CN103436690A - Method for leaching high-iron vanadium-containing calcified clinker, as well as method for producing vanadium oxide - Google Patents
Method for leaching high-iron vanadium-containing calcified clinker, as well as method for producing vanadium oxide Download PDFInfo
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- CN103436690A CN103436690A CN2013103734695A CN201310373469A CN103436690A CN 103436690 A CN103436690 A CN 103436690A CN 2013103734695 A CN2013103734695 A CN 2013103734695A CN 201310373469 A CN201310373469 A CN 201310373469A CN 103436690 A CN103436690 A CN 103436690A
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Abstract
The invention provides a method for leaching high-iron vanadium containing calcified clinker and a method for producing vanadium oxide. The leaching method comprises the following steps: adding high-iron vanadium-containing calcified clinker into water and stirring to obtain slurry, wherein the high-iron vanadium-containing calcified clinker contains not lower than 2 percent of iron by weight; controlling the pH of the slurry to be 3-4 by using sulfuric acid, and adding ammonium persulfate, wherein the adding amount of the ammonium persulfate can be used for oxidizing the iron element in the high-iron vanadium-containing calcified clinker into ferric iron; further controlling the pH of the slurry to be 2.6-3.2 by sulfuric acid, leaching under a stirring condition, and filtering to obtain a leaching liquid. The method has the advantage of well solving the problem that the vanadium leaching rate is reduced due to the influence of iron, and the problem that low-concentration black leaching liquid cannot be recycled as a leaching agent. The method is advantageous to stable operation of a vanadium oxide production process.
Description
Technical field
The present invention relates to vanadium slag calcification baking acidleach to prepare the technical field of barium oxide, specifically, relate to and a kind ofly leach the method for high swage containing v element in vanadium calcification grog, and a kind ofly with this, leach the method that high swage is produced barium oxide containing the method for v element in vanadium calcification grog.
Background technology
Usually, for fear of the problem that adopts vanadium slag sodium roasting-three wastes difficult treatment that water logging vanadium extraction explained hereafter vanadium oxide brings, to realize effective clean utilization of vanadium resource in vanadium titano-magnetite, developed the vanadium oxide production technique of From Converter Vanadium-bearing Slag calcification baking-sulfuric acid leaching.The vanadium oxide production technique of From Converter Vanadium-bearing Slag calcification baking-sulfuric acid leaching is high because having quality product, and waste water, waste residue can be realized the advantages such as low-cost recycle, and become the new direction of producing vanadium oxide technique.
Yet, in the vanadium oxide production technique that adopts From Converter Vanadium-bearing Slag calcification baking-sulfuric acid leaching is carried out the process of actual production, usually there will be the leach liquor color to become black and vanadium turns the situation that the rate of soaking reduces, even affect the stable smooth operation of technique when serious.
Summary of the invention
The object of the invention is to solve at least one in above-mentioned prior art deficiency.
For example, one of purpose of the present invention is to provide a kind of and solves the blackening of high swage clinker leaching liquor, vanadium turns the method that the rate of soaking is not high.The method, under the production abnormal conditions such as new vanadium factory's production initial stage, can effectively improve the vanadium yield that leaches operation, contribute to leach the operation of operation economic stability, is conducive to reduce costs, and increases the output value.
An aspect of of the present present invention provides the leaching method of a kind of high swage containing vanadium calcification grog.Described leaching method comprises the following steps of carrying out successively: high swage is added to the water containing vanadium calcification grog, stirs and form slurry, wherein, high swage contains containing in vanadium calcification grog the iron that is not less than by weight 2%; With sulfuric acid, the pH of slurry being controlled is 3～4, then adds ammonium persulphate, and wherein, the add-on of ammonium persulphate can be oxidized to ferric iron containing the ferro element in vanadium calcification grog by high swage; With sulfuric acid, further the pH of slurry being controlled is 2.6～3.2, under agitation condition, leaches, and then filters, and obtains leach liquor.
