CN102912071A - High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag - Google Patents
High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag Download PDFInfo
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- CN102912071A CN102912071A CN2012103476720A CN201210347672A CN102912071A CN 102912071 A CN102912071 A CN 102912071A CN 2012103476720 A CN2012103476720 A CN 2012103476720A CN 201210347672 A CN201210347672 A CN 201210347672A CN 102912071 A CN102912071 A CN 102912071A
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Abstract
The invention provides high-calcium vanadium slag for extracting vanadium by a calcium process and a method for producing the high-calcium vanadium slag. The method includes steps of (1), feeding molten iron containing the vanadium into a converter, and adding scale and lime into the converter; (2), blowing oxygen into the converter; (3), performing steel tapping after oxygen blowing is completed to obtain semi-steel for extracting the vanadium; and (4), directly discharging slag or retaining the slag and performing the steps (1), (2) and (3) repeatedly before slag discharge, and obtaining the high-calcium vanadium slag. The high-calcium vanadium slag produced by the method comprises, by weight, from 6% to 10% of CaO, lower than 0.1% of P and from 22% to 24% of iron, and a value of CaO/V2O5 ranges from 0.4 to 0.6. The high-calcium vanadium slag for extracting the vanadium by the calcium process is qualified, and the content of the phosphorus in the vanadium slag is lower than 0.1%. In addition, the metal iron loss ratio in a production process is reduced, and the production cost is obviously lowered. Besides, the produced semi-steel for extracting the vanadium is low in phosphorus content, and dephosphorization burden in a steelmaking process is reduced.
Description
Technical field
The present invention relates to the ferrous metallurgy field, more particularly, relate to a kind of high calcium vanadium slag and production method thereof for the vanadium extraction of calcium method.
Background technology
In recent years, China's beginning is advocated energetically and is developed clearer production technology, and environment protection has been listed the emphasis of the medium-term and long-term development in science and technology outline of China in and supported the field, and the law enforcement for environmental protection dynamics is being greatly enhanced in recent years.
At present from vanadium slag the most normal employing of vanadium extraction be sodium vanadium extraction (vanadium extraction of sodium method) technique, extract in the production process of barium oxide product (hereinafter claiming the vanadium extraction of sodium method) in the sodium method, pollute and mainly to concentrate on from the vanadium slag to the vanadium oxide in this hydrometallurgy process, pollutent mainly is vanadium extracting waste water and the vanadium-extracted residues that contains a large amount of ammonia nitrogens and sodium salt.In addition, in traditional sodium process for extracting vanadium, calcium is to be considered to a kind of harmful element, and the existence of calcium is very big on the roasting conversion rate impact, because CaO is easy to V in the vanadium slag
2O
5Produce the vanadium bronze of water-fast vanadic acid calcium or calcic, in periodical literature " calcium is on the impact of Leaching of Vanadium from Vanadium slag ", the superfine people of Wang Jin points out that the quality of CaO disperses every increase by 1% will bring 4.7%～9.0% V
2O
5Loss, and V
2O
5/ CaO ratio is higher, and influence degree is less, works as V
2O
5/ CaO ratio was less than 9 o'clock, and influence degree is obvious, therefore, the vanadium slag of producing at present mainly be CaO below 3.0%, CaO/V
2O
5Than the low calcium vanadium slag below 0.15, and in the situ production process of low calcium vanadium slag, nearly all steel mill does not all add calcium oxide (CaO), and in addition, in the production of low calcium vanadium slag, the iron-holder of vanadium slag is high, so the metallic iron rate of loss is high.
For sodium method vanadium extraction defective, now developed the process for cleanly preparing technology of vanadium slag calcium method vanadium extraction, namely adopt the technique of calcification baking-acidleach to carry out vanadium extraction.This technique has solved the pollution problem of sodium vanadium extracting process, and needs high calcium vanadium slag to make raw material, but the composition of high calcium vanadium slag is had strict requirement.Because the phosphorus in the high calcium vanadium slag is detrimental impurity, can greatly reduce the vanadium recovery of calcium method process for extracting vanadium, in addition CaO content, and CaO/V
2O
5Weight ratio also influential to V leaching rate, therefore to the phosphorus content in the high calcium vanadium slag of calcium method roasting, CaO content and CaO/V
2O
5Mass ratio strict requirement is arranged.
