CN110904346A - Sodium-containing vanadium extraction coolant and preparation method and application thereof - Google Patents
Sodium-containing vanadium extraction coolant and preparation method and application thereof Download PDFInfo
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- CN110904346A CN110904346A CN201911300991.4A CN201911300991A CN110904346A CN 110904346 A CN110904346 A CN 110904346A CN 201911300991 A CN201911300991 A CN 201911300991A CN 110904346 A CN110904346 A CN 110904346A
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- sodium
- vanadium extraction
- coolant
- containing vanadium
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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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- C21C5/36—Processes yielding slags of special composition
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a sodium-containing vanadium extraction coolant, a preparation method and application thereof, belonging to the technical field of ferrous metallurgy. The invention provides a sodium-containing vanadium extraction coolant which comprises the following components in parts by weight: 40-80 parts of iron oxide and 5-30 parts of sodium carbonate. Compared with the existing coolant, the sodium-containing vanadium extraction coolant provided by the invention has the advantages of obviously reducing the iron content of vanadium slag and improving the yield of molten iron.
Description
Technical Field
The invention relates to a sodium-containing vanadium extraction coolant, a preparation method and application thereof, belonging to the technical field of ferrous metallurgy.
Background
Vanadium is an important resource, and in order to ensure effective utilization of the vanadium, for molten iron with high vanadium content, vanadium extraction is usually performed before steel making, namely vanadium in the molten iron is oxidized into high-price stable vanadium oxide to prepare vanadium slag by utilizing the principle of selective oxidation. At present, the production methods for preparing vanadium slag at home and abroad are more, and mainly comprise a new zealand ladle vanadium blowing process, a south Africa ladle vanadium extraction process, a Russian and Chinese converter vanadium extraction process and the like. Wherein, the process for extracting vanadium by the converter is optimal, and the technical and economic indexes are the best. The vanadium extraction of the converter is an exothermic process, wherein the oxidation temperature of carbon and vanadium is about 1385 ℃, therefore, a vanadium extraction coolant is required to be added during smelting to control the temperature of a molten pool, so that the temperature of the molten pool is kept below the carbon-vanadium conversion temperature, and the aims of 'vanadium removal and carbon protection' are achieved.
At present, common vanadium extracting coolants comprise common iron ores, waste steel, iron oxide scales, cold bonded pellets and the like. In order to ensure the grade of the vanadium slag, the components of the coolant are strictly limited, and the conventional components for reducing the melting point of the slag cannot be added, so that the iron content of the vanadium slag is higher, the iron loss is caused, and the iron removal cost of the subsequent vanadium slag vanadium extraction process is increased.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a sodium-containing vanadium extraction coolant, and a preparation method and application thereof.
The invention provides a sodium-containing vanadium extraction coolant which comprises the following components in parts by weight: 40-80 parts of iron oxide and 5-30 parts of sodium carbonate.
Further, the iron oxide is selected from at least one of iron scale, continuous casting cutting slag and steelmaking dust.
Further, the sodium-containing vanadium extraction coolant comprises the following chemical components in percentage by mass: 40-80% of TFe, 5-30% of FeO and Na2CO35～20％。
Further, the sodium-containing vanadium extraction coolant also comprises 5-8 parts of a binding agent.
Further, the particle size of the coolant is 20-80 mm.
The invention provides a preparation method of a sodium-containing vanadium extraction coolant, which comprises the following steps: taking the components in the weight ratio, mixing uniformly, and pressing and forming to obtain the product.
Further, the preparation method comprises the following steps: taking the iron oxide, the sodium carbonate and the binding agent according to the weight ratio, stirring and mixing the materials, simultaneously adding water, and pressing the uniformly mixed wet materials into pellets to obtain the pellet.
Preferably, 5-15 parts of water is added.
Preferably, the wet material is pressed into pellets by means of a pair of rolls under high pressure.
The invention provides application of the sodium-containing vanadium extraction coolant in vanadium extraction of vanadium-containing molten iron.
The invention provides application of sodium carbonate in preparing a vanadium extraction coolant.
Compared with the existing coolant, the sodium-containing vanadium extraction coolant provided by the invention has the advantages of obviously reducing the iron content of vanadium slag and improving the yield of molten iron. In addition, for the vanadium slag vanadium extraction process, the ball milling deironing and the sodium roasting of the vanadium slag are two key processes, and the sodium-containing vanadium extraction coolant can bring the following benefits for the key processes: 1. the TFe content in the vanadium slag is reduced, so that the cost of ball milling and iron removal of the vanadium slag can be reduced; 2. because part of sodium carbonate is added in the vanadium extraction process and forms a compound with vanadium slag, the addition amount of sodium salt in the sodium salt roasting process can be reduced, and the further reduction of energy consumption and production cost is facilitated.
Detailed Description
The invention provides a sodium-containing vanadium extraction coolant which comprises the following components in parts by weight: 40-80 parts of iron oxide and 5-30 parts of sodium carbonate.
The cooling agent can reduce the melting point of the vanadium slag by adding sodium carbonate into the iron oxide, and is beneficial to the entry of iron in the vanadium slag into molten iron, thereby reducing the iron content of the vanadium slag, improving the yield of the molten iron and reducing the iron removal cost of the subsequent process. Meanwhile, as part of sodium carbonate is added in the vanadium extraction process and forms a compound with the vanadium slag, the addition amount of sodium salt in the vanadium slag sodium salt roasting process can be reduced, and the energy consumption and the production cost are favorably reduced.
In the coolant, the addition amount of sodium carbonate is a key factor influencing the cooling and slag-regulating effect. According to tests, when the addition amount of sodium carbonate exceeds 20%, the coolant is difficult to form and cannot meet the use requirement; if the amount of the sodium carbonate is too low, the slag state adjusting effect is not obvious, and the iron content of the vanadium slag cannot be effectively reduced.
The scheme of the invention will be explained with reference to the examples. It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1 extraction of vanadium from vanadium-containing molten iron by using the coolant of the present invention
Preparing a coolant: taking 400kg of iron scale, 50kg of sodium carbonate and 25kg of binding agent, mixing, blending, mechanically stirring and mixing the blended materials, simultaneously adding 30kg of water, and pressing the uniformly mixed materials into balls under high pressure by a pair of rollers to obtain the sodium-containing vanadium-extracting coolant.
Vanadium extraction from molten iron: in the process of vanadium extraction from molten iron, the sodium-containing vanadium extraction coolant pellets are added according to 35kg of steel per ton, so that the temperature of the molten iron is ensured to be within a controllable range.
Through detection, the total iron content of the obtained vanadium slag is 23%; meanwhile, the recovery rate of sodium carbonate entering vanadium slag in the coolant reaches more than 97%. Compared with the prior art, the vanadium slag has the advantage that the total iron content is usually about 27 percent by adopting common iron ore, scrap steel, iron scale or cold bonded pellets as a coolant.
It should be appreciated that the particular features, structures, materials, or characteristics described in this specification may be combined in any suitable manner in any one or more embodiments. Furthermore, the various embodiments and features of the various embodiments described in this specification can be combined and combined by one skilled in the art without contradiction.
Claims (9)
1. The sodium-containing vanadium extraction coolant is characterized in that: comprises the following components in parts by weight: 40-80 parts of iron oxide and 5-30 parts of sodium carbonate.
2. The sodium-containing vanadium extraction coolant as set forth in claim 1, characterized in that: the iron oxide is selected from at least one of iron scale, continuous casting cutting slag and steelmaking dust removal ash.
3. The sodium-containing vanadium extraction coolant as claimed in claim 1 or 2, characterized in that: chemical components in percentage by massThe meter contains: 40-80% of TFe, 5-30% of FeO and Na2CO35～20％。
4. The sodium-containing vanadium extraction coolant as claimed in any one of claims 1 to 3, characterized in that: and 5-8 parts of a binding agent.
5. The sodium-containing vanadium extraction coolant as set forth in claim 1, characterized in that: the particle size of the coolant is 20-80 mm.
6. The method for preparing the sodium-containing vanadium extraction coolant as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps: the method comprises the following steps: taking the components in the weight ratio, mixing uniformly, and pressing and forming to obtain the product.
7. The method of claim 6, wherein: the method comprises the following steps: taking the iron oxide, the sodium carbonate and the binding agent according to the weight ratio, stirring and mixing the materials, simultaneously adding water, and pressing the uniformly mixed wet materials into pellets to obtain the pellet; preferably, 5-15 parts of water is added; preferably, the wet material is pressed into pellets by means of a pair of rolls under high pressure.
8. The use of the sodium-containing vanadium extraction coolant of any one of claims 1 to 5 for extracting vanadium from vanadium-containing molten iron.
9. Use of sodium carbonate in the manufacture of a vanadium extraction coolant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300991.4A CN110904346A (en) | 2019-12-17 | 2019-12-17 | Sodium-containing vanadium extraction coolant and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911300991.4A CN110904346A (en) | 2019-12-17 | 2019-12-17 | Sodium-containing vanadium extraction coolant and preparation method and application thereof |
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| CN110904346A true CN110904346A (en) | 2020-03-24 |
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| CN201911300991.4A Pending CN110904346A (en) | 2019-12-17 | 2019-12-17 | Sodium-containing vanadium extraction coolant and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647706A (en) * | 2020-07-21 | 2020-09-11 | 攀钢集团攀枝花钢钒有限公司 | Converter vanadium extraction coolant and production method thereof |
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| CN102251068A (en) * | 2011-07-08 | 2011-11-23 | 攀钢集团有限公司 | Vanadium-extracting cooling agent and preparation method thereof |
| 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 |
| CN110042191A (en) * | 2019-05-14 | 2019-07-23 | 成都先进金属材料产业技术研究院有限公司 | The method of converter producing vanadium slag containing sodium and its Oxidation Leaching |
| CN110055372A (en) * | 2019-05-14 | 2019-07-26 | 成都先进金属材料产业技术研究院有限公司 | Using the extraction vanadium method of compounds containing sodium processing vanadium-bearing hot metal |
| CN110106307A (en) * | 2019-05-14 | 2019-08-09 | 成都先进金属材料产业技术研究院有限公司 | Using the extraction vanadium method of sodium salt processing vanadium-bearing hot metal |
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2019
- 2019-12-17 CN CN201911300991.4A patent/CN110904346A/en active Pending
Patent Citations (5)
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| CN102251068A (en) * | 2011-07-08 | 2011-11-23 | 攀钢集团有限公司 | Vanadium-extracting cooling agent and preparation method thereof |
| 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 |
| CN110042191A (en) * | 2019-05-14 | 2019-07-23 | 成都先进金属材料产业技术研究院有限公司 | The method of converter producing vanadium slag containing sodium and its Oxidation Leaching |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647706A (en) * | 2020-07-21 | 2020-09-11 | 攀钢集团攀枝花钢钒有限公司 | Converter vanadium extraction coolant and production method thereof |
| CN111647706B (en) * | 2020-07-21 | 2022-01-28 | 攀钢集团攀枝花钢钒有限公司 | Converter vanadium extraction coolant and production method thereof |
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Application publication date: 20200324 |