CN106244803A - A kind of method of Leaching Vanadium from bone coal roasting material - Google Patents
A kind of method of Leaching Vanadium from bone coal roasting material Download PDFInfo
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- CN106244803A CN106244803A CN201610837363.XA CN201610837363A CN106244803A CN 106244803 A CN106244803 A CN 106244803A CN 201610837363 A CN201610837363 A CN 201610837363A CN 106244803 A CN106244803 A CN 106244803A
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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
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
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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
- C22B3/02—Apparatus therefor
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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
Abstract
The present invention relates to a kind of method of Leaching Vanadium from bone coal roasting material.Its technical scheme is: by bone coal roasting material fine grinding, and bone coal roasting powder fine grinding obtained mixes with water, prepares mixed ore pulp.Concentrated sulphuric acid is added mixed ore pulp, leaches under steam and stirring condition, obtain acidleach slurry.Acidleach slurry is carried out three stages acid leach: I section of leaching is to add calcium fluoride in first single-stage stirred leaching tank of I section of leaching device to leach, II section of leaching is first to leach 1～2h, in the last single-stage stirred leaching tank of II section of leaching device, add slag after adjusting again continue to leach, III section of leaching is to add aluminium removal in first single-stage stirred leaching tank of III section of leaching device to leach, and obtains whole acidleach slurry.Solid-liquid separation, obtains whole pickle liquor and leached mud；The whole pickle liquor pH value of regulation, solid-liquid separation is adjusted after slag after pickle liquor and tune.Production cost of the present invention is low and is prone to industrialization, has the high feature low with impurity ion content in leachate of V leaching rate.
Description
Technical field
The invention belongs to Rock coal containing alum technical field.It is specifically related to a kind of method of Leaching Vanadium from bone coal roasting material.
Background technology
Bone coal is that China is a kind of important containing vanadium resource, and at China's rich reserves, its carbohydrate content is higher, has certain
Calorific value, and hardness mill higher, difficult.In bone coal in addition to silicone content height, aluminum content is the highest.The old process of current extracting vanadium from stone coal
It it is roasting-leaching-purification enrichment-precipitation-calcining.The extract technology of bone coal roasting material is many based on acidic leaching, acidic leaching
Poor to the selectivity of metal, it is high that vanadium aluminum leaches dependency, and the while that therefore vanadium leaching, aluminum is also leached in a large number, causes solvent extraction
The aluminum of process extraction rate altogether is high, and the pH value of gained pickle liquor is relatively low, and sulphuric acid is not fully used, the alkaline consumption of follow-up tune pH value
Amount height so that production cost increases.
Bing Fructus Citri tangerinae etc. (Bing Fructus Citri tangerinae, Gong Sheng, Gong Zhuqing. from bone coal, extract the technical study [J] of vanadic anhydride. rare metal,
2007,31(5): 670-675) by bone coal roasting sample under conditions of liquid-solid ratio is 1ml/g and extraction temperature is 103 DEG C, with two
Secondary leachate is added a small amount of sulphuric acid and is once leached, and one time leached mud high concentrated acid secondary leaches, and total leaching rate of vanadium reaches
84%.The circulation of secondary leachate is improved acid-utilising effect by this extract technology, but owing to two-stage nitration leaching acid consumption is too high so that
PH of leaching solution is relatively low, and the total leaching rate of vanadium is the highest.
" technique that a kind of industrial viable bone coal navajoite extracts vanadic anhydride " (CN104232939A) patented technology,
This technology first by the bone coal roasting material shrend of 550 DEG C to 55 DEG C, carry out classification and primary water logging with wet grinding mill pulp grinder and grader
Take, then carry out resin in slurry processes leaching and exchange.Leaching and ion are exchanged and are combined into a step by this leaching technology, shorten stream
Journey, but equipment needed thereby is required height, resin is relatively big to resin loss in slurry processes, and is unfavorable for realizing industrialization.
" the bone coal navajoite extract technology that a kind of spent acid recycles " (CN104988337A) patented technology, this technology uses
High acidic oils-solid-liquid separation-vanadic acid separation-sour water returns the technique leached, and the vanadic acid in leachate is separated by the method, reclaims
Remaining sulphuric acid, improves the utilization rate of acid, but vanadic acid separation circuit is complex and separation efficiency is the highest, causes technological process to increase
Long, production cost improves, and in leachate, impurity ion content is high.