Summary of the invention
The object of the present invention is to provide a kind of high calcium vanadium slag and production method thereof that is applicable to calcium method process for extracting vanadium, to reduce the iron level in the vanadium slag, reduce the phosphorus content in the vanadium slag.
To achieve these goals, the invention provides the production method that high calcium vanadium slag is used in a kind of calcium method vanadium extraction, said method comprising the steps of: (1) is blended into vanadium-bearing hot metal in the converter, to wherein adding iron scale and lime; (2) then carry out oxygen blast; (3) oxygen blast is tapped after finishing, and obtains the vanadium extraction half steel; (4) directly slag tap or keep slag and proceed repeatedly to slag tap again after the step of aforementioned (1)～(3), obtain high calcium vanadium slag.
According to an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, the weight percent of CaO is 85%～95% in the described lime.
According to an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, described iron scale add-on is 15～30kg/t
Iron, described lime adding amount is 8～15kg/t
Iron
An embodiment according to the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, the temperature of described vanadium-bearing hot metal is 1200～1450 ℃, by weight percentage, described vanadium-bearing hot metal comprises 3.9%～4.5% C, 0.2%～0.5% V, 0.02%～0.10% S and 0.06%～0.20% P.
According to an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, in described oxygen blown step, oxygen supply pressure is 0.4～0.8MPa, and oxygen flow is 4000～40000Nm
3/ h, oxygen supply time are 4～8min.
An embodiment according to the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, the temperature of described vanadium extraction half steel is 1340～1400 ℃, by weight percentage, described vanadium extraction half steel comprises 3.4%～4.0% C, 0.02%～0.04% V, 0.02%～0.10% S, 0.054%～0.18% P.
According to an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, described method also comprises carries out the step that fragmentation, magnetic separation are processed to described high calcium vanadium slag, and the qualified high calcium vanadium slag of gained is the high calcium vanadium slag finished product afterwards.
According to an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, high ferro part high calcium vanadium slag that described method also comprises will described fragmentation, obtain after the magnetic separation step is back to the step of making vanadium-raising cooling agent in the converter.The present invention further provides a kind of calcium method vanadium extraction high calcium vanadium slag, described high calcium vanadium slag adopts above-mentioned calcium method vanadium extraction to prepare with the production method of high calcium vanadium slag.Wherein, by weight percentage, the content of CaO is 6%～10% in the described high calcium vanadium slag, the content of P is below 0.1%, and iron level is 22%～24%, CaO/V
2O
5Value be 0.4～0.6.
Adopt calcium method vanadium extraction provided by the invention with the production method of high calcium vanadium slag, can produce the qualified high calcium vanadium slag that is applicable to calcium method process for extracting vanadium, by weight, CaO content is 6%～10% in the gained high calcium vanadium slag, and iron level is 22%～24%, CaO/V
2O
5Than being 0.4～0.6, phosphorus content is below 0.1%; Compare with low calcium vanadium slag (containing CaO≤3%) with the sodium vanadium extraction, the iron-holder in this high calcium vanadium slag is low by 2%～8%, has reduced the metallic iron rate of loss, namely improves the rate of recovery of metallic iron in the vanadium slag.
Calcium method vanadium extraction of the present invention is up-to-standard with high calcium vanadium slag, has reduced the phosphorus content in the vanadium slag, and has reduced in process of production the metallic iron rate of loss, has significantly reduced production cost.
Description of drawings
Fig. 1 is the calcium method vanadium extraction of exemplary embodiment of the present high calcium vanadium slag production technique synoptic diagram.
Embodiment
Below, describe embodiments of the invention in detail with reference to figure.
Need to prove that the half steel of vanadium extraction described in the present invention refers to the molten iron after the vanadium extraction, described lime claims again unslaked lime, and main component is calcium oxide (CaO).
