CN1955320A - Ladle refining slag - Google Patents
Ladle refining slag Download PDFInfo
- Publication number
- CN1955320A CN1955320A CNA2005100307063A CN200510030706A CN1955320A CN 1955320 A CN1955320 A CN 1955320A CN A2005100307063 A CNA2005100307063 A CN A2005100307063A CN 200510030706 A CN200510030706 A CN 200510030706A CN 1955320 A CN1955320 A CN 1955320A
- Authority
- CN
- China
- Prior art keywords
- slag
- lime
- melted aluminium
- calcium
- ladle refining
- 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
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
This invention relates to a ladle refining slag, it consists of lime, pre-melted aluminium and calcium slag, softly burnt dolomite; Its weight percent is: lime is 20-30%,pre-melted aluminium and calcium slag is 50-70%,softly burnt dolomite is 5-20%;Among them: particle size of the mentioned lime, pre-melted aluminium and calcium slag, softly burnt dolomite is between 5-30mm; Beneficial effect of this invention is: Slagging time only need 2 minutes, cut down 20 decibel of unpleasant noise on switch, lighten dust pollution produced when add material, cut down hydrogen content of liquid steel 0.5ppm, metallurgy effect that is used by steel factory is significant.
Description
Technical field
The present invention relates to field of steel-making, relate in particular to ladle furnace refining slag system in a kind of steelmaking process.
Background technology
At present, the refining slag system of steel mill's ladle furnace use is generally synthetic slag, be about to mix by a certain percentage after several mineral fragmentations, synthetic slag melts through heated by electrodes in ladle furnace, reach effects such as slag heat transfer conduction, secluding air, desulfurization, dross inclusion adsorption, but this synthesis type refining slag has following shortcoming: it is long 1, to change the slag time, generally needs about 5 minutes Zeitigung slags, and it is long very unfavorable for the continuous casting sequence casting to change the slag time, and often the company of causing waters and disconnects and disconnected watering; 2, this synthetic slag is because limy is more, and the shelf-time is short, perhaps owing to absorb water molten steel is increased hydrogen; 3, owing to synthetic slag fusing point height, it is long to change the slag time, and noise is big when causing energising; 4, this synthetic slag is because limy is more, and dust is big, and dust pollution is serious when reinforced.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of ladle refining slag, are intended to solve above-mentioned defective.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The present invention is made up of lime, pre-melted aluminium and calcium slag, light dolomite; Its weight percent is: lime 20～30%, pre-melted aluminium and calcium slag 50～70%, light dolomite 5～20%;
Described lime, pre-melted aluminium and calcium slag and light dolomite granularity are between 5～30mm.
Compared with prior art, the invention has the beneficial effects as follows: the change slag time only needs 2 minutes, reduces by 20 decibels of energising noises, alleviates dust pollution when feeding in raw material, reduction molten steel hydrogen richness 0.5ppm, and it is remarkable that steel mill uses metallurgical effect.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail:
Embodiment 1
Lime, pre-melted aluminium and calcium slag, light dolomite are crushed to 5～30mm, and press lime 20%, pre-melted aluminium and calcium slag 70% contains light dolomite 10%, and batch mixes gets final product.
Embodiment 2
Lime, pre-melted aluminium and calcium slag, light dolomite are crushed to 5～30mm, and press lime 30%, pre-melted aluminium and calcium slag 60% contains light dolomite 10%, and batch mixes gets final product.
Embodiment 3
Lime, pre-melted aluminium and calcium slag, light dolomite are crushed to 5～30mm, and press lime 30%, pre-melted aluminium and calcium slag 50% contains light dolomite 20%, and batch mixes gets final product.
Embodiment 4
Lime, pre-melted aluminium and calcium slag, light dolomite are crushed to 5～30mm, and press lime 30%, pre-melted aluminium and calcium slag 65% contains light dolomite 5%, and batch mixes gets final product.
The characteristics of pre-melted aluminium and calcium slag are that fusing point is low, and composition is even, and quality is close, and the hardness height is difficult for suction, can avoid or alleviate existing synthetic slag shortcoming.
Claims (6)
1. a ladle refining slag is made up of lime, pre-melted aluminium and calcium slag, light dolomite; Its weight percent is: lime 20～30%, pre-melted aluminium and calcium slag 50～70%, light dolomite 5～20%.
2. ladle refining slag according to claim 1, wherein: described lime, pre-melted aluminium and calcium slag and light dolomite granularity are between 5～30mm.
3. ladle refining slag according to claim 1 and 2, wherein: lime 20%, pre-melted aluminium and calcium slag 70%, light dolomite 10%.
4. ladle refining slag according to claim 1 and 2, wherein: lime 30%, pre-melted aluminium and calcium slag 60%, light dolomite 10%.
5. ladle refining slag according to claim 1 and 2, wherein: lime 30%, pre-melted aluminium and calcium slag 50%, light dolomite 20%.
6. ladle refining slag according to claim 1 and 2, wherein: lime 30%, pre-melted aluminium and calcium slag 65%, light dolomite 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100307063A CN1955320A (en) | 2005-10-25 | 2005-10-25 | Ladle refining slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100307063A CN1955320A (en) | 2005-10-25 | 2005-10-25 | Ladle refining slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1955320A true CN1955320A (en) | 2007-05-02 |
Family
ID=38062868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100307063A Pending CN1955320A (en) | 2005-10-25 | 2005-10-25 | Ladle refining slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1955320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010939A (en) * | 2010-12-30 | 2011-04-13 | 攀枝花钢城集团瑞钢工业有限公司 | Molten steel refining slags and application thereof |
-
2005
- 2005-10-25 CN CNA2005100307063A patent/CN1955320A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010939A (en) * | 2010-12-30 | 2011-04-13 | 攀枝花钢城集团瑞钢工业有限公司 | Molten steel refining slags and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070502 |