" the two-stage ripening extraction vanadium method of a kind of bone coal navajoite " (CN104451201A) patented technology, this technology uses high temperature
The technique of ripening-water logging-ripening at low temperature-water logging, it is possible to increase the utilization rate of acid, but ripening vanadium extraction height corrosion-resistant and resistance to equipment
Temperature requires height, and two sections of solid-liquid separation and two sections of water loggings cause flow process longer, and production cost is higher, and in gained leachate, impurity contains
Amount height.
In sum, although existing acid leaching process exists respective advantage, but still suffer from foreign ion in leachate and contain
Amount height, follow-up tune pH value alkali consumption is big and difficulty or ease realize the shortcomings such as industrialization.
Summary of the invention
It is contemplated that overcome existing acidleach technological deficiency, it is therefore an objective to provide a kind of production cost low and be prone to industrialized
The method of Leaching Vanadium from bone coal roasting material, the V leaching rate of the method is high low with impurity ion content in leachate.
For achieving the above object, the step of the technical solution used in the present invention is:
Step one, ore grinding
Bone coal roasting material is finely ground to granularity and accounts for 75～90wt% less than 74 μm, obtain bone coal roasting powder.
Step 2, size mixing
It is 800～1200L/t described bone coal roasting powder to be mixed homogeneously with water by liquid-solid ratio, prepares mixed ore pulp.
Step 3, Leaching by strong acid curing
First described mixed ore pulp is fed leaching tanks, then is 225 by the addition of concentrated sulphuric acid in described bone coal roasting powder per ton
～450L, add described concentrated sulphuric acid to described leaching tanks；Then be passed through 150～300 DEG C of steam and rotating speed be 250～
Stir 1～2h under conditions of 400r/min, obtain acidleach slurry.
Step 4, segmentation is leached
Flowing through the sequencing of leaching device according to acidleach slurry, extract technology is divided into three stages acid leach:
I section of leaching is: described acidleach slurry flows into I section of leaching device, under conditions of 90～100 DEG C and 250～400r/min, presses
The calcium fluoride addition of described bone coal roasting powder per ton is 50～70kg, stirs to first single-stage of described I section of leaching device
Mix addition calcium fluoride in leaching tanks, leach 1～3h.
II section of leaching is: the acidleach slurry leached I section flows into II section of leaching device, at 50～70 DEG C and 250～400r/
Leach 1～2h under conditions of min, then be 50～150kg by slag addition after the tune of described bone coal roasting powder per ton, to described
The last single-stage stirred leaching tank of II section of leaching device adds slag after described tune, continues to leach 0.5～0.8h.
III section of leaching be: the acidleach slurry leached II section flows into III section of leaching device, at room temperature and 100～200r/min
Under the conditions of, it is 122～180kg by the aluminium removal addition of described bone coal roasting powder per ton, to described III section of leaching device
First single-stage stirred leaching tank adds described aluminium removal, leaches 1～6h, obtain whole acidleach slurry.
Step 5, solid-liquid separation
Described whole acidleach slurry is carried out solid-liquid separation, obtains whole pickle liquor and leached mud.
Step 6, adjusts pH value
The pH value regulating described whole pickle liquor with calcium oxide or calcium hydroxide is 1.5～1.8, solid-liquid separation, acidleach after being adjusted
Slag after liquid and tune；After described tune, slag returns II section of extract technology of step 4.
Described leaching device is to be in series by I section of leaching device, II section of leaching device and III section of leaching device；Wherein: I
Section leaching device is composed in series by 2～4 single-stage stirred leaching tanks, and II section of leaching device is by 2～3 single-stage stirred leaching tank strings
Joint group becomes, and III section of leaching device is composed in series by 1～3 single-stage stirred leaching tank.
The vanadium content of described bone coal roasting material is 0.4～1.2wt%, and wherein tax is stored in the vanadium amount of mica mineral is bone coal
The 60～95wt% of the vanadium content of roasting material.
The concentration of described concentrated sulphuric acid is 90～98.3wt%.
The purity of described calcium fluoride is 90～98wt%；Granularity accounts for 60～95wt% less than 74 μm.
Described aluminium removal is more than one in potassium sulfate and ammonium sulfate.
