CN104152704A - Method for separating and recovering vanadium and chromium from vanadium-chromium slag - Google Patents
Method for separating and recovering vanadium and chromium from vanadium-chromium slag Download PDFInfo
- Publication number
- CN104152704A CN104152704A CN201410374796.7A CN201410374796A CN104152704A CN 104152704 A CN104152704 A CN 104152704A CN 201410374796 A CN201410374796 A CN 201410374796A CN 104152704 A CN104152704 A CN 104152704A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- chromium
- liquid phase
- solid
- roasting
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a method for separating and recovering vanadium and chromium from vanadium-chromium slag. The method comprises the following steps: (1) carrying out first roasting on the vanadium-chromium slag and first sodium-containing materials and carrying out solid-liquid separation after leaching the product obtained after first roasting in water, thus obtaining first solid phases and a first liquid phase; (2) carrying out solid-liquid separation after carrying out vanadium precipitation on the first liquid phase, thus obtaining second solid phases and a second liquid phase; (3) carrying out secondary roasting on the first solid phases and second sodium-containing materials and carrying out solid-liquid separation after leaching the product obtained after secondary roasting in water, thus obtaining third solid phases and a third liquid phase; (4) carrying out solid-liquid separation after contacting the second liquid phase with the third liquid phase and carrying out precipitation, thus obtaining fourth solid phases and a fourth liquid phase; (5) calcining the second solid phases and the fourth solid phases and extracting vanadium; and (6) reducing the fourth liquid phase and precipitating chromium. By the method, vanadium and chromium can be simply separated and recovered from the vanadium-chromium slag at high yield.
Description
Technical field
The present invention relates to a kind of from vanadium chromium slag the method for Separation and Recovery vanadium and chromium.
Background technology
Vanadium and chromium are important strategic resources, are widely used in the fields such as national defence, metallurgy, material and chemical industry.But in the production of vanadium and chromium, utilize in process, inevitably to produce pentavalent vanadium and sexavalent chrome.As everyone knows, pentavalent vanadium and sexavalent chrome are as heavy metal, and its compound has strong toxicity, and serious harm environment also produces huge damage to human body.According to media reports, in the heavier region of heavy metal contamination, the sickness rate of cancer is obviously higher.Based on environmental hazard and the consideration to HUMAN HEALTH and the added value of heavy metal own, pentavalent vanadium and sexavalent chrome must be processed recovery before discharge.Because vanadium is extremely close with chromium character, it flows to basic identical in hydrometallurgy, and therefore how implementing the separation of vanadium chromium is the key that vanadium chromium reclaims.
Up to the present, from vanadium chromium slag, extract and mainly contain containing the roasting of sodium material and sub-molten salt method with the method that separates vanadium chromium, the vanadium chromium slag after roasting is leached, the vanadium that it contains and chromium will be dissolved in solution simultaneously, then from solution, vanadium are separated with chromium.But the technological step that simultaneously separates respectively vanadium and chromium from same solution is various, it is comparatively difficult to separate.
CN102329964B disclose a kind of from vanadium chromium reduced waste residue the processing method of Separation and Recovery vanadium and chromium, wherein, the method mainly comprises: (1) washes the water-soluble salt in vanadium chromium reduced waste residue with water, obtain respectively after filtering filter cake (I) and washings, after washings evaporative crystallization, separate out water-soluble salt crystal; (2) filter cake (I) is placed in to basic solution, and adds oxygenant to carry out the Oxidation Leaching of vanadium, the slurry obtaining after leaching obtains filter cake (II) and leach liquor after filtering; (3) filter cake (II) water step (2) being obtained washs, and obtains respectively after filtering containing vanadium washings and filter cake (III); (4) what step (3) is obtained carries out evaporation concentration containing vanadium washings, obtains concentrated solution; (5) concentrated solution that leach liquor step (2) being obtained and step (4) obtain merges, and crystallisation by cooling obtains sodium vanadate crystal; (6) filter cake to step (3) (III) leaches to extract chromium wherein in sulphuric acid soln, obtains liquid-solid mixed slurry; (7) in the slurry obtaining to step (6), add oxygenant be oxidized iron ion wherein and regulate pH value with precipitated impurities, carry out filtering separation, obtain respectively acid leaching solution and finishing slag; (8) acid leaching solution step (7) being obtained carries out evaporative crystallization, and precipitate is basic chromium sulfate.The sodium vanadate product purity that the method makes more than 93%, Cr in basic chromium sulfate
2o
3content can reach 24%, Fe content and be less than 0.1%, meets the requirement for basic chromium sulfate I series products in HG/T2678-2007.But, the object of the method processing is vanadium chromium reduced waste residue, in vanadium chromium reduced waste residue, vanadium exists with oxyhydroxide or the oxide form of tetravalence or three valence states, can under the condition in aforesaid method, be oxidized, and vanadium chromium thing is vanadium picotite mutually in vanadium chromium slag, be difficult to selective oxidation vanadium under the condition of aforesaid method.In addition, the method steps of this patent is various comparatively complicated, is unfavorable for suitability for industrialized production.
Summary of the invention
The object of the invention is to overcome existing from vanadium chromium slag various, the separation difficulty of step when Separation and Recovery vanadium and chromium, be unfavorable for the defect of suitability for industrialized production, provide a kind of step few, separate simple and be conducive to and the Separation and Recovery vanadium from vanadium chromium slag of suitability for industrialized production and the method for chromium.
To achieve these goals, the invention provides a kind of from vanadium chromium slag the method for Separation and Recovery vanadium and chromium, wherein, the method comprises:
(1) vanadium chromium slag and first is carried out to the first roasting containing sodium material, and the product after the first roasting is carried out to solid-liquid separation after water logging, obtain the first solid phase and the first liquid phase;
(2) described the first liquid phase is carried out to solid-liquid separation after precipitation, obtain second solid phase and second liquid phase;
(3) described the first solid phase and second is carried out to the second roasting containing sodium material, and the product after the second roasting is carried out to solid-liquid separation after water logging, obtain the 3rd solid phase and the 3rd liquid phase;
(4) described second liquid phase is contacted with described the 3rd liquid phase and precipitate after carry out solid-liquid separation, obtain the 4th solid phase and the 4th liquid phase;
(5) described second solid phase and the 4th solid phase are calcined to vanadium extraction;
(6) the 4th liquid phase is reduced to heavy chromium.
By adopting method of the present invention, the successfully Separation and Recovery from vanadium chromium slag by vanadium and chromium, realize from vanadium chromium slag the substep of vanadium and chromium has been extracted, and step is few, simple to operate, be beneficial to suitability for industrialized production, especially one of the present invention preferred embodiment in, the yield of vanadium is up to more than 90 % by weight, and the yield of chromium is up to more than 93 % by weight.
Other features and advantages of the present invention are described in detail the embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
The invention provides a kind of from vanadium chromium slag the method for Separation and Recovery vanadium and chromium, wherein, the method comprises:
(1) vanadium chromium slag and first is carried out to the first roasting containing sodium material, and the product after the first roasting is carried out to solid-liquid separation after water logging, obtain the first solid phase and the first liquid phase;
(2) described the first liquid phase is carried out to solid-liquid separation after precipitation, obtain second solid phase and second liquid phase;
(3) described the first solid phase and second is carried out to the second roasting containing sodium material, and the product after the second roasting is carried out to solid-liquid separation after water logging, obtain the 3rd solid phase and the 3rd liquid phase;
(4) described second liquid phase is contacted with described the 3rd liquid phase and precipitate after carry out solid-liquid separation, obtain the 4th solid phase and the 4th liquid phase;
(5) described second solid phase and the 4th solid phase are calcined to vanadium extraction;
(6) the 4th liquid phase is reduced to heavy chromium.
The method according to this invention goes for this area various vanadium chromium slag to carry out the processing that vanadium separates with chromium, and for example described vanadium chromium slag can be the vanadium chromium slag of the rear gained of blowing from vanadium-bearing hot metal.And method of the present invention is applicable to the processing of the vanadium chromium slag to any vanadium and chromium content, under preferable case, be specially adapted in the vanadium chromium slag of method processing of the present invention, the content of v element is 2-35 % by weight, the content of chromium element is 1.5-40 % by weight.More preferably, in described vanadium chromium slag, the content of v element is 3-10 % by weight, and the content of chromium element is 2-10 % by weight.
According to the present invention, in step (1), first described vanadium chromium slag and described first is carried out to the first roasting containing sodium material.Described vanadium chromium slag, in the first roasting process, owing to having there is the oxidized process of vanadium, makes product after the first roasting carry out solid-liquid separation after water logging, most vanadium can be leached, and chromium is retained in the first solid phase substantially.In order to obtain higher vanadium yield and chromium still less to be leached, under preferable case, the condition of described the first roasting comprises: temperature is 550-800 DEG C, and the time is 50-180min.More preferably, the condition of described the first roasting comprises: temperature is 550-780 DEG C, and the time is 60-180min.Still more preferably, the condition of described the first roasting comprises: temperature is 700-780 DEG C, and the time is 90-120min.
According to the present invention, do not limit especially containing sodium material described first, can adopt the conventional sodium roasting containing vanadium material containing sodium material, under preferable case, described first is one or more in sodium carbonate, sodium bicarbonate and sodium hydroxide containing sodium material, more preferably sodium carbonate and/or sodium bicarbonate.
In described the first roasting, described vanadium chromium slag and first is not particularly limited containing the consumption of sodium material, can adjust according to the actual composition of vanadium chromium slag.Under preferable case, in Na element described first containing sodium material with the mol ratio taking the described vanadium chromium slag of V element as 2-10:1, more preferably 2.5-7:1 (in the present invention, described " in the described vanadium chromium slag of V element " refers to the consumption that represents vanadium chromium slag with the molar weight of the v element in described vanadium chromium slag, in like manner for explaining " in Na element containing sodium material ", " in the vanadium chromium slag of Cr element " etc.).
According to the present invention, in step (1), the product after described the first roasting is carried out to solid-liquid separation after water logging, can obtain the first solid phase and the first liquid phase.Wherein, in the first solid phase, remain vanadium and the most chromium of part, in described the first liquid phase, contain most vanadium soluble salt.In the present invention, the water logging of step (1) be there is no to special restriction, as long as can realize the object that in the product after described the first roasting, most vanadium leaches and chromium does not leach.Under preferable case, the condition of the water logging in step (1) comprises: temperature is 15-100 DEG C, and the time is 5-60min.In order to obtain better leaching effect, more preferably, the condition of the water logging in step (1) comprises: temperature is 25-100 DEG C, and the time is 30-60min.
The water that water logging adopts can be one or more in deionized water, distilled water, tap water, industrial reuse water etc., but consider for the aspect reducing costs, preferably adopt and go industrial reuse water and/or tap water to carry out described water logging (selection of the water for water logging is here applicable to the water logging of step (1) and step (3) simultaneously, still should be understood that the water logging of step (1) and step (3) can select different types of water to leach processing).In the present invention, the weight ratio of water in the water logging of the product after the first roasting and step (1) is not particularly limited the ratio that can adopt this area routine to use when carrying out water logging.But consider for improving the yield of vanadium and the aspect of saving water resource, preferably, in the water logging of step (1), the weight ratio (liquid-solid ratio) of the product after water and described the first roasting is 1.2-5:1, more preferably 1.2-3:1, is further preferably 1.8-2.2:1.
According to the present invention, in step (2), described the first liquid phase is carried out to solid-liquid separation after precipitation, obtain second solid phase and second liquid phase, wherein, described second solid phase refers to the solid product containing vanadium after precipitation, second liquid phase is vanadium wastewater.
In the present invention, the method of described precipitation is not had to any restriction, can adopt ammonium salt precipitation or hydrolysis precipitation: wherein, described ammonium salt precipitation refers to and adopts ammonium ion replacing water sodium ion in liquor, and form a process of ammonium poly-vanadate with vanadium, ammonium salt can be for example one or more in ammonium sulfate, ammonium chloride, bicarbonate of ammonia etc., and what ammonium salt precipitation obtained is the solid product containing vanadium of ammonium poly-vanadate; Described hydrolysis precipitation refers under acidic conditions, the process that vanadium is separated out with precipitation forms, and what hydrolysis precipitation obtained is the solid product containing vanadium of hydration Vanadium Pentoxide in FLAKES.
In the process of described precipitation, no matter adopt which kind of precipitation method of above-mentioned two kinds, all need under acidic conditions, carry out, after precipitation, carry out solid-liquid separation, the second liquid phase obtaining is vanadium wastewater, and this vanadium wastewater is acid too, preferably, the pH of described second liquid phase (vanadium wastewater) is preferably 1.5-5.5, and more preferably 2-5 is further preferably 2-3.5.At this, it can be organic acid, mineral acid that the acid of described acidic conditions is provided, and is preferably sulfuric acid and/or hydrochloric acid.
According to the present invention, can directly the second solid phase of step (2) gained be calcined to extract vanadium, or calcine to extract vanadium together with the 4th solid phase obtaining with step (4), and described second solid phase and the 4th solid phase calcined to vanadium extraction comprised this two kinds of modes in step of the present invention (5).Described calcining can be the method for the calcining precipitation product of ability routine, does not repeat them here.
According to the present invention, in step (3), described the first solid phase and second is carried out to the second roasting containing sodium material, owing to carrying out water logging solid-liquid separation after the first roasting, most vanadium is separated, improved material performance simultaneously, thus oxidation that can more favourable vanadium chromium in the second roasting process, thus be more conducive to improve the yield of vanadium and chromium.Preferably, the condition of described the second roasting comprises: temperature is 820-950 DEG C, and the time is 1-4h.More preferably, described the second roasting condition comprises: temperature is 840-920 DEG C, and the time is 2-4h.
According to the present invention, described second can be the conventional sodium additives that contains for adopting containing the sodium roasting method of chromium material containing sodium material, for example, be one or more in sodium oxide, sodium hydroxide, sodium carbonate and sodium bicarbonate.
According to the present invention, in described the second roasting, described second solid phase and second is not particularly limited containing the consumption of sodium material, can in wider scope, adjust.Under preferable case, in Na element described second containing sodium material with the mol ratio taking the described vanadium chromium slag of Cr element as 3-15:1, more preferably 4-8:1, is further preferably 4.2-7.4:1.In the present invention, described second solid phase can be that dried material can be also the filter residue of solid-liquid separation gained after the water logging of step (1), for convenience's sake, being preferably is the filter residue of solid-liquid separation gained after the water logging of step (1), therefore described second solid phase can contain a small amount of water, for example the water below 20 % by weight.
According to the present invention, in step (3), product after the second roasting is carried out to solid-liquid separation after water logging, to obtain the 3rd solid phase and the 3rd liquid phase, wherein, in the 3rd liquid phase, contain most chromium and a small amount of vanadium, and the residue that the 3rd solid phase is final gained, the present invention can comparatively fully leach the vanadium in described vanadium chromium slag and chromium, in a kind of preferred implementation of the present invention, in described the 3rd solid phase, the content of v element is below 0.25 % by weight, and the content of chromium element is below 0.31 % by weight.In the present invention, the water logging of step (3) be there is no to special restriction, as long as can realize the object that in the product after described the second roasting, most chromium leaches.Under preferable case, the condition of the water logging in step (3) comprises: temperature is 15-100 DEG C, and the time is 5-60min.In order to obtain better leaching effect, more preferably, the condition of the water logging in step (3) comprises: temperature is 25-50 DEG C, and the time is 20-30min.
In the product of the present invention after to the second roasting and the water logging in step (3), the weight ratio of water is not particularly limited, the ratio that can adopt this area routine to use when carrying out water logging.But for improving the yield of chromium and the consideration of saving water resource, preferably, in step (3), the mass ratio (liquid-solid ratio) of the product after water and described the second roasting is 1.2-5:1, more preferably 1.5-3:1, is further preferably 1.8-2.2:1.
According to the present invention, in step (4), the second liquid phase of step (2) gained (being vanadium wastewater) is contacted with the 3rd liquid phase of step (3) gained and precipitate after carry out solid-liquid separation, obtain the 4th solid phase and the 4th liquid phase, wherein, second liquid phase as vanadium wastewater is contacted and is equivalent to the 3rd liquid phase to carry out precipitation with the 3rd liquid phase, obtain i.e. the 4th solid phase of precipitation product containing vanadium, and chromium is stayed in the 4th liquid phase, do like this utilization not only having realized vanadium wastewater, save resource, but also can carry out better the recovery of vanadium, and the separating of vanadium and chromium.In order to realize better above-mentioned purpose, preferably, before described contact, first described second liquid phase is heated to 60-100 DEG C (more preferably 80-100 DEG C).When described second liquid phase being heated to after the 60-100 DEG C of temperature in (more preferably 80-100 DEG C) scope, then contact with the 3rd liquid phase, can separate out better vanadium.
According to the present invention, in step (6), described the 4th liquid phase is reduced to heavy chromium.The heavy chromium of described reduction refers to that in the aqueous solution, the chromium of hexavalent state is reduced into chromic process, the present invention is not particularly limited the process of the heavy chromium of described reduction, for example can adopt S-WAT, sulphur, Sodium Pyrosulfite, oxalic acid, glucose etc. as reducing substances, the pH of the heavy chromium of described reduction can be 4.5-9.
By adopting method of the present invention, can obtain the yield of vanadium up to more than 90 % by weight, the yield of chromium is up to more than 93 % by weight.
Below will describe the present invention by embodiment.
In following examples and comparative example,
Vanadium chromium slag is through the slag charge containing gained after the blowing of vanadium chromium hot melt;
The yield of vanadium refers to after calcining in the vanadium product of gained the per-cent of the weight of v element in the weight of v element and vanadium chromium slag;
The yield of chromium refers to after calcining in the chromium product of gained the per-cent of the weight of chromium element in the weight of chromium element and vanadium chromium slag.
Embodiment 1
The present embodiment is for illustrating the method from vanadium chromium slag Separation and Recovery vanadium and chromium of the present invention.
By 100g vanadium chromium slag (content of v element is 5.95 % by weight, and the content of chromium element is 6.05 % by weight) and 15.9g sodium carbonate in 750 DEG C of roasting 90min; Product after roasting being carried out at 80 DEG C to water logging 30min (liquid-solid ratio is 2:1) then filters, gained filtrate is carried out ammonium salt precipitation, obtain pH and be 2 vanadium wastewater and containing vanadium precipitation, will calcine the Vanadium Pentoxide in FLAKES product that obtains 8.5g containing vanadium precipitation; By the filter residue (110.3g after above-mentioned filtration, the content of water is 5 % by weight), 8g sodium oxide calcines 2h together with 9.6g sodium hydroxide at 820 DEG C, product after roasting being carried out at 60 DEG C to water logging 30min (liquid-solid ratio is 1.8:1) then filters, gained filtrate is poured in the above-mentioned vanadium wastewater that is heated to 80 DEG C and is carried out precipitation filtration, precipitating and calcining the Vanadium Pentoxide in FLAKES that obtains 1.17g containing vanadium gained, filtrate is reduced heavy chromium, obtains the chromium sesquioxide of 8.3g after calcining.The total recovery of vanadium is 91 % by weight, and the total recovery of chromium is 94 % by weight.
Embodiment 2
The present embodiment is for illustrating the method from vanadium chromium slag Separation and Recovery vanadium and chromium of the present invention.
By 100g vanadium chromium slag (content of v element is 3 % by weight, and the content of chromium element is 9.8 % by weight) and 30.87g sodium bicarbonate in 780 DEG C of roasting 60min; Product after roasting being carried out at 25 DEG C to water logging 60min (liquid-solid ratio is 3:1) then filters, the precipitation that is hydrolyzed of gained filtrate, obtain pH and be 3 vanadium wastewater and containing vanadium precipitation, will calcine the Vanadium Pentoxide in FLAKES product that obtains 4.82g containing vanadium precipitation; By the filter residue (117.8g after above-mentioned filtration, the content of water is 8 % by weight) and 70g sodium carbonate at 920 DEG C, calcine 2h together, product after roasting being carried out at 25 DEG C to water logging 15min (liquid-solid ratio is 1.5:1) then filters, gained filtrate is poured in the above-mentioned vanadium wastewater that is heated to 60 DEG C and is carried out precipitation filtration, precipitating and calcining the Vanadium Pentoxide in FLAKES that obtains 0.16g containing vanadium gained, filtrate is reduced heavy chromium, obtains the chromium sesquioxide of 13.595g after calcining.The total recovery of vanadium is 93 % by weight, and the total recovery of chromium is 97 % by weight.
Embodiment 3
The present embodiment is for illustrating the method from vanadium chromium slag Separation and Recovery vanadium and chromium of the present invention.
100g vanadium chromium slag (content of v element is 9.4 % by weight, and the content of chromium element is 1.7 % by weight) and 24.43g sodium carbonate are carried out to roasting 180min in 550 DEG C; Product after roasting being carried out at 100 DEG C to water logging 40min (liquid-solid ratio is 1.2:1) then filters, gained filtrate is carried out ammonium salt precipitation, obtain pH and be 3.5 vanadium wastewater and containing vanadium precipitation, will calcine the Vanadium Pentoxide in FLAKES product that obtains 12.416g containing vanadium precipitation; Filter residue (110.4g after above-mentioned filtration, the content of water is 5 % by weight), 3.27g sodium hydroxide calcines 4h together with 8.48g sodium carbonate at 950 DEG C, product after roasting being carried out at 40 DEG C to water logging 25min (liquid-solid ratio is 3:1) then filters, gained filtrate is poured in the above-mentioned vanadium wastewater that is heated to 90 DEG C and is carried out precipitation filtration, precipitating and calcining the Vanadium Pentoxide in FLAKES that obtains 2.685g containing vanadium gained, filtrate is reduced heavy chromium, and calcining obtains the chromium sesquioxide of 2.31g.The total recovery of vanadium is 90.2 % by weight, and the total recovery of chromium is 93.1 % by weight.
Comparative example 1
According to the method described in embodiment 1, difference is, by the filter residue of water logging gained and the product containing after the roasting of sodium material carry out water logging and filter for the first time, directly gained filtrate is reduced to heavy chromium, the total recovery of vanadium is 80 % by weight, and the total recovery of chromium is 94 % by weight (also containing the vanadium of 12 % by weight in the product of chromium).
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out arbitrary combination between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a method for Separation and Recovery vanadium and chromium from vanadium chromium slag, is characterized in that, the method comprises:
(1) vanadium chromium slag and first is carried out to the first roasting containing sodium material, and the product after the first roasting is carried out to solid-liquid separation after water logging, obtain the first solid phase and the first liquid phase;
(2) described the first liquid phase is carried out to solid-liquid separation after precipitation, obtain second solid phase and second liquid phase;
(3) described the first solid phase and second is carried out to the second roasting containing sodium material, and the product after the second roasting is carried out to solid-liquid separation after water logging, obtain the 3rd solid phase and the 3rd liquid phase;
(4) described second liquid phase is contacted with described the 3rd liquid phase and precipitate after carry out solid-liquid separation, obtain the 4th solid phase and the 4th liquid phase;
(5) described second solid phase and the 4th solid phase are calcined to vanadium extraction;
(6) the 4th liquid phase is reduced to heavy chromium.
2. method according to claim 1, wherein, the condition of described the first roasting comprises: temperature is 550-800 DEG C, the time is 50-180min.
3. method according to claim 1, wherein, the condition of described the second roasting comprises: temperature is 820-950 DEG C, the time is 1-4h.
4. method according to claim 1, wherein, in step (1), in Na element described first containing sodium material with the mol ratio taking the described vanadium chromium slag of V element as 2-10:1, be preferably 2.5-7:1.
5. method according to claim 1, wherein, in step (3), in Na element described second containing sodium material with the mol ratio taking the described vanadium chromium slag of Cr element as 3-15:1, be preferably 4-8:1.
6. method according to claim 1, wherein, described first is one or more in sodium carbonate, sodium bicarbonate and sodium hydroxide containing sodium material, is preferably sodium carbonate and/or sodium bicarbonate.
7. method according to claim 1, wherein, described second is one or more in sodium oxide, sodium hydroxide, sodium carbonate and sodium bicarbonate containing sodium material.
8. method according to claim 1, wherein, the pH of described second liquid phase is 1.5-5.5, is preferably 2-5.
9. method according to claim 1, wherein, in step (4), before described contact, is first heated to 60-100 DEG C by described second liquid phase.
10. method according to claim 1, wherein, in described vanadium chromium slag, the content of v element is 2-35 % by weight, the content of chromium element is 1.5-40 % by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374796.7A CN104152704B (en) | 2014-07-31 | 2014-07-31 | A kind of method of Separation and Recovery vanadium and chromium from vanadium chromium slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410374796.7A CN104152704B (en) | 2014-07-31 | 2014-07-31 | A kind of method of Separation and Recovery vanadium and chromium from vanadium chromium slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104152704A true CN104152704A (en) | 2014-11-19 |
| CN104152704B CN104152704B (en) | 2016-04-13 |
Family
ID=51878327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410374796.7A Active CN104152704B (en) | 2014-07-31 | 2014-07-31 | A kind of method of Separation and Recovery vanadium and chromium from vanadium chromium slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104152704B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762484A (en) * | 2015-04-03 | 2015-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium and chromium from slag containing vanadium and chromium |
| CN104762494A (en) * | 2015-04-03 | 2015-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting chromium from chromite |
| CN106893877A (en) * | 2017-02-27 | 2017-06-27 | 中南大学 | A kind of method that vanadium chromium is extracted in the chromic acid mixed salt solution from vanadium |
| CN106916950A (en) * | 2017-03-06 | 2017-07-04 | 中信锦州金属股份有限公司 | A kind of method for producing low chromium ammonium poly-vanadate |
| CN107890621A (en) * | 2017-10-18 | 2018-04-10 | 华南理工大学 | A kind of method for innocent treatment containing the poisonous solid waste of Cr VI |
| CN108179265A (en) * | 2018-01-29 | 2018-06-19 | 东北大学 | A kind of method from separation and Extraction vanadium in material containing chrome alum |
| CN108251636A (en) * | 2018-01-29 | 2018-07-06 | 东北大学 | A kind of method for roasting the Leaching of Vanadium from Vanadium slag containing chromium |
| CN110343866A (en) * | 2019-08-15 | 2019-10-18 | 攀钢集团钒钛资源股份有限公司 | The method of vanadium chromium is separated from vanadium chromium reducing slag |
| CN110408789A (en) * | 2019-09-11 | 2019-11-05 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of sodium is recycled from solution containing vanadium |
| CN110436523A (en) * | 2019-09-11 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | The method that vanadium chromium solution cleaning prepares vanadium product and sodium chromate |
| CN110436520A (en) * | 2019-09-11 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for preparing vanadium product using sodium vanadate cleaning |
| CN110438347A (en) * | 2019-09-11 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Sodium cleans extraction vanadium method |
| CN111041205A (en) * | 2019-12-18 | 2020-04-21 | 昆明理工大学 | Method for separating vanadium and chromium from vanadium and chromium solution |
| CN111139359A (en) * | 2020-01-16 | 2020-05-12 | 湖北振华化学股份有限公司 | Method for extracting chromium from chromium slag and pretreating chromium slag by acid leaching |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276205A (en) * | 2013-05-29 | 2013-09-04 | 东北大学 | Method for separating and extracting vanadium and chromium from vanadium chromium leaching liquor |
| CN103614566A (en) * | 2013-12-13 | 2014-03-05 | 重庆大学 | Method for extracting vanadium and chromium from converter vanadium chromium slag |
| CN103757425A (en) * | 2013-11-04 | 2014-04-30 | 中国科学院过程工程研究所 | Cleaning process for producing sodium vanadate and sodium chromate alkali solution by high chromium vanadium slag |
| CN103924096A (en) * | 2014-04-28 | 2014-07-16 | 攀枝花学院 | Method for recycling vanadium-chromium resources |
-
2014
- 2014-07-31 CN CN201410374796.7A patent/CN104152704B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276205A (en) * | 2013-05-29 | 2013-09-04 | 东北大学 | Method for separating and extracting vanadium and chromium from vanadium chromium leaching liquor |
| CN103757425A (en) * | 2013-11-04 | 2014-04-30 | 中国科学院过程工程研究所 | Cleaning process for producing sodium vanadate and sodium chromate alkali solution by high chromium vanadium slag |
| CN103614566A (en) * | 2013-12-13 | 2014-03-05 | 重庆大学 | Method for extracting vanadium and chromium from converter vanadium chromium slag |
| CN103924096A (en) * | 2014-04-28 | 2014-07-16 | 攀枝花学院 | Method for recycling vanadium-chromium resources |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762494A (en) * | 2015-04-03 | 2015-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting chromium from chromite |
| CN104762494B (en) * | 2015-04-03 | 2017-05-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting chromium from chromite |
| CN104762484A (en) * | 2015-04-03 | 2015-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium and chromium from slag containing vanadium and chromium |
| CN106893877A (en) * | 2017-02-27 | 2017-06-27 | 中南大学 | A kind of method that vanadium chromium is extracted in the chromic acid mixed salt solution from vanadium |
| CN106893877B (en) * | 2017-02-27 | 2018-12-21 | 中南大学 | A method of extracting vanadium chromium from vanadium chromic acid mixed salt solution |
| CN106916950B (en) * | 2017-03-06 | 2018-08-21 | 中信锦州金属股份有限公司 | A method of producing low chromium ammonium poly-vanadate |
| CN106916950A (en) * | 2017-03-06 | 2017-07-04 | 中信锦州金属股份有限公司 | A kind of method for producing low chromium ammonium poly-vanadate |
| CN107890621B (en) * | 2017-10-18 | 2020-02-18 | 华南理工大学 | Harmless treatment method for toxic solid waste containing hexavalent chromium |
| CN107890621A (en) * | 2017-10-18 | 2018-04-10 | 华南理工大学 | A kind of method for innocent treatment containing the poisonous solid waste of Cr VI |
| CN108251636A (en) * | 2018-01-29 | 2018-07-06 | 东北大学 | A kind of method for roasting the Leaching of Vanadium from Vanadium slag containing chromium |
| CN108179265A (en) * | 2018-01-29 | 2018-06-19 | 东北大学 | A kind of method from separation and Extraction vanadium in material containing chrome alum |
| CN110343866A (en) * | 2019-08-15 | 2019-10-18 | 攀钢集团钒钛资源股份有限公司 | The method of vanadium chromium is separated from vanadium chromium reducing slag |
| CN110343866B (en) * | 2019-08-15 | 2021-09-28 | 攀钢集团钒钛资源股份有限公司 | Method for separating vanadium and chromium from vanadium and chromium reduction slag |
| CN110408789A (en) * | 2019-09-11 | 2019-11-05 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of sodium is recycled from solution containing vanadium |
| CN110436523A (en) * | 2019-09-11 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | The method that vanadium chromium solution cleaning prepares vanadium product and sodium chromate |
| CN110436520A (en) * | 2019-09-11 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for preparing vanadium product using sodium vanadate cleaning |
| CN110438347A (en) * | 2019-09-11 | 2019-11-12 | 攀钢集团攀枝花钢铁研究院有限公司 | Sodium cleans extraction vanadium method |
| CN111041205A (en) * | 2019-12-18 | 2020-04-21 | 昆明理工大学 | Method for separating vanadium and chromium from vanadium and chromium solution |
| CN111139359A (en) * | 2020-01-16 | 2020-05-12 | 湖北振华化学股份有限公司 | Method for extracting chromium from chromium slag and pretreating chromium slag by acid leaching |
| CN111139359B (en) * | 2020-01-16 | 2022-02-25 | 湖北振华化学股份有限公司 | Method for extracting chromium from chromium slag and pretreating chromium slag by acid leaching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104152704B (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104152704B (en) | A kind of method of Separation and Recovery vanadium and chromium from vanadium chromium slag | |
| CN106893877B (en) | A method of extracting vanadium chromium from vanadium chromic acid mixed salt solution | |
| CN102121068B (en) | Method for preparing vanadium pentoxide | |
| CN102329964B (en) | Method for separating and recovering vanadium and chromium from vanadium-chromium reduced waste residue | |
| RU2736539C1 (en) | Method of producing vanadium oxide of a battery grade | |
| CN103468979B (en) | The method of scandium is reclaimed from smelting laterite-nickel ores iron aluminium slag | |
| CN104263946A (en) | Method for recovering tungsten, vanadium and titanium from waste SCR (selective catalytic reduction) denitration catalyst | |
| CN103468978B (en) | A kind of method carrying scandium from laterite nickel ore by sulfuric acid leaching liquid | |
| CN103468949B (en) | A kind for the treatment of process containing scandium nickel hydroxide cobalt | |
| CN106987732B (en) | A method of separation and recovery vanadium chromium | |
| CN104831075A (en) | Method for separating and purifying vanadium and molybdenum of waste vanadium-molybdenum SCR (selective catalytic reduction) catalyst | |
| CN103468972B (en) | The treatment process of red soil nickel ore synthetical recovery scandium and nickel cobalt | |
| CN103602819A (en) | Comprehensive recovery method of vanadate-chromate-containing solution | |
| CN104388683A (en) | Method for separating and recycling vanadium and chromium from vanadium and chromium-containing material | |
| CN103276205A (en) | Method for separating and extracting vanadium and chromium from vanadium chromium leaching liquor | |
| CN110092419B (en) | Method for preparing high-purity ammonium polyvanadate | |
| CN103290224A (en) | Recovery process for valuable metals in tungsten residues | |
| CN101838735B (en) | Method for extracting valuable metals from acid leaching solution of nickel-molybdenum multi-metal metallurgical materials by separation | |
| CN105567964A (en) | Method for selectively reducing, separating and recycling vanadium and chrome from solution containing vanadium and chrome | |
| CN104178637B (en) | A kind of method separating and recovering vanadium and chromium from vanadium chromium slag | |
| CN103468980B (en) | A kind of red soil nickel ore extracts the method for scandium | |
| CN105565376A (en) | Recovery process of SCR waste catalyst | |
| CN104726724A (en) | Method for extracting scandium from nickel laterite ores | |
| CN103952560A (en) | Method for extracting vanadium from vanadium slag | |
| CN102676810A (en) | Method for separating and recycling vanadium and chromium from vanadate-chromate-containing solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |