CN1209471C - Composite metallurgical refining agent - Google Patents

Composite metallurgical refining agent Download PDF

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Publication number
CN1209471C
CN1209471C CN 02113206 CN02113206A CN1209471C CN 1209471 C CN1209471 C CN 1209471C CN 02113206 CN02113206 CN 02113206 CN 02113206 A CN02113206 A CN 02113206A CN 1209471 C CN1209471 C CN 1209471C
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CN
China
Prior art keywords
refining
steel
slag
calcium
deoxidation
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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.)
Expired - Fee Related
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CN 02113206
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Chinese (zh)
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CN1375562A (en
Inventor
张炼
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张炼
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Publication date
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Priority to CN 02113206 priority Critical patent/CN1209471C/en
Publication of CN1375562A publication Critical patent/CN1375562A/en
Application granted granted Critical
Publication of CN1209471C publication Critical patent/CN1209471C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The present invention relates to a process for tapping and refining, which is an important section of modern steel making. The present invention has the technical scheme that specified substances are added in the process of tapping of oxidation liquid steel, and deoxidation, desulphurization and steel inclusion removal can be realized. The present invention is simultaneously favourable for increasing alloy yield; good tapping and refining section has great significance to lower secondary refining loads, improve steel quality and reduce production cost. The existing similar products have the main disadvantages of high cost, long refining period, low element utilization rate and incomplete inclusion removal. The present invention is characterized in that a composite metallurgical refining agent is prepared from 10 to 60% of deoxidation and desulphurization metal, 10 to 60% of solonetz metal oxide compound and 0.5 to 50% of slagging agent. The present invention has the advantages of low production cost, short refining period, good effect of deoxidation, desulphurization, inclusion removal and liquid steel purification, high internal quality of steel, etc.

Description

A kind of composite metallurgical refining agent
Technical field
The present invention relates to a kind of metallurgical refiner, definitely saying so relates to a kind of composite metallurgical refining agent.
Background technology
Going out steel refining is the important step of modern STEELMAKING PRODUCTION.In the tapping process of oxidisability molten steel, add predetermined substance, can realize the functions such as inclusion in deoxidation, desulfurization, the removal steel, also help the raising yield of alloy simultaneously.Do out the steel refining link well,, improve the inner quality of steel and reduce production costs significant for alleviating the external refining load.Tradition tapping additive mostly is the simple synthetic slag sweetening agent based on lime, fluorite.Because be that the high-melting-point pure substance carries out mechanically mixing and forms, the slagging speed of synthetic slag is slow, utilization ratio is low, and molten steel temperature drop is big, and effect is undesirable.Recently some producer uses multi-element composite deoxidant (Si-Al-Ba, Si-Ca-Ba etc.) or with the synthetic slag that contains a certain amount of calcium carbide, both are obtaining better effects aspect the pre-deoxidation of oxidisability molten steel, but the cost height.Existing refining agent, major part is to adopt the metallurgical waste slag to cooperate metallurgical fusing assistant and catalyzer to merge to form, but at trace element, especially the span of control of carbon increasing amount is also less, on industrial production such as ultralow this class steel grade of little carbon, also can not get comparatively ideal effect, thereby still be the industrial difficult problem to be solved that has so far.
Summary of the invention
The objective of the invention is to: provide a kind of and can shorten inclusion in smelting cycle, reduction steel-making cost, deoxidation, desulfurization, the removal molten steel, cleaning molten steel is effective, effectively improves the metallurgical refiner of steel internal soundness.
The objective of the invention is to realize by the enforcement following technical proposals:
A kind of composite metallurgical refining agent is characterized in that: contain
Silicocalcium+silico-calcium slag 30%~40%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca slag 20%~30%
Calcium carbide 15%
Wingdale 10%
Rare earth alloy and oxide compound 10%
Aluminium or fluorite 5%.
Composite metallurgical refining agent of the present invention prepares as follows:
This technology is made up of raw materials pretreatment, batching preparation, inspection after construction and packing of product technological process; Raw materials pretreatment by select materials, broken, drying process forms; The batching preparation is made up of batch mixes, fast uniform fusion operation.Details are as follows for its each operation content:
1, the operation of selecting materials: being mixed with the electrode slag in the raw material, artifact (as the waste material that produces in steel bar end, the first-class steel-making of refractory brick) is removed;
2, broken process: every kind of raw material crushing will choosing with crusher becomes 10~40mm particle;
3, drying process: with granularity is that the raw material of 10~40mm is put in the roaster and toasts, and removes most of moisture content, removes moisture content with drying machine again;
4, proportion mixed process: raw material is mixed by the prescription requirement;
5, fast uniform merges operation: by press the compound high pressure is suppressed.
Range of application of this product and method:
This product is used for the tapping back oxidisability molten steel is carried out the external refining processing.
Implementation step: melting → tapping → adding refining agent → cast (treating refining after having smart stove to finish, then cast).
The invention has the advantages that: smelting cycle is short, steel-making cost is low, the inclusion in the deoxidation, desulfurization, removal molten steel and make the internal soundness that inclusion modification is effective, cleaning molten steel has improved steel.
Description of drawings
The present invention has provided composite metallurgical refining agent product processes schema
Embodiment
Embodiment 1 composite metallurgical refining agent (I)
Component: silicon barium adds slag 65%
Calcium carbide 10%
Wingdale 15%
Aluminium 5%
Rare earth alloy and oxide compound 5%.
Each component is the solid particle of 10-40mm, and its meal is less than 10%.
Embodiment 2 composite metallurgical refining agents (II)
Component: Si-Ba alloy+silicon barium slag 45%
Calcium carbide 15%
Wingdale 10%
Aluminium 5%
Rare earth alloy and oxide compound 10%
Silicocalcium+silico-calcium slag 10%
Fluorite 50%.
Embodiment 3 composite metallurgical refining agents (III)
Component: Si-Ba alloy+silicon barium slag 20%
Silicocalcium+silico-calcium slag 40%
Calcium carbide 15%
Wingdale 10%
Aluminium 5%
Rare earth alloy and oxide compound 10%.
Embodiment 4 composite metallurgical refining agents (IV)
Component: silicocalcium+silico-calcium slag 30%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca slag 30%
Calcium carbide 15%
Wingdale 10%
Aluminium 5%
Rare earth alloy and oxide compound 10%
Embodiment 5 composite metallurgical refining agents (V)
Component: silicocalcium+silico-calcium slag 40%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca slag 20%
Calcium carbide 15%
Wingdale 10%
Fluorite 5%
Rare earth alloy and oxide compound 10%.
Embodiment 6 composite metallurgical refining agents (VI)
Component: silicocalcium+silico-calcium slag 50%
Calcium carbide 15%
Wingdale 5%
Magnesium+magnesium slag 20%.
Si-Ba alloy+silicon barium slag 10%
Embodiment 7 composite metallurgical refining agents (VII)
Component: Si-Ba alloy+silicon barium slag
Silicocalcium+silico-calcium slag 30%
Calcium carbide 15%
Aluminium 5%
Magnesium+magnesium slag 20%.
Embodiment 8 composite metallurgical refining agents (VIII)
Component: silicon-aluminium-barium alloy+sial barium slag 20%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca 40%
Calcium carbide 15%
Magnesium+magnesium slag 15%
Rare earth alloy and oxide compound 10%.
Embodiment 9 composite metallurgical refining agents (IX)
Component: Wingdale 60%
CaF 2 60%
Aluminium 60%
Calcium carbide 10%
CaSi 20%
Rare earth alloy or magnesium alloy 10%.

Claims (3)

1, a kind of composite metallurgical refining agent is characterized in that: contain
Silicocalcium+silico-calcium slag 30%~40%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca slag 20%~30%
Calcium carbide 15%
Wingdale 10%
Rare earth alloy and oxide compound 10%
Aluminium or fluorite 5%
2, according to the described composite metallurgical refining agent of claim 1, it is characterized in that: contain
Silicocalcium+silico-calcium slag 30%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca slag 30%
Calcium carbide 15%
Wingdale 10%
Rare earth alloy and oxide compound 10%
Aluminium 5%.
3, according to the described composite metallurgical refining agent of claim 1, it is characterized in that: contain
Silicocalcium+silico-calcium slag 40%
Silicon-aluminium-barium-calcium alloy+Si-Al-Ba-Ca slag 20%
Calcium carbide 15%
Wingdale 10%
Rare earth alloy and oxide compound 10%
Fluorite 5%.
CN 02113206 2002-01-07 2002-01-07 Composite metallurgical refining agent Expired - Fee Related CN1209471C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02113206 CN1209471C (en) 2002-01-07 2002-01-07 Composite metallurgical refining agent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 02113206 CN1209471C (en) 2002-01-07 2002-01-07 Composite metallurgical refining agent
CNB2004100830140A CN1318611C (en) 2002-01-07 2002-01-07 Composite refiner for metallurgy

Related Child Applications (1)

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CNB2004100830140A Division CN1318611C (en) 2002-01-07 2002-01-07 Composite refiner for metallurgy

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CN1375562A CN1375562A (en) 2002-10-23
CN1209471C true CN1209471C (en) 2005-07-06

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CNB2004100830140A Expired - Fee Related CN1318611C (en) 2002-01-07 2002-01-07 Composite refiner for metallurgy
CN 02113206 Expired - Fee Related CN1209471C (en) 2002-01-07 2002-01-07 Composite metallurgical refining agent

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100545268C (en) * 2006-11-10 2009-09-30 攀钢集团攀枝花钢铁研究院 Multifunctional composite refining agent for steel-smelting

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1318611C (en) * 2002-01-07 2007-05-30 张炼 Composite refiner for metallurgy
CN100393892C (en) * 2005-12-08 2008-06-11 中国铝业股份有限公司 Desulfur technology of phosphorus molten pig iron for precalcining anode pouring
CN101880747B (en) * 2009-05-06 2014-01-01 鞍钢股份有限公司 Clean steel production method for reducing molten steel total oxygen content
CN101993976B (en) * 2009-08-10 2013-09-04 鞍钢股份有限公司 Aluminium killed steel refined deoxidizing and desulfurizing synthetic slag
CN105624365B (en) * 2016-03-29 2017-08-11 马鞍山市兴达冶金新材料有限公司 A kind of alkaline earth oxide is combined molten steel refining agent and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1034959A (en) * 1988-12-20 1989-08-23 丹东市铁合金厂 Making process for si-ba alloy
CN1318611C (en) * 2002-01-07 2007-05-30 张炼 Composite refiner for metallurgy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100545268C (en) * 2006-11-10 2009-09-30 攀钢集团攀枝花钢铁研究院 Multifunctional composite refining agent for steel-smelting

Also Published As

Publication number Publication date
CN1614035A (en) 2005-05-11
CN1375562A (en) 2002-10-23
CN1318611C (en) 2007-05-30

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