CN102559996A - New silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking and preparation technology thereof - Google Patents

New silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking and preparation technology thereof Download PDF

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Publication number
CN102559996A
CN102559996A CN2011104562339A CN201110456233A CN102559996A CN 102559996 A CN102559996 A CN 102559996A CN 2011104562339 A CN2011104562339 A CN 2011104562339A CN 201110456233 A CN201110456233 A CN 201110456233A CN 102559996 A CN102559996 A CN 102559996A
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China
Prior art keywords
technology
barium
alloy
aluminum
lime
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CN2011104562339A
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Chinese (zh)
Inventor
舒新国
吴彦
朱美颖
赵金山
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XICHUAN COUNTY SENLI IRON STEEL FURNACE CHARGE CO Ltd
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XICHUAN COUNTY SENLI IRON STEEL FURNACE CHARGE CO Ltd
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Priority to CN2011104562339A priority Critical patent/CN102559996A/en
Publication of CN102559996A publication Critical patent/CN102559996A/en
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Abstract

The invention discloses a new silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking and a preparation technology thereof. The alloy and preparation technology are mainly characterized in that the new silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking is prepared by smelting quartz sand, barium carbonate, lime, wrought aluminum ore and silicon carbide in an electric-arc furnace; and the preparation technology comprises the following steps: mixing the quartz sand, wrought aluminum ore, barium carbonate, lime and silicon carbide raw materials at a weight ratio, adding the mixture into the electric-arc furnace lined with a carbon electrode lining, heating and melting for 120-150 minutes, refining, and discharging to obtain the silicon-aluminum-barium-calcium multicomponent deoxidation alloy. Compared with the traditional preparation technology, the preparation technology has the following advantages: electric energy is saved and 8000-9000kWh of power can be saved per ton. Wastes are reused. The carbon electrode, which replaces carbon, is used as the lining, so that every time the lining is repaired, the cost is reduced by 88.2% and the service life is prolonged by 3-5 days.

Description

Steel-making is with polynary deoxygenated alloy of novel Si-Al-Ba-Ca and preparation technology thereof
Technical field
The invention belongs to the deoxidation in steel making technical field, relate to a kind of steel-making and use polynary deoxygenated alloy, be specifically related to a kind of steel-making with polynary deoxygenated alloy of novel Si-Al-Ba-Ca and preparation technology thereof.
Background technology
To add reductor during iron and steel smelting.At present, the reductor that uses in the steel-making is a lot, and with a lot of alloy reductors of the hot stove production in ore deposit, in its production process, power consumption is up to 10000~12000KW.h/t, and production cost is high, complex process, and deoxidation effect and economic benefit are undesirable, and belong to the highly energy-consuming product.
Summary of the invention
In order to address the above problem; The purpose of this invention is to provide a kind of steel-making with polynary deoxygenated alloy of novel Si-Al-Ba-Ca and preparation technology thereof, deoxidation effect not only can satisfy processing requirement, and power consumption is reduced to 2000~3000KW.h/t when smelting; Production cost is low, and economic benefit is high.
To achieve these goals; The technical scheme that the present invention takes is that said steel-making is to be processed through melting in electric arc furnace by silica sand, barium carbonate, lime, wrought aluminium ore, silit with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, and its weight percent is respectively: silica sand 24~28%, barium carbonate 16~20%, lime 15~19%, wrought aluminium ore 20~28%, silit 20~25%.
For obtaining the polynary deoxygenated alloy of said Si-Al-Ba-Ca, the preparation technology that the present invention takes:
After the silica sand of said weight proportion, wrought aluminium ore, barium carbonate, lime, silit starting material are mixed; Join in the electric arc furnace that is lined with the carbonaceous electrodes furnace lining; Through 120~150 minutes heat fused, refining, can come out of the stove the polynary deoxygenated alloy of said Si-Al-Ba-Ca.
This alloy reductor crystallization is careful, hard, fusing point is low (1050~1200 ℃), proportion 3.5~4.5 g/cm 3With structural low and carbon steel that this alloy reductor is smelted, [O] in the steel can reach below 35 ppm; [S] content can reach below 0.03%, and grain fineness number reaches more than 85% more than 10 grades, and mechanical property obviously improves, and tensile strength is than improving 30~70MPa with other reductors; The section elongation improves 3~5%.
Silicon in the alloy reductor provided by the invention and aluminium are a kind of stronger oxyphilic elements; And barium is a kind of active earth alkali metal; Oxygen and sulphur are had very big avidity, and the impurity ability is strong in the removal steel, and the deoxidation products of formation, inclusion are easy to remove in the come-up entering slag in the fused molten steel.Owing to the existence of barium, reduce the vp of calcium simultaneously, made the solubleness of calcium increase greatly; Calcium makes number one in deoxidant element; And also very strong with the avidity of sulphur, so approaching, calcium can improve deoxidation effect, also can play desulfidation; Thereby can make the inclusion floating in the steel, very favourable to improving comprehensive properties of rolled steel.In addition, calcium also makes deoxidation products form more low-melting calcium-aluminate, and come-up is removed easily in molten steel, and nozzle clogging when avoiding pouring molten steel is very favourable to continuous casting.Therefore, the present invention has than great (3.5~4.5 g/c), fusing point point low (1050~1200 ℃); Advantages such as crystallization is careful, hard; Especially when smelting structural low and carbon steel, use this alloy reductor, can improve comprehensive properties of rolled steel effectively.
The starting material that the present invention uses are silica sand, barium carbonate, aluminum ore (ripe), lime, silit, reaction below these materials produce under high temperature action:
Do furnace lining with carbonaceous electrodes (fixed carbon is >=85%, i.e. the carbon element furnace lining) and can fully play ideal carbonaceous reductive action.And in process of production, adopt high temperature fritting material to do batching appearance base, the fusing point reduction can be saved NaCL and fluxed.
The present invention compares with traditional preparation process technology, has:
1, saves electric energy.Produce novel Si-Al-Ba-Ca deoxygenated alloy with the hot stove in ore deposit, power consumption is 10000~12000KW.h/t, is low to moderate 2000~3000KW.h/t and adopt present method to produce novel Si-Al-Ba-Ca deoxygenated alloy power consumption, single ton of economize on electricity 8000~9000KW.h.
2, refuse is used again.Do furnace lining with carbonaceous electrodes, not only prolong the work-ing life of stove, and give full play to the carbonaceous reductive action in the furnace lining.Carbonaceous electrodes is commonly called as negative electrode, and it is smelting enterprise's exhausted waste, and its carbon content is more than 85%.The present invention substitutes carbon element with carbonaceous electrodes and does furnace lining, whenever repaiies furnace lining one time, and cost reduces by 88.2%.And prolong 3~5 days work-ing life.
The present invention is a kind of new and effective complex deoxidization alloy, and oxygen, sulphur and other detrimental impurity chemical affinity during to steel-making in the molten steel are very strong, are used as the degree of depth deoxidation of molten steel and the denaturing treatment of inclusion; Quality to improving steel has vital role, and power consumption is low to moderate 2000~3000KW.h/t when smelting this product, 1/4 when being merely the hot stove in ore deposit and producing; And easy and simple to handle, production cost is low; Only power consumption is one, about ton product economize on electricity 9000KW.h/t, for country practices thrift mass energy.
Embodiment
Below in conjunction with embodiment the present invention is made and to further specify:
Steel-making according to the invention is processed through melting in electric arc furnace by silica sand, barium carbonate, lime, wrought aluminium ore, silit with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, and its weight percent is respectively: silica sand 24~28%, barium carbonate 16~20%, lime 15~19%, wrought aluminium ore 20~28%, silit 20~25%.
For obtaining the polynary deoxygenated alloy of said Si-Al-Ba-Ca, the preparation technology that the present invention takes:
After the silica sand of said weight proportion, wrought aluminium ore, barium carbonate, lime, silit starting material are mixed; Join in the electric arc furnace that is lined with the carbonaceous electrodes furnace lining; Through 120~150 minutes heat fused, refining, can come out of the stove said silicon-aluminium-barium-calcium alloy.
The starting material that the present invention uses are silica sand, barium carbonate, aluminum ore (ripe), lime, silit, reaction below these materials produce under high temperature action:
Do furnace lining with carbonaceous electrodes (fixed carbon is >=85%, i.e. the carbon element furnace lining) and can fully play ideal carbonaceous reductive action.And in process of production, adopt high temperature fritting material to do batching appearance base, the fusing point reduction can be saved NaCL and fluxed.
Proportioning raw materials of the present invention is:
Silica sand (SiO2 >=95%) 24~28%
Barium carbonate (BaCO3 >=98%) 16~20%
Lime (CaO >=90%) 15~19%
Aluminum ore (ripe) (Al2O3 >=85%) 20~28%
Silit (SiC >=90%) 20~25%
Embodiment 1:
Steel-making according to the invention is processed through melting in electric arc furnace by silica sand, barium carbonate, lime, wrought aluminium ore, silit with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, and its weight percent is respectively: silica sand 24%, barium carbonate 16%, lime 16%, wrought aluminium ore 24%, silit 20%.
Its preparation process is: after above-mentioned raw materials is accurately weighed, mixed in the proportioning ratio; Successively compound is joined in the electric arc furnace that is lined with carbonaceous electrodes, when Heating temperature to 1500~1600 ℃, mixed raw material is fully reaction and progressively fusing in burner hearth; After the material off-bottom to be mixed; Refining just obtained the liquid polynary deoxygenated alloy of novel Si-Al-Ba-Ca in 50~60 minutes again, liquid deoxygenated alloy is poured in the ingot mould cooled off, and became piece (granularity is 10~60 ㎜) by the customer requirements particle size reduction; Package encapsulation, can come out of the stove the polynary deoxygenated alloy of said Si-Al-Ba-Ca.
The polynary deoxygenated alloy of producing of novel Si-Al-Ba-Ca, the percentage composition of its Chemical Composition is: Ba>=10, Ca>=10, Si>=28, Al>=10, S≤0.15.
Produce novel Si-Al-Ba-Ca deoxygenated alloy with the hot stove in ore deposit, power consumption is 10000~12000KW.h/t, is low to moderate 2000KW.h/t and adopt present method to produce novel Si-Al-Ba-Ca deoxygenated alloy power consumption, single ton of economize on electricity 9000KW.h.
Embodiment 2:
Steel-making according to the invention is processed through melting in electric arc furnace by silica sand, barium carbonate, lime, wrought aluminium ore, silit with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, and its weight percent is respectively: silica sand 26%, barium carbonate 16%, lime 15%, wrought aluminium ore 22%, silit 21%.
Its preparation method is with embodiment 1.
Produce novel Si-Al-Ba-Ca deoxygenated alloy with the hot stove in ore deposit, power consumption is 10000~12000KW.h/t, is low to moderate 2500KW.h/t and adopt present method to produce novel Si-Al-Ba-Ca deoxygenated alloy power consumption, single ton of economize on electricity 8500KW.h.
Embodiment 3:
Steel-making according to the invention is processed through melting in electric arc furnace by silica sand, barium carbonate, lime, wrought aluminium ore, silit with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, and its weight percent is respectively: silica sand 25%, barium carbonate 16%, lime 15%, wrought aluminium ore 21%, silit 23%.
Its preparation method is with embodiment 1.
Produce novel Si-Al-Ba-Ca deoxygenated alloy with the hot stove in ore deposit, power consumption is 10000~12000KW.h/t, is low to moderate 3000KW.h/t and adopt present method to produce novel Si-Al-Ba-Ca deoxygenated alloy power consumption, single ton of economize on electricity 8000KW.h.

Claims (2)

1. a steel-making is with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca; It is characterized in that said steel-making processed through melting in electric arc furnace by silica sand, barium carbonate, lime, wrought aluminium ore, silit with the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, its weight percent is respectively: silica sand 24~28%, barium carbonate 16~20%, lime 15~19%, wrought aluminium ore 20~28%, silit 20~25%.
2. a steel-making as claimed in claim 1 is with the preparation technology of the polynary deoxygenated alloy of novel Si-Al-Ba-Ca, and its technology may further comprise the steps:
After the silica sand of said weight proportion, wrought aluminium ore, barium carbonate, lime, silit starting material are mixed; Join in the electric arc furnace that is lined with the carbonaceous electrodes furnace lining; Through 120~150 minutes heat fused, refining, can come out of the stove the polynary deoxygenated alloy of said Si-Al-Ba-Ca.
CN2011104562339A 2011-12-31 2011-12-31 New silicon-aluminum-barium-calcium multicomponent deoxidation alloy for steelmaking and preparation technology thereof Pending CN102559996A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104774997A (en) * 2015-03-25 2015-07-15 芜湖华炀炉料科技有限公司 Calcium deoxidizer able to optimize molten steel viscosity and preparation method thereof
CN103757703B (en) * 2014-01-24 2016-08-24 汪长安 A kind of High-purity large-size silicon carbide single crystal and preparation technology thereof
CN107429306A (en) * 2015-03-30 2017-12-01 梅格阿洛依股份公司 Production method of sendust and application thereof
CN110724789A (en) * 2019-11-01 2020-01-24 邹平鑫特铸造科技有限公司 Silicon-aluminum-barium-calcium deoxidizer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1262337A (en) * 2000-02-02 2000-08-09 王忠英 One-step process for producing SiCaAlBaFe alloy with ore roaster
CN101260454A (en) * 2008-04-23 2008-09-10 谢廷声 Preparation of calcium-iron alloy for smelting steel by using calcium carbide as raw material and calcium-containing composite desoxidant
CN101509094A (en) * 2009-04-01 2009-08-19 谢廷声 Silicon-aluminum-barium-calcium rare earth iron alloy for steel-smelting
CN101613787A (en) * 2009-07-17 2009-12-30 凌幸福 Liquid steel high-efficiency composite refining agent
CN102127617A (en) * 2011-01-11 2011-07-20 刘治国 Silicon-aluminum-calcium-magnesium alloy as well as preparation method and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1262337A (en) * 2000-02-02 2000-08-09 王忠英 One-step process for producing SiCaAlBaFe alloy with ore roaster
CN101260454A (en) * 2008-04-23 2008-09-10 谢廷声 Preparation of calcium-iron alloy for smelting steel by using calcium carbide as raw material and calcium-containing composite desoxidant
CN101509094A (en) * 2009-04-01 2009-08-19 谢廷声 Silicon-aluminum-barium-calcium rare earth iron alloy for steel-smelting
CN101613787A (en) * 2009-07-17 2009-12-30 凌幸福 Liquid steel high-efficiency composite refining agent
CN102127617A (en) * 2011-01-11 2011-07-20 刘治国 Silicon-aluminum-calcium-magnesium alloy as well as preparation method and application thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103757703B (en) * 2014-01-24 2016-08-24 汪长安 A kind of High-purity large-size silicon carbide single crystal and preparation technology thereof
CN104774997A (en) * 2015-03-25 2015-07-15 芜湖华炀炉料科技有限公司 Calcium deoxidizer able to optimize molten steel viscosity and preparation method thereof
CN107429306A (en) * 2015-03-30 2017-12-01 梅格阿洛依股份公司 Production method of sendust and application thereof
CN110724789A (en) * 2019-11-01 2020-01-24 邹平鑫特铸造科技有限公司 Silicon-aluminum-barium-calcium deoxidizer

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Application publication date: 20120711