CN1416979A - Double-layered alkali grain covering agent for middle ladle - Google Patents

Double-layered alkali grain covering agent for middle ladle Download PDF

Info

Publication number
CN1416979A
CN1416979A CN 01132125 CN01132125A CN1416979A CN 1416979 A CN1416979 A CN 1416979A CN 01132125 CN01132125 CN 01132125 CN 01132125 A CN01132125 A CN 01132125A CN 1416979 A CN1416979 A CN 1416979A
Authority
CN
China
Prior art keywords
slag
molten steel
covering agent
double
cao
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.)
Granted
Application number
CN 01132125
Other languages
Chinese (zh)
Other versions
CN1257783C (en
Inventor
王兆达
江浦琼
丁劲光
徐永斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI BAOYI THERMAL-INSULATION MATERIAL Co Ltd
Original Assignee
SHANGHAI BAOYI THERMAL-INSULATION MATERIAL Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SHANGHAI BAOYI THERMAL-INSULATION MATERIAL Co Ltd filed Critical SHANGHAI BAOYI THERMAL-INSULATION MATERIAL Co Ltd
Priority to CN 01132125 priority Critical patent/CN1257783C/en
Publication of CN1416979A publication Critical patent/CN1416979A/en
Application granted granted Critical
Publication of CN1257783C publication Critical patent/CN1257783C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The present invention relates to a double-layered alkali grain heat-insulting covering agent for middle ladle. The heat-insulting covering agent consists of top slag in 10-50 wt% and bottom slag in 50-90 wt%. The bottom slag consists of SiO2 8-15 wt%, CaO 50-60 wt%, MgO 10-20 wt%, Al2O3 1-5 wt%, Fe2O3 1-3 wt%, and fixed carbon 0.01-1 wt%. The top slag consists of SiO2 85-93 wt%, CaO 0.001-3 wt%, MgO 0.001-3 wt%, Al2O3 0.001-3 wt%, Fe2O3 0.003-0.5 wt%, and fixed carbon 0.01-1 wt%. The heat-insulting covering agent forms two layers of slag, the bottom layer covers molten steel to prevent secondary oxidation, reduce carbon content in molten steel and adsorb alumina floating to the surface of molten steel, and the top layer in porous and loose structure covers molten steel to prevent incrusting and carburization.

Description

The double-layered alkali grain tundish covering flux
Technical field
The present invention relates to a kind of alkali grain tundish thermal-insulating covering agent, particularly a kind of double-layered alkali grain tundish thermal-insulating covering agent.
Background technology
The alkaline molten steel tundish thermal-insulating covering agent that at home and abroad generally adopts must add charring rice husk thermal insulation at present, but because the charring rice husk carbon content up to becoming 30-50%, causes molten steel recarburization easily, also causes environmental pollution.
Summary of the invention
The objective of the invention is to overcome the alkaline molten steel tundish insulation of generally adopting in the prior art and cover, must add charring rice husk thermal insulation, cause molten steel recarburization easily, also cause environmental pollution problems.Technical solution of the present invention design double-layered alkali grain tundish thermal-insulating covering agent, it is characterized in that: thermal-insulating covering agent is made of end slag and top slag, the percentage by weight of end slag and top slag is: top slag 10%-50%, end slag 50-90%, (1) end slag is made of following composition and percentage by weight: SiO 28-15%, CaO 50-60%, MgO 10-20%, Al 2O 31-5%, Fe 2O 31-3%, fixed carbon 0.01-1%, (2) top slag is made of following composition and percentage by weight: SiO 285-93%, CaO 0.001-3%, MgO 0.001-3%, Al 2O 30.001-3%, Fe 2O 30.003-0.5%, fixed carbon 0.01-1%.Advantage of the present invention is to make the heat preserving agent of adding form two-layer slag up and down, the bottom slag covers the molten steel face, prevent the secondary oxidation of molten steel, reduce the content of carbon in the molten steel, the effect that can adsorb the aluminium oxide that floats in the molten steel is arranged, the upper strata slag can be loose porous spongy covering molten steel, prevents the molten steel crust, avoids carburetting.
The specific embodiment
Below in conjunction with embodiment the present invention is described in further detail,
Respectively the end slag and the top slag of thermal-insulating covering agent are prepared (1) end slag: get SiO 215 kilograms, 60 kilograms of CaO, 19 kilograms of MgO, Al 2O 35 kilograms, Fe 2O 30.5 kilogram, 0.5 kilogram in fixed carbon stirs into the mixture of double centner, and (2) top slag is got SiO 292.5 kilogram, 3 kilograms of CaO, MgO1.5 kilogram, Al 2O 32 kilograms, Fe 2O 30.5 kilogram, 0.5 kilogram in fixed carbon stirs into the mixture of double centner.Get 80 kilograms of end slags, 20 kilograms of top slags then, ladle in the middle of the disposable input, double-layered alkali grain molten steel tundish thermal-insulating covering agent forms double-deck slag at once, end slag melting point is low, form molten slag layer rapidly and cover the molten steel face, because lower oxyde content is low, can prevent secondary oxidation of steel, because fixedly phosphorus content is low, can be to molten steel recarburization, because covering MgO saturation value is low in the middle of the alkalescence, is lined with compatibility preferably with alkaline tundish, top slag melting point height, be spongy loose attitude heat-insulation layer, can improve the crust drawback, again because of fixed carbon content is low, the sorrow of no carburetting.

Claims (1)

  1. Double-layered alkali grain tundish thermal-insulating covering agent is characterized in that: thermal-insulating covering agent is made of end slag and top slag, and the percentage by weight of end slag and top slag is:
    Top slag 10%-50%, end slag 50-90%,
    (1) end slag is made of following composition and percentage by weight:
    SiO 2 8-15％，
    CaO 50-60％
    MgO 10-20％
    Al 2O 3 1-5％
    Fe 2O 3 1-3％
    Fixed carbon 0.01-1%,
    (2) the top slag is made of following composition and percentage by weight:
    SiO 2 85-93％，
    CaO 0.001-3％
    MgO 0.001-3％
    Al 2O 3 0.001-3％
    Fe 2O 3 0.003-0.5％
    Fixed carbon 0.01-1%.
CN 01132125 2001-11-06 2001-11-06 Double-layered alkali grain covering agent for middle ladle Expired - Fee Related CN1257783C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01132125 CN1257783C (en) 2001-11-06 2001-11-06 Double-layered alkali grain covering agent for middle ladle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01132125 CN1257783C (en) 2001-11-06 2001-11-06 Double-layered alkali grain covering agent for middle ladle

Publications (2)

Publication Number Publication Date
CN1416979A true CN1416979A (en) 2003-05-14
CN1257783C CN1257783C (en) 2006-05-31

Family

ID=4671168

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01132125 Expired - Fee Related CN1257783C (en) 2001-11-06 2001-11-06 Double-layered alkali grain covering agent for middle ladle

Country Status (1)

Country Link
CN (1) CN1257783C (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100446895C (en) * 2004-11-18 2008-12-31 上海宝谊保温材料有限公司 Cap agent with light alkaline particle steel coating
CN1803338B (en) * 2005-01-10 2010-08-04 上海盘龙实业有限公司 Environment-friendly type granular ladle covering agent containing carbon with double composite efficiency
CN101391287B (en) * 2007-09-22 2011-06-08 鞍钢股份有限公司 Method for controlling steel-slag performance in continuous-casting tundish
CN101486587B (en) * 2009-01-04 2012-03-21 攀钢集团研究院有限公司 Double-layer tundish covering agent
CN103111592A (en) * 2013-02-26 2013-05-22 莱芜钢铁集团有限公司 Tundish covering agent
CN104017937A (en) * 2013-03-02 2014-09-03 太原钢铁(集团)有限公司 Micro carbon alkaline particle covering agent and production method thereof
CN106180737A (en) * 2016-07-07 2016-12-07 四川朗峰电子材料有限公司 A kind of method preparing submicron metal
CN106890961A (en) * 2017-01-05 2017-06-27 北京首钢股份有限公司 A kind of low titanium bilayer coverture and its application method for silicon steel
CN107695311A (en) * 2016-08-08 2018-02-16 株式会社Posco Put into material and utilize its casting method
CN109454210A (en) * 2018-12-24 2019-03-12 江苏嘉耐高温材料有限公司 A kind of ultra-thin band double-layer tundish covering agent
CN114082910A (en) * 2021-11-25 2022-02-25 山东钢铁股份有限公司 Method for inhibiting water gap from being blocked