Another aspect of the present invention provides the leaching method of a kind of high swage containing vanadium calcification grog.Described leaching method comprises the following steps of carrying out successively: add ammonium persulphate in leaching agent, wherein, the composition of leaching agent contains the V of 3～10g/L by weight
5+, 0.05～2.0g/L V
4+, the TFe of 0.015～0.3g/L, the pH of leaching agent is 3～4, the add-on of ammonium persulphate can be by the V in leaching agent
4+be oxidized to V with TFe
5+and ferric iron; High swage is added in leaching agent containing vanadium calcification grog, stir and form slurry, wherein, high swage contains containing in vanadium calcification grog the iron that is not less than by weight 2%; With sulfuric acid, the pH of slurry being controlled is 3～4, then adds ammonium persulphate, and wherein, the add-on of ammonium persulphate can be oxidized to ferric iron containing the ferro element in vanadium calcification grog by high swage; With sulfuric acid, further the pH of slurry being controlled is 2.6～3.2, under agitation condition, leaches, and then filters, and obtains leach liquor.
Another aspect of the present invention provides a kind of method of producing barium oxide.Described method comprises From Converter Vanadium-bearing Slag calcification baking, sulfuric acid leaching, precipitation and calcining, and wherein, described sulfuric acid leaching adopts leaching method as above to realize.
Compared with prior art, beneficial effect of the present invention comprises: can significantly alleviate that impact because of the iron rate of soaking that causes vanadium to turn reduces and lower concentration black leach liquor should not, as problems such as leaching agent recycle, be conducive to the steady running of vanadium oxide production technique.
Embodiment
Hereinafter, describe the method for high swage of the present invention containing vanadium calcification grog leaching method and production barium oxide in detail in connection with exemplary embodiment.
Analysis through the vanadium oxide production technique to existing From Converter Vanadium-bearing Slag calcification baking-sulfuric acid leaching; the contriver finds in actual production process; usually can because of control improper cause after the From Converter Vanadium-bearing Slag calcification baking obtaining have the not oxidized Magnetic Materials of part (being mainly metallic iron) containing in vanadium calcification grog, this is to cause the leach liquor of sulfuric acid leaching gained to become black and reduce the major cause that vanadium turns the rate of soaking.And, when the leach liquor of black or the wash water that cleaned the residue that filtration obtains from the black leach liquor return when leaching operation and recycling, can cause vanadium to turn and soak the rate decrease, and dark solution can produce long impact to this vanadium oxide production technique, even affect the stable smooth operation of technique when serious.
High swage according to an aspect of the present invention comprises the following steps of carrying out successively containing the leaching method of vanadium calcification grog: high swage is added to the water containing vanadium calcification grog, stir and form slurry, wherein, high swage contains containing in vanadium calcification grog the iron that is not less than by weight 2%; With sulfuric acid, the pH of slurry being controlled is 3～4, then add ammonium persulphate, for example, the add-on of ammonium persulphate is 0.45～0.55 times of metallic iron molar weight in leaching agent, wherein, the add-on of ammonium persulphate can be oxidized to ferric iron containing the ferro element in vanadium calcification grog by high swage; With sulfuric acid, further the pH of slurry being controlled is 2.6～3.2, under agitation condition, leaches, and then filters, and obtains leach liquor.Preferably, in the step that adds ammonium persulphate and the step that leaches under agitation condition, it is 30～60 ℃ that the temperature of slurry is controlled.In addition, in the step leached under agitation condition, extraction time is preferably 45min～75min.
High swage according to a further aspect of the invention comprises the following steps of carrying out successively containing the leaching method of vanadium calcification grog: add ammonium persulphate in leaching agent, wherein, the composition of leaching agent contains the V of 3～10g/L by weight
5+, 0.05～2.0g/L V
4+, the TFe of 0.015～0.3g/L, the pH of leaching agent is 3～4, the add-on of ammonium persulphate can be by the V in leaching agent
4+be oxidized to V with TFe
5+and ferric iron, for example, the add-on of ammonium persulphate is V in leaching agent
4+, 0.45～0.55 times of TFe molar weight sum; High swage is added in leaching agent containing vanadium calcification grog, stir and form slurry, wherein, high swage contains containing in vanadium calcification grog the iron that is not less than by weight 2%; With sulfuric acid, the pH of slurry being controlled is 3～4, here, preferably, the liquid-solid ratio of slurry can be controlled is 1.8～2.3:1, then add ammonium persulphate, for example, the add-on of ammonium persulphate is 0.45～0.55 times of metallic iron molar weight in leaching agent, wherein, the add-on of ammonium persulphate can be oxidized to ferric iron containing the ferro element in vanadium calcification grog by high swage; With sulfuric acid, further the pH of slurry being controlled is 2.6～3.2, under agitation condition, leaches, and then filters, and obtains leach liquor.Preferably, in the step that adds ammonium persulphate in leaching agent, with sulfuric acid, the pH of slurry being controlled is that in 3～4 step and the step that leaches under agitation condition, the temperature of slurry can be controlled be 30～60 ℃.Preferably, in the step that adds ammonium persulphate in leaching agent, also can be stirred, and can be 1～10min by the control of the reaction times of this step.In addition, in the step leached under agitation condition, extraction time is preferably 45min～75min.
In the method for the invention, high swage contains 2%～6% iron by weight containing in vanadium calcification grog, for example, also can contain 3%～5% iron by weight.
In vanadium oxides producing process because of the each side reasons such as equipment, operation cause the vanadium slag metallic iron control stable not cause part at a low price iron be present in the calcification grog, when leaching these at a low price iron can be by sulfuric acid dissolution in solution and reduce the pentavalent vanadium.Therefore, while having metallic iron or ferrous iron to exist in grog, in infusion solution, will have tetravalence vanadium, pentavalent vanadium and iron ion to exist, the mixing of various ion colors makes solution colour be black simultaneously.Because V
5+the pH=1.5 of hydrolysis～2.5, and V
4+the pH=4.5 of hydrolysis～5.0.Thus, when high swage leaches containing vanadium calcification grog, in Leaching Systems, due to factors such as stirrings, there is the segregation of subregion acidity, make part tetravalence vanadium be hydrolyzed in advance, cause the loss of vanadium.And, add ammonium persulphate in solution after, iron is oxidized to rapidly high price and is formed Fe (OH) at a low price
3precipitation, the Low Valent Vanadium that part is reduced also is oxidized to rapidly high price, has avoided hydrolysis in advance.Therefore, in solution, add ammonium persulphate, can not only improve the leach liquor color, also can further improve the vanadium yield that leaches operation simultaneously, reduced unnecessary vanadium loss.Owing to being the operation that makes the operation economical and efficient in industrial production, concentration leach liquor lower, that be unsuitable for precipitation will be used as the leaching agent leached next time.And when black containing the vanadium thin liquid while being used as leaching agent, along with mixing of grog and leaching agent, the pH of Leaching Systems constantly rises, the V existed in leaching agent during the arrival certain limit
4+a large amount of precipitation losses, simultaneously, the part existed in leaching agent iron at a low price also can be reduced in grog the V leached
5+for V
4+, part V
4+hydrolysis forms the loss that precipitation causes vanadium in solution once more.Therefore, leach in the forward direction leaching agent add with leaching agent in V
4+, the ammonium persulphate that adapts of TFe molar weight sum, can effectively reduce the impact on the vanadium yield of iron at a low price, Low Valent Vanadium, also can eliminate its impact on lower step operation simultaneously.
Comprise the operations such as From Converter Vanadium-bearing Slag calcification baking, sulfuric acid leaching, precipitation and calcining according to the method for the production barium oxide of another aspect of the invention, wherein, the sulfuric acid leaching operation adopts leaching method as above to realize.
Below in conjunction with concrete example and Comparative Examples, exemplary embodiment of the present invention is further elaborated.Concrete example is only for the present invention is described, rather than limits by any way the present invention.
Example 1
After getting the 200mL tap water and being warming up to 50 ℃, with sulfuric acid, regulate pH=3.2, stir and add the 6.5g ammonium persulphate, add the calcification grog agitation leach that the 100g iron-holder is 3% after 8min, leaching condition is: pH=2.8,50 ℃ of extraction temperatures, extraction time 60min; Filtration washing after leaching, analyze V in leach liquor
5+, V
4+, TFe concentration be respectively 27.75g/L,<0.05g/L, 0.015g/L, it is 85.5% that vanadium turns the rate of soaking.
Comparative Examples 1
Agitation leach after the calcification grog that to get the 100g iron-holder be 3% mixes in liquid-solid ratio 2:1 ratio with 200mL leaching agent (tap water), leach parameter and control: pH=2.8,50 ℃ of extraction temperatures, extraction time 60min, V in filtrate after filtration washing
5+, V
4+, TFe concentration is respectively 24.86g/L, 1.26g/L and 0.227g/L; It is 80.2% that vanadium turns the rate of soaking.
Example 2
Get 200mL V
5+, V
4+, TFe concentration be respectively 10g/L,<0.05g/L and 0.015g/L containing the vanadium thin liquid, be leaching agent, after being warming up to 50 ℃, regulate pH=3.9 with sulfuric acid, stir and add the 7.0g ammonium persulphate, add the calcification grog agitation leach that the 100g iron-holder is 3% after 3min, leaching condition is: pH=3.1,40 ℃ of extraction temperatures, extraction time 50min; Filtration washing after leaching, analyze V in leach liquor
5+, V
4+, TFe concentration is respectively 29.75,<0.05g/L, 0.015g/L, it is 85.6% that vanadium turns the rate of soaking.
Comparative Examples 2
Get 200mL V
5+, V
4+, TFe concentration be respectively 10g/L,<0.05g/L and 0.015g/L containing the vanadium thin liquid, be leaching agent, with the calcification grog agitation leach that is 3% of 100g iron-holder.The leaching parameter is controlled: pH=3.1,40 ℃ of extraction temperatures, extraction time 50min, V in leach liquor after filtration washing
5+, V
4+, TFe concentration is respectively 26.49g/L, 1.21g/L and 0.25g/L; It is 78.1% that vanadium turns the rate of soaking.
Example 3
Get 200mL V
5+, V
4+, TFe concentration be respectively 6.45g/L, 1.48g/L and 0.26g/L containing the vanadium thin liquid be leaching agent, regulate pH=3.5 with sulfuric acid after being warming up to 55 ℃, stirring adds the 1.37g ammonium persulphate, after 10min, add the calcification grog that the 100g iron-holder is 3% to make slip, add again the 8g ammonium persulphate after regulating pH=3.5 with sulfuric acid again after being warming up to 45 ℃, agitation leach after 3min, the leaching parameter is: pH=3.0,50 ℃ of extraction temperatures, extraction time 70min; V in leach liquor after filtration washing
5+, V
4+, TFe concentration is respectively 30.75,<0.05g/L, 0.015g/L, it is 86.4% that vanadium turns the rate of soaking.
Comparative Examples 3
Get 200mL V
5+, V
4+, TFe concentration is respectively 6.45g/L, 1.48g/L and 0.26g/L containing the vanadium thin liquid, is leaching agent, with the calcification grog agitation leach that is 3% of 100g iron-holder.The leaching parameter is controlled: pH=3.0,50 ℃ of extraction temperatures, extraction time 70min.V in filtrate after filtration washing
5+, V
4+, TFe concentration is respectively 21.27g/L, 1.84g/L and 0.246g/L; It is 72.6% that vanadium turns the rate of soaking.
In sum, method of the present invention has the following advantages:
(1) the leach liquor color becomes normal.Because oxygenant can oxidation tetravalence vanadium be pentavalent, V after infusion solution filters
4+concentration, lower than 0.05%, can not affect the leach liquor color.
(2) vanadium turns the rate of soaking and increases substantially.Owing to having added oxygenant, it is Fe (OH) that low price iron is able to Quick Oxidation
3precipitation, V
4+be oxidized to V
5+be difficult for hydrolytic precipitation, V after solution filter
4+concentration, lower than 0.05%, has alleviated the impact on the vanadium yield.
(3) organization of production is stable, cost.Leach the normal production of operation because impact appears in black leach liquor frequently, also make vanadium lose in a large number simultaneously.This method effectively reduces vanadium loss unnecessary in leaching process, is conducive to the reduction of production cost and the increase of Production Gain.
Although the above has described the present invention in conjunction with exemplary embodiment, those of ordinary skills should be clear, in the situation that do not break away from the spirit and scope of claim, can carry out various modifications to above-described embodiment.
