CN102059329A - Tundish covering agent - Google Patents
Tundish covering agent Download PDFInfo
- Publication number
- CN102059329A CN102059329A CN2009102197850A CN200910219785A CN102059329A CN 102059329 A CN102059329 A CN 102059329A CN 2009102197850 A CN2009102197850 A CN 2009102197850A CN 200910219785 A CN200910219785 A CN 200910219785A CN 102059329 A CN102059329 A CN 102059329A
- Authority
- CN
- China
- Prior art keywords
- percent
- steel
- tundish covering
- molten steel
- ladle
- 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
- Continuous Casting (AREA)
Abstract
The invention relates to a tundish covering agent, which is characterized by comprising the following chemical components in percentage by weight: 35 to 46 percent of CaO, 28 to 62 percent of SiO2, 3 to 6 percent of MgO, 9 to 21 percent of Al2O3, 0.3 to 1 percent of Fe2O3 and 0 to 18 percent of C. The tundish covering agent has the characteristics of high spreadability, heat insulation and preservation, high slag absorbing property, easy turning and the like, is quickly molten on the surface of molten steel to make the surface of the molten steel not leak red and slag blankets not crusted, can reduce heat loss and temperature reduction of liquid steel in a steel ladle, also has high capability of dissolving and absorbing impurities in the liquid steel, improves the purity of the liquid steel, reduces ladle opening slagging and is favorable for deslagging and improving the service life of the steel ladle.
Description
Technical field
The present invention relates to a kind of tundish covering flux, particularly relate to the granular tundish covering flux of a kind of environment-friendly type, is the improvement that existing tundish covering flux is formed, and belongs to the B22D11/111 technical field in the International Classification of Patents.
Background technology
The molten steel protection is one of modern steel-making row important step, plays an important role to improving steel quality and producing special steel.As storing and carrying the tundish of molten steel is capital equipment in the smelting process, so the molten steel protection is an important ring of molten steel overall process in the tundish, to avoiding secondary oxidation of steel, reduce temperature drop and improving the molten steel degree of purity direct relation is arranged all.
Early stage tundish molten steel protection mainly is meant molten steel protective agent (for example carbonization rice husk) or other effect solvent that the effect of adding is single, now can not satisfy the production needs of high-quality steel.Tundish covering flux develops to multi-functional, high efficiency direction gradually, and molten steel is played a protective role.
For example, publication number is the Chinese invention patent application " high basicity tundish covering flux " of CN1660520, its composition following (mass percent): calcium aluminate 70～90%, magnesia 0.1～20%, binding agent 0.1～10%, additive 0.1～5%, calcium carbonate 0～25%, quartz sand 0～5%; Wherein, described calcium aluminate is to be formed through high melt by 55～70% calcium carbonate and 30～45% bauxites; Described binding agent is dextrin, flour or waterglass; Various batchings are bonded together, and make it produce certain intensity; Described additive is phosphate, ligninsulfonate, citric acid, glycerine, naphthalene water reducer, water-soluble resin class water reducer or ethylene glycol.
Publication number is the Chinese invention patent application " a kind of carbon-free fritting hollow type alkalescence tundish covering flux " of CN1513624, it is characterized in that: be made of CaO45%-55%, MgO 9.5%-18.5%, Al following constituent and percentage by weight
2O
37.5%-16.5%, SiO
316%-24%, Fe
2O
30%-2%, fixed carbon 0%-0.1%.
The tundish covering flux that above technical scheme provides, though its component has nothing in common with each other, the secondary oxidation that can both accomplish to have certain heat-insulating property and prevent molten steel also can't satisfy the needs in market, along with development of science and technology, the better tundish covering flux of renewal of people's expectation occurs.
Summary of the invention
The objective of the invention is to overcome the prior art above shortcomings, composition at existing ladle covering agent continues to improve, provide a kind of brand-new environment-friendly type tundish covering flux, this tundish covering flux has that spreadability is good, adiabatic heat-insulation, slag absorbing are good, easily turn over characteristics such as bag.
The technical scheme that the present invention provides is: this tundish covering flux, be characterized in its chemical analysis by weight percentage be:
CaO 35-46，SiO
228-62，MgO 3-6，AL
2O
39-21，Fe
2O
30.3-1，C?0-18。
The molten point of this tundish covering flux that the present invention provides: 1200-1360 degree centigrade
The preparation technology of this tundish covering flux that the present invention provides is common preparation technology.
Compared with prior art, the invention has the beneficial effects as follows:
1. spreadability is good.Fusing has good spreadability soon on the molten steel face, and it is red that the molten steel face is not leaked, and slag blanket does not crust;
2. adiabatic heat-insulation.Reduce heat loss and the cooling of molten steel in ladle;
3. slag absorbing is good.Have the ability of field trash in good dissolving and the absorption molten steel, improve the molten steel degree of purity;
4. easily turn over bag.Reduce a bag mouthful slagging scorification, help deslagging and improve ladle service life.
The specific embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further.
Embodiment 1
The chemical analysis of the tundish covering flux that provides by the present invention is got 45 kilograms of CaO, SiO
234.5 kilogram, 4 kilograms of MgO, AL
2O
316 kilograms, Fe
2O
30.5 kilogram is mixed into 100 kilograms ladle covering agent, is finished product after moulding → drying → packing, covers molten steel surface during use, it is red that the molten steel face is not leaked, and slag blanket does not crust, and plays the effect of adiabatic heat-insulation.
Embodiment 2
The chemical analysis of the tundish covering flux that provides by the present invention is got 36 kilograms of CaO, SiO
240 kilograms, 3 kilograms of MgO, AL
2O
315 kilograms, Fe
2O
30.2 kilogram, 5.8 kilograms of C are mixed into 100 kilograms ladle covering agent, are finished product after moulding → drying → packing, cover molten steel surface during use, it is red that the molten steel face is not leaked, and slag blanket does not crust, and plays the effect of adiabatic heat-insulation.
Embodiment 3
The chemical analysis of the tundish covering flux that provides by the present invention is got 37 kilograms of CaO, SiO
228 kilograms, 6 kilograms of MgO, AL
2O
315 kilograms, Fe
2O
313 kilograms of 1 kilograms, C are mixed into 100 kilograms ladle covering agent, are finished product after moulding → drying → packing, cover molten steel surface during use, and it is red that the molten steel face is not leaked, and slag blanket does not crust, and plays the effect of adiabatic heat-insulation.
Claims (1)
1. tundish covering flux, the chemical analysis that it is characterized in that this tundish covering flux percentage by weight is:
CaO 35-46，SiO
2?28-62，MgO 3-6，AL
2O
39-21，Fe
2O
3?0.3-1，C0-18。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102197850A CN102059329A (en) | 2009-11-11 | 2009-11-11 | Tundish covering agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102197850A CN102059329A (en) | 2009-11-11 | 2009-11-11 | Tundish covering agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102059329A true CN102059329A (en) | 2011-05-18 |
Family
ID=43994937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102197850A Pending CN102059329A (en) | 2009-11-11 | 2009-11-11 | Tundish covering agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102059329A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233413A (en) * | 2011-06-27 | 2011-11-09 | 河南通宇冶材集团有限公司 | Ultra-pure steel corrosion-free type covering agent and production method thereof |
| CN103741008A (en) * | 2013-12-27 | 2014-04-23 | 青岛云路新能源科技有限公司 | Preparation method of iron-based nano-crystal alloy |
| CN106311998A (en) * | 2015-06-26 | 2017-01-11 | 鞍钢股份有限公司 | Preparation and use method of molten steel covering agent |
| CN106623831A (en) * | 2016-12-27 | 2017-05-10 | 华北理工大学 | Preparation method of high-iron-content continuous casting mold fluxes for laboratory |