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100446895C (en) * 2004-11-18 2008-12-31 上海宝谊保温材料有限公司 Cap agent with light alkaline particle steel coating
CN1803338B (en) * 2005-01-10 2010-08-04 上海盘龙实业有限公司 Environment-friendly type granular ladle covering agent containing carbon with double composite efficiency
CN101391287B (en) * 2007-09-22 2011-06-08 鞍钢股份有限公司 Method for controlling steel-slag performance in continuous-casting tundish
CN101486587B (en) * 2009-01-04 2012-03-21 攀钢集团研究院有限公司 Double-layer tundish covering agent
CN103111592A (en) * 2013-02-26 2013-05-22 莱芜钢铁集团有限公司 Tundish covering agent
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
CN104017937A (en) * 2013-03-02 2014-09-03 太原钢铁(集团)有限公司 Micro carbon alkaline particle covering agent and production method thereof
CN106180737A (en) * 2016-07-07 2016-12-07 四川朗峰电子材料有限公司 A kind of method preparing submicron metal
CN107695311A (en) * 2016-08-08 2018-02-16 株式会社Posco Put into material and utilize its casting method
CN107695311B (en) * 2016-08-08 2020-05-05 株式会社Posco Input material and casting method using same
CN106890961A (en) * 2017-01-05 2017-06-27 北京首钢股份有限公司 A kind of low titanium bilayer coverture and its application method for silicon steel
CN106890961B (en) * 2017-01-05 2019-10-11 北京首钢股份有限公司 A kind of low titanium bilayer coverture and its application method for silicon steel
CN109454210A (en) * 2018-12-24 2019-03-12 江苏嘉耐高温材料有限公司 A kind of ultra-thin band double-layer tundish covering agent
CN114082910A (en) * 2021-11-25 2022-02-25 山东钢铁股份有限公司 Method for inhibiting water gap from being blocked

Also Published As

Publication number Publication date
CN1257783C (en) 2006-05-31

Similar Documents

Publication Publication Date Title
CN1416979A (en) Double-layered alkali grain covering agent for middle ladle
CN103537636B (en) There is the steel of sulfur phosphorus eliminating function, molten iron slag gathering heat insulating covering agent
CN101758176B (en) Double-layer tundish covering agent
CN102764879B (en) High-aluminum steel die casting protective slag
CN102233412B (en) Carbon-free steel ladle drainage agent for extremely-low carbon steel
CN100581683C (en) Preparation method of drainage agent for refining in three phases
CN100371105C (en) Molten steel covering agent and its preparation method
US5028257A (en) Metallurgical flux compositions
CN111644582B (en) Tundish covering agent for titanium-containing steel and preparation method and application thereof
CN109487037A (en) 13 potassium steel of high-purity manganese
CN1151901C (en) Alkaline granule steel ladle covering agent
CN106890961B (en) A kind of low titanium bilayer coverture and its application method for silicon steel
CN109454210B (en) Double-layer tundish covering agent for ultrathin belt
CN106424622A (en) Continuous casting mould powder for high-aluminium steel, and preparation method thereof
CN102041355B (en) Ladle slag modifier for stainless steel refining process
CN103111592B (en) Tundish covering agent
WO2012155330A1 (en) Agent for steelmaking made of aluminium-smelting scum
CN106041006A (en) Continuous casting tundish covering agent of Mn-containing and Al-containing steel and application thereof
CN104858381A (en) Novel aluminum steel continuous casting tundish covering agent and application thereof
CN116422847A (en) Low-reactivity continuous casting mold flux for rare earth steel with high rare earth content and preparation method thereof
CN114029462B (en) Rare earth oxide-containing continuous casting mold flux for high-titanium low-aluminum steel and preparation method thereof
CN101215620A (en) Micro-alloying refined synthetic slag and preparation method thereof
CN1778493A (en) Cap agent with light alkaline particle steel coating
CN1215086A (en) Agent for refining and heat-insulating of molten steel surface and its preparation process
US4147539A (en) Preparation of cupola flux

Legal Events

Date Code Title Description
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: 20060531

Termination date: 20091207