Owing to using said method, the present invention provides the benefit that produced by compared with existing acid leaching process:
1, the present invention uses high-concentration sulfuric acid to leach bone coal roasting material, and the hydrion of high concentration promotes aluminosilicate knot in bone coal
The destruction of structure, not only contributes to reduce calcium fluoride consumption, reduces production cost low, and be conducive to improving V leaching rate.
2, the present invention carries out segmentation leaching under the conditions of different reaction temperatures, makes different reaction temperatures at leaching process
In be not fully exerted, reduce the high temperature energy consumption that tradition leaches continuously, enhance calcium fluoride to silicate sturcture in bone coal
Discomposing effect.
3, after the present invention utilizes tune, the residual oxygen calcium in slag or calcium hydroxide regulate the pH value of II section of acidleach slurry leached,
Eliminate the vanadium loss owing to adjusting pH slag absorption winding vanadium to cause, the pH value of gained of the present invention pickle liquor at end improve to 0.8～
1.2, reduce the follow-up alkali consumption adjusting whole pickle liquor pH value.
4, the present invention stirs under normal temperature environment, Temperature fall, adds aluminium removal crystallization and removes aluminum, makes vanadium extraction and fall aluminum in leaching
Go out a step in link to realize.The production cost of leaching method is low, leaching equipment simple in construction used, it is easy to accomplish industrialization.
5, using extract technology of the present invention to process bone coal roasting material, V leaching rate reaches more than 85%, and acid-utilising rate is big
In 90%.
Therefore, production cost of the present invention is low and is prone to industrialization, has foreign ion in V leaching rate height and leachate and contains
Measure low feature.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the invention will be further described, not the restriction to its protection domain.
In this detailed description of the invention:
The concentration of described concentrated sulphuric acid is 90～98.3wt%.
The purity of described calcium fluoride is 90～98wt%；Granularity accounts for 60～95wt% less than 74 μm.
Embodiment repeats no more.
Embodiment 1
A kind of method of Leaching Vanadium from bone coal roasting material.The step of method described in the present embodiment is:
Step one, ore grinding
Bone coal roasting material is finely ground to granularity and accounts for 75～81wt% less than 74 μm, obtain bone coal roasting powder.
Step 2, size mixing
It is 800～950L/t described bone coal roasting powder to be mixed homogeneously with water by liquid-solid ratio, prepares mixed ore pulp.
Step 3, Leaching by strong acid curing
First described mixed ore pulp is fed leaching tanks, then is 225 by the addition of concentrated sulphuric acid in described bone coal roasting powder per ton
～310L, add described concentrated sulphuric acid to described leaching tanks；Then be passed through 150～200 DEG C of steam and rotating speed be 250～
Stir 1～1.4h under conditions of 300r/min, obtain acidleach slurry.
Step 4, segmentation is leached
Flowing through the sequencing of leaching device according to acidleach slurry, extract technology is divided into three stages acid leach technique:
I section of leaching is: described acidleach slurry flows into I section of leaching device, under conditions of 90～94 DEG C and 250～300r/min, presses
The calcium fluoride addition of described bone coal roasting powder per ton is 50～58kg, stirs to first single-stage of described I section of leaching device
Mix addition calcium fluoride in leaching tanks, leach 1～1.7h.
II section of leaching is: the acidleach slurry leached I section flows into II section of leaching device, at 50～58 DEG C and 250～300r/
Leach 1～1.4h under conditions of min, then be 50～90kg by slag addition after the tune of described bone coal roasting powder per ton, to institute
State and the last single-stage stirred leaching tank of II section of leaching device adds slag after described tune, continue to leach 0.5～0.6h.
III section of leaching be: the acidleach slurry leached II section flows into III section of leaching device, at room temperature and 100～140r/min
Under the conditions of, it is 122～140kg by the aluminium removal addition of described bone coal roasting powder per ton, to described III section of leaching device
First single-stage stirred leaching tank adds described aluminium removal, leaches 1～3h, obtain whole acidleach slurry.
Step 5, solid-liquid separation
Described whole acidleach slurry is carried out solid-liquid separation, obtains whole pickle liquor and leached mud.
Step 6, adjusts pH value
The pH value regulating described whole pickle liquor with calcium oxide or calcium hydroxide is 1.5～1.6, solid-liquid separation, acidleach after being adjusted
Slag after liquid and tune；After described tune, slag returns II section of extract technology of step 4.
