CN100446895C - Cap agent with light alkaline particle steel coating - Google Patents
Cap agent with light alkaline particle steel coating Download PDFInfo
- Publication number
- CN100446895C CN100446895C CNB2004100843367A CN200410084336A CN100446895C CN 100446895 C CN100446895 C CN 100446895C CN B2004100843367 A CNB2004100843367 A CN B2004100843367A CN 200410084336 A CN200410084336 A CN 200410084336A CN 100446895 C CN100446895 C CN 100446895C
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- China
- Prior art keywords
- present
- percent
- ladle
- fixed carbon
- steel
- Prior art date
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Classifications
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- 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
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- Treatment Of Steel In Its Molten State (AREA)
- Ceramic Products (AREA)
Abstract
The present invention relates to light alkaline particle steel ladle coating agent. The present inventio is characterized in that the present invention is composed of the following compositions and weight percentages: 18 to 26 percent of Si O < 2 >, 26 to 34 percent of Ca O, 6 to 12 percent of Mg O, 5 to 8 percent of AI < 2 > O < 3 >, 0.5 to 2 percent of Fe < 2 > O < 3 > and 18 to 26 percent of fixed carbon. The bulk density is from 0.4 to 0.7g/cm < 3 >. The present invention has the advantages that the present invention has good heat preservation performance because the bulk density of the coating agent is small, the heat loss of molten steel can be further remedied by utilizing heat which is generated by chemical reaction of fixed carbon because the present contains high fixed carbon content, and the heat preservation effect is improved. The present invention has proper melting point, and a three-layer melting structure can be quickly formed. The present invention has low reduction oxide content, and secondary oxidation of the molten steel can be avoided. The alkalinity of the present invention is Ca O/Si O < 2 > 1.1 to 1.8, and the present invention has a certain capability of absorbing impurity in the molten steel. Steel ladle alkaline refractory material can not be eroded, and the ladle age of the steel ladle is favorable to be prolonged.
Description
Technical field
The present invention relates to a kind of ladle covering agent, particularly a kind of cap agent with light alkaline particle steel coating.
Background technology
The basic steel covering agent bulk density that adopts both at home and abroad is bigger at present, though have the performance of certain dross inclusion adsorption, heat insulation effect is not good.Though have a heat-insulating property preferably and acid chrome black covering agent bulk density is less, cause secondary oxidation of steel easily, and acid coverture can cause erosion to the anti-material of alkaline ladle.
Summary of the invention
The purpose of this invention is to provide a kind of alkaline granule steel ladle covering agent that reducible oxide-based composition content is low, bulk density is little that has.The present invention designs a kind of cap agent with light alkaline particle steel coating, it is characterized in that having following constituent and percentage by weight to constitute: SiO
222%～25%, CaO 31%～33%, and MgO 10%～11%, Al
2O
37%～7.5%, Fe
2O
31%～1.5%, fixed carbon 25%～26%.Bulk density is 0.4～0.7g/cm
3Advantage of the present invention is: the bulk density of coverture is little, has good heat-insulating property; And containing higher fixed carbon, the heat that can utilize its chemical reaction to produce further remedies the heat loss of molten steel, improves heat insulation effect; Fusing point is suitable, can form three layers of melting structure rapidly, and reducible oxide-based composition content is low, can prevent secondary oxidation of steel; Basicity CaO/SiO
21.1～1.8, have field trash ability in certain absorption molten steel, can not corrode the ladle basic refractory, help prolonging the bag age of ladle.
The specific embodiment
Below in conjunction with embodiment the present invention is elaborated:
Embodiment 1: get SiO
225 kilograms, 31 kilograms of CaO, 10 kilograms of MgO, Al
2O
37.5 kilogram, Fe
2O
31.5 kilogram, 25 kilograms in fixed carbon.Be mixed into 100 kilograms of mixtures, add suitable quantity of water and mix thoroughly and be baked to moisture less than 1% after making the particle of Φ 8～10mm * 8～25mm by extruder grain, packing again after the screening.
Embodiment 2: get SiO
222 kilograms, 33 kilograms of CaO, 11 kilograms of MgO, Al
2O
37 kilograms, Fe
2O
31 kilogram, 26 kilograms in fixed carbon.Be mixed into 100 kilograms of mixtures, add suitable quantity of water and mix thoroughly and be baked to moisture less than 1% after making the particle of Φ 8～10mm * 8～25mm by extruder grain, packing again after the screening.This coverture forms three-decker rapidly after adding ladle during use.Because the bulk density of coverture is little, has good heat-insulating property; And contain higher fixed carbon, and utilize the heat of its chemical reaction generation, can further remedy the heat loss of molten steel, improve heat insulation effect; Because reducible oxide-based composition content is low, can prevent secondary oxidation of steel; Because coverture is an alkalescence, can not corrode the ladle basic refractory, helps prolonging the bag age of ladle.
Claims (2)
1, a kind of cap agent with light alkaline particle steel coating is characterized in that having following constituent and percentage by weight to constitute:
SiO
2 22％～25％，
CaO 31％～33％，
MgO 10％～11％，
Al
2O
3?7％～7.5％，
Fe
2O
3?1％～1.5％，
Fixed carbon 25%～26%.
2, by the described a kind of cap agent with light alkaline particle steel coating of claim 1, it is characterized in that: the bulk density of cap agent with light alkaline particle steel coating is 0.4～0.7g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100843367A CN100446895C (en) | 2004-11-18 | 2004-11-18 | Cap agent with light alkaline particle steel coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100843367A CN100446895C (en) | 2004-11-18 | 2004-11-18 | Cap agent with light alkaline particle steel coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1778493A CN1778493A (en) | 2006-05-31 |
| CN100446895C true CN100446895C (en) | 2008-12-31 |
Family
ID=36769025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100843367A Expired - Fee Related CN100446895C (en) | 2004-11-18 | 2004-11-18 | Cap agent with light alkaline particle steel coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100446895C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371105C (en) * | 2006-08-25 | 2008-02-27 | 重庆大学 | A kind of molten steel covering agent and preparation method thereof |
| CN101892332B (en) * | 2010-07-05 | 2012-05-09 | 北京科技大学 | A slag energy-saving thermal insulation agent |
| CN102643955B (en) * | 2012-05-11 | 2013-07-17 | 西峡县兴宝冶金保温耐材有限公司 | Method for producing iron ladle or steel ladle rare residue heat preservation agent by using coal gangue |
| CN104017937B (en) * | 2013-03-02 | 2015-10-28 | 太原钢铁(集团)有限公司 | A kind of micro-carbon alkali grain insulating covering agent and production method thereof |
| CN105328150A (en) * | 2015-11-18 | 2016-02-17 | 武汉钢铁(集团)公司 | Heating type particulate molten steel thermal insulation agent and preparation method thereof |
| TWI664297B (en) * | 2018-10-26 | 2019-07-01 | 中國鋼鐵股份有限公司 | Thermal insulation covering agent for molten steel and manufacturing method thereof |
| CN112570676B (en) * | 2020-11-12 | 2022-04-22 | 安阳钢铁股份有限公司 | Method for producing high-carbon steel by double-flow slab continuous casting machine |
| CN115229146A (en) * | 2022-08-08 | 2022-10-25 | 山东莱钢永锋钢铁有限公司 | A method for improving the basicity of steel slag in a continuous casting machine tundish |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3926246A (en) * | 1972-09-18 | 1975-12-16 | Scm Corp | Flux for continuous casting of steel |
| JPS55141514A (en) * | 1979-04-19 | 1980-11-05 | Koji Uchida | Molten steel surface covering agent utilizing chiefly slag produced at refining of mg and a |
| JPS566762A (en) * | 1979-06-30 | 1981-01-23 | Nippon Steel Corp | Granule type powder for continuous casting of steel |
| JPS57202950A (en) * | 1981-06-06 | 1982-12-13 | Nippon Steel Corp | Mold additive for continuous casting |
| CN2476337Y (en) * | 2001-04-10 | 2002-02-13 | 上海宝谊保温材料有限公司 | Hollow cylindrical granular steel cladding cover agent |
| CN1371772A (en) * | 2001-02-23 | 2002-10-02 | 上海宝谊保温材料有限公司 | Alkaline granule steel ladle covering agent |
| CN1416979A (en) * | 2001-11-06 | 2003-05-14 | 上海宝谊保温材料有限公司 | Double-layered alkali grain covering agent for middle ladle |
| CN1513624A (en) * | 2002-12-31 | 2004-07-21 | 上海宝谊保温材料有限公司 | Carbonless prremelt hollow type alkali pouring basket covering agent |
-
2004
- 2004-11-18 CN CNB2004100843367A patent/CN100446895C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3926246A (en) * | 1972-09-18 | 1975-12-16 | Scm Corp | Flux for continuous casting of steel |
| JPS55141514A (en) * | 1979-04-19 | 1980-11-05 | Koji Uchida | Molten steel surface covering agent utilizing chiefly slag produced at refining of mg and a |
| JPS566762A (en) * | 1979-06-30 | 1981-01-23 | Nippon Steel Corp | Granule type powder for continuous casting of steel |
| JPS57202950A (en) * | 1981-06-06 | 1982-12-13 | Nippon Steel Corp | Mold additive for continuous casting |
| CN1371772A (en) * | 2001-02-23 | 2002-10-02 | 上海宝谊保温材料有限公司 | Alkaline granule steel ladle covering agent |
| CN2476337Y (en) * | 2001-04-10 | 2002-02-13 | 上海宝谊保温材料有限公司 | Hollow cylindrical granular steel cladding cover agent |
| CN1416979A (en) * | 2001-11-06 | 2003-05-14 | 上海宝谊保温材料有限公司 | Double-layered alkali grain covering agent for middle ladle |
| CN1513624A (en) * | 2002-12-31 | 2004-07-21 | 上海宝谊保温材料有限公司 | Carbonless prremelt hollow type alkali pouring basket covering agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1778493A (en) | 2006-05-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20091218 |