| CN111363879A (en) * | 2018-12-25 | 2020-07-03 | 新疆八一钢铁股份有限公司 | Production control method for steelmaking continuous casting of high-strength automobile hub steel |
| CN115229146A (en) * | 2022-08-08 | 2022-10-25 | 山东莱钢永锋钢铁有限公司 | Method for improving alkalinity of steel slag in tundish of continuous casting machine |
-
2009
- 2009-11-11 CN CN2009102197850A patent/CN102059329A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233413A (en) * | 2011-06-27 | 2011-11-09 | 河南通宇冶材集团有限公司 | Ultra-pure steel corrosion-free type covering agent and production method thereof |
| CN102233413B (en) * | 2011-06-27 | 2013-08-07 | 河南通宇冶材集团有限公司 | Ultra-pure steel corrosion-free type covering agent and production method thereof |
| CN103741008A (en) * | 2013-12-27 | 2014-04-23 | 青岛云路新能源科技有限公司 | Preparation method of iron-based nano-crystal alloy |
| CN103741008B (en) * | 2013-12-27 | 2016-05-11 | 青岛云路先进材料技术有限公司 | A kind of preparation method of iron-base nanometer crystal alloy |
| CN106311998A (en) * | 2015-06-26 | 2017-01-11 | 鞍钢股份有限公司 | Preparation and use method of molten steel covering agent |
| CN106623831A (en) * | 2016-12-27 | 2017-05-10 | 华北理工大学 | Preparation method of high-iron-content continuous casting mold fluxes for laboratory |
| CN106623831B (en) * | 2016-12-27 | 2018-09-04 | 华北理工大学 | A kind of preparation method of use for laboratory high Fe content continuous casting covering slag |
| CN111363879A (en) * | 2018-12-25 | 2020-07-03 | 新疆八一钢铁股份有限公司 | Production control method for steelmaking continuous casting of high-strength automobile hub steel |
| CN115229146A (en) * | 2022-08-08 | 2022-10-25 | 山东莱钢永锋钢铁有限公司 | Method for improving alkalinity of steel slag in tundish of continuous casting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104226947B (en) | A kind of tundish covering flux used for ultra-low-carbon steel | |
| CN102059329A (en) | Tundish covering agent | |
| CN101787413B (en) | Granular heat-preserving covering flux for hot metal in steelmaking | |
| CN105562641B (en) | A kind of high manganese crystallizer casting powder for high-aluminum steel continuous casting and preparation method thereof | |
| CN103008918A (en) | Submerged-arc welding flux for high-strength steel with strength not smaller than 780MPa, manufacture method and welding wire | |
| CN103537636B (en) | There is the steel of sulfur phosphorus eliminating function, molten iron slag gathering heat insulating covering agent | |
| CN109487178A (en) | High-purity ultra-high manganese steel and its preparation process | |
| CN102581240B (en) | Tundish covering flux | |
| CN109579525A (en) | The system for preparing high-purity potassium steel | |
| CN109487037A (en) | 13 potassium steel of high-purity manganese | |
| CN102233412A (en) | Carbon-free steel ladle drainage agent for extremely-low carbon steel | |
| CN103086728A (en) | Explosion proofing castable for steel ladle working layer | |
| CN102259175B (en) | Production method for Ca-Al-Mg carbon-free tundish covering flux | |
| CN105734197B (en) | A kind of novel environment friendly synthesizes slag making materials | |
| CN102041355B (en) | Ladle slag modifier for stainless steel refining process | |
| CN109454210B (en) | Double-layer tundish covering agent for ultrathin belt | |
| CN104858381B (en) | A kind of new Aluminum steel Tundish Covering Flux for Continuous Casting and its application | |
| CN109487036A (en) | 18 potassium steel of high-purity manganese and preparation method thereof | |
| CN103480796A (en) | Magnesium and magnesium alloy ingot mold release agent and preparation method thereof | |
| CN103170592A (en) | Tundish covering agent prepared by using blast furnace slag | |
| CN106111928B (en) | It is a kind of novel containing Mn, Al steel covering slag and its application | |
| CN101733371B (en) | Function protective materials for oblong taperless steel ingots | |
| WO2009001663A1 (en) | Process for production of granular metallic iron | |
| CN103273028A (en) | Tundish covering agent and preparation and use method thereof | |
| CN103173592A (en) | Ladle covering agent prepared through utilizing blast furnace slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110518 |