Described leaching device is to be in series by I section of leaching device, II section of leaching device and III section of leaching device；Wherein: I
Section leaching device is composed in series by 2 single-stage stirred leaching tanks, and II section of leaching device is by 2 single-stage stirred leaching tank series connection groups
Becoming, III section of leaching device is composed in series by 1 single-stage stirred leaching tank.
The vanadium content of described bone coal roasting material is 0.4～0.8wt%, and wherein tax is stored in the vanadium amount of mica mineral is bone coal
The 60～71wt% of the vanadium content of roasting material.
Described aluminium removal is potassium sulfate.
Extract technology described in the present embodiment processes bone coal roasting material: V leaching rate is 85.02 ~ 90.10%；Acid-utilising rate
More than 90 ~ 92%.
Embodiment 2
A kind of method of Leaching Vanadium from bone coal roasting material.The step of method described in the present embodiment is:
Step one, ore grinding
Bone coal roasting material is finely ground to granularity and accounts for 80～86wt% less than 74 μm, obtain bone coal roasting powder.
Step 2, size mixing
It is 940～1090L/t described bone coal roasting powder to be mixed homogeneously with water by liquid-solid ratio, prepares mixed ore pulp.
Step 3, Leaching by strong acid curing
First described mixed ore pulp is fed leaching tanks, then is 300 by the addition of concentrated sulphuric acid in described bone coal roasting powder per ton
～380L, add described concentrated sulphuric acid to described leaching tanks；Then be passed through 200～250 DEG C of steam and rotating speed be 300～
Stir 1.3～1.7h under conditions of 350r/min, obtain acidleach slurry.
Step 4, segmentation is leached
Flowing through the sequencing of leaching device according to acidleach slurry, extract technology is divided into three stages acid leach technique:
I section of leaching is: described acidleach slurry flows into I section of leaching device, under conditions of 93～97 DEG C and 300～350r/min, presses
The calcium fluoride addition of described bone coal roasting powder per ton is 57～65kg, stirs to first single-stage of described I section of leaching device
Mix addition calcium fluoride in leaching tanks, leach 1.6～2.3h.
II section of leaching is: the acidleach slurry leached I section flows into II section of leaching device, at 57～65 DEG C and 300～350r/
Leach 1.3～1.7h under conditions of min, then be 80～120kg by slag addition after the tune of described bone coal roasting powder per ton, to
The last single-stage stirred leaching tank of described II section of leaching device adds slag after described tune, continues to leach 0.6～0.7h.
III section of leaching be: the acidleach slurry leached II section flows into III section of leaching device, at room temperature and 130～170r/min
Under the conditions of, it is 130～160kg by the aluminium removal addition of described bone coal roasting powder per ton, to described III section of leaching device
First single-stage stirred leaching tank adds described aluminium removal, leaches 2～5h, obtain whole acidleach slurry.
Step 5, solid-liquid separation
Described whole acidleach slurry is carried out solid-liquid separation, obtains whole pickle liquor and leached mud.
Step 6, adjusts pH value
The pH value regulating described whole pickle liquor with calcium oxide or calcium hydroxide is 1.6～1.7, solid-liquid separation, acidleach after being adjusted
Slag after liquid and tune；After described tune, slag returns II section of extract technology of step 4.
Described leaching device is to be in series by I section of leaching device, II section of leaching device and III section of leaching device；Wherein: I
Section leaching device is composed in series by 3 single-stage stirred leaching tanks, and II section of leaching device is by 2 single-stage stirred leaching tank series connection groups
Becoming, III section of leaching device is composed in series by 2 single-stage stirred leaching tanks.
The vanadium content of described bone coal roasting material is 0.7～1.0wt%, and wherein tax is stored in the vanadium amount of mica mineral is bone coal
The 70～83wt% of the vanadium content of roasting material.
Described aluminium removal is ammonium sulfate.
Extract technology described in the present embodiment processes bone coal roasting material: V leaching rate is 89.33 ~ 94.54%；Acid-utilising rate
More than 91 ~ 93%.
Embodiment 3
A kind of method of Leaching Vanadium from bone coal roasting material.The step of method described in the present embodiment is:
Step one, ore grinding
Bone coal roasting material is finely ground to granularity and accounts for 85～90wt% less than 74 μm, obtain bone coal roasting powder.
Step 2, size mixing
It is 1080～1200L/t described bone coal roasting powder to be mixed homogeneously with water by liquid-solid ratio, prepares mixed ore pulp.
Step 3, Leaching by strong acid curing
First described mixed ore pulp is fed leaching tanks, then is 370 by the addition of concentrated sulphuric acid in described bone coal roasting powder per ton
～450L, add described concentrated sulphuric acid to described leaching tanks；Then be passed through 250～300 DEG C of steam and rotating speed be 350～
Stir 1.6～2h under conditions of 400r/min, obtain acidleach slurry.
Step 4, segmentation is leached
Flowing through the sequencing of leaching device according to acidleach slurry, extract technology is divided into three stages acid leach technique:
I section of extract technology is: described acidleach slurry flows into I section of leaching device, 96～100 DEG C and the condition of 350～400r/min
Under, it is 64～70kg by the calcium fluoride addition of described bone coal roasting powder per ton, to first list of described I section of leaching device
Level stirred leaching tank adds calcium fluoride, leaches 2.3～3h.
II section of extract technology is: by I section leach acidleach slurry flow into II section of leaching device, 64～70 DEG C and 350～
Under conditions of 400r/min leach 1.6～2h, then by slag addition after the tune of described bone coal roasting powder per ton be 110～
150kg, adds slag after described tune in the last single-stage stirred leaching tank of described II section of leaching device, continues leaching 0.7
～0.8h.
III section of extract technology is: the acidleach slurry leached II section flows into III section of leaching device, at room temperature and 160～200r/
Under conditions of min, it is 150～180kg by the aluminium removal addition of described bone coal roasting powder per ton, leaches dress to described III section
First the single-stage stirred leaching tank put adds described aluminium removal, leaches 4～6h, obtain whole acidleach slurry.
Step 5, solid-liquid separation
Described whole acidleach slurry is carried out solid-liquid separation, obtains whole pickle liquor and leached mud.
Step 6, adjusts pH value
The pH value regulating described whole pickle liquor with calcium oxide or calcium hydroxide is 1.7～1.8, solid-liquid separation, acidleach after being adjusted
Slag after liquid and tune；After described tune, slag returns II section of extract technology of step 4.
Described leaching device is to be in series by I section of leaching device, II section of leaching device and III section of leaching device；Wherein: I
Section leaching device is composed in series by 4 single-stage stirred leaching tanks, and II section of leaching device is by 3 single-stage stirred leaching tank series connection groups
Becoming, III section of leaching device is composed in series by 3 single-stage stirred leaching tanks.
The vanadium content of described bone coal roasting material is 0.9～1.2wt%, and wherein tax is stored in the vanadium amount of mica mineral is bone coal
The 82～95wt% of the vanadium content of roasting material.
Described aluminium removal is the mixture of potassium sulfate and ammonium sulfate.
Extract technology described in the present embodiment processes bone coal roasting material: V leaching rate is 93.62 ~ 98.02%；Acid-utilising rate
More than 92 ~ 95%.
This detailed description of the invention provides the benefit that produced by compared with existing acid leaching process:
1, this detailed description of the invention uses high-concentration sulfuric acid to leach bone coal roasting material, and the hydrion of high concentration promotes silicon in bone coal
The destruction of Aluminate structures, not only contributes to reduce calcium fluoride consumption, reduces production cost low, and is conducive to improving vanadium leaching
Rate.
2, this detailed description of the invention carries out segmentation leaching under the conditions of different reaction temperatures, makes different reaction temperatures exist
Leaching process is not fully exerted, reduces the high temperature energy consumption that tradition leaches continuously, improve calcium fluoride to silicic acid in bone coal
The discomposing effect of salt structure.
3, after this detailed description of the invention utilizes and adjusts, the residual oxygen calcium in slag or calcium hydroxide regulate II section of acidleach leached
The pH value of slurry, eliminates the vanadium loss owing to adjusting pH slag absorption winding vanadium to cause, the gained pickle liquor at end of this detailed description of the invention
PH value improves to 0.8～1.2, reduces the follow-up alkali consumption adjusting whole pickle liquor pH value.
4, this detailed description of the invention stirs under normal temperature environment, Temperature fall, adds aluminium removal crystallization except aluminum, make vanadium extraction and
Fall aluminum step in leaching link realizes.The production cost of leaching method is low, leaching equipment simple in construction used, it is easy to accomplish
Industrialization.
5, the extract technology described in this detailed description of the invention is used to process bone coal roasting material: V leaching rate reaches more than 85%；Acid
Utilization rate is more than 90%.
Therefore, this detailed description of the invention production cost is low and is prone to industrialization, has V leaching rate high miscellaneous with in leachate
The feature that matter ion concentration is low.
Claims (6)
1. the method for Leaching Vanadium from bone coal roasting material, it is characterised in that the step of described method is:
Step one, ore grinding
Bone coal roasting material is finely ground to granularity and accounts for 75～90wt% less than 74 μm, obtain bone coal roasting powder；
Step 2, size mixing
It is 800～1200L/t described bone coal roasting powder to be mixed homogeneously with water by liquid-solid ratio, prepares mixed ore pulp；
Step 3, Leaching by strong acid curing
First described mixed ore pulp is fed leaching tanks, then is 225 by the addition of concentrated sulphuric acid in described bone coal roasting powder per ton
～450L, add described concentrated sulphuric acid to described leaching tanks；Then be passed through 150～300 DEG C of steam and rotating speed be 250～
Stir 1～2h under conditions of 400r/min, obtain acidleach slurry；
Step 4, segmentation is leached
Flowing through the sequencing of leaching device according to acidleach slurry, extract technology is divided into three stages acid leach:
I section of leaching is: described acidleach slurry flows into I section of leaching device, under conditions of 90～100 DEG C and 250～400r/min, presses
The calcium fluoride addition of described bone coal roasting powder per ton is 50～70kg, stirs to first single-stage of described I section of leaching device
Mix addition calcium fluoride in leaching tanks, leach 1～3h；
II section of leaching be: the acidleach slurry leached I section flows into II section of leaching device, at 50～70 DEG C and 250～400r/min
Under the conditions of leach 1～2h, then be 50～150kg by slag addition after the tune of described bone coal roasting powder per ton, to described II section
The last single-stage stirred leaching tank of leaching device adds slag after described tune, continues to leach 0.5～0.8h；
III section of leaching is: the acidleach slurry leached II section flows into III section of leaching device, in room temperature and the condition of 100～200r/min
Under, it is 122～180kg by the aluminium removal addition of described bone coal roasting powder per ton, to the first of described III section of leaching device
Individual single-stage stirred leaching tank adds described aluminium removal, leaches 1～6h, obtain whole acidleach slurry；
Step 5, solid-liquid separation
Described whole acidleach slurry is carried out solid-liquid separation, obtains whole pickle liquor and leached mud；
Step 6, adjusts pH value
The pH value regulating described whole pickle liquor with calcium oxide or calcium hydroxide is 1.5～1.8, solid-liquid separation, acidleach after being adjusted
Slag after liquid and tune；After described tune, slag returns II section of extract technology of step 4.
The method of Leaching Vanadium from bone coal roasting material the most according to claim 1, it is characterised in that described leaching device is
It is in series by I section of leaching device, II section of leaching device and III section of leaching device；Wherein: I section of leaching device is by 2～4 single-stages
Stirred leaching tank is composed in series, and II section of leaching device is composed in series by 2～3 single-stage stirred leaching tanks, and III section of leaching device is by 1
～3 single-stage stirred leaching tanks are composed in series.
The method of Leaching Vanadium from bone coal roasting material the most according to claim 1, it is characterised in that described bone coal roasting material
Vanadium content be 0.4～1.2wt%, wherein compose be stored in mica mineral the vanadium content that vanadium amount is bone coal roasting material 60～
95wt%。
The method of Leaching Vanadium from bone coal roasting material the most according to claim 1, it is characterised in that described concentrated sulphuric acid dense
Degree is 90～98.3wt%.
The method of Leaching Vanadium from bone coal roasting material the most according to claim 1, it is characterised in that described calcium fluoride pure
Degree is 90～98wt%；Granularity accounts for 60～95wt% less than 74 μm.
The method of Leaching Vanadium from bone coal roasting material the most according to claim 1, it is characterised in that described aluminium removal is sulfur
Acid potassium and ammonium sulfate in more than one.
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| CN201610837363.XA CN106244803A (en) | 2016-09-21 | 2016-09-21 | A kind of method of Leaching Vanadium from bone coal roasting material |
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| CN201610837363.XA Pending CN106244803A (en) | 2016-09-21 | 2016-09-21 | A kind of method of Leaching Vanadium from bone coal roasting material |
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Application publication date: 20161221 |