CN1343793A - Slag melting agent for steelmaking - Google Patents
Slag melting agent for steelmaking Download PDFInfo
- Publication number
- CN1343793A CN1343793A CN00112564A CN00112564A CN1343793A CN 1343793 A CN1343793 A CN 1343793A CN 00112564 A CN00112564 A CN 00112564A CN 00112564 A CN00112564 A CN 00112564A CN 1343793 A CN1343793 A CN 1343793A
- Authority
- CN
- China
- Prior art keywords
- manganese
- slag
- decomposing agent
- steel
- steam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002893 slag Substances 0.000 title claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 12
- 238000009628 steelmaking Methods 0.000 title abstract description 3
- 238000002844 melting Methods 0.000 title abstract 2
- 230000008018 melting Effects 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 239000011572 manganese Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000000571 coke Substances 0.000 claims abstract description 5
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims abstract description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract description 4
- 239000010436 fluorite Substances 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 235000019738 Limestone Nutrition 0.000 abstract 1
- 229910000676 Si alloy Inorganic materials 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 239000006028 limestone Substances 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- -1 Wingdale Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000005262 decarbonization Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 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
- Manufacture And Refinement Of Metals (AREA)
Abstract
A steelmaking slag melting agent belongs to the technical field of steel smelting. It can substitute iron sheet or fluorite for slagging. It is made up by using manganese ore powder, manganese-silicon alloy, limestone and coke through the processes of high-temp. sintering and steam smoldering. The main components of the material are manganese, silicon dioxide, calcium oxide, ferric oxide and the like. It is beneficial to stable operation, reduction of gun sticking, improvement of technical and economic indexes and reduction of steel material consumption.
Description
The invention belongs to the technical field of smelting of steel.
Known to the applicant, in the production process of converter oxygen steelmaking, because blowing decarbonization rate in mid-term accelerates often to occur " returning dried " phenomenon.Return the metallurgical poor activity of dried slag, a little less than dephosphorization, the desulfidation, be unfavorable for the stability in the smelting process.In order to address this problem, traditional method is to add iron sheet or fluorite slag.Section can solve for the moment " returning dried " phenomenon in this way, but also brings adverse consequences: the one, be easy to generate " splash ", and increase iron and steel stock consumption, increase production cost; The 2nd, cause F ion rising in the flue gas, contaminate environment.
Purpose of the present invention: develop the manganese ore dissolving agent, substitute and to add iron sheet or fluorite slag, both solved " returning dried " difficult problem, improved the quality of steel again, reduce environmental pollution.
The present invention is achieved in that
1, a kind of slag decomposing agent for smelting steel, the composition of its composition (weight percent) is Mn30--40%, SiO
2≤ 35%, CaO≤5%, P≤0.25%, S≤0.5%, H
2O≤1%, surplus are ferric oxide.
2, a kind of production method of slag decomposing agent for smelting steel is characterized in that raw material by 55% (containing Mn24-30%) of (weight percent) manganese ore powder, and manganese-silicon 25%, Wingdale 10%, coke 10% are broken into earlier behind the φ 1mm powder mixed respectively; Put that high temperature sintering becomes work in-process in the tunnel kiln into; Smoulder and be finished product through the smoulder steam of kiln of steam again; Finished product is crushed to the granularity of φ 10-15mm, is the slag decomposing agent for smelting steel product.
Advantage of the present invention is: it is effective 1, to change slag, can increase silicon, dephosphorization, desulfurization, and 2, terminal point manganese adds, reduce alloy addition, reduce cost 3, replace fluorite to reduce environmental pollution, 4, improve terminal point and once pull into rate, minimizing is re-blow, 5, help improving lining life, 6, on probation through Ma Gangdi three steelworkss, horse steel Department of Science and Technology demonstration, effect is fine, has vast market prospect.
Below for a slag decomposing agent for smelting steel production method embodiment:
(1) batching: get 55% manganese ore powder (containing Mn28%), 25% manganese-silicon by weight, 10% Wingdale, 10% coke is broken into earlier φ 1mm powdery respectively;
(2) stir, with the manganese ore powder, manganese-silicon, Wingdale, coke drop into the stirrer of 7.5 kw of power in proportion, and each input amount is 1 ton, and through 20 minutes stirring, raw material was fully mixed;
(3) sintering: blended stock is placed in the tunnel furnace of 60m, drops in the kiln at every turn and measure 60 tons, through 900 ℃ of high temperature, 24 hours sintering become work in-process,
(4) secondary is smouldered: work in-process are put into the steam kiln of smouldering smoulder through 4 hours steams of 120 ℃, be cellular iron gray finished product.
(5) fragmentation: finished product is crushed to the granularity of φ 10-15mm, is the dissolving agent product.
Claims (2)
1, a kind of slag decomposing agent for smelting steel, the composition of its composition are (weight percent) Mn30-40%, SiO
2≤ 35%, CaO≤5%, P≤0.25%, S≤0.5%, H
2O≤1%, surplus are ferric oxide.
2, a kind of production method of slag decomposing agent for smelting steel, it is characterized in that raw material by 55% (containing Mn24-30%) of (weight percent) manganese ore powder, manganese-silicon 25%, Wingdale 10%, coke 1 0% mix after being broken into earlier φ 1mm powder respectively, put that high temperature sintering becomes work in-process in the tunnel kiln into, smoulder and become finished product through the smoulder steam of kiln of steam again; Finished product is crushed to the granularity of φ 10-15mm, is the slag decomposing agent for smelting steel product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112564A CN1343793A (en) | 2000-09-21 | 2000-09-21 | Slag melting agent for steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00112564A CN1343793A (en) | 2000-09-21 | 2000-09-21 | Slag melting agent for steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1343793A true CN1343793A (en) | 2002-04-10 |
Family
ID=4582417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00112564A Pending CN1343793A (en) | 2000-09-21 | 2000-09-21 | Slag melting agent for steelmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1343793A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935741A (en) * | 2010-07-21 | 2011-01-05 | 申林 | Fluorine-free efficient compound scorification and slagging furnace burden |
| CN102041356A (en) * | 2010-07-21 | 2011-05-04 | 申林 | Fluorine-free high-efficiency compound slagging charging material and production method thereof |
| CN102417940A (en) * | 2011-08-30 | 2012-04-18 | 郑州东升冶金新材料有限公司 | Defoaming and slagging heat-insulating agent for blast furnace ironmaking and preparation method thereof |
| CN116287560A (en) * | 2022-12-20 | 2023-06-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for synchronously dephosphorizing and manganese increasing semisteel |
-
2000
- 2000-09-21 CN CN00112564A patent/CN1343793A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935741A (en) * | 2010-07-21 | 2011-01-05 | 申林 | Fluorine-free efficient compound scorification and slagging furnace burden |
| CN102041356A (en) * | 2010-07-21 | 2011-05-04 | 申林 | Fluorine-free high-efficiency compound slagging charging material and production method thereof |
| CN101935741B (en) * | 2010-07-21 | 2011-12-21 | 申林 | Fluorine-free efficient compound scorification and slagging furnace slag |
| CN102417940A (en) * | 2011-08-30 | 2012-04-18 | 郑州东升冶金新材料有限公司 | Defoaming and slagging heat-insulating agent for blast furnace ironmaking and preparation method thereof |
| CN116287560A (en) * | 2022-12-20 | 2023-06-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for synchronously dephosphorizing and manganese increasing semisteel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |