CN106399684A - Solid-liquid separation method of leaching pulp of vanadium extraction from stone coal - Google Patents
Solid-liquid separation method of leaching pulp of vanadium extraction from stone coal Download PDFInfo
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- CN106399684A CN106399684A CN201610837362.5A CN201610837362A CN106399684A CN 106399684 A CN106399684 A CN 106399684A CN 201610837362 A CN201610837362 A CN 201610837362A CN 106399684 A CN106399684 A CN 106399684A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
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- 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
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- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a solid-liquid separation method of a leaching pulp of vanadium extraction from stone coal. The technical scheme is that the leaching pulp of which the mass concentration is 10 to 50% is fed into a first hydrocyclone to be subjected to first-stage separation, and a leaching liquid and first-stage sand are obtained; the leaching liquid directly enters the pH regulating process; the first-stage sand and washing water are mixed till the mass concentration is 20 to 50%, a mixture is fed into a second hydrocyclone to be subjected to second-stage separation, and second-stage overflow and second-stage sand are obtained; the second-stage overflow returns to the leaching process; then, the second-stage sand and raffinate are mixed till the mass concentration is 30 to 50%, a mixture is fed into a third hydrocyclone to be subjected to third-stage separation, and third-stage overflow and third-stage sand are obtained; and the third-stage overflow returns to the washing water. The solid-liquid separation method has the characteristics that the continuous productivity is high, the solid-liquid separation effect is good, the technology is simple, the vanadium recovery rate is high, and the method is environment-friendly.
Description
Technical field
The invention belongs to extracting vanadium from stone coal technical field.Specifically related to a kind of extracting vanadium from stone coal leaches the separation of solid and liquid side of ore pulp
Method.
Background technology
Bone coal be China a kind of important containing vanadium resource.Due to vanadium generally with isomorph form preservation in manosil AS salt mine
In thing, and grade is relatively low, in order to reach more than 80% leaching rate, needs to adopt concentrated acid or strong acid to leach at high temperature, with
When, grinding particle size reaches -74 μm and accounts for 70% ~ 80% so that leaching that pulp viscosity is big, fine size and vanadium easily lose, to separation of solid and liquid
Bring certain difficulty.
Conventionally employed concentrator carries out natural subsidence and realizes extracted liquid separating with leached mud to leaching ore pulp." a kind of
Neutralization of lime milk acid dipping-extraction vanadium extraction technology "（CN101580902A）Patented technology, by the leaching to extracting vanadium from stone coal for the concentrator
Go out ore pulp carry out Pyatyi dense and washing separate, separate after concentration be 40% underflow ore pulp through in milk of lime and after deliver to mine tailing
Storehouse is although reached good separating effect, but there is a problem of that long processing period and occupation area of equipment are big.
Conventional band filter good leak tightness, filter pressure are high and to ore pulp strong adaptability, are widely used at present,
But the filter cloth of band filter blocks, and has a strong impact on operating efficiency and the filter effect of band filter, increases in subparticle
When particularly evident, and subparticle easy winding vanadium, cause the loss of vanadium, need the flushing of a large amount of water, dilute leachate
Concentration.
Danger green grass or young crops etc. (danger green grass or young crops etc. Shaanxi Five continents mining industry extracting vanadium from stone coal consumption reduction emission-reducing process research [J] metal mine, 2014
(8)：69 ~ 73) carried out and leached spent acid with the laboratory test of leachate Returning utilization and commerical test, first used to leaching ore pulp
Hydrocyclone is classified, and the vanadium concentration in overflow directly returns leaching when being less than 18g/L, adjusts more than entering pH during 18g/L
Section operation, sand setting enters concentrator, and the supernatant obtaining is directly entered pH and adjusts operation, enters Tailings Dam after mine tailing is neutralized.This
Technique takes the method that cyclone and concentrator are used in combination to carry out reuse to leachate spent acid, has significant consumption reduction to reduce discharging effect
Really.But technique is loaded down with trivial details, and in leachate, vanadium concentration is higher, easily causes the loss of vanadium during with concentrator separation of solid and liquid, and
To environmental danger.
In sum, processing that viscosity is big and during the leaching ore pulp of fine size, existing process exist separation of solid and liquid difficulty greatly,
Technique is loaded down with trivial details, the shortcoming of vanadium easily loss.
