CN109609719B - Method for extracting vanadium by binary gas supply converter - Google Patents
Method for extracting vanadium by binary gas supply converter Download PDFInfo
- Publication number
- CN109609719B CN109609719B CN201910093569.XA CN201910093569A CN109609719B CN 109609719 B CN109609719 B CN 109609719B CN 201910093569 A CN201910093569 A CN 201910093569A CN 109609719 B CN109609719 B CN 109609719B
- Authority
- CN
- China
- Prior art keywords
- blowing
- vanadium
- converting
- molten iron
- gas supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C21C5/30—Regulating or controlling the blowing
Abstract
The invention discloses a method for extracting vanadium by a binary gas supply converter, belonging to the technical field of ferrous metallurgy. The invention provides a binary gas supply converterThe vanadium extraction method adjusts the air supply blowing conditions aiming at different vanadium-titanium molten irons, thereby reducing the burning loss of residual vanadium and carbon, improving the vanadium oxidation rate and improving the quality of semi-steel. The invention adopts two different gases to carry out blowing according to different proportions, thereby solving the problems of high vanadium residue and V vanadium slag under the conditions of different temperatures and different silicon contents of molten iron2O5The method has the advantages of low problem, obviously reduced vanadium residue after vanadium extraction, obviously improved vanadium oxidation rate, improved semi-steel quality and good popularization and application prospect.
Description
Technical Field
The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a method for extracting vanadium by a binary gas supply converter.
Background
The vanadium-containing steel has the characteristics of high strength, good toughness, wear resistance, corrosion resistance and the like, and is widely applied to the industries of machine manufacturing, automobiles, aerospace, railways, bridges and the like. With the rapid development of economy in China, the demand of the market on vanadium-containing steel is greatly increased, and the increase of the yield of vanadium products such as high ferrovanadium, vanadium nitride and the like is driven. The Pan Steel group company is the second and domestic largest vanadium product producer in the world, and accounts for over 90 percent of the domestic market share. The vanadium extraction process for extracting vanadium element in the molten iron containing vanadium by adopting the converter is a current relatively common vanadium extraction process, and has the characteristics of high molten iron processing amount, high vanadium slag yield, stable vanadium slag quality and the like. The Pan Steel group company adopts the converter vanadium extraction process, and through more than twenty years of technical innovation and development, the vanadium extraction process is leading in China, and vanadium slag V2O5High content and less impurities. Pure oxygen is adopted for extracting vanadium from a converter and the like, blowing is carried out through an oxygen lance, and an oxidant is added to oxidize vanadium in molten iron into slag to form vanadium slag. When the temperature of molten iron is high and the heating element is high, a large amount of iron-containing materials and oxidant need to be added to control the process temperature, so that the effect of reducing residual vanadium is achieved, and simultaneously, a large amount of iron-containing materials and V in vanadium slag are consumed2O5Low carbon burning loss; when the iron content material resource is insufficient, no effective means and technology are available to control the temperature rise in the process, so that the residual vanadium is increased, the vanadium oxidation rate is reduced, and the vanadium recovery rate is reduced.
201810084272.2 discloses a vanadium extraction method by a composite gas supply converter, which comprises the following steps: blowing mixed gas of oxygen and nitrogen through an oxygen lance to carry out converting after the vanadium-containing molten iron enters the converter, adopting a high lance position in a time period from the beginning of converting to 0.5-1.0 min after the beginning of converting, adopting a low robbing position in a time period from 0.5-1.0 min after the beginning of converting to 1-1.5 min before the end of converting, adopting the high lance position from 1-1.5 min before the end of converting to the end of converting, and controlling the gas supply intensity of the mixed gas to be 2.5-3.5 m3V (min. t vanadium-containing molten iron); the vanadium extraction coolant is added within 2min after the start of blowing. 201810338522.0 discloses a method for extracting vanadium by sectional gas supply of a converter, which comprises the following steps: blowing the vanadium-containing molten iron into a converter through an oxygen lance to blow air, wherein the position of the oxygen lance is constant during blowing, the blowing process is divided into three stages, oxygen is adopted for blowing from the beginning of blowing to 2.5-3.0 min, then nitrogen is adopted for continuously blowing for 2.0-3.0 min, and finally oxygen is adopted for continuously blowing for 2.0-2.5 min.
Therefore, a converter vanadium extraction technology capable of reducing residual vanadium and improving vanadium oxidation rate without increasing the consumption of oxidant and iron-containing materials is needed.
Disclosure of Invention
The invention aims to solve the technical problem of how to adjust the air supply blowing condition aiming at different vanadium-titanium molten irons, thereby reducing the burning loss of residual vanadium and carbon, improving the vanadium oxidation rate and improving the quality of semi-steel.
The technical scheme adopted by the invention for solving the technical problems is to provide a method for extracting vanadium by a binary gas supply converter, and the method determines gas supply converting conditions according to the silicon content and the temperature of vanadium-containing molten iron, and specifically comprises the following steps:
when the Si content of the vanadium-titanium molten iron is less than 0.15 wt% and the temperature is 1280-1300 ℃, blowing oxygen through an oxygen lance to blow gas for converting, and blowing O in the period of 60-120 s from the beginning of converting to the end of converting2(ii) a From 60 to 120s before the end of converting toBlowing O within the blowing finishing time period2And N2Mixed gas of N2The consumption proportion is 20-40%; the vanadium extraction coolant is added within 2min after the start of blowing;
when the Si content of the vanadium-titanium molten iron is more than or equal to 0.15 wt% and the temperature is 1280-1300 ℃, blowing oxygen through an oxygen lance to blow gas for converting, and blowing O in the period from the start of converting to 60-120 s after the start of converting2(ii) a Blowing O in the period from 60-120 s after the start of blowing to 60-120 s before the end of blowing2And N2Mixed gas of N2The consumption proportion is 10-30%; blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 20-40%; the vanadium extraction coolant is added within 2min after the start of blowing;
when the temperature of the vanadium-titanium molten iron is higher than 1300 ℃, blowing oxygen by an oxygen lance to blow gas for converting after the vanadium-containing molten iron enters the converter, and blowing O in the period of 60-120 s from the beginning of converting to the end of converting2And N2Mixed gas of N2The consumption proportion is 20-30%; blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 30-40%; the vanadium extraction coolant is added within 2min after the start of blowing.
In the method for extracting vanadium by using the binary gas supply converter, when the molten vanadium-titanium iron Si is less than 0.15 wt% and the temperature is 1280-1300 ℃, the oxygen flow is 16500-18500 m in a period of 60-120 s from the beginning of blowing to the end of blowing3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 4500-8500 m3/h。
Wherein in the method for extracting vanadium by the binary gas supply converter, when the molten vanadium-titanium iron Si is more than or equal to 0.15 wt% and the temperature is 1280-1300 ℃, the oxygen flow is 16500-18500 m within a period of time from the beginning of blowing to 60-120 s after the beginning of blowing3H; the oxygen flow is 14000-15500 m in the period from 60-120 s after the start of converting to 60-120 s before the end of converting3H, nitrogen flow 1800～6500m3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 4500-8500 m3/h。
In the method for extracting vanadium by using the binary gas supply converter, when the temperature of molten vanadium-titanium iron is higher than 1300 ℃, the oxygen flow is 13600-14500 m in a time period of 60-120 s from the beginning of blowing to the end of blowing3The nitrogen flow is 4500-7500 m3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 5500-9000 m3/h。
In the method for extracting vanadium by the binary gas supply converter, the charging amount of the vanadium-containing molten iron is 130-150 t.
Wherein, in the method for extracting vanadium by the binary gas supply converter, the whole blowing time is 5.0 min-7.5 min.
In the method for extracting vanadium by using the binary gas supply converter, the dosage of the vanadium extraction coolant is 25-40 kg/t of vanadium-containing molten iron.
Wherein, in the method for extracting vanadium by the binary gas supply converter, the blowing end temperature is 1360-1410 ℃.
The invention has the beneficial effects that:
the invention adopts two different gases to mix through the pipeline according to different proportions and enter the oxygen lance for blowing, thereby solving the problems of high residual vanadium and V-slag under the conditions of different temperatures and different silicon contents of molten iron2O5Low problems; on the premise of not adding any other coolant, the converter adopts an oxygen lance with a binary gas supply method to carry out blowing vanadium extraction, the residual vanadium after vanadium extraction is obviously reduced (reduced to about 10 percent), the vanadium oxidation rate is obviously improved (improved to more than 90 percent), and the semi-steel quality is improved; the method can be used for correspondingly and accurately treating the molten iron under different conditions, has strong practical operability and has good popularization and application prospects.
Detailed Description
Aiming at vanadium-containing molten iron with different silicon contents and temperatures, in order to improve the vanadium oxidation rate as much as possible and reduce carbon burning loss, an inventor accurately controls the carbon-vanadium conversion process, and because inert gas (nitrogen) is mixed with oxygen to reduce the oxygen content, the temperature rise speed of a heating element in the molten iron after reaction with the oxygen can be slowed down, and the vanadium conversion temperature time is prolonged, so the inventor can prolong the temperature time through controlling the components of converting gas, so that vanadium in the molten iron can more fully react, and the method specifically comprises the following steps:
when the Si content of the vanadium-titanium molten iron is less than 0.15 wt% and the temperature is 1280-1300 ℃, in order to avoid the insufficient end point temperature and the high carbon burning loss, the vanadium-containing molten iron is blown by an oxygen lance for converting after entering the converter, and the blowing O is blown in the period of 60-120 s from the beginning of converting to the end of converting2(ii) a Blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 20-40%; the vanadium extraction coolant is added within 2min after the start of blowing;
when the Si content of the vanadium-titanium molten iron is more than or equal to 0.15 wt% and the temperature is 1280-1300 ℃, in order to avoid high carbon burning loss, blowing the air jet body through an oxygen lance to carry out blowing after the vanadium-containing molten iron enters the converter, and blowing and jetting O in a period of 60-120 s from the beginning of blowing to the beginning of blowing2(ii) a Blowing O in the period from 60-120 s after the start of blowing to 60-120 s before the end of blowing2And N2Mixed gas of N2The consumption proportion is 10-30%; blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 20-40%; the vanadium extraction coolant is added within 2min after the start of blowing;
when the temperature of the vanadium-titanium molten iron is higher than 1300 ℃, after the vanadium-containing molten iron enters the converter, in order to avoid that the temperature rises too fast in the blowing process and the residual vanadium is higher, blowing the gas by an oxygen lance to carry out blowing, and blowing O in the period of 60-120 s from the beginning of blowing to the end of blowing2And N2Mixed gas of N2The consumption proportion is 20-30%; blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 30-40%; the vanadium extraction coolant is added within 2min after the start of blowing.
In order to facilitate more accurate control of the respective gas amounts,when the Si content of the molten vanadium-titanium iron is less than 0.15 wt% and the temperature is 1280-1300 ℃, the oxygen flow is 16500-18500 m in the period of 60-120 s from the beginning of blowing to the end of blowing3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 4500-8500 m3/h。
When the Si content of the molten vanadium-titanium iron is more than or equal to 0.15 wt% and the temperature is 1280-1300 ℃, the oxygen flow is 16500-18500 m in the period from the beginning of blowing to 60-120 s after the beginning of blowing3H; the oxygen flow is 14000-15500 m in the period from 60-120 s after the start of converting to 60-120 s before the end of converting3The nitrogen flow is 1800-6500 m3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 4500-8500 m3/h。
When the temperature of the vanadium-titanium molten iron is higher than 1300 ℃, the oxygen flow is 13600-14500 m in the time period of 60-120 s from the beginning of blowing to the end of blowing3The nitrogen flow is 4500-7500 m3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 5500-9000 m3/h。
In the binary gas supply converter vanadium extraction method provided by the invention, the charging amount of the vanadium-containing molten iron is 130-150 t.
In the method for extracting vanadium by the binary gas supply converter, the whole blowing time is 5.0 min-7.5 min.
The method does not increase extra vanadium extraction coolant, and the using amount of the vanadium extraction coolant is generally 25-40 kg/t vanadium-containing molten iron.
The method of the invention avoids the situation of insufficient end point temperature by accurately controlling the converting process, and simultaneously, the over-high end point temperature can not occur, and vanadium in the slag reversely reacts and enters the semisteel, so that the vanadium content of the semisteel is high, the vanadium oxidation rate is reduced, and the converting end point temperature is controlled to be 1360-1410 ℃.
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
0.25 wt% of vanadium-containing molten iron and silicon, the molten iron temperature is 1303 ℃, 140t of vanadium-containing molten iron is blown into a 120 t converter by an oxygen lance to blow, and firstly, O is blown2And N2Mixed gas of N2The consumption proportion is 20 percent, and the oxygen flow is controlled to be 15000m3Flow rate of nitrogen 4500 m/h3H; after blowing for 4.5min, the oxygen flow is adjusted to 13500m3Per, nitrogen flow 6500m3H, at this time O2And N2Mixed gas of N2Blowing for 1min when the consumption proportion is 30 percent; the whole blowing time is 5.5 min; controlling the unit consumption of a vanadium extraction coolant to be 30kg/t of vanadium-containing molten iron, and adding the vanadium-containing molten iron in batches within 2min after blowing begins; 3.76 percent of semi-steel end point carbon, 1385 ℃, 0.029 percent of residual vanadium, 11.7 percent of carbon burnout rate and 91.3 percent of vanadium oxidation rate.
Example 2
0.13 wt% of vanadium-containing molten iron and silicon, 1296 ℃ of molten iron and 140t of vanadium-containing molten iron are blown by an oxygen lance after being put into a 120-ton converter for blowing. First blowing pure O2Gas, control oxygen flow 17500m3H; after blowing for 4.0min, O was adjusted2And N2Mixing gas, controlling oxygen flow to 14500m3Flow rate of nitrogen 5200m3/h，N2The consumption proportion is 22 percent; controlling the unit consumption of a vanadium extraction coolant to be 26kg/t of vanadium-containing molten iron, and adding the vanadium-containing molten iron in batches within 2min after blowing begins; 3.82 percent of semi-steel end point carbon, 1382 ℃, 0.026 percent of residual vanadium, 10.8 percent of carbon burn-out rate and 91.5 percent of vanadium oxidation rate.
Example 3
0.18 wt% of vanadium-containing molten iron and silicon, the temperature of the molten iron is 1290 ℃, 140t of vanadium-containing molten iron enters a 120 t converter, the oxygen lance blows a jet gas for converting, firstly, O is blown2Gas, control oxygen flow 17300m3H; after blowing for 2.0min, O was adjusted2And N2Mixing gas, controlling oxygen flow to 14500m3Per hour, nitrogen flow 4300m3/h，N2The consumption proportion is 18 percent, and the blowing time is 2.0 min; finally, for 1.5min, the oxygen flow is controlled to 13800m3/h, nitrogen flow 5600m3/h，N2The consumption proportion is 25%; controlling the unit consumption of the vanadium extraction coolant to be 28kg/t of vanadium-containing molten iron,adding the raw materials in batches within 2min from the beginning of blowing; 3.75 percent of semi-steel end point carbon, 1380 percent of temperature, 0.028 percent of residual vanadium, 11.1 percent of carbon burnout rate and 91.2 percent of vanadium oxidation rate.
Comparative example 1
0.25 percent of vanadium-containing molten iron and silicon, the temperature of the molten iron is 1303 ℃, and 140t of vanadium-containing molten iron enters a converter, and pure O is blown and sprayed by an oxygen lance2Blowing was carried out at an oxygen flow of 18200m3And h, controlling the unit consumption of a coolant to be 28kg/t of vanadium-containing molten iron, blowing the molten iron for 4.5 minutes in the whole process, wherein the carbon content of the semi-steel is 3.63 percent, the temperature is 1425 ℃, the residual vanadium content is 0.062 percent, the carbon burning loss rate is 17.5 percent, and the vanadium oxidation rate is 79.6 percent.
Comparative example 2
0.10 percent of vanadium-containing molten iron silicon, 1300 ℃ of molten iron temperature and 140t of vanadium-containing molten iron are put into a 120-ton converter, and pure O is adopted2Blowing is carried out with an oxygen flow of 17600m3And h, controlling the unit consumption of a coolant to 26kg/t of vanadium-containing molten iron, blowing the molten iron for 5.5 minutes in the whole process, wherein the carbon content of the semi-steel is 3.54 percent, the temperature is 1405 ℃, the residual vanadium content is 0.035 percent, the carbon burnout rate is 16.8 percent, and the vanadium oxidation rate is 87.5 percent.
Comparative example 3
0.18 percent of vanadium-containing molten iron and silicon, the temperature of the molten iron is 1300 ℃, 142t of vanadium-containing molten iron is put into a 120 t converter, and pure O is adopted2Blowing is carried out with oxygen flow of 17700m3And h, controlling the unit consumption of a coolant to be 28kg/t of vanadium-containing molten iron, wherein the whole blowing time is 5.3 minutes, the carbon content of semi-steel is 3.57 percent, the temperature is 1396 ℃, the residual vanadium content is 0.038 percent, the carbon burning loss rate is 17.2 percent, and the vanadium oxidation rate is 88.6 percent.
Claims (8)
1. The method for extracting vanadium by the binary gas supply converter is characterized by comprising the following steps: determining air supply converting conditions according to the silicon content and the temperature of the vanadium-containing molten iron, and specifically comprising the following steps:
when the Si content of the vanadium-titanium molten iron is less than 0.15 wt% and the temperature is 1280-1300 ℃, blowing oxygen through an oxygen lance to blow gas for converting, and blowing O in the period of 60-120 s from the beginning of converting to the end of converting2(ii) a Blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 20-40%; the vanadium extraction coolant is added within 2min after the start of blowing;
when the Si content of the vanadium-titanium molten iron is more than or equal to 0.15 wt% and the temperature is 1280-1300 ℃, blowing oxygen through an oxygen lance to blow gas for converting, and blowing O in the period from the start of converting to 60-120 s after the start of converting2(ii) a Blowing O in the period from 60-120 s after the start of blowing to 60-120 s before the end of blowing2And N2Mixed gas of N2The consumption proportion is 10-30%; blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 20-40%; the vanadium extraction coolant is added within 2min after the start of blowing;
when the temperature of the vanadium-titanium molten iron is higher than 1300 ℃, blowing oxygen by an oxygen lance to blow gas for converting after the vanadium-containing molten iron enters the converter, and blowing O in the period of 60-120 s from the beginning of converting to the end of converting2And N2Mixed gas of N2The consumption proportion is 20-30%; blowing and spraying O within the time period from 60-120 s before the end of the blowing to the end of the blowing2And N2Mixed gas of N2The consumption proportion is 30-40%; the vanadium extraction coolant is added within 2min after the start of blowing.
2. The method for extracting vanadium by using the binary gas supply converter according to claim 1, characterized by comprising the following steps: when the Si content of the molten vanadium-titanium iron is less than 0.15 wt% and the temperature is 1280-1300 ℃, the oxygen flow is 16500-18500 m in the period of 60-120 s from the beginning of blowing to the end of blowing3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 4500-8500 m3/h。
3. The method for extracting vanadium by using the binary gas supply converter according to claim 1, characterized by comprising the following steps: when the Si content of the molten vanadium-titanium iron is more than or equal to 0.15 wt% and the temperature is 1280-1300 ℃, the oxygen flow is 16500-18500 m in the period from the beginning of blowing to 60-120 s after the beginning of blowing3H; the oxygen flow is 14000-15500 m in the period from 60-120 s after the start of converting to 60-120 s before the end of converting3The nitrogen flow is 1800-6500 m3H; 60-120 s before the end of convertingThe oxygen flow is 13200-14500 m within the time period of the blowing ending3The nitrogen flow is 4500-8500 m3/h。
4. The method for extracting vanadium by using the binary gas supply converter according to claim 1, characterized by comprising the following steps: when the temperature of the vanadium-titanium molten iron is higher than 1300 ℃, the oxygen flow is 13600-14500 m in the time period of 60-120 s from the beginning of blowing to the end of blowing3The nitrogen flow is 4500-7500 m3H; the oxygen flow is 13200-14500 m from 60-120 s before the blowing is finished to the blowing finishing time period3The nitrogen flow is 5500-9000 m3/h。
5. The method for extracting vanadium by using the binary gas supply converter according to claim 1, characterized by comprising the following steps: the charging amount of the vanadium-containing molten iron is 130-150 t.
6. The method for extracting vanadium by using the binary gas supply converter according to claim 1, characterized by comprising the following steps: the whole blowing time is 5.0 min-7.5 min.
7. The method for extracting vanadium by using the binary gas supply converter according to claim 1, characterized by comprising the following steps: the dosage of the vanadium extraction coolant is 25-40 kg/t vanadium-containing molten iron.
8. The method for extracting vanadium by using the binary gas supply converter according to any one of claims 1 to 7, characterized by comprising the following steps: the blowing end temperature is 1360-1410 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093569.XA CN109609719B (en) | 2019-01-30 | 2019-01-30 | Method for extracting vanadium by binary gas supply converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093569.XA CN109609719B (en) | 2019-01-30 | 2019-01-30 | Method for extracting vanadium by binary gas supply converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109609719A CN109609719A (en) | 2019-04-12 |
| CN109609719B true CN109609719B (en) | 2020-11-17 |
Family
ID=66021113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910093569.XA Active CN109609719B (en) | 2019-01-30 | 2019-01-30 | Method for extracting vanadium by binary gas supply converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109609719B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127613A (en) * | 2011-02-25 | 2011-07-20 | 河北钢铁股份有限公司承德分公司 | Method for extracting vanadium through composite blowing of converter |
| CN103525972A (en) * | 2013-10-23 | 2014-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Converter vanadium-extracting method of molten iron containing vanadium |
| CN106244763A (en) * | 2016-09-07 | 2016-12-21 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of vanadium-bearing hot metal is the method for Simultaneous Oxidation separation of phosphorus vanadium in converter |
| CN108179245A (en) * | 2018-01-29 | 2018-06-19 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of composite air supply vanadium extraction by converter blowing method |
-
2019
- 2019-01-30 CN CN201910093569.XA patent/CN109609719B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127613A (en) * | 2011-02-25 | 2011-07-20 | 河北钢铁股份有限公司承德分公司 | Method for extracting vanadium through composite blowing of converter |
| CN103525972A (en) * | 2013-10-23 | 2014-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Converter vanadium-extracting method of molten iron containing vanadium |
| CN106244763A (en) * | 2016-09-07 | 2016-12-21 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of vanadium-bearing hot metal is the method for Simultaneous Oxidation separation of phosphorus vanadium in converter |
| CN108179245A (en) * | 2018-01-29 | 2018-06-19 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of composite air supply vanadium extraction by converter blowing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109609719A (en) | 2019-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103525972B (en) | Converter vanadium-extracting method of molten iron containing vanadium | |
| CN102660658B (en) | Method for curing converter slag | |
| CN109234490A (en) | A kind of vanadium extraction-decarburization duplex converter high-efficiency long-life blowing method and system | |
| CN110205437B (en) | Method for reducing TFe content in semi-steel steelmaking converter final slag | |
| CN108330303A (en) | A kind of new method preparing middle and high vanadium iron | |
| CN108048618A (en) | A kind of converter CO2The method of vanadium extraction | |
| CN109182886B (en) | Method for reducing content of residual vanadium in ferrovanadium smelting furnace slag | |
| CN109628697B (en) | High-carbon dephosphorization method for smelting medium-high carbon steel grade in converter | |
| CN110195142A (en) | The method for improving vanadium extraction by converter blowing vanadium yield | |
| CN109609719B (en) | Method for extracting vanadium by binary gas supply converter | |
| CN100560740C (en) | A kind of CO that utilizes 2Gas reduces the method that fume from steel making produces | |
| CN110527786B (en) | Method for directly alloying and steelmaking by using manganese ore in converter | |
| CN107988456A (en) | A kind of converter steelmaking process | |
| CN109825665B (en) | Method for reducing carbon and oxygen deposit of molten steel at converter end point | |
| CN109338041B (en) | Method for applying limestone to LF refining instead of calcium carbide | |
| CN101440419B (en) | Control method for smelting high carbon low phosphorus steel by converter | |
| CN115261552A (en) | Method for extracting vanadium from high-temperature molten iron by converter | |
| CN110184406A (en) | A kind of method for making steel for improving steel scrap and ratio being added | |
| CN113699301B (en) | Converter smelting method for improving energy production by adopting high-flow oxygen | |
| CN109252011A (en) | A kind of vanadium-raising cooling agent and preparation method thereof and extraction vanadium method | |
| CN113088617B (en) | Converter steelmaking method | |
| CN105483315B (en) | The method of chrome ore DIRECT ALLOYING in semi-steel making Converter | |
| CN114622054A (en) | Method for improving converter end-point manganese ratio | |
| CN110527785B (en) | Direct alloying process of manganese ore in semi-steel less-slag smelting converter | |
| CN111961797A (en) | Method for increasing CO content in semisteel steelmaking converter gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |