CN1456691A - Silicon-barium-strontium-calcium-magnesium-iron alloy as deoxidant in steelmaking - Google Patents
Silicon-barium-strontium-calcium-magnesium-iron alloy as deoxidant in steelmaking Download PDFInfo
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- CN1456691A CN1456691A CN 03133370 CN03133370A CN1456691A CN 1456691 A CN1456691 A CN 1456691A CN 03133370 CN03133370 CN 03133370 CN 03133370 A CN03133370 A CN 03133370A CN 1456691 A CN1456691 A CN 1456691A
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- magnesium
- barium
- silicon
- strontium
- calcium
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- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A SiBaSrCaMgFe alloy used as deoxidant in smelting steel contains Si (40-60 wt.%), Ba (10-28), Sr (1-8), Ca (1-15), Mg (5-20) and Fe (rest). Its advantages are high deoxidizing power, sure desulfurizing effect and low cost.
Description
Technical field
The present invention relates to a kind of iron alloy that is used for steel making deoxidant, particularly a kind of Silicon-barium-strontium-calcium-magnesium-iron alloy that is used for steel making deoxidant is to the replenishing of existing iron alloy kind, and belongs to steelmaking technical field.
Background technology
In recent years, the reductor development used of refining killed steel is very fast and effect is fine.Progressively develop into binary, ternary, polynary complex deoxidization alloy by single with aluminium deoxidation, these products can only play desoxydatoin, and price is higher, in addition, though the molten steel of steel-making still leaves certain sulphur, phosphorus through handling, thereby influence the quality of steel.
Si-Ba alloy is known as reductor, though it has goodish deoxidizing capacity, still can not satisfy the further requirement to the molten steel oxygen level at present.In addition, the S ability of taking off of existing Si-Ba alloy is obviously not enough.At present, disclosed Chinese invention patent application provides for No. 99109706.8, the Si-Ba-Mg-Fe alloy that is used for steel making deoxidant contains 2～8% aluminium, and this does not have the aluminum steel kind to smelting requirements and requires in the steel the molten very low very strict steel grade of aluminium content of acid is disadvantageous.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, by the composition of existing Si-Ba alloy has been done substantial improvement, provided a kind of Silicon-barium-strontium-calcium-magnesium-iron alloy that is used for steel making deoxidant, barium in this alloy, strontium, calcium, magnesium all has very strong chemically reactive, all to [O] in the steel, [S] has very strong avidity, and do not contain aluminium in the alloy, to smelting no aluminum steel kind and requiring the molten very low steel grade of aluminium of acid is very favourable, deoxidation effect is stable, and it is very little to fluctuate, reduce other alloy addition, can reduce steel-making cost, has good sweetening effectiveness simultaneously, can make to be mingled with distortion, reduce inclusion total amount and grain refining effect, steel is good.
The technical solution that the present invention provides is: this Silicon-barium-strontium-calcium-magnesium-iron alloy that is used for steel making deoxidant, include silicon, barium, magnesium, ferro element, and its chemical ingredients (weight %) is:
Si?40～60％，Ba?10～28％，Sr?1～8％，Ca?1～15％，
Mg 5～20%, and surplus is Fe.
This preparation method who is used for the Silicon-barium-strontium-calcium-magnesium-iron alloy of steel making deoxidant that the present invention provides has two kinds:
1. carbon reduction method
Raw material is dropped in the hot stove in ore deposit reducing and smelting in proportion make, raw materials used (allocating according to used product composition) is silica, barite, rhombspar (wagnerite), lazurite, fluorite, lime, steel cuttings.Reductive agent is coal and coke.
2. remelting process
Silicon barium strontium calcium iron and MAGNESIUM METAL are heated remelting in induction furnace make.
Compared with prior art, this beneficial effect that is used for the Silicon-barium-strontium-calcium-magnesium-iron alloy of steel making deoxidant that provides of the present invention is:
1. the proportion of the Silicon-barium-strontium-calcium-magnesium-iron alloy that provides is bigger, so can be added in the molten bath, make magnesium be in the alloy attitude, because the shock absorption of Si, Ba and Fe has suppressed magnesium dissolving and speed of response, make it have S and O in adequate time and the molten steel to react, solved because the proportion of magnesium is little, boiling point is high and active chemical property, and can't it have been added problem in molten bath, and can prevent from mechanical means magnesium to be added the danger that caused splash is hurted sb.'s feelings in the molten bath by force with ordinary method.
2. the Silicon-barium-strontium-calcium-magnesium-iron alloy decapacitation that provides reduces the dissolved oxygen of molten steel in the molten bath, can play desulfurization again simultaneously, thereby reduces steel-making cost, improves the quality of steel.According to finding behind the scanning electron microscope analysis, use the form and the structure of the inclusion in the steel of alloy smelting of the present invention to be: the oxide inclusion of Fe, Mn mostly is strip, and its sulfide inclusion mostly is spherical and disperse distributes, and seldom sees catenate Al
2O
3Inclusion.Hard in the middle of these inclusiones, the edge has elasticity, can reduce stress in System on Rolling Steel.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is described:
Embodiment 1
The preparation method who adopts the present invention to provide, the chemical ingredients (weight %) of smelting the Silicon-barium-strontium-calcium-magnesium-iron alloy of output is: Si 45.6%, and Ba 25.3%, and Sr 5.6%, and Ca 6.1%, and Mg 6.8%, and surplus is Fe.
Embodiment 2:
The preparation method who adopts the present invention to provide, the chemical ingredients (weight %) of smelting the Silicon-barium-strontium-calcium-magnesium-iron alloy of output is: Si 47.2%, and Ba 22.6%, and Sr 6.1%, and Ca 8.3%, and Mg 10.5%, and surplus is Fe.
Above embodiment is on probation through certain steel mill, all obtains technology and economical effectiveness preferably.
Claims (3)
1. a Silicon-barium-strontium-calcium-magnesium-iron alloy that is used for steel making deoxidant includes silicon, barium, magnesium, ferro element, it is characterized in that the chemical ingredients (weight %) of this alloy is:
Si?40～60％，Ba?10～28％，Sr?1～8％，Ca?1～15％，
Mg 5～20%, and surplus is Fe.
2. the Silicon-barium-strontium-calcium-magnesium-iron alloy that is used for steel making deoxidant according to claim 1, it is characterized in that the chemical ingredients (weight %) of this alloy is: Si 45.6%, and Ba 25.3%, and Sr 5.6%, and Ca 6.1%, and Mg 6.8%, and surplus is Fe.
3. the Silicon-barium-strontium-calcium-magnesium-iron alloy that is used for steel making deoxidant according to claim 1, it is characterized in that the chemical ingredients (weight %) of this alloy is: Si 47.2%, and Ba 22.6%, and Sr 6.1%, and Ca 8.3%, and Mg 10.5%, and surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133370 CN1456691A (en) | 2003-05-26 | 2003-05-26 | Silicon-barium-strontium-calcium-magnesium-iron alloy as deoxidant in steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03133370 CN1456691A (en) | 2003-05-26 | 2003-05-26 | Silicon-barium-strontium-calcium-magnesium-iron alloy as deoxidant in steelmaking |
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| Publication Number | Publication Date |
|---|---|
| CN1456691A true CN1456691A (en) | 2003-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03133370 Pending CN1456691A (en) | 2003-05-26 | 2003-05-26 | Silicon-barium-strontium-calcium-magnesium-iron alloy as deoxidant in steelmaking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462445C (en) * | 2006-05-18 | 2009-02-18 | 北京世纪锦鸿科贸有限责任公司 | Low-aluminium composite deoxidant containing magnesium |
| CN112322905A (en) * | 2020-10-27 | 2021-02-05 | 河南中原特钢装备制造有限公司 | Rare earth deoxidizer for low-aluminum steel electroslag and preparation method thereof |
| CN114107607A (en) * | 2021-11-13 | 2022-03-01 | 干将新材料有限公司 | Deoxidizing agent and its processing method and equipment |
-
2003
- 2003-05-26 CN CN 03133370 patent/CN1456691A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462445C (en) * | 2006-05-18 | 2009-02-18 | 北京世纪锦鸿科贸有限责任公司 | Low-aluminium composite deoxidant containing magnesium |
| CN112322905A (en) * | 2020-10-27 | 2021-02-05 | 河南中原特钢装备制造有限公司 | Rare earth deoxidizer for low-aluminum steel electroslag and preparation method thereof |
| CN114107607A (en) * | 2021-11-13 | 2022-03-01 | 干将新材料有限公司 | Deoxidizing agent and its processing method and equipment |
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