The invention provides a kind of calcium method vanadium extraction production method of high calcium vanadium slag, said method comprising the steps of:
At first vanadium-bearing hot metal is blended in the converter, to wherein adding iron scale and lime.Because high calcium vanadium slag of the present invention is used for the vanadium extraction of calcium method, so can add lime in molten iron, the adding of iron scale and lime is to make vanadium-raising cooling agent on the one hand, can remove on the other hand the phosphorus in the part half steel.When dephosphorization under oxidizing atmosphereLin Fenpeibi, the CaO agent that only fixes itself, fusing point is higher, needs to be used with oxygenant and promotor in dephosphorizing process.CaO type dephosphorizing agent obtains broad research and use, common CaO type dephosphorizing agent such as CaO-P
2O
5-CaF
2-Fe
xO is dephosphorizing agent, CaO-CaF
2-Fe
2O
3Be dephosphorizing agent, CaO-Fe
2O
3-CaF
2-BaO is dephosphorizing agent, and CaO and FeO are that FeO has promoter action to dephosphorization for the basal component of the lime slag system of dephosphorization under oxidizing atmosphereLin Fenpeibi; In addition, the present invention adds the effect that lime also plays residue adjustment, the iron that is conducive in the vanadium slag enters in the vanadium extraction half steel, iron level in the vanadium slag reduces thus, and the iron level in the vanadium extraction half steel increases, reduce vanadium extraction by converter blowing process metallic iron rate of loss, improved the rate of recovery of vanadium extraction by converter blowing process metallic iron, obtained extraordinary metallurgical effect.
Preferably, the weight percent of CaO is 85%～95% in the described lime; If CaO content is lower than 85% in the lime, then reach the amount of lime that above-mentioned blowing effect need to increase adding, can cause vanadium slag V
2O
5Content is low, high calcium vanadium slag CaO/V
2O
5Than exceeding claimed range, if be higher than 95%, then lime consumption reduces, vanadium slag V
2O
5Content improves, high calcium vanadium slag CaO/V
2O
5Than being lower than claimed range, thereby in rear step calcium method vanadium extracting process, need to replenish part lime, can increase the vanadium extraction production cost thus.
At an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, the add-on of described iron scale is 15～30kg/t
Iron, the add-on of described lime is 8～15kg/t
IronIron scale and lime adding amount are selected in the described scope, mainly be to guarantee that vanadium extracting process does not produce peroxidation, thereby make half steel carbon content after the vanadium extraction in higher level, guarantee that lower step semi-steel making process heat is sufficient, semi-steel making is smooth, simultaneously, by the control of iron scale and lime adding amount, can guarantee the CaO/V of high calcium vanadium slag
2O
5Than the production requirement of satisfying the vanadium extraction of calcium method.
An embodiment in the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, the temperature of described vanadium-bearing hot metal is 1200～1450 ℃, by weight percentage, described vanadium-bearing hot metal comprises 3.9%～4.5% C, 0.2%～0.5% V, 0.02%～0.10% S and 0.06%～0.20% P.Wherein, it is abundant in order to ensure the vanadium extraction from hot metal dynamic conditions that the temperature of vanadium-bearing hot metal is controlled at 1200～1450 ℃, is conducive to vanadium in the molten iron is extracted.
Then carry out oxygen blast; Wherein, oxygen supply pressure is 0.4～0.8MPa, and oxygen flow is 4000～40000Nm
3/ h, oxygen supply time are 4～8min.Wherein, oxygen supply pressure and oxygen flow are according to choosing that the BOF nominal capacity size is come.The vanadium extraction by converter blowing that nominal capacity is little adopts lower limit of operation, otherwise, operate with the upper limit; And oxygen supply time is in this scope, can guarantee higher vanadium oxidation ratio, thereby vanadium in the molten iron is proposed to enter the slag phase, can guarantee that again the loss of half steel oxidation of coal is little, and the carbon content of half steel is high, thereby provides adequate heat for semi-steel making.
Tap after oxygen blast finishes, obtain the vanadium extraction half steel after, can send converter steelmaking with the vanadium extraction half steel of gained.
An embodiment in the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, in the described tapping step, thermometric before tapping, then half steel is poured out from tap hole, the temperature that sampling analysis obtains described vanadium extraction half steel is 1340～1400 ℃, by weight percentage, described vanadium extraction half steel comprises 3.4%～4.0% C, 0.02%～0.04% V, 0.02%～0.10% S, 0.054%～0.18% P.
After the tapping, directly slag tap or keep slag and proceed to slag tap again after the step of repeatedly aforementioned vanadium extraction, obtain high calcium vanadium slag.Wherein, adopt many stoves to slag tap and can reduce the loss of vanadium slag, improve the rate of recovery of vanadium slag, preferred, adopt 2～3 stoves to go out high calcium vanadium slag one time; If slag just reaches certain weight behind 1 stove, also can directly slag tap.Preferably, before going out high calcium vanadium slag, first the vanadium extraction half steel is gone out to the greatest extent, high calcium vanadium slag is poured into the dress vanadium slag container from fire door cooled off again.
An embodiment in the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, described method also comprises the step of described high calcium vanadium slag being carried out fragmentation, magnetic separation processing, the qualified high calcium vanadium slag of gained is the high calcium vanadium slag finished product afterwards, the high calcium vanadium slag finished product of gained can be sent calcium method vanadium extraction production line, as its vanadium extraction raw material.Preferably, described high calcium vanadium slag is cooled to carries out again fragmentation, magnetic separation below 200 ℃ and process.
At an embodiment of the production method of the high calcium vanadium slag for calcium method process for extracting vanadium of the present invention, high ferro part high calcium vanadium slag that described method also comprises will described fragmentation, obtain after the magnetic separation step is back to the step in the converter.Wherein, high ferro part high calcium vanadium slag returns to makes vanadium-raising cooling agent in the converter, resource is recycled.
The present invention further provides a kind of calcium method vanadium extraction high calcium vanadium slag, described high calcium vanadium slag adopts above-mentioned calcium method vanadium extraction to prepare with the production method of high calcium vanadium slag.Wherein, by weight percentage, the content of CaO is 6%～10% in the described high calcium vanadium slag, the content of P is below 0.1%, and iron level is 22%～24%, CaO/V
2O
5Value be 0.4～0.6.
The present invention is the special technology that will invent with high calcium vanadium slag for the vanadium extraction of calcium method, and wherein, CaO content is 6%～10% in the high calcium vanadium slag, with CaO content be controlled at this scope be because the molten iron content of vanadium generally below 0.5%, like this, in order to control CaO/V
2O
5Than being 0.4～0.6, and for the P content in the high calcium vanadium slag is controlled at below 0.1%, then need CaO content in the high calcium vanadium slag is controlled in 6%～10% the scope, if CaO content greater than 10%, then the P content in the vanadium slag exceeds 0.1%, and CaO/V
2O
5Than greater than 0.6, then during the vanadium extraction of calcium method, the vanadium yield will reduce greatly, and production cost improves, decline in benefits; CaO/V
2O
5Than being 0.4～0.6th, the processing parameter of the vanadium yield optimum of determining in the calcium method vanadium extracting process.It is because phosphorus is detrimental impurity that phosphorus content is controlled at below 0.1%, can greatly reduce the vanadium recovery of calcium method process for extracting vanadium, so what phosphorus content fell is more low better.If phosphorus content is controlled at more than 0.1%, because of present calcium method vanadium extraction technology also in further optimizing, wherein, except the P technology does not also reach optimum, thereby existing calcium method process for extracting vanadium needs high calcium vanadium slag to realize phosphorus content control.
Particularly, exemplary embodiment of the present invention can may further comprise the steps:
Be that 1200～1450 ℃ vanadium-bearing hot metal is blended in the converter with temperature, then to wherein adding 15～30kg/t
IronIron scale and 8～15kg/t
IronLime; After adding, beginning oxygen blast vanadium extraction, wherein, oxygen supply pressure is 0.4～0.8MPa, oxygen flow is 4000～40000Nm
3/ h, oxygen supply time are 4～8min; After oxygen blast finished, thermometric was also poured out the vanadium extraction half steel from tap hole, and the vanadium extraction half steel that obtains send converter steelmaking; Directly slag tap or keep slag and proceed repeatedly to slag tap again after the abovementioned steps, wherein, before going out high calcium vanadium slag, first the vanadium extraction half steel is gone out to the greatest extent, again high calcium vanadium slag is poured into the dress vanadium slag container from fire door and cooled off, it is poured out then broken and magnetic separation after being cooled to below 200 ℃ from dress vanadium slag container, the high ferro part high calcium vanadium slag that obtains returns to the vanadium extraction by converter blowing operation, adds in the stove to make refrigerant; The composition of the qualified high calcium vanadium slag that obtains is by weight percentage: the content of CaO is 6%～10%, the content of P is below 0.1%, and iron level is 22%～24%, CaO/V
2O
5Value be 0.4～0.6, the qualified high calcium vanadium slag that obtains send calcium method vanadium extraction production line to make the vanadium extraction raw material.
The invention will be further elaborated below in conjunction with embodiment.Embodiment only is used for explanation the present invention, rather than limits by any way the present invention.
Embodiment 1
Be that 1200 ℃ vanadium-bearing hot metal (containing the S of V, 0.02wt% of C, 0.2wt% of 4.5wt% and the P of 0.12wt%) is blended in the converter that nominal capacity is 30t with the 30t temperature, then to wherein adding 24kg/t
IronIron scale and 8kg/t
IronLime (containing CaO 85%); After adding, beginning oxygen blast vanadium extraction, wherein, oxygen supply pressure is 0.4MPa, oxygen flow is 4000Nm
3/ h, oxygen supply time are 8min; After oxygen blast finished, thermometric was also poured out the vanadium extraction half steel from tap hole, and its composition is: [C] 3.4wt%, and [V] 0.02wt%, [S] 0.02wt%, [P] 0.11wt%, temperature is 1340 ℃, send converter steelmaking with this vanadium extraction half steel, wherein, vanadium extracting process dephosphorization rate 10%; High calcium vanadium slag is stayed in the stove and is carried out the 2nd stove vanadium extraction operation, after vanadium extraction is finished, the vanadium extraction half steel is gone out to the greatest extent first, high calcium vanadium slag is poured into the dress vanadium slag container from fire door cooled off again, it is poured out from dress vanadium slag container after being cooled to 200 ℃, then broken and magnetic separation, the high ferro part high calcium vanadium slag that obtains returns to the vanadium extraction by converter blowing operation, adds in the stove to make refrigerant, and the composition of the qualified high calcium vanadium slag that obtains is by weight percentage: 10%CaO, 0.04% phosphorus, and CaO/V
2O
5Value be 0.4, iron level 22%, the qualified high calcium vanadium slag that obtains send calcium method vanadium extraction production line to make the vanadium extraction raw material.
Embodiment 2
Be that 1280 ℃ vanadium-bearing hot metal (containing the S of V, 0.05wt% of C, 0.35wt% of 3.90wt% and the P of 0.06wt%) is blended in the converter that nominal capacity is 120t with the 120t temperature, then to wherein adding 15kg/t
IronIron scale and 12kg/t
IronLime (containing CaO 85%); After adding, beginning oxygen blast vanadium extraction, wherein, oxygen supply pressure is 0.7MPa, oxygen flow is 15000Nm
3/ h, oxygen supply time are 4min; After oxygen blast finished, thermometric was also poured out the vanadium extraction half steel from tap hole, and its composition is: [C] 3.7wt%, and [V] 0.04wt%, [S] 0.05wt%, [P] 0.05wt%, temperature is 1380 ℃, send converter steelmaking wherein this vanadium extraction half steel, vanadium extracting process dephosphorization rate 20%; High calcium vanadium slag is stayed in the stove and is carried out the 2nd stove, the 3rd stove vanadium extraction operation, after vanadium extraction is finished, the vanadium extraction half steel is gone out to the greatest extent first, high calcium vanadium slag is poured into the dress vanadium slag container from fire door cooled off again, it is poured out from dress vanadium slag container after being cooled to 150 ℃, then broken and magnetic separation, the high ferro part high calcium vanadium slag that obtains returns to the vanadium extraction by converter blowing operation, adds in the stove to make refrigerant, and the composition of the qualified high calcium vanadium slag that obtains is by weight percentage: 8%CaO, 0.06% phosphorus, and CaO/V
2O
5Value be 0.5, iron level 24%, the qualified high calcium vanadium slag that obtains send calcium method vanadium extraction production line to make the vanadium extraction raw material.
Embodiment 3
Be that 1450 ℃ vanadium-bearing hot metal (containing the S of V, 0.10wt% of C, 0.5wt% of 4.50wt% and the P of 0.20wt%) is blended in the converter that nominal capacity is 200t with the 200t temperature, then to wherein adding 30kg/t
IronIron scale and 15kg/t
IronLime (containing CaO 85%); After adding, beginning oxygen blast vanadium extraction, wherein, oxygen supply pressure is 0.8MPa, oxygen flow is 40000Nm
3/ h, oxygen supply time are 6min; After oxygen blast finished, thermometric was also poured out the vanadium extraction half steel from tap hole, and its composition is: [C] 4.0wt%, and [V] 0.04wt%, [S] 0.10wt%, [P] 0.17wt%, temperature is 1400 ℃, send converter steelmaking wherein this vanadium extraction half steel, vanadium extracting process dephosphorization rate 15%; High calcium vanadium slag is stayed in the stove and is carried out the 2nd stove, the 3rd stove vanadium extraction operation, after vanadium extraction is finished, the vanadium extraction half steel is gone out to the greatest extent first, high calcium vanadium slag is poured into the dress vanadium slag container from fire door cooled off again, it is poured out from dress vanadium slag container after being cooled to 100 ℃, then broken and magnetic separation, the high ferro part high calcium vanadium slag that obtains returns to the vanadium extraction by converter blowing operation, adds in the stove to make refrigerant, and the composition of the qualified high calcium vanadium slag that obtains is by weight percentage: 6%CaO, 0.10% phosphorus, and CaO/V
2O
5Value be 0.6, iron level 24%, the qualified high calcium vanadium slag that obtains send calcium method vanadium extraction production line to make the vanadium extraction raw material.
Adopt the calcium method vanadium extraction provided by the invention production method of high calcium vanadium slag, can produce the qualified high calcium vanadium slag that is applicable to calcium method process for extracting vanadium, by weight percentage, the content of CaO is 6%～10% in the gained high calcium vanadium slag, iron level is 22%～24%, the content of P is below 0.1%, CaO/V
2O
5Value be 0.4～0.6; Iron level 26%～30% in the low calcium vanadium slag (containing CaO≤3%) is compared with it, and the iron-holder in the high calcium vanadium slag of the present invention is low by 2%～8%, has reduced the metallic iron rate of loss, namely improves the rate of recovery of metallic iron in the vanadium slag.
In sum, calcium method vanadium extraction of the present invention is up-to-standard with high calcium vanadium slag, and the phosphorus content in the vanadium slag is below 0.1%; And reduced in process of production the metallic iron rate of loss, significantly reduced production cost; Simultaneously, in the half steel of gained of the present invention, phosphorus content is few, has reduced the dephosphorization burden of steelmaking process.
Claims (10)
1. a calcium method vanadium extraction said method comprising the steps of with the production method of high calcium vanadium slag:
(1) vanadium-bearing hot metal is blended in the converter, to wherein adding iron scale and lime;
(2) then carry out oxygen blast;
(3) oxygen blast is tapped after finishing, and obtains the vanadium extraction half steel;
(4) directly slag tap or keep slag and proceed repeatedly to slag tap again after the step of aforementioned (1)～(3), obtain high calcium vanadium slag.
2. calcium method vanadium extraction according to claim 1 is characterized in that with the production method of high calcium vanadium slag the weight percent of CaO is 85%～95% in the described lime.
3. calcium method vanadium extraction according to claim 1 is characterized in that with the production method of high calcium vanadium slag the add-on of described iron scale is 15～30kg/t
Iron, the add-on of described lime is 8～15kg/t
Iron
4. calcium method vanadium extraction according to claim 1 is with the production method of high calcium vanadium slag, it is characterized in that, the temperature of described vanadium-bearing hot metal is 1200～1450 ℃, by weight percentage, described vanadium-bearing hot metal comprises 3.9%～4.5% C, 0.2%～0.5% V, 0.02%～0.10% S and 0.06%～0.20% P.
5. calcium method vanadium extraction according to claim 1 is characterized in that with the production method of high calcium vanadium slag in described oxygen blown step, oxygen supply pressure is 0.4～0.8MPa, and oxygen flow is 4000～40000Nm
3/ h, oxygen supply time are 4～8min.
6. calcium method vanadium extraction according to claim 1 is with the production method of high calcium vanadium slag, it is characterized in that, the temperature of described vanadium extraction half steel is 1340～1400 ℃, by weight percentage, described vanadium extraction half steel comprises 3.4%～4.0% C, 0.02%～0.04% V, 0.02%～0.10% S, 0.054%～0.18% P.
7. calcium method vanadium extraction according to claim 1 is characterized in that with the production method of high calcium vanadium slag, and described method also comprises the step of described high calcium vanadium slag being carried out fragmentation, magnetic separation processing, and the qualified high calcium vanadium slag of gained is the high calcium vanadium slag finished product afterwards.
8. calcium method vanadium extraction according to claim 7 is characterized in that with the production method of high calcium vanadium slag, and described method comprises that also the high ferro part high calcium vanadium slag that will obtain after described fragmentation, the magnetic separation step is back to the step of making vanadium-raising cooling agent in the converter.
9. a calcium method vanadium extraction high calcium vanadium slag is characterized in that, each described calcium method vanadium extraction prepares with the production method of high calcium vanadium slag in the described high calcium vanadium slag employing claim 1 to 8.
10. calcium method vanadium extraction high calcium vanadium slag according to claim 9 is characterized in that, by weight percentage, the content of CaO is 6%～10% in the described high calcium vanadium slag, the content of P is below 0.1%, and iron level is 22%～24%, CaO/V
2O
5Value be 0.4～0.6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347672.0A CN102912071B (en) | 2012-09-19 | 2012-09-19 | High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag |
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|---|---|---|---|
| CN201210347672.0A CN102912071B (en) | 2012-09-19 | 2012-09-19 | High-calcium vanadium slag for extracting vanadium by calcium process and method for producing high-calcium vanadium slag |
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| Publication Number | Publication Date |
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| CN109971912A (en) * | 2019-05-16 | 2019-07-05 | 成都先进金属材料产业技术研究院有限公司 | Converter molten iron adds the method for lime production calcic vanadium slag and its leaching |
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| CN109252011A (en) * | 2018-11-26 | 2019-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of vanadium-raising cooling agent and preparation method thereof and extraction vanadium method |
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| CN101215619A (en) * | 2008-01-03 | 2008-07-09 | 攀钢集团攀枝花钢铁研究院 | Method for extracting vanadium and removing phosphorus from vanadium-containing molten iron and steel-smelting technique using the same method |
| CN101280351A (en) * | 2008-05-22 | 2008-10-08 | 王荣春 | Production method of vanadium slag |
| CN101412539A (en) * | 2008-11-18 | 2009-04-22 | 攀钢集团研究院有限公司 | Clean production process for vanadium oxide |
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| CN101215619A (en) * | 2008-01-03 | 2008-07-09 | 攀钢集团攀枝花钢铁研究院 | Method for extracting vanadium and removing phosphorus from vanadium-containing molten iron and steel-smelting technique using the same method |
| CN101280351A (en) * | 2008-05-22 | 2008-10-08 | 王荣春 | Production method of vanadium slag |
| CN101412539A (en) * | 2008-11-18 | 2009-04-22 | 攀钢集团研究院有限公司 | Clean production process for vanadium oxide |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109971912A (en) * | 2019-05-16 | 2019-07-05 | 成都先进金属材料产业技术研究院有限公司 | Converter molten iron adds the method for lime production calcic vanadium slag and its leaching |
| WO2020228750A1 (en) * | 2019-05-16 | 2020-11-19 | 成都先进金属材料产业技术研究院有限公司 | Method for producing calcium-containing vanadium slag by adding lime to converter molten iron and leaching method therefor |
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