CN1676624A - Method for preparing manganese series multi-element composite deoxidant for steel smelting and its product - Google Patents
Method for preparing manganese series multi-element composite deoxidant for steel smelting and its product Download PDFInfo
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- CN1676624A CN1676624A CNA2005100731370A CN200510073137A CN1676624A CN 1676624 A CN1676624 A CN 1676624A CN A2005100731370 A CNA2005100731370 A CN A2005100731370A CN 200510073137 A CN200510073137 A CN 200510073137A CN 1676624 A CN1676624 A CN 1676624A
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- composite deoxidant
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- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000003723 Smelting Methods 0.000 title claims abstract description 28
- 150000002696 manganese Chemical class 0.000 title claims description 34
- 229910000831 Steel Inorganic materials 0.000 title claims description 27
- 239000010959 steel Substances 0.000 title claims description 26
- 238000000034 method Methods 0.000 title abstract description 24
- 239000011572 manganese Substances 0.000 claims abstract description 36
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical group [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002360 preparation method Methods 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 21
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000003245 coal Substances 0.000 claims abstract description 12
- 239000010436 fluorite Substances 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000000571 coke Substances 0.000 claims abstract description 11
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 9
- 239000004571 lime Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000004411 aluminium Substances 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 230000002829 reductive effect Effects 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 11
- 239000000956 alloy Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009749 continuous casting Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 229910001570 bauxite Inorganic materials 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000010459 dolomite Substances 0.000 abstract 1
- 229910000514 dolomite Inorganic materials 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- 239000005445 natural material Substances 0.000 abstract 1
- 238000012216 screening Methods 0.000 description 11
- 238000009628 steelmaking Methods 0.000 description 9
- 238000005275 alloying Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910000720 Silicomanganese Inorganic materials 0.000 description 3
- 238000006392 deoxygenation reaction Methods 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- -1 rhombspar Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- Y02W30/54—
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
This invention is a preparation method of steel-smelting polyelement composite deoxidization agent of manganese group, and the raw material adopts natural material or slag and one-off produce manganese polyelement compound. The raw materials contains: manganese ore, rich manganese slag, silica, bauxite, dolomite, fluorite, lime or limestone. The bauxite is the main aluminum resource of the deoxidizing agent and avoids the energy waste caused by the re-melting and cooling of raw materials; and solve that the aluminum ingot is oxidized and rise during the re-melting procedure and the utilization ratio of aluminum metal is low; avoid the high price of the aluminum ingot. This invention uses coal and coke as the reducers; the raw materials have low cost, wide resource range and low energy consumption. The products of this invention are applied to the steel-smelting process, and the deoxidizing products easily rise, and the recycle ratio of alloy elements is stable, and the deoxidizing effect is evident and meets the requirement of continuous casting. The alloy manufacturing has low cost and wide utilization range, and simplifies the steel-smelting technique, lowers the smelting cost and save the alloy resource.
Description
Technical field
The present invention relates to metallurgical class, relate to preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting and products thereof concretely.
Background technology
The preparation manganese series multi-element composite deoxidant adopts remelting process and the outer aluminium incorporation method of stove more in the prior art.Remelting process is that alloy work in-process such as manganese silicon, ferrosilicon are melted the formation multi-element composite deoxidant with raw materials such as aluminium ingot and steel scraps.Because the production of manganese-silicon, ferro-silicon and aluminium ingot etc. has consumed a large amount of energy in raw materials used, these raw materials cool off through remelting again obviously can cause a large amount of energy dissipations, and therefore this method total energy consumption is very high.In addition, owing to the oxidized slag that enters come-up of aluminium ingot part in reflow process, so the utilization ratio of metallic aluminium is not high, and aluminium ingot itself costs an arm and a leg, so the manganese series multi-element composite deoxidant cost that this method is produced is very high.The outer aluminium incorporation method of stove is to produce earlier silicomanganese alloy high-temp melt in the strong reducing apparatus of high temperature, melt is put in the container with heat insulation function again, add the metal aluminium ingot then in the container and make it fusion, the cooling of casting again after the homogenizing obtains the method for manganese series multi-element composite deoxidant.Though this method has certain energy-saving effect than remelting process, but still use the source of metallic aluminium, because aluminium in the process of fusing into the superalloy melt oxidation takes place, so its utilization coefficient is lower as aluminium.
Manganese series multi-element composite deoxidant cost height of the prior art is applied in the steel-making, and steel-making pre-deoxidation, final deoxygenation and alloying need be finished complex process step by step, and alloying element rate of recovery instability is not suitable for the continuous casting requirement.
Summary of the invention
In order to address the above problem, it is low to an object of the present invention is to provide a kind of cost, and technology is simple, and alloy recovery is stable, the preparation method of the manganese series multi-element composite deoxidant for steel smelting that obvious, the suitable continuous casting of deoxidation effect requires.
For achieving the above object, a technical scheme of the present invention provides a kind of preparation method of manganese series multi-element composite deoxidant for steel smelting, and this preparation method adopts All Pure Nature raw material or the disposable production manganese series multi-element composite deoxidant of waste residue.Raw materials used have manganese ore, rich manganese slag, silica, bauxitic clay, rhombspar, fluorite, lime or a Wingdale.
Among the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting of the present invention, raw materials by weight is: manganese ore 10-50%, rich manganese slag 10-40%, silica 10-30%, bauxitic clay 5-20%, rhombspar 7-30%, lime or Wingdale 7-30%, fluorite 3-7%.
Among the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting of the present invention, the raw material screening formulation is by weight percentage: manganese ore 20-30%, rich manganese slag 15-25%, silica 15-25%, bauxitic clay 7-15%, rhombspar 10-25%, lime or Wingdale 10-25%, fluorite 4-6%.
In the preferred prescription of the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting of the present invention, raw materials by weight is: manganese ore 25%, rich manganese slag 16%, silica 20%18%, bauxitic clay 12%10%, rhombspar 15%13%, lime or Wingdale 15%13%, fluorite 5%.
If the ratio of above-mentioned all raw material sums and coke or coal is defined as the ore deposit: coke ratio or ore deposit: the coal ratio, so, the ore deposit that the preparation method adopted of a kind of manganese series multi-element composite deoxidant for steel smelting of the present invention: coke ratio is 1 by weight: 0.8-1.2; If adopt coal as reductive agent, ore deposit of the present invention: the coal ratio is 1: 0.9-1.5.
Pack into after above-mentioned raw materials proportioned and heat in the hot stove in ore deposit, temperature of reaction is 1700-2100 ℃, and the reaction times is 0.5-5 hour.Melt after the electric smelting is carried out the separation of slag iron and by the prior art casting, gets the manganese series multi-element composite deoxidant finished product after the cooling by prior art.The concrete chemical ingredients of product-manganese series multi-element composite deoxidant that preparation method of the present invention produces is by weight percentage:
Iron (Fe) 2.5-27%, silicon (Si) 13-20%, aluminium (Al) 0.3-7.0%, carbon (C) 0.1-2.5%, phosphorus (P) 0.01-0.25%, sulphur (S) 0.001-0.004%, all the other are manganese (Mn).
Compared with prior art, beneficial effect of the present invention is:
Bauxitic clay is the main aluminium source as manganese series multi-element composite deoxidant among the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting of the present invention, has removed raw material from and has cooled off the huge energy dissipation that causes through remelting again; It is oxidized and enter the slag of come-up to have solved aluminium ingot part in reflow process, so the not high problem of the utilization ratio of metallic aluminium; Avoided because aluminium ingot itself costs an arm and a leg, and made the problem that the manganese series multi-element composite deoxidant cost is very high.
The preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting of the present invention uses coal or coke as reductive agent, and cost of material is cheap, and the source is wide.
Energy consumption of the present invention is low, utilizes one ton of manganese series multi-element composite deoxidant power consumption of the every production of the technology of the present invention to be about 5000kwh; 1 ton of product power consumption of the every production of remelting process is about 8000-9000kwh; If the outer aluminium incorporation method of stove is calculated the power consumption of producing metallic aluminium interior, 1 ton of composite deoxidant power consumption of the every production of this method is about 6000-7000kwh.From such data more as can be seen, the present invention is cutting down the consumption of energy, and raises the efficiency, the huge advance made of the aspect that reduces cost.
Product manganese series multi-element composite deoxidant for steel smelting of the present invention is applied in the steel-making, and steel-making pre-deoxidation, final deoxygenation and alloying are once finished, and its deoxidation products is easy to come-up and removes, and the alloying element rate of recovery is stable, and deoxidation effect is obvious, is fit to the continuous casting requirement.Use reductor of the present invention to smelt 20MnSi killed steel in the 15t converter, use silicomanganese and si-al-ba-fe deoxidation to compare with former technology, its deoxidation effect is higher than former technology, and the Mn recovery rate improves 2%, and the Si recovery rate improves 5%.Finished Steel composition, product performance all are up to state standards.Simplify the steel-making operating procedure simultaneously, be more conducive to production management of steelmaking, reduced steel-making cost, saved alloy resource.
The manganese series multi-element composite deoxidant for steel smelting low production cost that the inventive method is produced, suitability is wide, can reach the simplification process for making, reduces steel-making cost, saves the purpose of alloy resource.
Further specify beneficial effect of the present invention below in conjunction with example: the application of the prepared product manganese series multi-element composite deoxidant for steel smelting of the present invention in the HRB335 steel is produced
Experiment place: Liuzhou Iron and Steel Co., Ltd.
The reductor of used reductor for being produced among the embodiment 2,690 tons of total consumptions.
Experimental result: realized that steel-making gives deoxidation, final deoxygenation and alloying and once finish.With use silicomanganese to carry out deoxidation in this factory former technology and alloying compares, the Mn element recovery rate brings up to 86.98% by 85.24% of prior art, mechanical property is brought up to HRB400 by the HRB335 of prior art, has increased substantially the value of steel product.
Embodiment:
Enumerate embodiment below, the present invention is further specified, but the present invention is not only limited to these embodiment.
Embodiment 1
Ratio of components: manganese ore 30kg, rich manganese slag 17kg, silica 10kg, bauxitic clay 8kg, rhombspar 10kg, Wingdale 20kg, fluorite 5kg.
Above-mentioned raw materials is broken respectively, go into former feed bin after sieving, proportioning, adopt the ore deposit: coke ratio is that 1: 0.9 ratio is allocated coke into, carries out 1 hour electrothermal reduction reaction times at 1900-2000 ℃ behind the hot stove in the ore deposit of packing into.After smelting is finished molten state alloy reductor and slag are together emitted, by prior art on the passage of emitting with slag and molten state alloy reductor natural separation.The alloy reductor is poured into a mould by prior art after entering hot metal ladle, behind cooling and shaping again through check, take off operations such as ingot, finishing and obtain this product.Isolated slag enters slag ladle, transports outside the factory after shrend and handles.Manganese series multi-element composite deoxidant finished product, its chemical ingredients are (weight percent):
Mn?65.10％，Si?16.20％，Al?3.21％，C?1.21％，P?0.22％，S?0.03％，Fe?14.03％；
Raw material is the commercially available prod in the present embodiment, to require following (the representing) of raw material with weight percentage:
(1) manganese ore: Mn 〉=31%, Mn/Fe 〉=4.6, P/Mn≤0.035, granularity 5-60mm behind the crushing and screening
(2) rich manganese slag: Mn 〉=36%, Fe≤3%, SiO
2≤ 35%, P≤0.03%, granularity≤60mm behind the crushing and screening
(3) silica: SiO
2〉=97%, Al
2O
3≤ 1.0%, P≤0.02%, granularity 10-50mm behind the crushing and screening
(4) rhombspar: CaO 10-30%, MgO 17-24%, SiO
21.0-5.0%, granularity 10-50mm behind the crushing and screening
(5) lime: CaO 〉=80%, P≤0.05%, granularity≤100mm, the following powder of 5mm is less than 20% behind the crushing and screening
(6) Wingdale: CaCO
3〉=80%, P≤0.05%, granularity 5-60mm behind the crushing and screening
(7) bauxitic clay: Al
2O
3〉=50%, Fe
2O
3≤ 5.0%, TiO
2≤ 5.0%, P≤0.1%, granularity 10-50mm behind the crushing and screening
(8) fluorite: CaF
2〉=80%, P≤0.1%, granularity 1-20mm behind the crushing and screening
(9) coke: fixed carbon 〉=80%, ash content≤15%, P≤0.02%, granularity 5-15mm behind the crushing and screening
(10) coal: calorific value 〉=5000 kilocalories, fixed carbon 〉=40%, ash content≤15%, P≤0.02%, granularity 5-20mm behind the crushing and screening
Embodiment 2
Batching: manganese ore 18kg, rich manganese slag 31kg, silica 12kg, bauxitic clay 6kg, rhombspar 9kg, Wingdale 20kg, fluorite 4kg.
The ore deposit is adopted in the above-mentioned raw materials back that proportions: coal is allocated the raw coal that thermal value is 5600 kilocalories into than 1: 1.2 ratio, carries out electrothermal reduction at 1900-2000 ℃ behind the hot stove in the ore deposit of packing into, 1.2 hours reaction times.The casting cooling of reductive melt slagging-off back is obtained the manganese series multi-element composite deoxidant finished product, and its chemical ingredients is (weight percent):
Mn?65.26％，Si?15.08％，P?0.24％，S?0.040％，C?2.06％，Al?1.54％，Fe?15.82％；
Embodiment 3-7
According to embodiment 1 described method, the preparation manganese series multi-element composite deoxidant, prepare burden (unit: ton) as shown in the table:
| Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 | |
| Manganese ore | 10 | ?50 | ?20 | ?30 | ?25 | ?28 |
| Rich manganese slag | 10 | ?40 | ?25 | ?15 | ?20 | ?18 |
| Silica | 10 | ?30 | ?25 | ?15 | ?20 | ?22 |
| Bauxitic clay | 5 | ?20 | ?15 | ?7 | ?12 | ?10 |
| Rhombspar | 30 | ?10 | ?7 | ?25 | ?15 | ?12 |
| Wingdale | 30 | ?10 | ?7 | ?25 | ?15 | ?12 |
| Fluorite | 7 | ?3 | ?4 | ?6 | ?5 | ?5 |
| Coke | 102 | ?130.4 | ?123.6 | ?0 | ?0 | ?0 |
| Coal | 0 | ?0 | ?0 | ?110.7 | ?134.4 | ?160.5 |
Claims (8)
1. the preparation method of a manganese series multi-element composite deoxidant for steel smelting is characterized in that raw material is made up of the material of following weight per-cent: manganese ore 10-50%, rich manganese slag 10-40%, silica 10-30%, bauxitic clay 5-20%, rhombspar 7-30%, lime or Wingdale 7-30%, fluorite 3-7%.
2. the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting according to claim 1, it is characterized in that: raw material is made up of the material of following weight per-cent: manganese ore 20-30%, rich manganese slag 15-25%, silica 15-25%, bauxitic clay 7-15%, rhombspar 10-25%, lime or Wingdale 10-25%, fluorite 4-6%.
3. the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting according to claim 1, it is characterized in that: raw material is made up of the material of following weight per-cent: manganese ore 25%, rich manganese slag 20%, silica 20%, bauxitic clay 12%, rhombspar 15%, lime or Wingdale 15%, fluorite 5%.
4. the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting according to claim 1 is characterized in that: carry out as follows:
A. pack into after raw material being proportioned in the hot stove in ore deposit, add reductive agent and heat, to molten state,
B. melt is carried out separation of slag iron and casting,
C. cooling.
5. the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting according to claim 4 is characterized in that: reductive agent adopts coke, and the ratio between raw material and the coke is 1: 0.8-1.2.
6. the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting according to claim 4 is characterized in that: reductive agent adopts coal, and the ratio between raw material and the coal is 1: 0.9-1.5.
7. the preparation method of a kind of manganese series multi-element composite deoxidant for steel smelting according to claim 4, it is characterized in that: the temperature of reacting in the hot stove in ore deposit is 1700-2100 ℃, the reaction times is 0.5-5 hour.
8. the product that manufactures as the preparation method of claim 1 or 4 described a kind of manganese series multi-element composite deoxidant for steel smelting, it is characterized in that: its chemical ingredients is as follows by weight percentage: iron 2.5-27%, silicon 13-20%, aluminium 0.3-7.0%, carbon 0.1-2.5%, phosphorus 0.01-0.25%, sulphur 0.001-0.004%, all the other are manganese.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100731370A CN1676624A (en) | 2005-05-31 | 2005-05-31 | Method for preparing manganese series multi-element composite deoxidant for steel smelting and its product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100731370A CN1676624A (en) | 2005-05-31 | 2005-05-31 | Method for preparing manganese series multi-element composite deoxidant for steel smelting and its product |
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| Publication Number | Publication Date |
|---|---|
| CN1676624A true CN1676624A (en) | 2005-10-05 |
Family
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|---|---|---|---|
| CNA2005100731370A Pending CN1676624A (en) | 2005-05-31 | 2005-05-31 | Method for preparing manganese series multi-element composite deoxidant for steel smelting and its product |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408701C (en) * | 2006-04-29 | 2008-08-06 | 危松林 | High-manganese low-carbon composite alloy and method for preparing same |
| CN100415909C (en) * | 2006-08-17 | 2008-09-03 | 偏关县晋电化工有限责任公司 | Production method of silicomangan of sintering powder by rotary kiln and hot filling in ore-smelting electric furnace |
| RU2450059C1 (en) * | 2010-11-17 | 2012-05-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Solid slag-forming mixture to refine steel |
| CN102758056A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-aluminum bentonite steelmaking deoxidizer and preparation method thereof |
| RU2479636C1 (en) * | 2012-03-13 | 2013-04-20 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Method for steel making with low sulphur content |
| RU2735697C1 (en) * | 2020-03-24 | 2020-11-06 | Федеральное государственное бюджетное учреждение науки Институт металлургии Уральского отделения Российской академии наук (ИМЕТ УрО РАН) | Method of out-of-furnace treatment of steel in ladle |
-
2005
- 2005-05-31 CN CNA2005100731370A patent/CN1676624A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408701C (en) * | 2006-04-29 | 2008-08-06 | 危松林 | High-manganese low-carbon composite alloy and method for preparing same |
| CN100415909C (en) * | 2006-08-17 | 2008-09-03 | 偏关县晋电化工有限责任公司 | Production method of silicomangan of sintering powder by rotary kiln and hot filling in ore-smelting electric furnace |
| RU2450059C1 (en) * | 2010-11-17 | 2012-05-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Solid slag-forming mixture to refine steel |
| RU2479636C1 (en) * | 2012-03-13 | 2013-04-20 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Method for steel making with low sulphur content |
| CN102758056A (en) * | 2012-06-21 | 2012-10-31 | 芜湖县天海耐火炉料有限公司 | Silicon-aluminum bentonite steelmaking deoxidizer and preparation method thereof |
| RU2735697C1 (en) * | 2020-03-24 | 2020-11-06 | Федеральное государственное бюджетное учреждение науки Институт металлургии Уральского отделения Российской академии наук (ИМЕТ УрО РАН) | Method of out-of-furnace treatment of steel in ladle |
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