CN109825723A - A method of utilizing alkaline tailings depth vanadium extraction - Google Patents
A method of utilizing alkaline tailings depth vanadium extraction Download PDFInfo
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Abstract
The present invention relates to a kind of method using alkaline tailings depth vanadium extraction, the methods are as follows: mix alkaline tailings with vanadium-containing material, then roast gained mixed material；Roasting clinker obtains after being leached with water containing vanadium solution and leached mud.The present invention, which mixes alkaline tailings in vanadium extraction directly as raw material and vanadium-containing material, to react, and has apparent advantage compared with traditional tailings processing technique.Its simple process, process are short, realize the resource utilization to sodium salt in alkaline tailings in vanadium extraction, while the vanadium in high efficiente callback tailings in vanadium extraction, the high-efficiency cleaning that realizes vanadium utilize, and are conducive to save the cost, with good economic efficiency and application prospect.
Description
Technical field
The invention belongs to the utilizations of resources and environmental technology field, and in particular to a kind of side using alkaline tailings depth vanadium extraction
Method.
Background technique
Vanadium is a kind of important non-ferrous metal, and vanadium and its alloy are widely used in the technologies such as metallurgy, petrochemical industry, national defence neck
Domain.Currently, vanadium slag mostly uses rotary kiln sodium method roasting technique in the smelting process of vanadium titano-magnetite, vanadium is extracted in vanadium slag
Later, vanadium, sodium content are relatively high in waste residue (i.e. tailings in vanadium extraction).And these tailings in vanadium extraction would generally be accumulated such as by direct emission
Mountain not only causes tailings valuable resource to waste, but also high-alkali, the heavy metal in tailings also can cause to seriously affect to dirty environment.
CN102337444A discloses a kind of technology for producing vanadium chromium manganese alloyed pig iron by melting vanadium extraction tailings, and tailings in vanadium extraction powder is made
Feed particles are mixed with coke, ilmenite, lime stone, dolomite and fluorite, obtain the vanadium-containing alloy pig iron by smelting furnace.
CN108977744A discloses a kind of method that plasma spraying tailings in vanadium extraction prepares photothermal conversion coating, and tailings in vanadium extraction is prepared
At the tailings in vanadium extraction reunion powder for plasma spraying, sprayed after being surface-treated to the Stainless Steel metal matrix material of required coating
Bond coating, the method for then using plasma spraying, is sprayed on the bond coating table that upper step obtains for tailings in vanadium extraction reunion powder
Face, preparation form photothermal conversion coating.CN108383165A discloses ferric vandate preparation and produces vanadic anhydride using it
Method will contain and adjust pH after vanadium tailing soil is mixed with water as 0.6-1.5, and it is 6.5-8.0 that pH is adjusted after separation of solid and liquid, and stirring precipitates
To ferric vandate.Although above method realizes the effective use to tailings in vanadium extraction, but there are operating procedure complexity, process flow
Long, the problems such as energy consumption is high, it is unfavorable for promoting.
CN103952558A discloses vanadium titano-magnetite tailings in vanadium extraction method for removing sodium, and this method can be real under low-temperature atmosphere-pressure
The efficient removal of sodium, the Na in vanadium titano-magnetite tailings in vanadium extraction obtained after processing in existing vanadium titano-magnetite tailings in vanadium extraction2O exists
0.2% or less.CN105671327A provides method for removing sodium containing vanadium tailing soil under a kind of alkaline condition, this under alkaline condition,
By the synergistic effect of calcium additive and alkaline material, the efficient removal containing sodium in vanadium tailing soil may be implemented, obtained after making processing
Containing the alkali metal in vanadium tailing soil (with Na2O meter) content by > 4wt% is reduced to 1wt% or less.But the above method only will
Sodium in tailings in vanadium extraction reduces, and the valuable metal element of tailings does not make full use of.
Existing tailings in vanadium extraction processing technique, is difficult to realize simultaneously and makes full use of to valuable material in tailings, and universal
There is complex process, energy consumption is high the problems such as, cause recycling lose more than gain.Therefore, it needs to develop a kind of new processing alkalinity
The technology of tailings in vanadium extraction, effectively to solve the above problems.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of methods using alkaline tailings depth vanadium extraction, existing
Process for extracting vanadium on the basis of, alkaline tailings in vanadium extraction is mixed directly as raw material and vanadium-containing material and is reacted, is realized to alkali
The resource utilization of valuable material in property tailings in vanadium extraction, and it is simple process, at low cost, it has a extensive future.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of method using alkaline tailings depth vanadium extraction of the present invention, the method use following steps:
(1) alkaline tailings is mixed with vanadium-containing material, gained mixed material is roasted；
(2) roasting clinker obtained by step (1) is leached with water, is obtained after separation of solid and liquid containing vanadium solution and leached mud.