Content of the invention
It is contemplated that overcoming the deficiencies in the prior art it is therefore an objective to provide a kind of good effect of separating solid from liquid, process is simple, vanadium
The high and eco-friendly extracting vanadium from stone coal of the rate of recovery leaches the solid-liquid separating method of ore pulp.
For achieving the above object, the comprising the concrete steps that of the technical solution used in the present invention：
Step one, one-level separate
To leach ore pulp with 0.2 ~ 1.0MPa pressure feed the first hydrocyclone carry out one-level separate, obtain leachate and one-level
Sand setting；Described leachate is directly entered pH and adjusts operation.
Step 2, the second-order separation
It is 20 ~ 50% that described one-level sand setting is mixed with wash water to mass concentration, obtains mixed slurry I, then by mixed slurry I
Second hydrocyclone is fed with 0.2 ~ 1.0MPa pressure and carries out the second-order separation, obtain two grades of overflows and two grades of sand settings；Described two
Level overflow returns leaches operation.
Step 3, three-level separate
It is 30 ~ 50% that described two grades of sand settings are mixed with raffinate to mass concentration, obtains mixed slurry II, then by mixing slurry
Material II feeds the 3rd hydrocyclone with 0.2 ~ 1.0MPa pressure and carries out three-level separation, obtains three-level overflow and three-level sand setting；Institute
State the described wash water of three-level overflow return to step two.
The described mass concentration leaching ore pulp is 10 ~ 50%.
The concentration of solid particles of described leachate is less than 80g/L.
The concentration of solid particles of described two grades of overflows is less than 100g/L.
The concentration of solid particles of described three-level overflow is less than 150g/L.
Due to adopting technique scheme, the present invention compared with prior art has following good effect：
（1）The present invention carries out one-level clarification using the series connection of three-level hydrocyclone and reuse raffinate two-stage washs the side of sand setting
Method carries out separation of solid and liquid to leaching ore pulp, overcomes prior art separation of solid and liquid time length, the susceptible to plugging shortcoming of equipment, leaches ore deposit
Residence time is short in a device for slurry, mixed slurry I and mixed slurry II, disposal ability is big, has process is simple, separating effect
Feature good and that continuous production is strong.
（2）The present invention adopts three-level hydrocyclone tandem process, leaches ore pulp and directly obtains leaching through one-level separation
Liquid, the vanadium of two obtaining after the second-order separation separates with three-level grade sand setting and the winding of three-level sand setting institute is washed out and finally returns
Return and leach, vanadium loss late is less than 2%, has the characteristics that vanadium recovery is high.
（3）The present invention using the follow-up acid waste water producing washing sand setting and finally returns that leaching, reduces leaching link
The consumption of acid, it is achieved that recycling of waste water, has eco-friendly feature.
Therefore, the present invention has that continuous production is strong, good effect of separating solid from liquid, process is simple, vanadium recovery are high and environment
Friendly feature.
Specific embodiment
With reference to specific embodiment, the invention will be further described, not the restriction to its protection domain.
In this specific embodiment：The concentration of solid particles of described leachate is less than 80g/L；The solid of described two grades of overflows
Granule density is less than 100g/L；The concentration of solid particles of described three-level overflow is less than 150g/L.Repeat no more in embodiment.
Embodiment 1
A kind of extracting vanadium from stone coal leaches the solid-liquid separating method of ore pulp.The comprising the concrete steps that of solid-liquid separating method described in the present embodiment：
Step one, one-level separate
To leach ore pulp with 0.2 ~ 0.6MPa pressure feed the first hydrocyclone carry out one-level separate, obtain leachate and one-level
Sand setting；Described leachate is directly entered pH and adjusts operation.
Step 2, the second-order separation
It is 20 ~ 40% that described one-level sand setting is mixed with wash water to mass concentration, obtains mixed slurry I, then by mixed slurry I
Second hydrocyclone is fed with 0.2 ~ 0.6MPa pressure and carries out the second-order separation, obtain two grades of overflows and two grades of sand settings；Described two
Level overflow returns leaches operation.
Step 3, three-level separate
It is 30 ~ 40% that described two grades of sand settings are mixed with raffinate to mass concentration, obtains mixed slurry II, then by mixing slurry
Material II feeds the 3rd hydrocyclone with 0.2 ~ 0.6MPa pressure and carries out three-level separation, obtains three-level overflow and three-level sand setting；Institute
State the described wash water of three-level overflow return to step two.
