CN102719621A - Refining slag prepared from molten steel refining waste residues and method thereof - Google Patents
Refining slag prepared from molten steel refining waste residues and method thereof Download PDFInfo
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- CN102719621A CN102719621A CN2011100778137A CN201110077813A CN102719621A CN 102719621 A CN102719621 A CN 102719621A CN 2011100778137 A CN2011100778137 A CN 2011100778137A CN 201110077813 A CN201110077813 A CN 201110077813A CN 102719621 A CN102719621 A CN 102719621A
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- refining
- waste residue
- slag
- powder
- refining waste
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- 238000007670 refining Methods 0.000 title claims abstract description 119
- 239000002699 waste material Substances 0.000 title claims abstract description 80
- 239000002893 slag Substances 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 27
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000843 powder Substances 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 19
- 239000000292 calcium oxide Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 15
- 238000006253 efflorescence Methods 0.000 claims description 11
- 206010037844 rash Diseases 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052742 iron Inorganic materials 0.000 abstract description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 239000011737 fluorine Substances 0.000 abstract description 3
- 229910052731 fluorine Inorganic materials 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000012798 spherical particle Substances 0.000 abstract 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 abstract 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 abstract 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 7
- 239000005864 Sulphur Substances 0.000 description 6
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000007885 magnetic separation Methods 0.000 description 5
- 238000005453 pelletization Methods 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 4
- 229910004261 CaF 2 Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010187 selection method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a refining slag prepared by utilizing molten steel refining waste residue and a method thereof2O350-94 percent of refining slag and B percent of fluxing agent are respectively taken as the fluxing agent for preparing refining slag2O35-20% of powder, 0-27% of component regulator quicklime and 1-3% of binder sodium carboxymethyl cellulose powder; the preparation process comprises recovering refined waste residue, naturally cooling and pulverizing, and mechanically crushing; removing iron, sieving with 80 mesh sieve, taking fine powder under the sieve, and analyzing components; then, mixing the raw materials in proportion, making the mixture into spherical particles with the particle size of 5-30 mm by a granulator, and drying the spherical particles for four hours at 105 ℃. The invention utilizes the refining waste residues to prepare the refining slag, improves the cyclic utilization rate of the refining slag, further eliminates the damage to the environment and the waste to resources caused by year-by-year accumulation of the refining waste residues, and simultaneously can also reduce the pollution of fluorine to the environment and improve the refining slagging speed and the smelting stability.
Description
Technical field
The present invention relates to a kind of recycle method of ferrous metallurgy waste residue, be specifically related to a kind of refining slag and method thereof of utilizing the preparation of liquid steel refining waste residue.
Background technology
For obtaining the molten steel of better technico-economical comparison, improve steel product quality, to shorten the heat and simplify technological process, external refining has become the indispensable technological process of each steel mill.But following then be the appearance of a large amount of refining waste residues, 08 year China just produces refining waste residue 500～1,000 ten thousand ton.The refining waste residue has following characteristics: basicity is high, is rich in CaO and Al in the refining waste residue
2O
3, wherein CaO is up to about 50%.CaO has stronger sweetening power, is the composition that really plays desulfurization, dephosphorizing in the outer refining slag system of steel melting furnace.Carry out as refining slag with the refining waste residue in theory concise, can the shortening slag time, reduce power consumption.But, usually need add fusing assistant CaF because its fusing point of CaO is very high
2,, guarantee the refining quality to reduce the slagging temperature.But along with to health, the raising of environmental requirement, CaF
2Use more and more be restricted, so the refining waste residue is as being restricted.It is fast to have when recycling slag, and the slagging performance is good.
Domestic utilization to the ladle refining waste residue at present generally is to pour the ladle refining waste residue into slag pan to transport to the processing of slag field, and the waste residue after the processing is as the roadbed of paving the way or be used for preparing cement, and processing needs a large amount of places to deposit like this, and causes environmental pollution easily; In addition; Make ball with allocating certain sticker into after the ladle refining waste residue processing under cooling exactly; Dry back adds converter to be made slag former or the refining waste residue is carried out returning the external refining process after the processing treatment use, but this utilization to the refining waste residue does not break away from and adopts CaF
2Make the category of fusing assistant, also can cause the pollution of fluorine environment.
