CN111647706A - Converter vanadium extraction coolant and production method thereof - Google Patents
Converter vanadium extraction coolant and production method thereof Download PDFInfo
- Publication number
- CN111647706A CN111647706A CN202010703188.1A CN202010703188A CN111647706A CN 111647706 A CN111647706 A CN 111647706A CN 202010703188 A CN202010703188 A CN 202010703188A CN 111647706 A CN111647706 A CN 111647706A
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- China
- Prior art keywords
- converter
- coolant
- vanadium extraction
- vanadium
- iron
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to the field of ferrous metallurgy, in particular to a converter vanadium extraction coolant and a production method thereof. The invention provides a converter vanadium extraction coolant which is prepared by taking nepheline ore as a binder in the converter vanadium extraction coolant and taking an iron-containing material and the nepheline ore as raw materials. The cooling agent for extracting vanadium from the converter is used for extracting vanadium from the converter, and can reduce the mass fraction of silicon dioxide in the vanadium slag by 1-2%, reduce the iron content of the vanadium slag by 1-2 mass%, and improve the output of the vanadium slag.
Description
Technical Field
The invention relates to the field of ferrous metallurgy, in particular to a converter vanadium extraction coolant and a production method thereof.
Background
The converter vanadium extraction coolant is used for cooling a molten pool in the vanadium extraction process, the commonly used binders in the production of the vanadium extraction coolant mainly comprise organic binders, bentonite containing silicon dioxide and the like, and almost all the silicon dioxide in the coolant enters vanadium slag in the converter vanadium extraction process to influence the quality of the vanadium slag.
The total iron component in the vanadium slag is not beneficial to the extraction of vanadium in the subsequent process of vanadium slag production, the total iron content of the vanadium slag is reduced, and the production cost of vanadium extraction in the subsequent process and the yield of vanadium are improved.
The binder used in the production of iron oxide pellets by CN201811550049.9 is a water-soluble organic binder, and comprises alpha starch, polyvinyl alcohol, polyacrylamide, xanthan gum and sodium carboxymethyl cellulose.
The binder for the vanadium extraction coolant produced by CN201811236439.9 is a liquid organic binder comprising polyvinyl alcohol, guar gum and water.
The binder used in the production of iron-containing dust and mud by CN200910038305.0 is: sodium silicate, bentonite and lime powder.
Cn201811068297.x binder for producing steel-making coolant is: portland cement, polyacrylamide, bentonite and starch.
When the coolant prepared by the prior art is used for extracting vanadium from a converter, the total iron content of vanadium slag is higher, the total iron content is more than 30%, and the binders used in CN200910038305.0 and CN201811068297.X contain a large amount of silicon dioxide components, so that the content of silicon dioxide in the vanadium slag is higher, the production cost of vanadium extraction in the subsequent process is increased, and the yield of vanadium is reduced.
Disclosure of Invention
The invention aims to solve the first technical problem of providing the application of nepheline ore as a binder in the preparation of a cooling agent for vanadium extraction of a converter.
Further, in the above use, the nepheline ore comprises the following main components: SiO 2250％～60％，Al2O320％～25％，Na2O 9％～12％。
The second technical problem to be solved by the invention is to provide a converter vanadium extraction coolant, and raw materials comprise iron-containing materials and nepheline ore. The nepheline ore is crushed into powder with the grain size not larger than 1 mm.
Furthermore, in the converter vanadium extraction coolant, raw materials comprise an iron-containing material, nepheline ore and water.
Further, in the above cooling agent for extracting vanadium from a converter, the iron-containing material is at least one of iron scale, converter fly ash or continuous casting cutting slag.
Further, in the converter vanadium extraction coolant, the nepheline ore accounts for 4-6% of the total mass of the raw materials.
Further, in the converter vanadium extraction coolant, the water accounts for 5-10% of the total mass of the raw materials.
Further, in the above coolant for extracting vanadium from a converter, the main components of the coolant are as follows: 56-65% of total iron, less than or equal to 1.0% of calcium oxide, less than or equal to 8.0% of silicon dioxide, less than or equal to 1.0% of water, Al2O31％～1.5％，Na2O 0.4％～0.6％。
The third technical problem to be solved by the invention is to provide a production method of the converter vanadium extraction coolant. The method comprises the following steps: mixing iron-containing material, nepheline and water, pressing into balls, and drying.
Further, in the production method of the converter vanadium extraction coolant, the mixing time is 5-15 minutes.
According to the converter vanadium extraction coolant produced by the invention, nepheline mineral powder is used as a binder, the cost is far lower than that of an organic binder and lower than that of bentonite, the mass fraction of silicon dioxide in the coolant can be reduced, the mass fraction of silicon dioxide in vanadium slag is further reduced by 1-2%, and the quality of the vanadium slag is improved; meanwhile, the nepheline ore contains aluminum oxide and sodium oxide, so that the melting point of vanadium slag extracted by a converter can be reduced, the total iron content of the vanadium slag is reduced by 1-2%, and the quality of the vanadium slag is improved.
Detailed Description
The converter vanadium extraction coolant provided by the invention is prepared by dry mixing several iron-containing materials, namely iron scale, at least one of converter dust or continuous casting cutting slag, for 5-15 minutes, adding water and a binder nepheline after dry mixing, and then performing wet mixing for 5-15 minutes, wherein the binder accounts for 4% -6% of the total mass of the raw materials, and the water accounts for 5% -10% of the total mass of the raw materials, the used materials are mixed uniformly and then enter a press roll to be pressed into coolant balls, and the coolant balls are dried for 3-7 days in a natural ventilation position. The total mass of the raw materials is the total mass of water, the iron-containing material and the adhesive nepheline ore.
The nepheline ore used in the embodiment of the invention is from Liangshan, Sichuan province, and the ingredient is SiO257.3％，Al2O323.5％，Na2O11.4％。
Examples
In a certain steel mill, vanadium extracting coolant is produced, and the material proportion by mass percent is as follows: 75% of iron scale, 15% of dust removal ash, 5% of water and 5% of nepheline ore, and the mass percentage of the produced coolant total iron is as follows: 61.5 percent of total iron, 5.6 percent of silicon dioxide, 0.7 percent of calcium oxide, 1.1 percent of aluminum oxide and 0.5 percent of sodium oxide.
140 tons of molten iron, 4.2 percent of molten iron C, 0.15 percent of Si, 0.21 percent of Mn, 0.299 percent of V and 0.21 percent of Ti are added into a 120-ton vanadium extraction converter, 4.6 tons of vanadium extraction cooling agent is added, oxygen blowing is carried out for 5.8 minutes, the end point temperature of vanadium extraction is 1390 ℃, 0.024 percent of semisteel V, 13.8 percent of silicon dioxide in vanadium slag is reduced by 1.3 percent, and 28.5 percent of total iron in the vanadium slag is reduced by 1.8 percent.
Comparative example
The material ratio mass percentage is: 75% of iron scale, 15% of dedusting ash, 5% of water and 5% of bentonite, and the mass percentage of the total iron in the produced coolant is as follows: 61.5 percent of total iron, 7.8 percent of silicon dioxide and 0.7 percent of calcium oxide. 15.1 percent of silicon dioxide in the vanadium slag and 30.3 percent of total iron in the vanadium slag.
Claims (10)
1. Use of nepheline ore as a binder in the preparation of a converter vanadium extraction coolant.
2. Use according to claim 1, characterized in that: the nepheline ore comprises the following main components: SiO 2250％～60％，Al2O320％～25％，Na2O 9％～12％。
3. The converter vanadium extraction coolant is characterized in that: the raw materials include iron-containing materials and nepheline ore.
4. The converter vanadium extraction coolant according to claim 3, characterized in that: the raw materials include iron-containing material, nepheline ore and water.
5. The converter vanadium extraction coolant according to claim 3 or 4, characterized in that: the iron-containing material is at least one of iron scale, converter fly ash or continuous casting cutting slag.
6. The converter vanadium extraction coolant according to claim 4 or 5, characterized in that: the nepheline ore accounts for 4 to 6 percent of the total mass of the raw materials; further, the nepheline ore is powdery with the grain diameter not more than 1 mm.
7. The coolant for vanadium extraction of a converter according to any one of claims 4 to 6, characterized in that: the water accounts for 5-10% of the total mass of the raw materials.
8. The coolant for vanadium extraction of a converter according to any one of claims 3 to 7, characterized in that: the main components of the coolant are as follows: 56-65% of total iron, less than or equal to 1.0% of calcium oxide, less than or equal to 8.0% of silicon dioxide, less than or equal to 1.0% of water, Al2O31％～1.5％，Na2O 0.4％～0.6％。
9. The production method of the converter vanadium extraction coolant is characterized by comprising the following steps: the method comprises the following steps: mixing iron-containing material, nepheline and water, pressing into balls, and drying.
10. The method for producing the coolant for extracting vanadium from the converter according to claim 9, wherein: the mixing time is 5-15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703188.1A CN111647706B (en) | 2020-07-21 | 2020-07-21 | Converter vanadium extraction coolant and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703188.1A CN111647706B (en) | 2020-07-21 | 2020-07-21 | Converter vanadium extraction coolant and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111647706A true CN111647706A (en) | 2020-09-11 |
| CN111647706B CN111647706B (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010703188.1A Active CN111647706B (en) | 2020-07-21 | 2020-07-21 | Converter vanadium extraction coolant and production method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7905220A (en) * | 1978-08-22 | 1980-04-29 | G Crespi | SYNTHETIC FLOW FOR STEEL ESORIA AND FLUIDIFICATION PROCESS OF A STEEL DROP |
| CN1380428A (en) * | 2002-01-24 | 2002-11-20 | 黄贤耀 | Method for extracting vanadium by roasting material containing vanadium and its equipment |
| CN102796840A (en) * | 2012-07-11 | 2012-11-28 | 攀钢集团研究院有限公司 | Coolant for dephosphorizing and extracting vanadium of converter, production method thereof, and method for dephosphorizing and extracting vanadium of converter |
| CN110894566A (en) * | 2018-09-13 | 2020-03-20 | 中冶宝钢技术服务有限公司 | Steelmaking coolant and preparation method thereof |
| CN110904346A (en) * | 2019-12-17 | 2020-03-24 | 攀枝花钢城集团有限公司 | Sodium-containing vanadium extraction coolant and preparation method and application thereof |
| CN111349797A (en) * | 2020-03-18 | 2020-06-30 | 玉溪新兴钢铁有限公司 | Method for extracting vanadium from ultra-low silicon vanadium-titanium molten iron by converter |
-
2020
- 2020-07-21 CN CN202010703188.1A patent/CN111647706B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7905220A (en) * | 1978-08-22 | 1980-04-29 | G Crespi | SYNTHETIC FLOW FOR STEEL ESORIA AND FLUIDIFICATION PROCESS OF A STEEL DROP |
| CN1380428A (en) * | 2002-01-24 | 2002-11-20 | 黄贤耀 | Method for extracting vanadium by roasting material containing vanadium and its equipment |
| CN102796840A (en) * | 2012-07-11 | 2012-11-28 | 攀钢集团研究院有限公司 | Coolant for dephosphorizing and extracting vanadium of converter, production method thereof, and method for dephosphorizing and extracting vanadium of converter |
| CN110894566A (en) * | 2018-09-13 | 2020-03-20 | 中冶宝钢技术服务有限公司 | Steelmaking coolant and preparation method thereof |
| CN110904346A (en) * | 2019-12-17 | 2020-03-24 | 攀枝花钢城集团有限公司 | Sodium-containing vanadium extraction coolant and preparation method and application thereof |
| CN111349797A (en) * | 2020-03-18 | 2020-06-30 | 玉溪新兴钢铁有限公司 | Method for extracting vanadium from ultra-low silicon vanadium-titanium molten iron by converter |
Non-Patent Citations (1)
| Title |
|---|
| 汪镜亮: "长石和霞石正长岩的应用情况及前景", 《矿产综合利用》 * |
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| CN111647706B (en) | 2022-01-28 |
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