CN1003864B - Blast furnace smelting method of manganese-rich slag - Google Patents
Blast furnace smelting method of manganese-rich slag Download PDFInfo
- Publication number
- CN1003864B CN1003864B CN87101376.2A CN87101376A CN1003864B CN 1003864 B CN1003864 B CN 1003864B CN 87101376 A CN87101376 A CN 87101376A CN 1003864 B CN1003864 B CN 1003864B
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- CN
- China
- Prior art keywords
- manganese
- iron
- ore
- blast furnace
- blast
- 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.)
- Expired
Links
- 239000011572 manganese Substances 0.000 title claims abstract description 69
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 67
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000003723 Smelting Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title description 8
- 239000002893 slag Substances 0.000 title description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 85
- 229910052742 iron Inorganic materials 0.000 claims abstract description 47
- 239000002131 composite material Substances 0.000 claims abstract description 23
- 239000008188 pellet Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 17
- 229910000805 Pig iron Inorganic materials 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims abstract description 4
- 230000000996 additive effect Effects 0.000 claims abstract description 4
- 239000004484 Briquette Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims 1
- 239000000080 wetting agent Substances 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 abstract description 2
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 abstract 3
- 229910000616 Ferromanganese Inorganic materials 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000005054 agglomeration Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 208000002352 blister Diseases 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 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 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
The invention relates to a ferro-manganese composite pellet and application thereof in blast furnace ironmaking. The iron-manganese composite pellet produced by using the iron concentrate powder, the manganese ore powder, the additive and the wetting agent is used for smelting pig iron with high manganese content in a blast furnace, and can improve the technical and economic indexes of blast furnace smelting and improve the recovery rate of manganese. Compared with the original iron ore pellets, the iron-manganese composite pellets have higher mechanical strength and good metallurgical performance.
Description
The present invention relates to the agglomeration processing and the blast furnace ironmaking of iron-smelting raw material, particularly about Fe, Mn composite briquette ore and the application in blast furnace ironmaking thereof.
At present, countries in the world generally all adopt the method that increases grinding fineness to improve the ore dressing grade, and pelletizing process then is a kind of main path that solves the agglomeration of fine grinding concentrate.Become the main iron-bearing material of state's blast furnace ironmakings such as the U.S., Canada with the iron ore pellets of the smart powder production of iron, in various degree use has also been arranged in other countries.Existing iron ore pellets is to be prepared burden by a certain percentage by raw materials such as the smart powder of iron, additive (as wilkinite, slaked lime, Wingdale, rhombspar), wetting agent (be water), through batch mixing, make operations such as ball, green-ball drying, baking and concretion, cooling and produce.Yet, when blast-furnace smelting contains the higher pig iron of manganese and adopts iron ore pellets as main iron-bearing material, need in going into furnace charge to improve manganese content into furnace charge with addition of manganese ore piece, manganese sinter or including Mn-Fe ore.But manganese ore piece and manganese sinter cost height; And including Mn-Fe ore resource shortage, iron content are low, and the rate of recovery of manganese is low when being used for blast-furnace smelting, the smelting technology economic target is poor.Though in the ironworks with agglomerating plant can be adopted manganese ore powder or including Mn-Fe ore adding sintered material, improve the manganese content that furnace charge is gone in ironmaking.But, can only adopt in going into furnace charge with addition of manganese ore piece, manganese sinter or including Mn-Fe ore and improve manganese content into furnace charge to the ironworks of pelletizing equipment is only arranged.Thereby the jacobsite pelletizing of studying the higher pig iron use of a kind of blast-furnace smelting manganese content is very necessary.
The object of the present invention is to provide the higher Fe, Mn composite briquette ore of a kind of manganese content, as the iron content feed stock for blast furnace of the higher pig iron of blast-furnace smelting manganese content.
The invention provides a kind of Fe, Mn composite briquette ore, it is with addition of additive (as wilkinite) and wetting agent (be water) by the smart powder of iron, fine grinding manganese ore powder, through batch mixing, make operations such as ball, green-ball drying, baking and concretion, cooling and produce, the amount of allocating into of its manganese ore powder is determined by the manganese content of the pig iron trade mark of blast-furnace smelting, the manganese content of feed stock for blast furnace and the rate of recovery of manganese.Fe, Mn composite briquette ore can be produced under the constant substantially condition of former iron ore pellets production technique and thermal regulation, and the pelletizing consolidation mechanism is still with Fe
2O
4Be oxidized to Fe
2O
3, make Fe
2O
3The solid phase of crystal growth is fixed to be main, secondly for forming the ore deposit phases such as silicate of manganese suboxide, under the pellet-roasting temperature condition, generates the glued concrete mutually pellet of liquid phase.Simultaneously, high price Mn oxide in the manganese ore powder decomposites oxygen and generates Mn oxide at a low price in the pellet roasting process, help the inner Fe of pellet
2O
4Oxidation, Fe
2O
3Crystal stock and the generation of the glued phase of liquid phase, the intensity of pellet is improved.Facts have proved: the barrate strength of Fe, Mn composite briquette ore is than the high 1-2% of former iron ore pellets, and ultimate compression strength improves about 392 a newton/ball.
It is main iron-bearing material that the present invention adopts Fe, Mn composite briquette ore, is used for the higher pig iron of blast-furnace smelting manganese content.Facts have proved: the blase furnace cast iron that adopts Fe, Mn composite briquette ore of the present invention to smelt, its manganese content meets the requirements, and ingredient stability; Low, the good fluidity of blast-furnace slag viscosity is for all even smooth operation of furnace of desulfuration of foundry iron, furnace cylinder working has been created favourable condition.
Adopting Fe, Mn composite briquette ore of the present invention is main iron-bearing material, is used for the higher pig iron of blast-furnace smelting manganese content, desirable following net effect:
1, adopts explained hereafter Fe, Mn composite briquette ore of the present invention, opened up new approach for directly using the manganese ore powder.The agglomeration separately of manganese ore powder is compared with manganese sinter, can save about 25 yuan/ton of manganese ore powder agglomeration process cost, saves about agglomeration process energy consumption 120 kg mark coal/ton.
2, the physical strength of Fe, Mn composite briquette ore is higher than former iron ore pellets, helps blast-furnace smelting, ore deposit groove and the weighing operation that can save blast furnace manganese ore piece, manganese sinter, including Mn-Fe ore simultaneously.
3, Fe, Mn composite briquette ore is used for blast-furnace smelting, and than direct use manganese ore piece with when containing manganese, iron ore, the rate of recovery of manganese improves 20%.
4, solved the problem of including Mn-Fe ore shortage of resources.
5, improved economic benefit of enterprises, one ton of iron can increase by 7 yuan of profits.
6, can improve the blast furnace smelting technology economic target.
Embodiment one,
The production instance of the Fe, Mn composite briquette ore that blast-furnace smelting III group manganese foundry iron uses:
Green-ball, compound mix in the tube mixer of 2.8 * 6 meters gardens of φ in the ratio preparation of the smart powder 95.7% of iron, wilkinite 2%, manganese ore powder 2.3%, make ball in 4.2 meters balling disk (-sc)s, green-ball through roller screen and cloth at 8 meters
2Dry on the Shaft furnace drying bed, in dry and roasting process with the more no abnormal phenomenon of former oxide pellet.The raw material Chemical Composition of Fe, Mn composite briquette ore, raw material granularity composition, roasting thermal regulation and pellet strength see Table 1,2,3 respectively.
Embodiment two
With Fe, Mn composite briquette ore is raw material, blast-furnace smelting III group manganese foundry iron (Mn0.9-1.30%):
At 100 meters
3Blast-furnace smelting III group manganese foundry iron 355 stoves amount to 4625.6 tons, and are all qualified, and cast iron ingredient is stable, and blast furnace production is normal.Blast furnace feeding ore deposit composition and blast furnace the key technical indexes synopsis see Table 4,5-1,5-2.
The raw material Chemical Composition table of table 1 Fe, Mn composite briquette ore
The raw material granularity of table 2 Fe, Mn composite briquette ore is formed table
Table 3 Fe, Mn composite briquette ore and former iron ore pellets shaft roasting thermal regulation and intensity synopsis
Table 4 blast furnace feeding ore deposit composition table
Table 5-1 blast furnace the key technical indexes synopsis
Table 5-2 blast furnace the key technical indexes synopsis
Claims (2)
1, a kind ofly forms by the smart powder of iron, additive, lubricant, through batch mixing, make the pellet that operations such as ball, green-ball drying, baking and concretion, cooling are produced, it is characterized in that allocating into the manganese ore powder, make Fe, Mn composite briquette ore, the amount of allocating into of its manganese ore powder is determined by the manganese content of the pig iron trade mark of blast-furnace smelting, the manganese content of feed stock for blast furnace and the rate of recovery of manganese.
2, Fe, Mn composite briquette ore as claimed in claim 1 is used for the higher pig iron of blast-furnace smelting manganese content as main iron-bearing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87101376.2A CN1003864B (en) | 1987-08-29 | 1987-08-29 | Blast furnace smelting method of manganese-rich slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87101376.2A CN1003864B (en) | 1987-08-29 | 1987-08-29 | Blast furnace smelting method of manganese-rich slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1031719A CN1031719A (en) | 1989-03-15 |
| CN1003864B true CN1003864B (en) | 1989-04-12 |
Family
ID=4813368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87101376.2A Expired CN1003864B (en) | 1987-08-29 | 1987-08-29 | Blast furnace smelting method of manganese-rich slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003864B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335663C (en) * | 2004-11-21 | 2007-09-05 | 马鞍山中冶钢铁冶金科技实业有限公司 | Pyrolusite blocks and production thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660041B (en) * | 2009-08-11 | 2010-11-24 | 河南德海源诚矿业有限公司 | Method for manufacturing MgO acid pellets by using molybdenum slag |
| CN101775452B (en) * | 2010-02-02 | 2011-04-20 | 河北龙凤山铸业有限公司 | Method for smelting ultra-low sulfur, silicon and titanium grey nodular cast iron by pig iron |
| CN103993117B (en) * | 2014-05-30 | 2016-03-09 | 苏州大学 | A kind of method based on preparing manganeisen from low grade manganese mine |
| CN110295261B (en) * | 2019-07-20 | 2021-05-18 | 武钢集团昆明钢铁股份有限公司 | Smelting method of high-manganese steel-making molten iron |
| CN113981210A (en) * | 2021-10-29 | 2022-01-28 | 吉铁铁合金有限责任公司 | Production process for producing manganese series ferroalloy by roasting manganese ore |
-
1987
- 1987-08-29 CN CN87101376.2A patent/CN1003864B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335663C (en) * | 2004-11-21 | 2007-09-05 | 马鞍山中冶钢铁冶金科技实业有限公司 | Pyrolusite blocks and production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1031719A (en) | 1989-03-15 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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