CN101301679B - 管线钢冶炼专用中包覆盖剂 - Google Patents

管线钢冶炼专用中包覆盖剂 Download PDF

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CN101301679B
CN101301679B CN2008101147987A CN200810114798A CN101301679B CN 101301679 B CN101301679 B CN 101301679B CN 2008101147987 A CN2008101147987 A CN 2008101147987A CN 200810114798 A CN200810114798 A CN 200810114798A CN 101301679 B CN101301679 B CN 101301679B
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covering agent
tundish covering
pipeline steel
steel
carbon
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CN101301679A (zh
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王臻明
许晓东
朱志远
王文军
杨建平
孙硕猛
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Shougang Group Co Ltd
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Shougang Corp
Qinhuangdao Shouqin Metal Materials Co Ltd
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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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  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

一种管线钢冶炼专用中包覆盖剂，属于炼钢连铸技术领域。覆盖剂组成质量百分数为C：4～6％，CaO：20～40％，MgO：7～9％，SiO：213～17％，NaO：5～7％，Al 2O 3：18～20％，余量为FeT微量，KO微量。本发明的优点在于，低碳高碱度中间包覆盖剂保证了连铸增碳在0.005％以下，甚至不增碳，且有效降低了钢水中夹杂物含量。

Description

管线钢冶炼专用中包覆盖剂 
技术领域
本发明属于炼钢连铸技术领域，特别是提供了一种管线钢冶炼专用中包覆盖剂，专用的低碳高碱度中包覆盖剂，适用于管线钢浇铸时防止钢水增碳及二次氧化。 
背景技术
管线钢中碳含量较低，对夹杂物要求也比较严格。整个冶炼工序中，只有转炉承担脱碳任务，因此对于低碳钢的冶炼，转炉后各工序要做好防止增碳的工作，以减轻转炉脱碳压力。另外，冶炼低碳钢时钢水氧化性较强，钢种夹杂物较多，要充分去除夹杂物，需要炉渣、保护渣等吸附夹杂物能力更强。首秦管线钢开发过程中，出现连铸增碳达到0.01％～0.02％以及夹杂物超标的现象，为了保证管线钢成品中碳及夹杂物含量达到合格水平，因此开发出连铸时中间包用低碳高碱度覆盖剂。 
发明内容
本发明的目的在于提供一种管线钢冶炼专用中包覆盖剂，解决了碳及夹杂物超标的问题。 
本发明的低碳高碱度中间包覆盖剂组成质量百分数为C：4～6％，CaO：20～40％，MgO：7～9％，SiO2：13～17％，Na2O：5～7％，Al2O3：18～20％，余量为TFe：微量，K2O：微量。 
本发明大优点在于，低碳高碱度中间包覆盖剂保证了连铸增碳在0.005％以下，甚至不增碳，且有效降低了钢水中夹杂物含量。 
具体实施方式
严格控制管线钢浇铸时中包覆盖剂的成分，每包钢水消耗覆盖剂30kg～40kg，在未加套管或套管未浸入钢液面时严禁向中包冲击区加入覆盖剂。以下是某次实际生产数据： 
Figure S2008101147987D00021
中包覆盖剂单位重量5kg/袋，成份：C：5％，CaO：38％，MgO：9％，SiO2：16％，，NaO：7％，Al2O3：20％，FeT、KO：3％。 

Claims (1)

1.一种管线钢冶炼专用中包覆盖剂，其特征在于，覆盖剂组成质量百分数为C：4～6％，CaO：20～40％，MgO：7～9％，SiO2：13～17％，Na2O：5～7％，Al2O3：18～20％，余量为TFe和K2O：3％。
CN2008101147987A 2008-06-12 2008-06-12 管线钢冶炼专用中包覆盖剂 Active CN101301679B (zh)

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Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
CN102233413B (zh) * 2011-06-27 2013-08-07 河南通宇冶材集团有限公司 一种超纯净钢无侵蚀型覆盖剂及其生产方法
CN104017937B (zh) * 2013-03-02 2015-10-28 太原钢铁(集团)有限公司 一种微碳碱性颗粒覆盖剂及其生产方法
CN103341606B (zh) * 2013-07-03 2015-02-11 北京科技大学 一种可用于中间包的高镁质覆盖剂材料及其制备方法
CN105127385A (zh) * 2015-09-06 2015-12-09 南京钢铁股份有限公司 一种中包覆盖剂用合成渣
CN108330379A (zh) * 2017-09-22 2018-07-27 新疆八钢铁股份有限公司 石油天然气管线用钢l485(x70)的生产方法

Citations (4)

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US3899324A (en) * 1973-03-16 1975-08-12 Scm Corp Flux for continuous casting of steel
US4290809A (en) * 1980-08-06 1981-09-22 Mobay Chemical Corporation Raw mix flux for continuous casting of steel
US6516870B1 (en) * 2000-05-15 2003-02-11 National Steel Corporation Tundish fluxing process
CN1911558A (zh) * 2006-08-25 2007-02-14 重庆大学 一种钢水覆盖剂及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899324A (en) * 1973-03-16 1975-08-12 Scm Corp Flux for continuous casting of steel
US4290809A (en) * 1980-08-06 1981-09-22 Mobay Chemical Corporation Raw mix flux for continuous casting of steel
US6516870B1 (en) * 2000-05-15 2003-02-11 National Steel Corporation Tundish fluxing process
CN1911558A (zh) * 2006-08-25 2007-02-14 重庆大学 一种钢水覆盖剂及其制备方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP特开平9-76049A 1997.03.25
肖玉光等.超低碳钢中间包覆盖剂的冶金效果试验.《材料与冶金学报》.2005,第4卷(第1期),10-12. *

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