CN106282485A - Antispray steel-making additive - Google Patents
Antispray steel-making additive Download PDFInfo
- Publication number
- CN106282485A CN106282485A CN201610892477.4A CN201610892477A CN106282485A CN 106282485 A CN106282485 A CN 106282485A CN 201610892477 A CN201610892477 A CN 201610892477A CN 106282485 A CN106282485 A CN 106282485A
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- China
- Prior art keywords
- steel
- calcium
- strip steel
- antispray
- powder
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a kind of antispray steel-making additive, including: pure calcium silk, middle strip steel, outer layer strip steel, described calcium alloy silk is wrapped in middle strip steel, fills dispersant between middle strip steel and outer layer strip steel.The present invention increases the molten steel penetration capacity of core-spun yarn by double-deck strip steel, it is easy to that core-spun yarn feeds molten steel depths react completely, slow down bobble rise velocity by increase dispersion layer simultaneously, the oxygen in calcium and molten steel is made fully to react, reduce expulsion events, improve the recovery rate of calcium simultaneously, both improve the safety of production, and reduced again production cost.
Description
Technical field
The present invention relates to metallurgical refining techniques field, particularly relate to a kind of antispray steel-making additive.
Background technology
For improving the performance of molten steel, need to add in converter or in ladle additive.In order to improve the spray of additive
Spatter performance, progressively develop into the thread additive of interpolation, through constantly improving, develop into cored wire technology.Core-spun yarn is to be intended to
The various additives (deoxidizer, desulfurizing agent, alterant, alloy etc.) added in molten steel are broken into certain granularity, then with cold
Rolling mild-carbon steel strip by its winding is a composite with random length.
Cored wire technology is a kind of external refining means grown up on the basis of spraying metallurgy technology the eighties, is used for
Steel-making can purify steel inclusion morphology, improves molten steel castability, improves the serviceability of steel, and can significantly improve receiving of alloy
Low alloy-consumption, drops in rate, reduces steel-making cost, remarkable in economical benefits.
At present, commonly used in this field product mainly has silico-calcium core-spun yarn, the real pure calcium core-spun yarn of core, silico-calcium interlayer
Real pure calcium core-spun yarn of core etc., wherein silico-calcium core-spun yarn is to represent the most traditional deoxidation and sulfur-removing additives, but recent years,
Gradually it is promoted with the series additive that the real pure calcium core-spun yarn of core is taken as the leading factor, because real core pure calcium cored can make molten steel purer
Only, processing cost is lower, stability is more preferable, recovery rate is higher, so, instead of traditional silico-calcium cored the most comprehensively
Line.But the disadvantage of real core pure calcium line series core-spun yarn is to produce splash, so molten steel can be produced nitrogen pick-up, also can make simultaneously
Become potential safety hazard.
Application number 201320031261 discloses a kind of double-deck real pure calcium core-spun yarn of core, and it is by real core calcium silk, ground floor steel
Band, second layer steel band combine, and are provided with ground floor steel band in second layer steel band, are inlaid with real core calcium in ground floor steel band
Silk.Application number 201320031235 discloses a kind of pure calcium core-spun yarn of real core with powder interlayer, and it is by real core calcium silk, powder
Interlayer, steel band combine, and are provided with powder interlayer in steel band, are inlaid with real core calcium silk in powder interlayer.Above-mentioned core-spun yarn
Performance relatively monolayer core-spun yarn have bigger improvement, yield of alloy gets a promotion, although powder interlayer and second layer strip steel can
Make core-spun yarn insert certain depth, but owing to the vapourizing temperature of center pure calcium metal is low, after entering molten steel, still can vaporize floating,
Produce the biggest bubble, cause reaction insufficient, and produce splash, bring potential safety hazard to production.
Summary of the invention
The present invention provides a kind of antispray steel-making additive, and the molten steel increasing core-spun yarn by double-deck strip steel penetrates energy
Power, it is simple to core-spun yarn feeds molten steel depths and reacts completely, slows down bobble rise velocity by increase dispersion layer simultaneously,
Make the oxygen in calcium and molten steel fully react, reduce expulsion events, improve the recovery rate of calcium simultaneously, both improve the safety of production
Property, reduce again production cost.
The technical solution used in the present invention is: a kind of antispray steel-making additive, including: pure calcium silk, middle strip steel, outer
Layer strip steel, described pure calcium silk is wrapped in middle strip steel, fills dispersant between middle strip steel and outer layer strip steel.
Preferably technical scheme is that in pure calcium silk, the percentage by weight of calcium is 90-99%.
Preferably technical scheme is that dispersant is one or more in silicon calcium powder, pure calcium powder or aluminium powder.
Preferably technical scheme is that in silicon calcium powder, the percentage by weight of silicon and calcium is: silicon 50-65%, calcium 26-33%；Pure calcium
In powder, the percentage by weight of calcium is 85-99%；In aluminium powder, the percentage by weight of aluminum is 90-99.9%.
Preferably technical scheme is, a diameter of 5-10mm of pure calcium silk, and the thickness of dispersant is 1-5mm, middle strip steel and
The thickness of outer layer strip steel is 0.2-0.8mm.In order to ensure the hardness of core-spun yarn so that it is be inserted into bottom molten steel, it is necessary to assure
The intensity of strip steel, is therefore chosen as 0.2-0.8mm by the thickness range of strip steel.
Owing to the vapourizing temperature of pure calcium metal is low, quickly vaporizing after entering molten steel, floating quickly, so wanting to make it abundant
React with oxygen, it is necessary to assure insert the degree of depth of molten steel, therefore, two-layer strip steel is set in the outside of pure calcium metal, it is ensured that core-spun yarn
Hardness, enable core-spun yarn to pass through the slag blanket on molten steel surface, to increase the insertion depth of core-spun yarn.
Owing to center pure calcium form of metal is thread, so the bubble of vaporization can be very big after entering molten steel, rate of climb meeting
Quickly, it is unfavorable for fully reacting, splash after rising to molten steel surface, can be produced, be unfavorable for safety in production, can absorb again in air
Nitrogen, therefore between two-layer strip steel add dispersion layer, dispersion layer acts primarily as peptizaiton, if being divided into by big pure calcium bubble
Dry little pure calcium bubble, the speed that the bubble that the most both can slow down rises, total bubble surface area can be increased again, so that it is abundant
React with the oxygen in molten steel, improve recovery rate；Not only reduce production cost but also improve production efficiency.
The present invention increases the content of unit length effective ingredient by increasing dispersion layer, it is possible to effectively reduce core-spun yarn
Feeding length, thus shorten the Calcium treatment time, improve production efficiency；Dispersant is by big calcification bubble differentiation so that it is with calcium
Fully reaction, calcium recovery rate improves further, thus reduces a ton consumption for steel additive, reduces direct production cost；Warp
Crossing the peptizaiton of dispersion layer, expulsion events declines to a great extent, and both ensure that safety in production, has decreased again nitrogen content, improve steel
The cleanliness factor of liquid.
Use and have the beneficial effects that produced by technique scheme: the present invention increases core-spun yarn by double-deck strip steel
Molten steel penetration capacity, it is simple to core-spun yarn feeds molten steel depths and reacts completely, slows down gas by increase dispersion layer simultaneously
The bubble rate of climb, makes the oxygen in calcium and molten steel fully react, and reduces expulsion events, improves the recovery rate of calcium simultaneously, both improve
The safety produced, reduces again production cost.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
1, pure calcium silk；2, middle strip steel；3, outer layer strip steel；4, dispersant.
Detailed description of the invention
As it is shown in figure 1, in following example, antispray steel-making additive is by pure calcium silk, middle strip steel, outer layer strip steel and divides
Powder forms, and pure calcium silk 1 is wrapped in middle strip steel 2, fills dispersant 4 between middle strip steel 2 and outer layer strip steel 3.
Embodiment 1
Antispray steel-making additive in the present embodiment, a diameter of 6.5mm of pure calcium silk, the thickness of dispersant is 3.5mm, middle
The thickness of strip steel is 0.2mm, and the thickness of outer layer strip steel is 0.8mm.
In pure calcium silk, the percentage by weight of calcium is 95%；
Dispersant is silicon calcium powder, and in silicon calcium powder, the percentage by weight of silicon and calcium is: silicon %65, calcium 27%.
Embodiment 2
Antispray steel-making additive in the present embodiment, a diameter of 7.0mm of pure calcium silk, the thickness of dispersant is 3.0mm, middle
The thickness of strip steel is 0.5mm, and the thickness of outer layer strip steel is 0.5mm.
In pure calcium silk, the percentage by weight of calcium is 90%；
Dispersant is silicon calcium powder and pure calcium powder, and the percentage by weight of silicon calcium powder and pure calcium powder is respectively as follows: 55%, 45%.
In silicon calcium powder, the percentage by weight of silicon and calcium is: silicon 50%, calcium 30%；In pure calcium powder, the percentage by weight of calcium is 99%.
Embodiment 3
Antispray steel-making additive in the present embodiment, a diameter of 5.0mm of pure calcium silk, the thickness of dispersant is 5.0mm.Middle
The thickness of strip steel is 0.4mm, and the thickness of outer layer strip steel is 0.8mm.
In pure calcium silk, the percentage by weight of calcium is 99%；
Dispersant is silicon calcium powder, pure calcium powder and aluminium powder composition, and the percentage by weight of silicon calcium powder, pure calcium powder and aluminium powder is respectively as follows:
15%、50%、35%。
In silicon calcium powder, the percentage by weight of silicon and calcium is: silicon 55%, calcium 29%；In pure calcium powder, the percentage by weight of calcium is 85%；
In aluminium powder, the percentage by weight of aluminum is 90%.
Embodiment 4
Antispray steel-making additive in the present embodiment, a diameter of 8.5mm of pure calcium silk, the thickness of dispersant is 2.5mm.Middle
The thickness of strip steel is 0.7mm, and the thickness of outer layer strip steel is 0.3mm.
In pure calcium silk, the percentage by weight of calcium is 90%；
Dispersant is pure calcium powder and aluminium powder composition, and the percentage by weight of pure calcium powder and aluminium powder is respectively as follows: 65%, 35%.
In pure calcium powder, the percentage by weight of calcium is 92%；In aluminium powder, the percentage by weight of aluminum is 99.9%.
Embodiment 5
Antispray steel-making additive in the present embodiment, a diameter of 9.0mm of pure calcium silk, the thickness of dispersant is 2.0mm.Middle
The thickness of strip steel is 0.6mm, and the thickness of outer layer strip steel is 0.5mm.
In pure calcium silk, the percentage by weight of calcium is 93%；
Dispersant is silicon calcium powder, pure calcium powder and aluminium powder composition, and the percentage by weight of silicon calcium powder, pure calcium powder and aluminium powder is respectively as follows:
30%、15%、55%。
In silicon calcium powder, the percentage by weight of silicon and calcium is: silicon 55%, calcium 28%；In pure calcium powder, the percentage by weight of calcium is 85%；
In aluminium powder, the percentage by weight of aluminum is 90%.
Embodiment 6
Antispray steel-making additive in the present embodiment, a diameter of 10mm of pure calcium silk, the thickness of dispersant is 1.0mm.Middle
The thickness of strip steel is 0.8mm, and the thickness of outer layer strip steel is 0.2mm.
In pure calcium silk, the percentage by weight of calcium is 95%；
Dispersant is silicon calcium powder and aluminium powder composition, and the percentage by weight of silicon calcium powder and aluminium powder is respectively as follows: 70%, 30%.