According to the present invention, step (1) the alkaline tailings is the tailings in vanadium extraction obtained after vanadium extraction under alkaline condition.
According to the present invention, based on mass percentage, Na content is 8-15% in step (1) the alkaline tailings, such as
It can be 8%, 9%, 10%, 11%, 12%, 13%, 14% or 15% etc., as space is limited and for concise consideration, no longer
Exclusive list.
According to the present invention, based on mass percentage, V content is 0.7-1.5%, example in step (1) the alkaline tailings
Such as can be 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4% or 1.5%, as space is limited and for
Concise consideration, no longer exclusive list.
According to the present invention, based on mass percentage, the content of water is 20-30%, example in step (1) the alkaline tailings
Such as can be 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29% or 30%, as space is limited and
For concise consideration, no longer exclusive list.
According to the present invention, based on mass percentage, the content of V is 1-2.5%, example in step (1) described vanadium-containing material
It such as can be 1%, 1.3%, 1.5%, 1.8%, 2%, 2.3% or 2.5%, as space is limited and for concise consideration, no
Exclusive list again.
According to the present invention, step (1) the alkaline tailings and the mass ratio of vanadium-containing material are (0.08-0.2): 1, such as can
To be 0.08:1,0.1:1,0.12:1,0.14:1,0.16:1,0.18:1 or 0.2:1 etc., examine as space is limited and for concise
Consider, no longer exclusive list.
According to the present invention, the temperature of step (1) described roasting is 700-850 DEG C, such as can be 700 DEG C, 730 DEG C, 750
DEG C, 780 DEG C, 800 DEG C, 830 DEG C or 850 DEG C etc., as space is limited and for concise consideration, no longer exclusive list.
According to the present invention, the time of step (1) described roasting be 0.5-2h, such as can be 0.5h, 0.8h, 1h, 1.3h,
1.5h, 1.8h or 2h etc., as space is limited and for concise consideration, no longer exclusive list.
According to the present invention, the temperature of step (2) described leaching is 85-95 DEG C, such as can be 85 DEG C, 88 DEG C, 90 DEG C, 93
DEG C or 95 DEG C etc., as space is limited and for concise consideration, no longer exclusive list.
The present invention selects to wash leached mud obtained by step (2) with hot water after leaching, and tailings, washing water are obtained after washing
It is back to containing vanadium solution.
As a preferred technical solution, the method for the invention the following steps are included:
(1) alkaline tailings is mixed with vanadium-containing material, Na content is 8-15%, V content 0.7- in neutral and alkali tailings
1.5%, the content of water is 20-30%, and the content of V is 1-2.5% in vanadium-containing material, controls the matter of alkaline tailings and vanadium-containing material
Amount is than being (0.08-0.2): 1, gained mixed material is roasted into 0.5-2h at 700-850 DEG C；
(2) roasting clinker obtained by step (1) is leached at 85-95 DEG C with water, is obtained after separation of solid and liquid molten containing vanadium
Liquid and leached mud obtain tailings after the washing of gained leached mud hot water, and washing water is back to containing in vanadium solution.
Compared with prior art, the present invention at least has the advantages that
(1) present invention realizes the recycling benefit to sodium salt in alkaline tailings in vanadium extraction on the basis of existing process for extracting vanadium
With, while the vanadium in high efficiente callback tailings in vanadium extraction, content≤0.6wt% of vanadium, the leaching rate of vanadium are reachable in tailings
85% or more, the high-efficiency cleaning for realizing vanadium utilizes, and is conducive to save the cost, obtains good economic benefit.
(2) alkaline tailings in vanadium extraction is mixed directly as raw material and vanadium-containing material and is reacted by the present invention, with traditional tail
Slag treatment technology is compared, and simple process, process is short, has apparent advantage, is suitable for industrialization promotion.
Specific embodiment
Of the invention for ease of understanding, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation
Example is only to aid in the understanding present invention, should not be regarded as a specific limitation of the invention.
Alkaline tailings in the specific embodiment of the invention is the tailings in vanadium extraction obtained after vanadium extraction in vanadium slag under alkaline condition,
Such as can be the tailings obtained after decomposing vanadium slag under normal pressure with sodium hydroxide solution vanadium extraction involved in CN102127655A, the present invention
Particular determination is not done to its specific source.
Present invention selection carries out mixed material calcining in Muffle furnace, but it is non-be only limitted to this, this field other conventional forge
It burns device and is equally applicable to the present invention.
Separation of solid and liquid after preferably being leached by the way of filtering in the specific embodiment of the invention, but non-be only limitted to
This, the operation of separation of solid and liquid commonly used in the art is suitable for the present invention.
The following are typical but non-limiting specific embodiments of the invention:
Embodiment 1
(1) ingredient: by alkaline tailings (Na 10%, V 0.8%, moisture content 25%) and vanadium-containing material (V 1.5%)
It is uniformly mixed by the mass ratio of 0.1:1, obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 1.5h under conditions of 820 DEG C, obtain roasting clinker；
(3) it leaches: 85 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 80 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
It after testing, is 0.55wt% containing vanadium in gained tailings in vanadium extraction, the leaching rate of vanadium is 88.7%.
Embodiment 2
(1) ingredient: by alkaline tailings (Na 12%, V 0.9%, moisture content 22%) and vanadium-containing material (V 1.8%)
It is uniformly mixed by the mass ratio of 0.2:1, obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 1h under conditions of 800 DEG C, obtain roasting clinker；
(3) it leaches: 90 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 85 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.52wt% containing vanadium in gained tailings in vanadium extraction, the leaching rate of vanadium are 90%.
Embodiment 3
(1) ingredient: by alkaline tailings (Na 8%, V 0.75%, moisture content 20%) and vanadium-containing material (V 1.2%)
It is uniformly mixed by the mass ratio of 0.15:1, obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 0.5h under conditions of 750 DEG C, obtain roasting clinker；
(3) it leaches: 95 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 80 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.58wt% containing vanadium in tailings in vanadium extraction, the leaching rate of vanadium are 86.1%.
Embodiment 4
(1) ingredient: alkaline tailings (Na 15%, V 1%, moisture content 30%) is pressed with vanadium-containing material (V 2.2%)
The mass ratio of 0.8:1 is uniformly mixed, and obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 2h under conditions of 700 DEG C, obtain roasting clinker；
(3) it leaches: 95 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 90 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.60wt% containing vanadium in tailings in vanadium extraction, the leaching rate of vanadium are 85.2%.
Embodiment 5
(1) ingredient: alkaline tailings (Na 14%, V 1.3%, moisture content 26%) is pressed with vanadium-containing material (V 2%)
The mass ratio of 0.18:1 is uniformly mixed, and obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 1.5h under conditions of 800 DEG C, obtain roasting clinker；
(3) it leaches: 87 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 80 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
It after testing, is 0.53wt% containing vanadium in gained tailings in vanadium extraction, the leaching rate of vanadium is 89.5%.
Embodiment 6
(1) ingredient: alkaline tailings (Na 10%, V 1%, moisture content 30%) is pressed with vanadium-containing material (V 2.2%)
The mass ratio of 0.13:1 is uniformly mixed, and obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 2h under conditions of 750 DEG C, obtain roasting clinker；
(3) it leaches: 95 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 85 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.56wt% containing vanadium in gained tailings in vanadium extraction, the leaching rate of vanadium are 87.4%.
Embodiment 7
(1) ingredient: alkaline tailings (Na 9%, V 1.1%, moisture content 23%) is pressed with vanadium-containing material (V 1.8%)
The mass ratio of 0.2:1 is uniformly mixed, and obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 2h under conditions of 700 DEG C, obtain roasting clinker；
(3) it leaches: 93 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 85 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.59wt% containing vanadium in tailings in vanadium extraction, the leaching rate of vanadium are 85.8%.
Embodiment 8
(1) ingredient: by alkaline tailings (Na 15%, V 1.5%, moisture content 25%) and vanadium-containing material (V 1.9%)
It is uniformly mixed by the mass ratio of 0.08:1, obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 1.5h under conditions of 770 DEG C, obtain roasting clinker；
(3) it leaches: 90 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 90 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.55wt% containing vanadium in tailings in vanadium extraction, the leaching rate of vanadium are 88.4%.
Embodiment 9
(1) ingredient: by alkaline tailings (Na 14%, V 1.2%, moisture content 27%) and vanadium-containing material (V 2.1%)
It is uniformly mixed by the mass ratio of 0.15:1, obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 1h under conditions of 800 DEG C, obtain roasting clinker；
(3) it leaches: 87 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 85 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
It after testing, is 0.58wt% containing vanadium in gained tailings in vanadium extraction, the leaching rate of vanadium is 86.5%.
Embodiment 10
(1) ingredient: alkaline tailings (Na 13%, V 1%, moisture content 23%) is pressed with vanadium-containing material (V 2.2%)
The mass ratio of 0.17:1 is uniformly mixed, and obtains mixed material；
(2) it roasts: mixed material being placed in Muffle furnace, roasts 1h under conditions of 800 DEG C, obtain roasting clinker；
(3) it leaches: 90 DEG C of hot water leachings of clinker will be roasted, obtained after filtering containing vanadium leachate；
(4) it washs: leached mud is washed with 90 DEG C of hot water, obtain tailings in vanadium extraction, gained washing water is back to be soaked containing vanadium
Out in liquid.
After testing, 0.51wt% containing vanadium in gained tailings in vanadium extraction, the leaching rate of vanadium are 91.1%.
The Applicant declares that the present invention is explained by the above embodiments detailed process equipment and process flow of the invention,
But the present invention is not limited to the above detailed process equipment and process flow, that is, it is above-mentioned detailed not mean that the present invention must rely on
Process equipment and process flow could be implemented.It should be clear to those skilled in the art, any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within of the invention
Within protection scope and the open scope.
Claims (10)
1. a kind of method using alkaline tailings depth vanadium extraction, which is characterized in that the method uses following steps:
(1) alkaline tailings is mixed with vanadium-containing material, gained mixed material is roasted；
(2) roasting clinker obtained by step (1) is leached with water, is obtained after separation of solid and liquid containing vanadium solution and leached mud.
2. the method as described in claim 1, which is characterized in that after step (1) the alkaline tailings is vanadium extraction under alkaline condition
Obtained tailings in vanadium extraction.
3. method according to claim 1 or 2, which is characterized in that based on mass percentage, step (1) the alkaline tail
Na content is 8-15%, V content 0.7-1.5% in slag.
4. the method according to claim 1, which is characterized in that based on mass percentage, step (1) described alkali
Property tailings in water content be 20-30%.
5. method according to any of claims 1-4, which is characterized in that based on mass percentage, step (1) is described to be contained
The content of V is 1-2.5% in vanadium material.
6. the method according to claim 1 to 5, which is characterized in that step (1) the alkaline tailings and vanadium-containing material
Mass ratio be (0.08-0.2): 1.
7. as the method according to claim 1 to 6, which is characterized in that the temperature of step (1) described roasting is 700-850
℃；
Preferably, the time of step (1) described roasting is 0.5-2h.
8. the method according to claim 1 to 7, which is characterized in that the temperature of step (2) described leaching is 85-95
℃。
9. the method according to claim 1, which is characterized in that wash leached mud obtained by step (2) with hot water
After obtain tailings, washing water is back to containing in vanadium solution.
10. such as the described in any item methods of claim 1-9, which is characterized in that the described method comprises the following steps:
(1) alkaline tailings is mixed with vanadium-containing material, Na content is 8-15%, V content 0.7- in neutral and alkali tailings
1.5%, the content of water is 20-30%, and the content of V is 1-2.5% in vanadium-containing material, controls the matter of alkaline tailings and vanadium-containing material
Amount is than being (0.08-0.2): 1, gained mixed material is roasted into 0.5-2h at 700-850 DEG C；
(2) roasting clinker obtained by step (1) is leached at 85-95 DEG C with water, obtain after separation of solid and liquid containing vanadium solution and
Leached mud obtains tailings after the washing of gained leached mud hot water, and washing water is back to containing in vanadium solution.
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| CN110499425A (en) * | 2019-09-25 | 2019-11-26 | 河钢股份有限公司承德分公司 | A method of recycling vanadium and sodium from tailings |
| CN110512097A (en) * | 2019-09-25 | 2019-11-29 | 河钢股份有限公司承德分公司 | A method of improving the conversion ratio of sodium roasting process Vanadium in Vanadium Residue |
| CN110652928A (en) * | 2019-11-01 | 2020-01-07 | 河钢股份有限公司承德分公司 | Method and device for mixing alkaline vanadium-containing material and vanadium-containing clinker |
| CN110747301A (en) * | 2019-11-05 | 2020-02-04 | 河钢股份有限公司承德分公司 | Method for resource utilization of tailings generated in vanadium extraction of alkali metals |
| CN111118290A (en) * | 2019-11-27 | 2020-05-08 | 河钢股份有限公司承德分公司 | Method for recovering vanadium-containing substances in vanadium mud |
| CN111118290B (en) * | 2019-11-27 | 2022-01-25 | 河钢股份有限公司承德分公司 | Method for recovering vanadium-containing substances in vanadium mud |
| CN113981208A (en) * | 2021-10-13 | 2022-01-28 | 河钢承德钒钛新材料有限公司 | Roasting method of secondary slag |
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