The Chinese invention patent that utilizes of looking into relevant refining waste residue has: (application number 200910264646.X) sulfur-bearing refining waste residue is used for the method for utilizing of refining slag; Propose to adopt the objectionable constituent CaS in the pyrolytic decomposition refining waste residue; And then be used for refining; This method needs to have increased energy waste through high-temperature roasting, in the reuse refining process, also can adopt fusing assistant CaF
2, cause fluoride pollution.And this patent adopts naturally cooling atomizing method to reclaim the refining waste residue, causes most of refining waste residue to utilize, and has reduced the utilization ratio again of refining waste residue.(application number 200910029248.X) a kind of ladle refining is with slag adhesion preventing fluorine-free slag modifier and preparation method and method of use; Propose to adopt quickened lime, bauxitic clay and boric anhydride to prepare fluorine-free slag modifier, this method can effectively be controlled refining unit dry slag, advantages such as no fluoride pollution; But it only is the slag supplying agent in the refining process; Can not make refining slag separately and use, and the raw materials used natural resource that are, resource provisioning and environment protection are caused big pressure.
Summary of the invention
The present invention discloses a kind of refining slag and method thereof of utilizing the preparation of liquid steel refining waste residue, and the refining waste residue that proposes with high basicity is a main raw material, with B
2O
3For fusing assistant prepares refining slag, to improve its cyclic utilization rate, and then eliminate the refining waste residue and accumulate year by year as refining slag, the destruction that environment is caused and to the waste of resource also can alleviate fluoride pollution simultaneously and improves slag making speed and smelt stability.
The objective of the invention is to utilize the refining waste residue of high basicity, is main raw material through the refining waste residue with high basicity, with B
2O
3For fusing assistant prepares refining slag; Improve its cyclic utilization rate as refining slag; And then eliminate that the refining waste residue accumulates destruction that environment is caused year by year and to the waste of resource, also can alleviate the fluorine pollution on the environment simultaneously and improve refining slag making speed and smelt stability.
The invention provides a kind of refining slag that utilizes liquid steel refining waste residue preparation, it is that refining waste residue with high basicity is a raw material, with B
2O
3For fusing assistant prepares refining slag, add composition regulator and sticker in addition, its raw material is formed precentagewise and is respectively refining waste residue 50%～94%, fusing assistant B
2O
3Powder 5%～20%, composition regulator unslaked lime 0%～27%, sticker Xylo-Mucine powder 1%～3%.
Concrete grammar is following:
Reclaim the refining waste residue, again through Mechanical Crushing, 80 mesh sieves are crossed in deironing after the naturally cooling efflorescence, get sieve fine powder down, mainly are to reclaim useful refining waste residue, avoid unnecessary impurity to return refining furnace, and steel quality is exerted an influence, and analyze composition; Then, according to refining waste residue composition, get refining waste residue 50%～94% by mass percentage respectively, composition regulator unslaked lime 0%～27%, fusing assistant B
2O
3Powder 5%～20%, sticker Xylo-Mucine powder 1%～3%; After above-mentioned raw materials mixed,, process the spheroidal particle of granularity 5～30mm through nodulizer, 105 ℃ down oven dry forming in four hours.
Wherein, the efflorescence of refining waste residue nature is exactly in refining waste residue natural cooling process, and the volumetric expansion through crystal conversion produces makes waste residue be refined into powdery, to save the energy of Mechanical Crushing waste residue; Nature atomizing waste residue granularity is uneven, and some refining waste residue is difficult for efflorescence or can not efflorescence, therefore in order to improve the utilization ratio of waste residue, improves the refining slag quality, and the waste residue after natural efflorescence in 5 days～7 days is carried out Mechanical Crushing.Deironing mainly is to adopt magnetic selection method to remove residual iron and the oxide compound of iron in the waste residue, avoids molten steel is produced secondary oxidation; The purpose of crossing 80 mesh sieves is further to remove to be difficult for atomizing and to contain iron and be difficult for the atomizing ore deposit with other and reach impurity mutually, prevents molten steel is caused secondary pollution, guarantees that simultaneously waste residue has certain specific surface area, is convenient to and the fusing assistant thorough mixing; The purpose of analyzing composition is to change according to the waste residue composition, and adjustment fusing assistant and unslaked lime add-on are to reach best refining effect; Unslaked lime (CaO) is the staple of desulfurization in the refining slag, dephosphorization, regulates the unslaked lime add-on according to the waste residue composition, realizes that refining slag composition and refining effect are stable; B
2O
3Powder is main fusing assistant, can be according to Al in the waste residue
2O
3Content is adjusted because in slag system Al
2O
3Also possess certain fluxing action, therefore, Al in waste residue
2O
3When content is higher, B
2O
3Desirable near lower limit than low value, on the contrary, Al in waste residue
2O
3When content is low, B
2O
3Desirable high value near the upper limit guarantees that refining slag has refining effect preferably; The Xylo-Mucine powder is made sticker and is used in this product, improve the cohesive force of balling-up process, improves spherical refining slag particulate intensity; The employing mechanical stirring is mixed, and purpose is that each composition is mixed, and helps reducing temperature of fusion, improves refining effect; Granularity is controlled at 5～30mm, because granularity is to guarantee refining slag slagging speed and have the key factor of sound response dynamic conditions, size too greatly then slagging speed is slow, undersized then be prone to cause disperse and airborne dust; The purpose of oven dry is to remove the contained planar water of refining slag particle, avoids the unslaked lime aquation and molten steel is caused secondary oxidation.Then required time is long because bake out temperature hangs down to adopt 105 ℃ of oven dry to be, drying effect is poor, and the too high particle that then makes easily of temperature bursts or form crackle, influences granule strength and refining quality.