In the present embodiment：Described leaching pulp density is 10 ~ 30%；Vanadium loss late is only 0.5 ~ 2%.
Embodiment 2
A kind of extracting vanadium from stone coal leaches the solid-liquid separating method of ore pulp.The comprising the concrete steps that of solid-liquid separating method described in the present embodiment：
Step one, one-level separate
To leach ore pulp with 0.6 ~ 1.0MPa pressure feed the first hydrocyclone carry out one-level separate, obtain leachate and one-level
Sand setting；Described leachate is directly entered pH and adjusts operation.
Step 2, the second-order separation
It is 30 ~ 50% that described one-level sand setting is mixed with wash water to mass concentration, obtains mixed slurry I, then by mixed slurry I
Second hydrocyclone is fed with 0.6 ~ 1.0MPa pressure and carries out the second-order separation, obtain two grades of overflows and two grades of sand settings；Described two
Level overflow returns leaches operation.
Step 3, three-level separate
It is 40 ~ 50% that described two grades of sand settings are mixed with raffinate to mass concentration, obtains mixed slurry II, then by mixing slurry
Material II feeds the 3rd hydrocyclone with 0.6 ~ 1.0MPa pressure and carries out three-level separation, obtains three-level overflow and three-level sand setting；Institute
State the described wash water of three-level overflow return to step two.
In the present embodiment：Described leaching pulp density is 30 ~ 50%；Vanadium loss late is only 0.5 ~ 2%.
This specific embodiment compared with prior art has following good effect：
（1）This specific embodiment carries out one-level clarification and the washing of reuse raffinate two-stage using the series connection of three-level hydrocyclone
The method of sand setting carries out separation of solid and liquid to leaching ore pulp, overcomes that prior art separation of solid and liquid time length, equipment are susceptible to plugging to be lacked
Point, residence time is short in a device, disposal ability is big to leach ore pulp, mixed slurry I and mixed slurry II, has technique letter
Single, good separating effect and the strong feature of continuous production.
（2）This specific embodiment adopts three-level hydrocyclone tandem process, leaches ore pulp and separates directly through one-level
Obtain leachate, the vanadium of two obtaining after the second-order separation separates with three-level grade sand setting and the winding of three-level sand setting institute is washed out
And finally returning that leaching, vanadium loss late is less than 2%, has the characteristics that vanadium recovery is high.
（3）This specific embodiment using the follow-up acid waste water producing washing sand setting and finally returns that leaching, reduces
The consumption leaching link acid, it is achieved that recycling of waste water, has eco-friendly feature.
Therefore, this specific embodiment has that continuous production is strong, good effect of separating solid from liquid, process is simple, vanadium recovery
High and eco-friendly feature.
Claims (5)
1. a kind of extracting vanadium from stone coal leaches the solid-liquid separating method of ore pulp it is characterised in that the concrete steps of described solid-liquid separating method
It is：
Step one, one-level separate
To leach ore pulp with 0.2 ~ 1.0MPa pressure feed the first hydrocyclone carry out one-level separate, obtain leachate and one-level
Sand setting；Described leachate is directly entered pH and adjusts operation；
Step 2, the second-order separation
It is 20 ~ 50% that described one-level sand setting is mixed with wash water to mass concentration, obtains mixed slurry I, then by mixed slurry I
Second hydrocyclone is fed with 0.2 ~ 1.0MPa pressure and carries out the second-order separation, obtain two grades of overflows and two grades of sand settings；Described two
Level overflow returns leaches operation；
Step 3, three-level separate
It is 30 ~ 50% that described two grades of sand settings are mixed with raffinate to mass concentration, obtains mixed slurry II, then by mixing slurry
Material II feeds the 3rd hydrocyclone with 0.2 ~ 1.0MPa pressure and carries out three-level separation, obtains three-level overflow and three-level sand setting；Institute
State the described wash water of three-level overflow return to step two.
2. extracting vanadium from stone coal according to claim 1 leaches the solid-liquid separating method of ore pulp it is characterised in that described leaching ore deposit
The mass concentration of slurry is 10 ~ 50%.
3. extracting vanadium from stone coal according to claim 1 leaches the solid-liquid separating method of ore pulp it is characterised in that described leachate
Concentration of solid particles be less than 80g/L.
4. extracting vanadium from stone coal according to claim 1 leaches the solid-liquid separating method of ore pulp it is characterised in that described two grades overflow
The concentration of solid particles of stream is less than 100g/L.
5. extracting vanadium from stone coal according to claim 1 leaches the solid-liquid separating method of ore pulp it is characterised in that described three-level is overflow
The concentration of solid particles of stream is less than 150g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837362.5A CN106399684A (en) | 2016-09-21 | 2016-09-21 | Solid-liquid separation method of leaching pulp of vanadium extraction from stone coal |
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| CN201610837362.5A CN106399684A (en) | 2016-09-21 | 2016-09-21 | Solid-liquid separation method of leaching pulp of vanadium extraction from stone coal |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10237562A (en) * | 1997-02-20 | 1998-09-08 | Taiyo Koukou Kk | Recovery of vanadium |
| CN101054630A (en) * | 2007-05-28 | 2007-10-17 | 德物华经济信息研究院有限公司 | Integrated treatment method for the three wastes generated form method of extracting vanadium pentoxide from stone-like coal navajoite |
| CN101481755A (en) * | 2009-02-17 | 2009-07-15 | 昆明理工大学 | Method for leaching vanadium from vanadium-containing coal mine |
| CN101760650A (en) * | 2010-02-05 | 2010-06-30 | 广州有色金属研究院 | Method for leaching vanadium in vanadium-containing stone coal by wet process |
| CN101775506A (en) * | 2010-02-09 | 2010-07-14 | 广州有色金属研究院 | Leaching method of vanadium in vanadium-containing stone coal |
| CN102251103A (en) * | 2011-05-27 | 2011-11-23 | 保靖天瑞钒业有限公司 | Circulating graded leaching method of stone coal acid-leaching vanadium extraction sulfuric acid |
| CN102787238A (en) * | 2012-07-27 | 2012-11-21 | 武汉科技大学 | Recycling method of raffinate during vanadium extraction from stone coal |
| CN103789560A (en) * | 2014-01-23 | 2014-05-14 | 中南大学 | Method for extracting vanadium from stone coal pickle liquor |
| CN104532017A (en) * | 2014-12-22 | 2015-04-22 | 武汉科技大学 | Method for leaching and extracting vanadium from vanadium-containing stone coal |
| CN104789762A (en) * | 2015-05-06 | 2015-07-22 | 武汉科技大学 | Method for extracting V2O5 and KAl(SO4)2.12H2O from mica-type stone coal |
-
2016
- 2016-09-21 CN CN201610837362.5A patent/CN106399684A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10237562A (en) * | 1997-02-20 | 1998-09-08 | Taiyo Koukou Kk | Recovery of vanadium |
| CN101054630A (en) * | 2007-05-28 | 2007-10-17 | 德物华经济信息研究院有限公司 | Integrated treatment method for the three wastes generated form method of extracting vanadium pentoxide from stone-like coal navajoite |
| CN101481755A (en) * | 2009-02-17 | 2009-07-15 | 昆明理工大学 | Method for leaching vanadium from vanadium-containing coal mine |
| CN101760650A (en) * | 2010-02-05 | 2010-06-30 | 广州有色金属研究院 | Method for leaching vanadium in vanadium-containing stone coal by wet process |
| CN101775506A (en) * | 2010-02-09 | 2010-07-14 | 广州有色金属研究院 | Leaching method of vanadium in vanadium-containing stone coal |
| CN102251103A (en) * | 2011-05-27 | 2011-11-23 | 保靖天瑞钒业有限公司 | Circulating graded leaching method of stone coal acid-leaching vanadium extraction sulfuric acid |
| CN102787238A (en) * | 2012-07-27 | 2012-11-21 | 武汉科技大学 | Recycling method of raffinate during vanadium extraction from stone coal |
| CN103789560A (en) * | 2014-01-23 | 2014-05-14 | 中南大学 | Method for extracting vanadium from stone coal pickle liquor |
| CN104532017A (en) * | 2014-12-22 | 2015-04-22 | 武汉科技大学 | Method for leaching and extracting vanadium from vanadium-containing stone coal |
| CN104789762A (en) * | 2015-05-06 | 2015-07-22 | 武汉科技大学 | Method for extracting V2O5 and KAl(SO4)2.12H2O from mica-type stone coal |
Non-Patent Citations (1)
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Application publication date: 20170215 |