CN112609030A - Blast furnace smelting method of vanadium titano-magnetite - Google Patents
Blast furnace smelting method of vanadium titano-magnetite Download PDFInfo
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- CN112609030A CN112609030A CN202011444119.XA CN202011444119A CN112609030A CN 112609030 A CN112609030 A CN 112609030A CN 202011444119 A CN202011444119 A CN 202011444119A CN 112609030 A CN112609030 A CN 112609030A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a blast furnace smelting method of vanadium-titanium magnetite, which comprises, by mass, 50-55 parts of sintered ore, 5-10 parts of magnesium oxide pellet, 8-12 parts of vanadium-titanium carbon-containing pellet, 10-12 parts of raw ore and 3-8 parts of ferromanganese ore. The blast furnace smelting method of the vanadium titano-magnetite can improve the existing components of injected fuel, change the combustion performance of blast furnace burden and improve the combustion sufficiency and temperature of the blast furnace burden.
Description
Technical Field
The invention relates to the technical field of schreyerite, in particular to a blast furnace smelting method of vanadium titano-magnetite.
Background
The existing blast furnace smelting method of vanadium-titanium magnetite ore is to produce pellet ore, mix the pellet ore and sinter ore according to the corresponding proportion, add the mixture into a blast furnace, react in the blast furnace, generate reducing gas to remove oxygen and smelt.
However, there are a plurality of temperature zones in the blast furnace, the temperature in the blast furnace is not a constant value, and a high temperature zone is required for the temperature in the reflow zone, but the conventional injection combustion temperature cannot reach a temperature at which combustion is sufficiently heated, and thus a better injection combustion method is required.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a blast furnace smelting method of vanadium titano-magnetite, which can provide better injection fuel and injection temperature.
The invention firstly provides a blast furnace smelting method of vanadium titano-magnetite, which is characterized by comprising the following steps: the vanadium titano-magnetite comprises, by mass, 50-55 parts of sintered ore, 5-10 parts of magnesium oxide pellet ore, 8-12 parts of vanadium titano-carbonaceous pellet ore, 10-12 parts of raw ore and 3-8 parts of ferromanganese ore.
The invention also provides the following optimization scheme:
preferably, the vanadium titano-magnetite comprises, by mass, 52-54 parts of sintered ore, 6-8 parts of magnesium oxide pellet, 10-12 parts of vanadium titano-carbonaceous pellet, 10-12 parts of raw ore and 5-8 parts of ferromanganese ore.
Preferably, the vanadium-titanium carbon-containing pellet ore comprises 5-60 parts of common vanadium-titanium ore, 3-8 parts of zirconia, 5-10 parts of slaked lime and 10-40 parts of vanadium-titanium concentrate according to parts by weight.
Preferably, the vanadium-titanium carbon-containing pellet ore comprises 20-50 parts of common vanadium-titanium ore, 5-8 parts of zirconia, 8-10 parts of slaked lime and 20-30 parts of vanadium-titanium concentrate by weight.
Preferably, the magnesium oxide pellet ore comprises 2-5 parts of magnesium oxide powder, 80-90 parts of magnetite powder and 3-5 parts of bentonite by weight.
Preferably, the preparation method of the vanadium-titanium carbon-containing pellet comprises the following steps:
s1, drying and ball-milling 5-60 parts of common schreyerite, 3-8 parts of zirconia, 5-10 parts of slaked lime and 10-40 parts of vanadium-titanium concentrate;
s2, mixing the common schreyerite, zirconia, slaked lime and vanadium-titanium concentrate uniformly to obtain vanadium-titanium carbon-containing pellet ore powder;
s3, heating the vanadium-titanium carbon-containing pellet ore powder and pressing to obtain vanadium-titanium carbon-containing pellet ore blocks;
and S4, carrying out heat treatment again to obtain vanadium-titanium carbon-containing pellets.
Preferably, the heating temperature in step S3 is 200-400 ℃.
Preferably, the heat treatment in step S4 is performed again at 400-600 degrees or more.
Preferably, the ball milling time is 3 to 6 hours.
The invention has the beneficial effects that:
1. the blast furnace smelting method of the vanadium titano-magnetite can improve the existing components of injected fuel, change the combustion performance of blast furnace burden and improve the combustion sufficiency and temperature of the blast furnace burden;
2. the blast furnace smelting method of the vanadium titano-magnetite improves the components of the existing pellet ore and can better smelt the vanadium titano-magnetite.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
The invention firstly provides a blast furnace smelting method of vanadium titano-magnetite, which is characterized by comprising the following steps: the vanadium titano-magnetite comprises, by mass, 50-55 parts of sintered ore, 5-10 parts of magnesium oxide pellet ore, 8-12 parts of vanadium titano-carbonaceous pellet ore, 10-12 parts of raw ore and 3-8 parts of ferromanganese ore.
In a preferred embodiment, the vanadium titano-magnetite comprises, by mass, 52-54 parts of sintered ore, 6-8 parts of magnesium oxide pellets, 10-12 parts of vanadium titano-carbonaceous pellets, 10-12 parts of raw ore and 5-8 parts of ferromanganese ore.
In a preferred embodiment, the vanadium-titanium carbon-containing pellet ore comprises 5-60 parts of common vanadium-titanium ore, 3-8 parts of zirconia, 5-10 parts of slaked lime and 10-40 parts of vanadium-titanium concentrate by weight.
In a preferred embodiment, the vanadium-titanium carbon-containing pellet ore comprises 20-50 parts of common vanadium-titanium ore, 5-8 parts of zirconia, 8-10 parts of slaked lime and 20-30 parts of vanadium-titanium concentrate by weight.
In a preferred embodiment, the magnesium oxide pellet ore comprises 2-5 parts by weight of magnesium oxide powder, 80-90 parts by weight of magnetite powder and 3-5 parts by weight of bentonite.
The preparation method of the vanadium-titanium carbon-containing pellet ore comprises the following steps:
s1, drying and ball-milling 5-60 parts of common schreyerite, 3-8 parts of zirconia, 5-10 parts of slaked lime and 10-40 parts of vanadium-titanium concentrate;
s2, mixing the common schreyerite, zirconia, slaked lime and vanadium-titanium concentrate uniformly to obtain vanadium-titanium carbon-containing pellet ore powder;
s3, heating the vanadium-titanium carbon-containing pellet ore powder and pressing to obtain vanadium-titanium carbon-containing pellet ore blocks;
and S4, carrying out heat treatment again to obtain vanadium-titanium carbon-containing pellets.
In a preferred embodiment, the heating temperature in step S3 is 200-400 ℃.
In a preferred embodiment, the heat treatment in step S4 is performed again at 400-600 degrees or more.
In a preferred embodiment, the ball milling time is 3 to 6 hours.
The invention is described above with reference to specific embodiments.
Example one
In the blast furnace smelting method of vanadium-titanium magnetite of this embodiment, the vanadium-titanium magnetite includes, by mass, 50 parts of sintered ore, 5 parts of magnesium oxide pellet, 8 parts of vanadium-titanium carbon-containing pellet, 10 parts of raw ore, and 3 parts of ferromanganese ore. The vanadium-titanium carbon-containing pellet ore comprises 5 parts of common vanadium-titanium ore, 3 parts of zirconia, 5 parts of slaked lime and 10 parts of vanadium-titanium concentrate according to parts by weight.
The magnesium oxide pellet ore comprises 2 parts of magnesium oxide powder, 80 parts of magnetite powder and 3 parts of bentonite by mass.
The preparation method of the vanadium-titanium carbon-containing pellet ore comprises the following steps:
s1, drying and ball-milling 5 parts of common schreyerite, 3 parts of zirconia, 5 parts of slaked lime and 10 parts of vanadium-titanium concentrate;
s2, mixing the common schreyerite, zirconia, slaked lime and vanadium-titanium concentrate uniformly to obtain vanadium-titanium carbon-containing pellet ore powder;
s3, heating the vanadium-titanium carbon-containing pellet ore powder and pressing to obtain vanadium-titanium carbon-containing pellet ore blocks;
and S4, carrying out heat treatment again to obtain vanadium-titanium carbon-containing pellets.
The heating temperature in step S3 was 200 degrees.
The method of heat treatment again in step S4 is heat treatment at 400 degrees or more.
The ball milling time was 3 hours.
Example two
In the blast furnace smelting method of vanadium-titanium magnetite of this embodiment, the vanadium-titanium magnetite includes, by mass, 55 parts of sintered ore, 10 parts of magnesium oxide pellet, 12 parts of vanadium-titanium carbon-containing pellet, 12 parts of raw ore, and 8 parts of ferromanganese ore. The vanadium-titanium carbon-containing pellet ore comprises 60 parts of common vanadium-titanium ore, 8 parts of zirconia, 10 parts of slaked lime and 40 parts of vanadium-titanium concentrate according to parts by weight.
The magnesium oxide pellet ore comprises, by mass, 5 parts of magnesium oxide powder, 90 parts of magnetite powder and 5 parts of bentonite.
The preparation method of the vanadium-titanium carbon-containing pellet ore comprises the following steps:
s1, drying and ball-milling 60 parts of common schreyerite, 8 parts of zirconia, 10 parts of slaked lime and 40 parts of vanadium-titanium concentrate;
s2, mixing the common schreyerite, zirconia, slaked lime and vanadium-titanium concentrate uniformly to obtain vanadium-titanium carbon-containing pellet ore powder;
s3, heating the vanadium-titanium carbon-containing pellet ore powder and pressing to obtain vanadium-titanium carbon-containing pellet ore blocks;
and S4, carrying out heat treatment again to obtain vanadium-titanium carbon-containing pellets.
The heating temperature in step S3 was 400 degrees.
The method of heat treatment again in step S4 is heat treatment at 600 degrees or more.
The ball milling time was 6 hours.
The blast furnace smelting method of the vanadium titano-magnetite can improve the existing components of injected fuel, change the combustion performance of blast furnace burden and improve the combustion sufficiency and temperature of the blast furnace burden.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (9)
1. A blast furnace smelting method of vanadium titano-magnetite is characterized in that: the vanadium titano-magnetite comprises, by mass, 50-55 parts of sintered ore, 5-10 parts of magnesium oxide pellet ore, 8-12 parts of vanadium titano-carbonaceous pellet ore, 10-12 parts of raw ore and 3-8 parts of ferromanganese ore.
2. The blast furnace smelting method of vanadium titano-magnetite according to claim 1, characterized in that: the vanadium titano-magnetite comprises, by mass, 52-54 parts of sintered ore, 6-8 parts of magnesium oxide pellet ore, 10-12 parts of vanadium-titanium carbon-containing pellet ore, 10-12 parts of raw ore and 5-8 parts of ferromanganese ore.
3. The blast furnace smelting method of vanadium titano-magnetite according to claim 1, characterized in that: the vanadium-titanium carbon-containing pellet ore comprises, by mass, 5-60 parts of common vanadium-titanium ore, 3-8 parts of zirconia, 5-10 parts of slaked lime and 10-40 parts of vanadium-titanium concentrate.
4. The blast furnace smelting method of vanadium titano-magnetite according to claim 1, characterized in that: the vanadium-titanium carbon-containing pellet ore comprises, by mass, 20-50 parts of common vanadium-titanium ore, 5-8 parts of zirconia, 8-10 parts of slaked lime and 20-30 parts of vanadium-titanium concentrate.
5. The blast furnace smelting method of vanadium titano-magnetite according to claim 1, characterized in that: the magnesium oxide pellet ore comprises, by mass, 2-5 parts of magnesium oxide powder, 80-90 parts of magnetite powder and 3-5 parts of bentonite.
6. The blast furnace smelting method of vanadium titano-magnetite according to claim 1, characterized in that: the preparation method of the vanadium-titanium carbon-containing pellet ore comprises the following steps:
s1, drying and ball-milling 5-60 parts of common schreyerite, 3-8 parts of zirconia, 5-10 parts of slaked lime and 10-40 parts of vanadium-titanium concentrate;
s2, mixing the common schreyerite, zirconia, slaked lime and vanadium-titanium concentrate uniformly to obtain vanadium-titanium carbon-containing pellet ore powder;
s3, heating the vanadium-titanium carbon-containing pellet ore powder and pressing to obtain vanadium-titanium carbon-containing pellet ore blocks;
and S4, carrying out heat treatment again to obtain vanadium-titanium carbon-containing pellets.
7. The blast furnace smelting method of vanadium titano-magnetite according to claim 6, characterized in that: the heating temperature in step S3 is 200-400 ℃.
8. The blast furnace smelting method of vanadium titano-magnetite according to claim 6, characterized in that: the heat treatment in step S4 is performed at 400-600 deg.c or higher.
9. The blast furnace smelting method of vanadium titano-magnetite according to claim 6, characterized in that: the ball milling time is 3-6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444119.XA CN112609030A (en) | 2020-12-11 | 2020-12-11 | Blast furnace smelting method of vanadium titano-magnetite |
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| CN202011444119.XA CN112609030A (en) | 2020-12-11 | 2020-12-11 | Blast furnace smelting method of vanadium titano-magnetite |
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| CN112609030A true CN112609030A (en) | 2021-04-06 |
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| CN202011444119.XA Pending CN112609030A (en) | 2020-12-11 | 2020-12-11 | Blast furnace smelting method of vanadium titano-magnetite |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260444A (en) * | 2008-04-15 | 2008-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace iron-smelting method |
| WO2010041770A1 (en) * | 2008-10-10 | 2010-04-15 | 新日本製鐵株式会社 | Blast furnace operating method using carbon-containing unfired pellets |
| KR20130008935A (en) * | 2011-07-13 | 2013-01-23 | 주식회사 포스코 | Process for producing pellet with carbonaceous material incorporated therein |
| CN103981310A (en) * | 2014-05-22 | 2014-08-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for melting vanadium titano-magnetite by blast furnace |
| CN104313302A (en) * | 2014-09-28 | 2015-01-28 | 四川德胜集团钒钛有限公司 | Preparation method of vanadium-titanium pellets |
| CN110106299A (en) * | 2019-05-23 | 2019-08-09 | 东北大学 | A kind of blast furnace smelting method of vanadium titano-magnetite |
-
2020
- 2020-12-11 CN CN202011444119.XA patent/CN112609030A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260444A (en) * | 2008-04-15 | 2008-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace iron-smelting method |
| WO2010041770A1 (en) * | 2008-10-10 | 2010-04-15 | 新日本製鐵株式会社 | Blast furnace operating method using carbon-containing unfired pellets |
| KR20130008935A (en) * | 2011-07-13 | 2013-01-23 | 주식회사 포스코 | Process for producing pellet with carbonaceous material incorporated therein |
| CN103981310A (en) * | 2014-05-22 | 2014-08-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for melting vanadium titano-magnetite by blast furnace |
| CN104313302A (en) * | 2014-09-28 | 2015-01-28 | 四川德胜集团钒钛有限公司 | Preparation method of vanadium-titanium pellets |
| CN110106299A (en) * | 2019-05-23 | 2019-08-09 | 东北大学 | A kind of blast furnace smelting method of vanadium titano-magnetite |
Non-Patent Citations (1)
| Title |
|---|
| 范广权: "《球团矿生产技术问答.上册》", 31 May 2010 * |
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Application publication date: 20210406 |