Use the refining slag of the present invention preparation can make after refining treatment (being example) that sulphur content reaches in 10ppm～50ppm scope in the molten steel with the refining of LF stove, suitable with synthetic refining slag with the pro-molten refining slag sweetening effectiveness.Simultaneously, using this refining slag can obviously reduce refining slag discharging, is example to produce 1000 ten thousand tons iron and steel enterprise per year; As all carry out refining treatment, and then can produce about 200,000 tons in refining waste residue its every year, can reach 80% according to the utilization ratio of the inventive method waste residue; Then can reduce 160,000 tons of refining waste sludge discharges every year; Can effectively reduce steel mill's dust pollution and waste discharge amount, improve the environment of plant, significant to the enterprises implement target for energy-saving and emission-reduction.Simultaneously, every use is reclaimed the natural resource that the refining waste residue also can be saved synthetic refining slag of a large amount of manufacturings and pro-molten refining slag for one ton, and has alleviated fluoride pollution, under the situation that does not influence the steel-making quality, can produce huge economic benefit and social benefit.
Embodiment
Introduce several specific embodiment of the present invention below:
Embodiment 1
To deposit a week from the refining waste residue that steel mill reclaims, and treat after its natural efflorescence, to sieve with 80 mesh then through the magnetic separation de-iron again through Mechanical Crushing, extracting screen underflow is weighed and is analyzed composition.Get refining waste residue powder 60% by mass percentage respectively, B
2O
311%, unslaked lime 27%, Xylo-Mucine powder 2% mixes above-mentioned raw materials, processes the pelletizing about granularity 15mm through nodulizer, in 105 ℃ of baking ovens, forms through oven dry in four hours then.Use this product that the middle low carbon steel molten steel is carried out refining treatment, ton steel add-on is 15kg/t, treatment time 35min, and desulfurization degree 91%, sulphur content is 10ppm in the steel.
Embodiment 2
To deposit a week from the refining waste residue that steel mill reclaims, and treat after its natural efflorescence, to sieve with 80 mesh then through the magnetic separation de-iron again through Mechanical Crushing, extracting screen underflow is weighed and is analyzed composition.Get refining waste residue powder 50% by mass percentage respectively, B
2O
320%, unslaked lime 27%, Xylo-Mucine powder 3% mixes above-mentioned raw materials, processes the pelletizing about granularity 5mm through nodulizer, in 105 ℃ of baking ovens, forms through oven dry in four hours then.Use this product that the middle low carbon steel molten steel is carried out refining treatment, ton steel add-on is 15kg/t, treatment time 35min, and desulfurization degree 85%, sulphur content is 22ppm in the steel.
Embodiment 3
To deposit a week from the refining waste residue that steel mill reclaims, and treat after its natural efflorescence, to sieve with 80 mesh then through the magnetic separation de-iron again through Mechanical Crushing, extracting screen underflow is weighed and is analyzed composition.Get refining waste residue powder 94% by mass percentage respectively, B
2O
35%, unslaked lime 0%, Xylo-Mucine powder 1% mixes above-mentioned raw materials, processes the pelletizing about granularity 30mm through nodulizer, in 105 ℃ of baking ovens, forms through oven dry in four hours then.Use this product that the middle low carbon steel molten steel is carried out refining treatment, ton steel add-on is 15kg/t, treatment time 35min, and desulfurization degree 70%, sulphur content is 50ppm in the steel.
Embodiment 4
To deposit a week from the refining waste residue that steel mill reclaims, and treat after its natural efflorescence, to sieve with 80 mesh then through the magnetic separation de-iron again through Mechanical Crushing, extracting screen underflow is weighed and is analyzed composition.Get refining waste residue powder 70% by mass percentage respectively, B
2O
310%, unslaked lime 18%, Xylo-Mucine powder 2% mixes above-mentioned raw materials, processes the pelletizing about granularity 20mm through nodulizer, in 105 ℃ of baking ovens, forms through oven dry in four hours then.Use this product that the middle low carbon steel molten steel is carried out refining treatment, ton steel add-on is 15kg/t, treatment time 35min, and desulfurization degree 80%, sulphur content is 30ppm in the steel.
Embodiment 5
To deposit a week from the refining waste residue that steel mill reclaims, and treat after its natural efflorescence, to sieve with 80 mesh then through the magnetic separation de-iron again through Mechanical Crushing, extracting screen underflow is weighed and is analyzed composition.Get refining waste residue powder 80% by mass percentage respectively, B
2O
38%, unslaked lime 10%, Xylo-Mucine powder 2% mixes above-mentioned raw materials, processes the pelletizing about granularity 25mm through nodulizer, in 105 ℃ of baking ovens, forms through oven dry in four hours then.Use this product that the middle low carbon steel molten steel is carried out refining treatment, ton steel add-on is 15kg/t, treatment time 35min, and desulfurization degree 75%, sulphur content is 40ppm in the steel.
Claims (2)
1. a refining slag that utilizes liquid steel refining waste residue preparation is characterized in that, is raw material with the refining waste residue of high basicity, with B
2O
3For fusing assistant prepares refining slag, add composition regulator and sticker in addition, its raw material is formed precentagewise and is respectively refining waste residue 50%～94%, fusing assistant B
2O
3Powder 5%～20%, composition regulator unslaked lime 0%～27%, sticker Xylo-Mucine powder 1%～3%.
2. the described a kind of preparation method who utilizes the refining slag of refining waste residue preparation of claim 1 is characterized in that the technological process of its preparation is such:
Reclaim the refining waste residue, again through Mechanical Crushing, 80 mesh sieves are crossed in deironing after the naturally cooling efflorescence, get sieve fine powder down, analyze composition; Then, according to refining waste residue composition, get refining waste residue 50%～94% by mass percentage respectively, composition regulator unslaked lime 0%～27%, fusing assistant B
2O
3Powder 5%～20%, sticker Xylo-Mucine powder 1%～3%; After above-mentioned raw materials mixed,, process the spheroidal particle of granularity 5～30mm through nodulizer, 105 ℃ down oven dry forming in four hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100778137A CN102719621A (en) | 2011-03-29 | 2011-03-29 | Refining slag prepared from molten steel refining waste residues and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100778137A CN102719621A (en) | 2011-03-29 | 2011-03-29 | Refining slag prepared from molten steel refining waste residues and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102719621A true CN102719621A (en) | 2012-10-10 |
Family
ID=46945486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100778137A Pending CN102719621A (en) | 2011-03-29 | 2011-03-29 | Refining slag prepared from molten steel refining waste residues and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102719621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409596A (en) * | 2013-07-23 | 2013-11-27 | 首钢水城钢铁（集团）有限责任公司 | Regeneration and cyclic utilization method for refining slag |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677314A (en) * | 1979-11-30 | 1981-06-25 | Denki Kagaku Kogyo Kk | Calcareous iron and steel refining agent |
| KR920005611B1 (en) * | 1989-12-28 | 1992-07-10 | 포항종합제철 주식회사 | Prevention of eruption of stainless steel slag |
| CN101463406A (en) * | 2007-12-20 | 2009-06-24 | 鞍山钢铁集团公司 | Converter flux using LF refining slag as raw material and production method thereof |
| CN101643822A (en) * | 2009-08-31 | 2010-02-10 | 江苏大学 | Ultrahigh basicity low aluminum fluorine-free refining slag and preparation method and use method thereof |
-
2011
- 2011-03-29 CN CN2011100778137A patent/CN102719621A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677314A (en) * | 1979-11-30 | 1981-06-25 | Denki Kagaku Kogyo Kk | Calcareous iron and steel refining agent |
| KR920005611B1 (en) * | 1989-12-28 | 1992-07-10 | 포항종합제철 주식회사 | Prevention of eruption of stainless steel slag |
| CN101463406A (en) * | 2007-12-20 | 2009-06-24 | 鞍山钢铁集团公司 | Converter flux using LF refining slag as raw material and production method thereof |
| CN101643822A (en) * | 2009-08-31 | 2010-02-10 | 江苏大学 | Ultrahigh basicity low aluminum fluorine-free refining slag and preparation method and use method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 赵俊学等: "LF钢渣返回利用的脱硫研究", 《炼钢》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409596A (en) * | 2013-07-23 | 2013-11-27 | 首钢水城钢铁（集团）有限责任公司 | Regeneration and cyclic utilization method for refining slag |
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Application publication date: 20121010 |