CN102330009A - Bismuth core spun yarn feeding method - Google Patents
Bismuth core spun yarn feeding method Download PDFInfo
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- CN102330009A CN102330009A CN 201010545925 CN201010545925A CN102330009A CN 102330009 A CN102330009 A CN 102330009A CN 201010545925 CN201010545925 CN 201010545925 CN 201010545925 A CN201010545925 A CN 201010545925A CN 102330009 A CN102330009 A CN 102330009A
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- bismuth
- wire
- cored
- liquid steel
- yarn feeding
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Abstract
The invention discloses a bismuth core spun yarn feeding method which comprises the following steps of: controlling the temperature of liquid steel below the boiling point of bismuth or within 40 DEG C above the boiling point of bismuth, agitating the liquid steel at the bottom of the steel ladle by using argon or nitrogen, and feeding the bismuth core spun yarn into the liquid steel through a yarn feeding machine. The bismuth core spun yarn is originally created in domestic and is fed into the liquid steel through the yarn feeding machine by controlling the technological parameters such as liquid steel temperature, argon or nitrogen agitation strength, yarn feeding speed and the like, so that the recovery rate of bismuth is greatly increased and can reach 55-75%, recovery is stable, component control is accurate, the cost is also lowered, the overflow of bismuth steam is reduced, and pollution is lowered.
Description
Technical field
the present invention relates to a kind of feeding method of bismuth cored-wire, belong to metallurgical technology field.
Background technology
are present, in the production process of Iron And Steel Plant, typically use bismuth piece or bismuth ingot and directly in molten steel, add; Because only 1560 ℃ of bismuth boiling points, at high temperature very easily vaporization causes the recovery of bismuth lower; Be merely 10～30%, and reclaim instability, the Composition Control difficulty is big; Cost is also higher, and bismuth is with 100,000 yuan/ton calculation of price, if bi content is 0.1% in the steel, the cost that then adds bismuth piece or bismuth ingot is 333～1000 yuan; Bismuth vapour overflows manyly in the process that adds bismuth piece or bismuth ingot, pollutes bigger.
Summary of the invention
technical problem to be solved by this invention is to provide a kind of recovery that improves bismuth, reduces cost and reduces the bismuth cored-wire feeding method of pollution, thereby overcomes the deficiency of prior art.
are for solving the problems of the technologies described above technical scheme of the present invention: a kind of bismuth cored-wire feeding method.This method is that liquid steel temperature is controlled at below the boiling point of bismuth or is higher than in 40 ℃ of the boiling points of bismuth, and adopts argon gas or nitrogen to stir at ladle bottom, adopts wire feeder with in the bismuth cored-wire feeding molten steel then.
In
above-mentioned bismuth cored-wire feeding method, say accurately that the liquid steel temperature during feeding bismuth cored-wire is 1540～1600 ℃, the feeding speed of bismuth cored-wire is 120～220m/min.
In
above-mentioned bismuth cored-wire feeding method, say accurately that when feeding bismuth cored-wire, stir at ladle bottom blowing argon gas or nitrogen, its pressure 0.15～0.55 Mpa is advisable.
beneficial effect of the present invention: compared with prior art, the present invention is a domestic initiation, and it is through control liquid steel temperature, argon gas or processing parameters such as nitrogen stirring intensity, wire-feeding velocity; The form that adopts the bismuth cored-wire is through in the wire feeder feeding molten steel; To reach the purpose of bismuth alloyization in the molten steel, improved the recovery of bismuth greatly, its recovery can reach 55～75%; And recovery is comparatively stable, and Composition Control is comparatively accurate.Also reduced cost, supposed bismuth with 100,000 yuan/ton calculation of price, if bi content is 0.1% in the steel, then the cost through the feeding of bismuth cored-wire is merely 227～167 yuan.Because the present invention directly feeds the bismuth cored-wire in the molten steel through wire feeder, has significantly reduced bismuth vapour and has overflowed, and has reduced pollution.
the invention has the advantages that: the liquid steel temperature when (1) will add the bismuth cored-wire is controlled at below the boiling point of bismuth; Or be approximately higher than the boiling point of bismuth, thus avoid a large amount of vaporizations of bismuth, improve the bismuth recovery; Reduce bismuth vapour and overflow, reduce and pollute.(2) adopt the mode of bismuth cored-wire to feed at a high speed in the molten steel, make the bismuth cored-wire pass the slag blanket on the molten steel rapidly, reduce the oxidation of bismuth, improve the yield of bismuth through wire feeder.(3) when feeding the bismuth cored-wire, adopt ladle bottom blowing argon gas or nitrogen to stir, can make in the molten steel composition of bismuth even.
are further described the present invention below in conjunction with embodiment.
Embodiment
embodiment 1.Liquid steel temperature is controlled at 1540～1560 ℃, and ladle bottom blowing argon gas or nitrogen stir, and pressure 0.15～0.55 Mpa adopts wire feeder with the feeding speed of 120m/min the bismuth cored-wire to be fed in the molten steel.
embodiment 2.Liquid steel temperature is controlled at 1540～1560 ℃, and ladle bottom blowing argon gas or nitrogen stir, and pressure 0.15～0.55 Mpa adopts wire feeder with the feeding speed of 220m/min the bismuth cored-wire to be fed in the molten steel.
embodiment 3.Liquid steel temperature is controlled at 1560～1600 ℃, and ladle bottom blowing argon gas or nitrogen stir, and pressure 0.15～0.55 Mpa adopts wire feeder with the feeding speed of 120m/min the bismuth cored-wire to be fed in the molten steel.
embodiment 4.Liquid steel temperature is controlled at 1560～1600 ℃, and ladle bottom blowing argon gas or nitrogen stir, and pressure 0.15～0.55Mpa adopts wire feeder with the feeding speed of 220m/min the bismuth cored-wire to be fed in the molten steel.
embodiment of the present invention is not limited to the foregoing description, and the various variations of under the prerequisite that does not break away from aim of the present invention, making all belong within protection scope of the present invention.
Claims (3)
1. bismuth cored-wire feeding method is characterized in that: liquid steel temperature is controlled at below the boiling point of bismuth or is higher than in 40 ℃ of the boiling points of bismuth, and adopt argon gas or nitrogen to stir at ladle bottom, adopt wire feeder with in the bismuth cored-wire feeding molten steel.
2. bismuth cored-wire feeding method according to claim 1 is characterized in that: the liquid steel temperature during feeding bismuth cored-wire is 1540～1600 ℃, and the feeding speed of bismuth cored-wire is 120～220m/min.
3. bismuth cored-wire feeding method according to claim 1 and 2 is characterized in that: stir pressure 0.15～0.55 Mpa at ladle bottom blowing argon gas or nitrogen during feeding bismuth cored-wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010545925 CN102330009A (en) | 2010-11-16 | 2010-11-16 | Bismuth core spun yarn feeding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010545925 CN102330009A (en) | 2010-11-16 | 2010-11-16 | Bismuth core spun yarn feeding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102330009A true CN102330009A (en) | 2012-01-25 |
Family
ID=45481969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010545925 Pending CN102330009A (en) | 2010-11-16 | 2010-11-16 | Bismuth core spun yarn feeding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102330009A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756635A (en) * | 2016-12-30 | 2017-05-31 | 山西太钢不锈钢股份有限公司 | A kind of preparation method containing tellurium steel and its steel containing tellurium |
| CN108359768A (en) * | 2018-03-28 | 2018-08-03 | 太原钢铁(集团)有限公司 | A kind of alloyage process of environment-protective free-cutting steel metal bismuth |
| CN110093477A (en) * | 2019-04-09 | 2019-08-06 | 上海大学 | The bismuth adding technology method of bismuth-containing automatic steel |
| CN110205445A (en) * | 2019-06-24 | 2019-09-06 | 武汉钢铁有限公司 | A kind of alloyage process that bismuth metal being added in ladle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205981A (en) * | 1979-02-28 | 1980-06-03 | International Harvester Company | Method for ladle treatment of molten cast iron using sheathed magnesium wire |
| CN1718819A (en) * | 2005-08-04 | 2006-01-11 | 郭成会 | Rare earth silicon cerium bismuth alloy and its production technology |
| CN102212737A (en) * | 2011-05-11 | 2011-10-12 | 攀钢集团有限公司 | Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying |
-
2010
- 2010-11-16 CN CN 201010545925 patent/CN102330009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4205981A (en) * | 1979-02-28 | 1980-06-03 | International Harvester Company | Method for ladle treatment of molten cast iron using sheathed magnesium wire |
| CN1718819A (en) * | 2005-08-04 | 2006-01-11 | 郭成会 | Rare earth silicon cerium bismuth alloy and its production technology |
| CN102212737A (en) * | 2011-05-11 | 2011-10-12 | 攀钢集团有限公司 | Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756635A (en) * | 2016-12-30 | 2017-05-31 | 山西太钢不锈钢股份有限公司 | A kind of preparation method containing tellurium steel and its steel containing tellurium |
| CN108359768A (en) * | 2018-03-28 | 2018-08-03 | 太原钢铁(集团)有限公司 | A kind of alloyage process of environment-protective free-cutting steel metal bismuth |
| CN110093477A (en) * | 2019-04-09 | 2019-08-06 | 上海大学 | The bismuth adding technology method of bismuth-containing automatic steel |
| CN110205445A (en) * | 2019-06-24 | 2019-09-06 | 武汉钢铁有限公司 | A kind of alloyage process that bismuth metal being added in ladle |
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Application publication date: 20120125 |