In silicon calcium powder, the percentage by weight of silicon and calcium is: silicon 60%, calcium 32%；In aluminium powder, the percentage by weight of aluminum is 95%.
The antispray steel-making additive feeding embodiment 1-6 in molten steel carries out purification of molten steel, its process data and purification
Effect is shown in Table 1.
Table 1 uses embodiment 1-6 antispray steel-making additive to purify calcium liquid data
From embodiment 1-6, substantially reduce without splash, molten steel nitrogen increased amount during feeding core-spun yarn, the average receipts of calcium metal
Yield is 36.5%, the recovery rate of iron 26% of the most common pure calcium line.
Claims (9)
1. an antispray steel-making additive, it is characterised in that: include pure calcium silk (1), middle strip steel (2), outer layer strip steel (3),
Described calcium alloy silk (1) is wrapped in middle strip steel (2), fills dispersant (4) between middle strip steel (2) and outer layer strip steel (3).
Antispray steel-making additive the most according to claim 1, it is characterised in that the weight percent of calcium in described pure calcium silk
Ratio is 90-99%.
Antispray steel-making additive the most according to claim 1, it is characterised in that described dispersant is silicon calcium powder, pure calcium
One or more in powder or aluminium powder.
Antispray steel-making additive the most according to claim 3, it is characterised in that silicon and the weight of calcium in described silicon calcium powder
Percentage ratio is: silicon 50-65%, calcium 26-33%.
Antispray steel-making additive the most according to claim 3, it is characterised in that the weight percent of calcium in described pure calcium powder
Ratio is 85-99%.
Antispray steel-making additive the most according to claim 3, it is characterised in that the percentage by weight of aluminum in described aluminium powder
For 85-99.9%.
Antispray steel-making additive the most according to claim 1, it is characterised in that a diameter of 5-of described pure calcium silk
10mm。
Antispray steel-making additive the most according to claim 1, it is characterised in that the thickness of described dispersant is 1-5mm.
Antispray steel-making additive the most according to claim 1, it is characterised in that described middle strip steel (2) and outer layer band
The thickness of steel (3) is 0.2-0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892477.4A CN106282485A (en) | 2016-10-13 | 2016-10-13 | Antispray steel-making additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610892477.4A CN106282485A (en) | 2016-10-13 | 2016-10-13 | Antispray steel-making additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106282485A true CN106282485A (en) | 2017-01-04 |
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ID=57718463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610892477.4A Pending CN106282485A (en) | 2016-10-13 | 2016-10-13 | Antispray steel-making additive |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202881309U (en) * | 2012-11-13 | 2013-04-17 | 赵丙龙 | Solid calcium-aluminum core-spun wire |
| CN203021601U (en) * | 2013-01-10 | 2013-06-26 | 赵丙龙 | Double-layer solid-core pure-calcium core-spun thread |
| CN203820833U (en) * | 2013-12-25 | 2014-09-10 | 辽宁东戴河新区佳联科技有限公司 | Calcium wire and calcium particle cored wire |
| CN203820835U (en) * | 2013-12-25 | 2014-09-10 | 辽宁东戴河新区佳联科技有限公司 | Composite cored wire |
-
2016
- 2016-10-13 CN CN201610892477.4A patent/CN106282485A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202881309U (en) * | 2012-11-13 | 2013-04-17 | 赵丙龙 | Solid calcium-aluminum core-spun wire |
| CN203021601U (en) * | 2013-01-10 | 2013-06-26 | 赵丙龙 | Double-layer solid-core pure-calcium core-spun thread |
| CN203820833U (en) * | 2013-12-25 | 2014-09-10 | 辽宁东戴河新区佳联科技有限公司 | Calcium wire and calcium particle cored wire |
| CN203820835U (en) * | 2013-12-25 | 2014-09-10 | 辽宁东戴河新区佳联科技有限公司 | Composite cored wire |
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Application publication date: 20170104 |