CN111996311A - Vanadium extraction coolant and preparation method thereof - Google Patents
Vanadium extraction coolant and preparation method thereof Download PDFInfo
- Publication number
- CN111996311A CN111996311A CN202010878244.5A CN202010878244A CN111996311A CN 111996311 A CN111996311 A CN 111996311A CN 202010878244 A CN202010878244 A CN 202010878244A CN 111996311 A CN111996311 A CN 111996311A
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- China
- Prior art keywords
- vanadium extraction
- coolant
- vanadium
- extraction coolant
- gas ash
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/02—General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
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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
-
- 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
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
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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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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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)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a vanadium extraction coolant and a preparation method thereof, belonging to the technical field of steel smelting. Specifically, the vanadium extraction coolant consists of the following components in percentage by weight: 95-99 wt% of gas ash and 1-5 wt% of a binder. The invention takes the gas ash as the main raw material of the vanadium extraction coolant, which is not only beneficial to reducing the harm to the operation of the blast furnace, but also beneficial to the comprehensive utilization of the gas ash.
Description
Technical Field
The invention belongs to the technical field of steel smelting, and particularly relates to a vanadium extraction coolant and a preparation method thereof.
Background
The Panxi area has rich vanadium-titanium magnetite resources, the reserve of the vanadium-titanium magnetite resources accounts for more than 95% of the reserve of the whole China, the vanadium-titanium-iron concentrate produced by Panxi steel is about 700 million tons every year, and the vanadium-titanium-iron concentrate produced by peripheral civil enterprises is more than 300 million tons. The vanadium content of the molten iron produced by smelting the vanadium-titanium concentrate in the blast furnace is up to more than 0.3 percent compared with that of the molten iron produced by smelting common ore.
At present, the production process of vanadium extraction in converters at home and abroad mainly optimizes vanadium extraction operation by adding a coolant and controlling process temperature and blowing time. The vanadium extraction of the converter is an exothermic process, the oxidation of elements such as silicon, vanadium, carbon and the like causes the temperature of a molten pool in the converter to be rapidly raised, the oxidation of silicon and manganese occurs before the vanadium is oxidized, and the oxidation temperature of carbon and vanadium is about 1385 ℃, so that the temperature of the molten pool must be controlled by adding a vanadium extraction coolant in the reaction process to achieve the purpose of carbon and vanadium conversion in order to obtain high oxidation rate and yield of vanadium.
For vanadium extraction, the temperature of molten iron is the key point of vanadium conversion in the vanadium extraction process. The cooling of the molten iron mainly comprises adding a coolant into the molten iron, and the currently common coolant comprises: ordinary iron ore, scrap steel, iron scale, cold bonded pellet and the like, and the steel climbing mainly adopts the cold bonded pellet and the scrap steel as a coolant.
The gas ash is gravity dedusting ash collected by blast furnace dedusting, and is generally used for sintering ingredients to produce sinter which is used for the blast furnace, but the zinc content of the sinter easily causes blast furnace irregularity, thus seriously affecting the safe and stable production of the blast furnace; at present, no report on the use of the vanadium extracting coolant is found.
Disclosure of Invention
The invention aims to provide a novel vanadium extraction coolant.
The vanadium extraction coolant consists of the following components in percentage by weight: 95-99 wt% of gas ash and 1-5 wt% of a binder.
The vanadium extraction coolant comprises the following components in percentage by weight: 97 wt% of gas ash and 3 wt% of binding agent.
Wherein, in the gas ash, TFe30-50 wt%, FeO 5-10 wt%, SiO25-10 wt％，CaO 5-10wt％，V2O50.2-0.5wt％，C 9-20wt％，MgO 1-3wt％，Al2O32-3 wt％，ZnO 2-10wt％。
Wherein, in the vanadium extraction coolant, the bonding agent is bentonite, cement or diatomite.
Wherein, in the vanadium extraction coolant, the bonding agent is bentonite.
Wherein, in the bentonite, the vanadium extracting coolant contains Fe2O32-5wt％，SiO250-60 wt％，CaO 4-6wt％，MgO 3-5wt％，Al2O313-15 wt％。
The preparation method of the vanadium extraction coolant comprises the following steps: mixing the gas ash and the binding agent uniformly and then pressing the mixture into balls.
In the using method of the vanadium extraction coolant, the addition amount of the vanadium extraction coolant is 2-20 kg/t iron.
The invention has the beneficial effects that:
the invention takes the gas ash as the main raw material of the vanadium extraction coolant, which is beneficial to reducing the harm to the operation of a blast furnace and the comprehensive utilization of the gas ash, the ferrous oxide contained in the gas ash can improve the fluidity of slag and can reduce the temperature of molten iron, and the C contained in the gas ash is beneficial to increasing the C of the molten iron. The method can fully and effectively utilize the gas ash, save the cost, adapt to the production requirement of vanadium extraction of the converter and be beneficial to the maximization of the utilization of resources.
Detailed Description
The gas ash contains a certain amount of zinc, and when the gas ash is used as a zinc extraction raw material, the zinc content is low, the cost is increased, and the environmental pollution can be caused by independent stacking, so the gas ash is generally returned to sintering ingredients for utilization, and the zinc in the gas ash is brought into a blast furnace through sintering ores, which is unfavorable for the stable and safe operation of the blast furnace.
The invention provides a vanadium extraction coolant which comprises the following components in percentage by weight: 95-99 wt% of gas ash and 1-5 wt% of a binder.
Preferably, the vanadium extraction coolant consists of the following components in percentage by weight: 97 wt% of gas ash and 3 wt% of binding agent.
TFe30-50 wt%, FeO 5-10 wt%, and SiO in the gas ash2 5-10wt％，CaO 5-10wt％，V2O50.2-0.5wt％，C 9-20wt％，MgO 1-3wt％，Al2O32-3 wt% of ZnO and 2-10 wt% of ZnO. The binding agent is selected from bentonite, cement or diatomite; in bentonite, Fe2O3 2-5wt％，SiO2 50-60wt％，CaO 4-6wt％，MgO 3-5wt％，Al2O3 13-15wt％。
The following examples are provided to further illustrate the embodiments of the present invention and are not intended to limit the scope of the present invention.
Example 1
97 wt% of gas ash and 3 wt% of bentonite are uniformly mixed and then pressed into balls to obtain the vanadium extraction coolant. 42 wt% of TFe, 8 wt% of FeO and SiO in the coolant pressed into balls2 5.5 wt％，CaO 6.1wt％，S 0.25wt％，V2O50.32 wt%, C12 wt% and ZnO 3.7 wt%, can completely meet the requirements for vanadium extraction and cooling.
Example 2
The coolant prepared in the example 1 is added according to 2kg/t iron, after the vanadium extraction coolant is adopted, the vanadium in the molten iron is reduced from 0.313 percent to 0.029 percent, and the V in the obtained vanadium slag is reduced2O5The content of (A) was 17.63%, and the TFe content was 29.7%.
Example 3
The coolant prepared in the example 1 is added according to 5kg/t iron, after the vanadium extraction coolant is adopted, the vanadium content in the molten iron is reduced from 0.321% to 0.030%, and the V content in the obtained vanadium slag is reduced2O5The content of (A) was 17.54%, and the TFe content was 30.1%.
Example 4
The coolant prepared in the example 1 is added according to 10kg/t iron, after the vanadium extraction coolant is adopted, the vanadium content in the molten iron is reduced from 0.295 percent to 0.030 percent, and the V content in the obtained vanadium slag is reduced2O5The content of (A) was 17.82%, and the TFe content was 29.1%.
Claims (8)
1. The vanadium extraction coolant is characterized by comprising the following components in percentage by weight: 95-99 wt% of gas ash and 1-5 wt% of a binder.
2. The vanadium extraction coolant as claimed in claim 1, which is composed of the following components in percentage by weight: 97 wt% of gas ash and 3 wt% of binding agent.
3. Vanadium extraction coolant according to claim 1 or 2, which isCharacterized in that TFe30-50 wt%, FeO 5-10 wt%, SiO in the gas ash2 5-10 wt％，CaO 5-10wt％，V2O5 0.2-0.5wt％，C 9-20wt％，MgO 1-3wt％，Al2O3 2-3 wt％，ZnO 2-10wt％。
4. The vanadium extraction coolant according to claim 1 or 2, wherein the binder is bentonite, cement or diatomaceous earth.
5. The vanadium extraction coolant of claim 4, wherein the binder is bentonite.
6. The vanadium extraction coolant of claim 5, wherein the bentonite has Fe in it2O3 2-5wt％，SiO250-60wt％，CaO 4-6wt％，MgO 3-5wt％，Al2O3 13-15 wt％。
7. The preparation method of the vanadium extraction coolant as claimed in any one of claims 1 to 6, characterized by comprising the following steps: mixing the gas ash and the binding agent uniformly and then pressing the mixture into balls.
8. The use method of the vanadium extraction coolant as set forth in any one of claims 1 to 6, characterized in that: the adding amount of the vanadium extraction coolant is 2-20 kg/t iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010878244.5A CN111996311A (en) | 2020-08-27 | 2020-08-27 | Vanadium extraction coolant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010878244.5A CN111996311A (en) | 2020-08-27 | 2020-08-27 | Vanadium extraction coolant and preparation method thereof |
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| CN111996311A true CN111996311A (en) | 2020-11-27 |
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| CN202010878244.5A Pending CN111996311A (en) | 2020-08-27 | 2020-08-27 | Vanadium extraction coolant and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103310A (en) * | 2011-11-11 | 2013-05-15 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| CN104789759A (en) * | 2014-01-16 | 2015-07-22 | 河南省远征冶金科技有限公司 | Metallurgical iron-containing powder material resource utilization method |
| CN105039636A (en) * | 2015-08-18 | 2015-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Calcium-bearing cooling agent for extracting vanadium and preparation method of calcium-bearing cooling agent |
| CN105714108A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Pellet binder and pellet produced therefrom |
| CN106755980A (en) * | 2016-12-14 | 2017-05-31 | 钢城集团凉山瑞海实业有限公司 | Coal-pressing ball and preparation method thereof |
-
2020
- 2020-08-27 CN CN202010878244.5A patent/CN111996311A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103310A (en) * | 2011-11-11 | 2013-05-15 | 攀钢集团西昌钢钒有限公司 | Vanadium extraction cold pressing block and preparation method and applications thereof and vanadium extraction method |
| CN104789759A (en) * | 2014-01-16 | 2015-07-22 | 河南省远征冶金科技有限公司 | Metallurgical iron-containing powder material resource utilization method |
| CN105714108A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Pellet binder and pellet produced therefrom |
| CN105039636A (en) * | 2015-08-18 | 2015-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Calcium-bearing cooling agent for extracting vanadium and preparation method of calcium-bearing cooling agent |
| CN106755980A (en) * | 2016-12-14 | 2017-05-31 | 钢城集团凉山瑞海实业有限公司 | Coal-pressing ball and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 张向宇: "《实用化学手册（第2版）》", 31 October 2011, 国防工业出版社 * |
| 张朝晖等: "《冶金资源综合利用》", 30 June 2011, 冶金工业出版社 * |
| 陈铁军等: "《现代烧结造块理论与工艺》", 31 January 2018, 冶金工业出版社 * |
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Application publication date: 20201127 |
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