CN1035483C - Process for smelting blast-furnace slag containing titanium oxide - Google Patents
Process for smelting blast-furnace slag containing titanium oxide Download PDFInfo
- Publication number
- CN1035483C CN1035483C CN92100493A CN92100493A CN1035483C CN 1035483 C CN1035483 C CN 1035483C CN 92100493 A CN92100493 A CN 92100493A CN 92100493 A CN92100493 A CN 92100493A CN 1035483 C CN1035483 C CN 1035483C
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- CN
- China
- Prior art keywords
- bao
- furnace slag
- slag
- blast furnace
- titanium oxide
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Abstract
The present invention discloses a processing method for smelting blast furnace charge with titanium oxide slag. The method does not change the original technique and the original device and only adds a right amount of barite (BaSO4) or BaO into ingredients of sintered ore or pellet ore to control the content of BaO in blast furnace slag in the range of 0.5 to 2.0% by weight, so the purposes of improving slag performance and reducing iron loss are achieved.
Description
The invention provides a kind of treatment process of smelting the blast furnace raw material of titanium oxide containing slag.
Contain now that iron level is 3-15 (weight %) in the fosterization titanium blast furnace slag, all the other content are TiO
2=12-14%, CaO=25-32%, SiO
2=23-24%, MgO=5-9%, Al
2O
3=9-16%, CaO/SiO
2=1.1-1.35.This slag viscosity is big, often has more metallic iron not easily separated, causes greater loss; Simultaneously owing to TiO in the slag
2The content height, slag easily bubbles, and makes ventilation property variation in the stove, reduces productivity, and slag overflows outside the ditch, also hinders operation, scalds the people easily.
It is abundant to the objective of the invention is to seek a kind of source, and cheap material adds in the blast furnace slag, can reduce the interfacial tension of slag iron, reduces viscosity, is convenient to the sedimentation of metal in the dreg iron, improves the rate of recovery of iron; Improve the lathering property of slag and the ventilation property in the stove simultaneously, boost productivity.
The present invention utilizes the characteristics that high desulphurizing ratio is arranged in iron ore sintering and the pellet roasting process, with a large amount of barite (BaSO that exist of nature
4) make powder, directly join in sintering or the pellet batching BaSO
4Be decomposed into BaO+SO in the heat-processed
2+ O, SO
2Overflow with air.Also can be in advance with BaSO
4BaO is made in roasting, joins in agglomerate or the pellet, by regulating BaSO in agglomerate or the pellet batching again
4Or the proportioning of BaO, making that the content of (BaO) is controlled in the 0.5-2% scope in the blast furnace slag, optimum content should be in the 1.0-1.5% scope.
The invention has the advantages that and utilize cheap starting material-barite, do not increasing any new installation, do not change under the prerequisite of original production process, by (BaO) content in the control slag, can be so that the metal in the dreg iron level reduce and (can reach 1.2-4%) more than 60%, bloating performance improve (highly reducing 10-50%); Simultaneously because sintering process SO
2A large amount of effusions and (BaO) intensive desulfidation, use BaSO
4Not only can not make sulphur content increase in the pig iron, can decrease on the contrary.
(BaO) content is 0.1% o'clock in embodiment 1 slag, and iron level is 7.65%, all the other: TiO
2=24%, CaO=25.8%, SiO
2=24.0%, Al
2O
3=9.10%, MgO=9.00%, CaO/SiO
2=1.1, (S) % is 0.015 ((S) % is 0.019 when not adding BaO) in the iron, titanium slag foaming height 94mm.
(BaO) content is 0.19% o'clock in embodiment 2 slags, and iron level is 3.32%, all the other: TiO
2=24%, CaO=25.8%, SiO
2=24.0%, Al
2O
3=9.10%, MgO=9.00%, CaO/SiO
2≈ 1.1, and (S) % is 0.016 in the iron, and it highly is 64mm that titanium slag bubbles.
(BaO) content is 1.70% o'clock in embodiment 3 slags, and iron level is 3.97% in the slag, all the other: TiO
2=24%, CaO=25.8%, SiO
2=24.0%, Al
2O
3=9.10%, MgO=9.00%, CaO/SiO
2≈ 1.1, and (S) % is 0.018 in the iron, and it highly is 130mm that titanium slag bubbles.
Annotate: each related in specification sheets component concentration is weight %.
Claims (2)
1. a reduction contains the method for titanium oxide blast furnace slag iron loss, is applicable to that former metal in the dreg iron level is 3-15%, all the other content: TiO
2=12-24%, CaO=25-32%, SiO
2=23-24%, MgO=5-9%, Al
2O
3=9-16% (being weight), CaO/SiO
2=1.1-1.35 is characterized in that adding barite BaSO in agglomerate or pellet batching
4Or BaO, make that the content of BaO is 0.5-2.0% (weight) in the blast furnace slag.
2. reduction according to claim 1 contains the method for titanium oxide blast furnace slag iron loss, and the preferred content that it is characterized in that BaO in the blast furnace slag is 1.0-1.5% (weight).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92100493A CN1035483C (en) | 1992-01-30 | 1992-01-30 | Process for smelting blast-furnace slag containing titanium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92100493A CN1035483C (en) | 1992-01-30 | 1992-01-30 | Process for smelting blast-furnace slag containing titanium oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1074939A CN1074939A (en) | 1993-08-04 |
| CN1035483C true CN1035483C (en) | 1997-07-23 |
Family
ID=4938618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92100493A Expired - Fee Related CN1035483C (en) | 1992-01-30 | 1992-01-30 | Process for smelting blast-furnace slag containing titanium oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035483C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041437C (en) * | 1994-11-24 | 1998-12-30 | 重庆钢铁股份有限公司 | Smelting method of blast furnace low-titanium slag |
| CN109306386A (en) * | 2018-08-29 | 2019-02-05 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of high titanium high alumina slag system for blast furnace process |
| CN112280917A (en) * | 2020-09-25 | 2021-01-29 | 攀钢集团研究院有限公司 | Method for reducing iron loss in blast furnace smelting of vanadium titano-magnetite and fluxing powder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1615185A1 (en) * | 1988-08-30 | 1990-12-23 | Нижне-Тагильский Металлургический Комбинат | Method of producing cast iron from titanium-magnetite ores |
-
1992
- 1992-01-30 CN CN92100493A patent/CN1035483C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1615185A1 (en) * | 1988-08-30 | 1990-12-23 | Нижне-Тагильский Металлургический Комбинат | Method of producing cast iron from titanium-magnetite ores |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1074939A (en) | 1993-08-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |