-05-10 | Steelmaking composite slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104032065A true CN104032065A (en) | 2014-09-10 |
Family
ID=51463058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410198953.3A Pending CN104032065A (en) | 2014-05-10 | 2014-05-10 | Steelmaking composite slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104032065A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404194A (en) * | 2014-11-25 | 2015-03-11 | 芜湖新兴铸管有限责任公司 | Converter slag additive as well as preparation method and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405331A (en) * | 2002-11-01 | 2003-03-26 | 北京精诚致远科技发展有限公司 | Aluminium-calcium composite desulfurizing agent, and producing method and using method thereof |
| CN1789436A (en) * | 2004-12-08 | 2006-06-21 | 涟源钢铁集团有限公司 | Melting process of weather-resistant steel |
| CN1908197A (en) * | 2006-08-17 | 2007-02-07 | 刘星 | Vacuum refining agent and preparation method thereof |
| CN101503746A (en) * | 2009-03-19 | 2009-08-12 | 新余钢铁股份有限公司 | Method for producing boron steel by converter |
| CN101892342A (en) * | 2010-07-22 | 2010-11-24 | 新兴铸管股份有限公司 | Slagging method for converter |
-
2014
- 2014-05-10 CN CN201410198953.3A patent/CN104032065A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405331A (en) * | 2002-11-01 | 2003-03-26 | 北京精诚致远科技发展有限公司 | Aluminium-calcium composite desulfurizing agent, and producing method and using method thereof |
| CN1789436A (en) * | 2004-12-08 | 2006-06-21 | 涟源钢铁集团有限公司 | Melting process of weather-resistant steel |
| CN1908197A (en) * | 2006-08-17 | 2007-02-07 | 刘星 | Vacuum refining agent and preparation method thereof |
| CN101503746A (en) * | 2009-03-19 | 2009-08-12 | 新余钢铁股份有限公司 | Method for producing boron steel by converter |
| CN101892342A (en) * | 2010-07-22 | 2010-11-24 | 新兴铸管股份有限公司 | Slagging method for converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104404194A (en) * | 2014-11-25 | 2015-03-11 | 芜湖新兴铸管有限责任公司 | Converter slag additive as well as preparation method and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100564548C (en) | High-alkalinity refining slag for slag washing of converter steelmaking | |
| CN101343680A (en) | Metallurgy type refining slag special for ladle and manufacture method thereof | |
| WO2013134889A1 (en) | Process for producing low-cost clean steel | |
| CN104032060B (en) | A kind of method of desulfurizing iron | |
| RU2018121203A (en) | METHOD FOR PRODUCING MINERAL WOOL AND REMOVABLE IRON | |
| CN103060522A (en) | Slag forming agent for dephosphorization of medium-high-phosphorus semisteel and preparation method of slag forming agent | |
| CN104446021A (en) | Steel and iron slag micro-powder and production method thereof | |
| CN103103312B (en) | The sulfur method of semisteel desulfurizing agent and this sweetening agent of use | |
| CN101665858A (en) | Steel ladle slag modifier for external refining | |
| CN102517416A (en) | Efficient dephosphorizing agent based on refined steel ladle after-cast recovery slag for revolving furnace | |
| CN104611088A (en) | Fire coal desulfurization agent and preparation method thereof | |
| CN104060016A (en) | Method for converter smelting of weathering steel by using desulphurization slag and steel slag to substitute part of steel scrap | |
| CN104032065A (en) | Steelmaking composite slag | |
| CN102560131A (en) | Premelted refining slag and preparation method thereof | |
| CN100408702C (en) | Apex slag of ladle in use for refinement of vacuum decarburization in vacuum tank | |
| CN104032094A (en) | Desulfurization slag modifying agent and molten iron desulfurization method | |
| CN103014470B (en) | Method of using common rock ballast as slag-modifier agent for silicomanganese alloy smelting | |
| CN101353711A (en) | Carbonaceous material block molten iron bath reduction ironmaking desulphurization method | |
| CN102212651A (en) | Steel ladle powder injection desulfuration refining process for low-sulfur steel production | |
| CN102747191B (en) | Molten steel desulfurizer | |
| CN104109736A (en) | 304 stainless steel smelting method by AOD (argon oxygen decarburization) Converter | |
| CN103667583B (en) | A kind of preparation method using slag former that makes steel | |
| CN103805745A (en) | Liquid iron dephosphorization agent | |
| CN104032093B (en) | A kind of method of iron melt desulfurizing agent and desulfurizing iron | |
| CN103642992B (en) | Slag forming constituent for steelmaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140910 |