CN114686627A - Vanadium titano-magnetite blast furnace ironmaking burden and smelting method thereof - Google Patents
Vanadium titano-magnetite blast furnace ironmaking burden and smelting method thereof Download PDFInfo
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- CN114686627A CN114686627A CN202210367662.7A CN202210367662A CN114686627A CN 114686627 A CN114686627 A CN 114686627A CN 202210367662 A CN202210367662 A CN 202210367662A CN 114686627 A CN114686627 A CN 114686627A
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- vanadium
- blast furnace
- titanium
- steel slag
- magnetite
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- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000003723 Smelting Methods 0.000 title claims abstract description 34
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 29
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000008188 pellet Substances 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000009628 steelmaking Methods 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 48
- 239000012141 concentrate Substances 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 24
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 9
- MRHSJWPXCLEHNI-UHFFFAOYSA-N [Ti].[V].[Fe] Chemical compound [Ti].[V].[Fe] MRHSJWPXCLEHNI-UHFFFAOYSA-N 0.000 claims description 9
- 239000004571 lime Substances 0.000 claims description 9
- 229910000278 bentonite Inorganic materials 0.000 claims description 8
- 239000000440 bentonite Substances 0.000 claims description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052681 coesite Inorganic materials 0.000 claims description 7
- 229910052906 cristobalite Inorganic materials 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 229910052682 stishovite Inorganic materials 0.000 claims description 7
- 229910052905 tridymite Inorganic materials 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 3
- 239000000571 coke Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a vanadium titano-magnetite blast furnace iron-making furnace charge and a smelting method thereof, relates to the technical field of iron-making, aims to realize blast furnace smelting on the premise of canceling sintering ores and lump ores and simultaneously solve the use problem of steelmaking slag. The blast furnace ironmaking furnace charge of the vanadium-titanium magnetite comprises vanadium-titanium pellets and steel slag blocks, wherein the mass of the vanadium-titanium pellets accounts for 80-90%, and the mass of the steel slag blocks accounts for 10-20%; the blast furnace smelting method of vanadium-titanium magnetite comprises the steps of adding the blast furnace iron-making furnace burden of the vanadium-titanium magnetite into a blast furnace for smelting, adding vanadium-titanium pellets and steel slag blocks in the blast furnace smelting process, and performing TiO in furnace slag through measures of high air temperature and high oxygen enrichment rate2The content is up to 22-26%, and the vanadium titano-magnetite is strengthened and smelted. The invention cancels the conventional sinter production and adopts vanadium-titanium pellet ore to addThe steel slag blocks produced by steelmaking realize blast furnace smelting, reduce the production cost and expand the application of the steel slag produced by steelmaking.
Description
Technical Field
The invention relates to the technical field of iron making, in particular to a vanadium titano-magnetite blast furnace iron making furnace charge and a smelting method thereof.
Background
The Panxi area has rich vanadium titano-magnetite resource and TiO thereof2The content is as high as 10 to 13%. The common method for smelting vanadium-titanium magnetite comprises the steps of sintering vanadium-titanium magnetite concentrate and common fine ore to produce sintered ore, pelletizing the vanadium-titanium magnetite concentrate and bentonite to produce pellets, adding the sintered ore, the pellets and a small amount of lump ore into a blast furnace together with coke according to a certain proportion, blowing the coke at the lower part to burn the coke to generate reducing gas, ascending the reducing gas and descending the furnace burden to reduce the ore, melting and dripping the ore into a furnace cylinder to complete the smelting process, and realizing the separation of slag and iron. The production of the sinter has large environmental pollution, the lump ore resources are always tense, the function of the lump ore in the vanadium-titanium ore smelting process is obviously weakened, and if the blast furnace smelting can be realized under the condition of canceling the sinter and the lump ore, the method has important significance for the smelting of the vanadium-titanium magnetite.
Disclosure of Invention
The invention firstly provides a vanadium titano-magnetite blast furnace ironmaking burden, which aims to realize blast furnace smelting on the premise of canceling sintered ore and lump ore and solve the use problem of steelmaking slag.
The technical scheme adopted by the invention is as follows: the blast furnace ironmaking furnace charge of the vanadium-titanium magnetite comprises vanadium-titanium pellets and steel slag blocks, wherein the mass of the vanadium-titanium pellets accounts for 80-90%, and the mass of the steel slag blocks accounts for 10-20%; the vanadium-titanium pellet ore comprises the following components: TFe 52-55 wt%, SiO24～7wt％、CaO4～8wt％、MgO2～4wt％、Al2O32～4wt％、V2O50.5～0.7wt％、TiO28-12 wt%, and the steel slag block comprises the following components: TFe 20-30 wt%, SiO210～12wt％、CaO35～45wt％、MgO5～15wt％、Al2O33～6wt％、V2O50.8～3.0wt％、1～2wt％。
Specifically, the method comprises the following steps: the vanadium-titanium pellet ore is prepared by pelletizing, drying, preheating and roasting vanadium-titanium-iron ore concentrate, common iron ore concentrate, active lime and bentonite; the common iron ore concentrate is iron ore concentrate without vanadium and titanium, and comprises 70-80% of vanadium-titanium-iron ore concentrate, 10-20% of common iron ore concentrate, 5-10% of active lime and 1.0-3.0% of bentonite by mass.
Further, the method comprises the following steps: mixing vanadium-titanium-iron ore concentrate, common iron ore concentrate, active lime and bentonite, adding water to prepare pellets, wherein the alkalinity of the pellets is 0.8-1.2, the pellet drying temperature is 500-600 ℃, the preheating temperature is 800-1000 ℃, and the roasting temperature is 1200-1250 ℃; the pelletizing granularity is 10-16 mm and is more than 90%, the mass water content is 8.0-9.5%, the falling strength is not less than 6 times, and the compressive strength index is not less than 1.5 kg.
Wherein the TFe content of the vanadium-titanium-iron ore concentrate is 53-58 wt%, and SiO is22-5 wt% of TiO2Content of 10-13 wt%, V2O5The content is 0.50-0.70 wt%, and the granularity is-200 meshes (0.074mm) > 70%; TFe content of common iron ore concentrate is 58-62 wt%, and SiO2The content is 4-8 wt%, and the granularity is-200 meshes (0.074mm) > 80%; the CaO content of the active lime is 80-85 wt%, the MgO content is 4-10 wt%, and the granularity is-200 meshes (0.074mm) > 80%.
Specifically, the method comprises the following steps: the steel slag block is a block obtained by crushing and screening steel slag generated in steel making.
Wherein the steel slag blocks have the TFe content of 20-30 wt%, the CaO content of 35-50 wt%, and the V content2O5The content is 1-3 wt%, and the particle size is 20-60 mm.
The invention also provides a blast furnace smelting method of the vanadium titano-magnetite, the blast furnace iron-making furnace charge of the vanadium titano-magnetite is added into a blast furnace for smelting, the blast furnace smelting air temperature is 1150-1250 ℃, the oxygen enrichment rate is 4-8%, and the molten iron [ Ti]0.1-0.3%, molten iron [ Si%]0.1-0.3%, slag (TiO)2) 22-26%, and the basicity of the slag (CaO/SiO in the slag)2) The temperature is controlled to be 1.10-1.15.
The invention has the beneficial effects that: through adding vanadium-titanium pellets and steel slag blocks in the blast furnace smelting process and through the measures of high wind temperature and high oxygen enrichment rate, TiO in the furnace slag2Under the condition that the content is as high as 22-26%, the strengthening smelting of the vanadium-titanium magnetite is realized, the use problem of the steel-making slag is solved, iron and vanadium resources in the steel slag block are recycled, and the method has important significance for strengthening blast furnace smelting. The invention cancels the conventional sinter production, realizes blast furnace smelting by adding the vanadium-titanium pellet ore into the steel slag block generated by steel making, reduces the production cost, and expands the high-CaO high-V generated by steel making2O5The application of the steel slag has obvious economic benefit.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention mainly aims at solving the problems of canceling a vanadium-titanium ore sintering process and utilizing high-calcium steel slag, and provides a vanadium-titanium magnetite blast furnace ironmaking burden and a smelting method thereof. The invention takes vanadium-titanium pellets and steel slag blocks as blast furnace ironmaking furnace burden of vanadium-titanium magnetite, realizes blast furnace reinforced smelting of the vanadium-titanium magnetite through high air temperature and high oxygen enrichment rate, and simultaneously recovers iron and vanadium in the steel slag.
The blast furnace iron-making furnace charge of the vanadium-titanium magnetite consists of vanadium-titanium pellets and steel slag blocks, and the main components and the mass percentage of the two raw materials are shown in table 1.
TABLE 1 main Components and contents of vanadium-titanium pellets and Steel slag lumps
| Starting materials | TFe | SiO2 | CaO | MgO | Al2O3 | V2O5 | TiO2 |
| Vanadium-titanium pellet (wt%)) | 52～55 | 4～7 | 4～8 | 2～4 | 2～4 | 0.5～0.7 | 8～12 |
| Steel slag block (wt%) | 20～30 | 10～12 | 35～45 | 5～15 | 3～6 | 0.8～3.0 | 1～2 |
When vanadium-titanium pellet ore is prepared, 70-80% of vanadium-titanium-iron ore concentrate, 10-20% of common iron ore concentrate, 5-10% of active lime and 1-3% of bentonite are mixed by mass and added with water to prepare pellets, and the alkalinity of the pellets is 0.8-1.2. The technological parameters of the vanadium-titanium pellet ore are as follows: the pelletizing granularity is 10-16 mm and is more than 90 percent, the mass water content of the green pellets is controlled to be 8.0-9.5 percent, the falling strength is more than or equal to 6 times, and the compressive strength index is more than or equal to 1.5 kg; the pellet drying temperature is 500-600 ℃, the preheating temperature is 800-1000 ℃, and the roasting temperature is 1200-1250 ℃. When the steel slag blocks are prepared, steel slag generated in steel making is crushed and screened to obtain the steel slag blocks with the granularity of 20-60 mm.
The blast furnace smelting method of the vanadium titano-magnetite comprises the steps of mixing the blast furnace iron-making furnace burden of the vanadium titano-magnetite into a blast furnace for smelting, wherein the blast furnace smelting air temperature is 1150-1250 ℃, the oxygen enrichment rate is 4-8%, and the molten iron [ Ti]0.1-0.3%, molten iron [ Si%]0.1-0.3%, slag (TiO)2) 22-26%, and the basicity of the slag (CaO/SiO in the slag)2) The temperature is controlled to be 1.10-1.15.
According to the blast furnace smelting method of the vanadium titano-magnetite, by taking three schemes of 90% vanadium titano-pellets, 10% steel slag blocks, 85% vanadium titano-pellets, 15% steel slag blocks and 80% vanadium titano-pellets and 20% steel slag blocks as examples, the blast furnace smelting results of the vanadium titano-magnetite are shown in table 2.
TABLE 2 blast furnace smelting results of vanadium titano-magnetite
As can be seen from Table 2, with the increase of the proportion of the vanadium-titanium pellets and the decrease of the proportion of the steel slag blocks, the increase of the air temperature and the increase of the oxygen enrichment rate, the strengthening of blast furnace smelting is realized, the utilization coefficient is increased, the fuel ratio is decreased, and the technical indexes are improved.
Claims (7)
1. The vanadium titano-magnetite blast furnace ironmaking burden is characterized in that: the steel slag pellet consists of vanadium-titanium pellets and steel slag blocks, wherein the vanadium-titanium pellets account for 80-90% of the mass of the steel slag blocks, and the steel slag blocks account for 10-20% of the mass of the steel slag blocks; the vanadium-titanium pellet ore comprises the following components: TFe 52-55 wt%, SiO24～7wt％、CaO4～8wt％、MgO2～4wt％、Al2O32～4wt％、V2O50.5～0.7wt％、TiO28-12 wt%, and the steel slag block comprises the following components: TFe 20-30 wt%, SiO210～12wt％、CaO35～45wt％、MgO5～15wt％、Al2O33～6wt％、V2O50.8～3.0wt％、1～2wt％。
2. The vanadium titano-magnetite blast furnace ironmaking charge of claim 1, characterized in that: the vanadium-titanium pellet ore is prepared by pelletizing, drying, preheating and roasting vanadium-titanium-iron ore concentrate, common iron ore concentrate, active lime and bentonite; the common iron ore concentrate is iron ore concentrate without vanadium and titanium, and comprises 70-80% of vanadium-titanium-iron ore concentrate, 10-20% of common iron ore concentrate, 5-10% of active lime and 1.0-3.0% of bentonite by mass.
3. The vanadium titano-magnetite blast furnace ironmaking charge of claim 2, characterized in that: mixing vanadium-titanium-iron ore concentrate, common iron ore concentrate, active lime and bentonite, adding water to prepare pellets, wherein the alkalinity of the pellets is 0.8-1.2, the pellet drying temperature is 500-600 ℃, the preheating temperature is 800-1000 ℃, and the roasting temperature is 1200-1250 ℃; the pelletizing granularity is 10-16 mm and is more than 90%, the mass water content is 8.0-9.5%, the falling strength is not less than 6 times, and the compressive strength index is not less than 1.5 kg.
4. The vanadium titano-magnetite blast furnace ironmaking charge of claim 2, characterized in that: the TFe content of the vanadium-titanium-iron ore concentrate is 53-58 wt%, and SiO is22-5 wt% of TiO2Content of 10-13 wt%, V2O5The content is 0.50-0.70 wt%, and the granularity is-200 meshes (0.074mm) > 70%; TFe content of common iron ore concentrate is 58-62 wt%, and SiO2The content is 4-8 wt%, and the granularity is-200 meshes (0.074mm) > 80%; the CaO content of the active lime is 80-85 wt%, the MgO content is 4-10 wt%, and the granularity is-200 meshes (0.074mm) > 80%.
5. The vanadium titano-magnetite blast furnace ironmaking charge according to any one of claims 1 to 4, characterized in that: the steel slag block is a block obtained by crushing and screening steel slag generated in steel making.
6. The vanadium titano-magnetite blast furnace ironmaking charge of claim 5, characterized in that: the steel slag block has a TFe content of 20-30 wt%, a CaO content of 35-50 wt%, and a V content2O5The content is 1-3 wt%, and the particle size is 20-60 mm.
7. The blast furnace smelting method of the vanadium titano-magnetite is characterized by comprising the following steps: the vanadium titano-magnetite blast furnace iron-making burden as defined in any one of claims 1 to 6 is added to a blast furnace for smelting, the blast furnace smelting has an air temperature of 1150 to 1250 ℃, an oxygen enrichment rate of 4 to 8%, and molten iron [ Ti ] is]0.1-0.3%, molten iron [ Si%]0.1-0.3%, slag (TiO)2) 22-26%, and the basicity of the slag (CaO/SiO in the slag)2) The temperature is controlled to be 1.10-1.15.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2849151A1 (en) * | 2013-06-14 | 2014-12-14 | Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | Method of smelting vanadium titano-magnetite in blast-furnace |
| CN108929927A (en) * | 2018-08-21 | 2018-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of blast furnace smelting method of the vanadium titano-magnetite of high proportion pellet ore |
| CN108950115A (en) * | 2018-09-20 | 2018-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of blast furnace smelting method of vanadium titano-magnetite |
| CN112553388A (en) * | 2020-11-23 | 2021-03-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Furnace charge of high-grade vanadium titano-magnetite and smelting method |
| CN112553459A (en) * | 2020-11-23 | 2021-03-26 | 攀钢集团攀枝花钢铁研究院有限公司 | High-grade vanadium-titanium pellet and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2849151A1 (en) * | 2013-06-14 | 2014-12-14 | Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | Method of smelting vanadium titano-magnetite in blast-furnace |
| CN108929927A (en) * | 2018-08-21 | 2018-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of blast furnace smelting method of the vanadium titano-magnetite of high proportion pellet ore |
| CN108950115A (en) * | 2018-09-20 | 2018-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of blast furnace smelting method of vanadium titano-magnetite |
| CN112553388A (en) * | 2020-11-23 | 2021-03-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Furnace charge of high-grade vanadium titano-magnetite and smelting method |
| CN112553459A (en) * | 2020-11-23 | 2021-03-26 | 攀钢集团攀枝花钢铁研究院有限公司 | High-grade vanadium-titanium pellet and preparation method thereof |
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| CN114686627B (en) | 2023-08-25 |
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