Claims (9)
1. a high swage, containing the leaching method of vanadium calcification grog, is characterized in that, described leaching method comprises the following steps of carrying out successively:
High swage is added to the water containing vanadium calcification grog, stirs and form slurry, wherein, high swage contains containing in vanadium calcification grog the iron that is not less than by weight 2%;
With sulfuric acid, the pH of slurry being controlled is 3～4, then adds ammonium persulphate, and wherein, the add-on of ammonium persulphate can be oxidized to ferric iron containing the ferro element in vanadium calcification grog by high swage;
With sulfuric acid, further the pH of slurry being controlled is 2.6～3.2, under agitation condition, leaches, and then filters, and obtains leach liquor.
2. high swage according to claim 1, containing the leaching method of vanadium calcification grog, is characterized in that, described high swage contains 2%～6% iron containing in vanadium calcification grog.
3. high swage according to claim 1, containing the leaching method of vanadium calcification grog, is characterized in that, it is 30～60 ℃ that the described step that adds ammonium persulphate and the described step leached under agitation condition are controlled the temperature of slurry.
4. high swage according to claim 3, containing the leaching method of vanadium calcification grog, is characterized in that, in the described step leached under agitation condition, extraction time is 45min～75min.
5. a high swage, containing the leaching method of vanadium calcification grog, is characterized in that, described leaching method comprises the following steps of carrying out successively:
Add ammonium persulphate in leaching agent, wherein, the composition of leaching agent contains the V of 3～10g/L by weight
5+, 0.05～2.0g/L V
4+, the TFe of 0.015～0.3g/L, the pH of leaching agent is 3～4, the add-on of ammonium persulphate can be by the V in leaching agent
4+be oxidized to V with TFe
5+and ferric iron;
High swage is added in leaching agent containing vanadium calcification grog, stir and form slurry, wherein, high swage contains containing in vanadium calcification grog the iron that is not less than by weight 2%;
With sulfuric acid, the pH of slurry being controlled is 3～4, then adds ammonium persulphate, and wherein, the add-on of ammonium persulphate can be oxidized to ferric iron containing the ferro element in vanadium calcification grog by high swage;
With sulfuric acid, further the pH of slurry being controlled is 2.6～3.2, under agitation condition, leaches, and then filters, and obtains leach liquor.
6. high swage according to claim 5, containing the leaching method of vanadium calcification grog, is characterized in that, described high swage contains 2%～6% iron containing in vanadium calcification grog.
7. high swage according to claim 5 is containing the leaching method of vanadium calcification grog, it is characterized in that, described step to adding ammonium persulphate in leaching agent, the described pH of slurry control with sulfuric acid be that 3～4 step and the described step leached under agitation condition control the temperature of slurry are 30～60 ℃.
8. high swage according to claim 7, containing the leaching method of vanadium calcification grog, is characterized in that, in the described step leached under agitation condition, extraction time is 45min～75min.
9. a method of producing barium oxide, described method comprises From Converter Vanadium-bearing Slag calcification baking, sulfuric acid leaching, precipitation and calcining, it is characterized in that, described sulfuric acid leaching adopts leaching method as claimed in any of claims 1 to 8 in one of claims to realize.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105219976A (en) * | 2015-11-19 | 2016-01-06 | 攀钢集团西昌钢钒有限公司 | Improve the method for vanadium slag calcification baking grog leaching yield |
| CN105274336A (en) * | 2015-11-27 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for stabilizing leaching solution in calcification vanadium extraction process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161831A (en) * | 2007-11-09 | 2008-04-16 | 攀钢集团攀枝花钢铁研究院 | Method for calcifying and roasting vanadium slag |
| CN102888512A (en) * | 2012-09-27 | 2013-01-23 | 攀钢集团西昌钢钒有限公司 | Impurity removing method of vanadium solution |
-
2013
- 2013-08-23 CN CN2013103734695A patent/CN103436690A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101161831A (en) * | 2007-11-09 | 2008-04-16 | 攀钢集团攀枝花钢铁研究院 | Method for calcifying and roasting vanadium slag |
| CN102888512A (en) * | 2012-09-27 | 2013-01-23 | 攀钢集团西昌钢钒有限公司 | Impurity removing method of vanadium solution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105219976A (en) * | 2015-11-19 | 2016-01-06 | 攀钢集团西昌钢钒有限公司 | Improve the method for vanadium slag calcification baking grog leaching yield |
| CN105274336A (en) * | 2015-11-27 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for stabilizing leaching solution in calcification vanadium extraction process |
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Application publication date: 20131211 |