CN106350669A - Method for leaching vanadium from high-calcium vanadium-bearing stone coal by adopting carbonization process - Google Patents
Method for leaching vanadium from high-calcium vanadium-bearing stone coal by adopting carbonization process Download PDFInfo
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- CN106350669A CN106350669A CN201610886583.1A CN201610886583A CN106350669A CN 106350669 A CN106350669 A CN 106350669A CN 201610886583 A CN201610886583 A CN 201610886583A CN 106350669 A CN106350669 A CN 106350669A
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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
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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
- C22B1/00—Preliminary treatment of ores or scrap
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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
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
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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 invention relates to a method for leaching vanadium from high-calcium vanadium-bearing stone coal by adopting a carbonization process. The method adopts the technical scheme that (1) the high-calcium vanadium-bearing stone coal and coal gangue are crushed to 150 to 325 meshes by a ball mill; (2) raw mineral powder of the high-calcium vanadium-bearing stone coal and coal gangue powder are stirred and mixed, and then concentrated sulfuric acid and an initiator solution are added; (3) a wet sand-shaped mixture is put in a carbonization chamber so as to be carbonized for 24 to 36 h at 150 to 250 DEG C and obtain carbonized slags; (4) vanadium is leached from the carbonized slags at the solid-to-liquid ratio of 1.0 to 2.0 L/Kg by adopting a two-stage process; (5) pH of a leaching solution is adjusted to 1.5 to 3.0, then low valent vanadium is oxidized into V (V) with hydrogen peroxide, and then the steps of resin adsorption, alkali elution, vanadium precipitation with ammonium chloride, calcination at 500 DEG C and the like are implemented, so that high-purity V2O5 is prepared. The method has the advantages of no need of ore calcination, no exhaust gas, simple process and easiness in large-scale production, and the vanadium leaching rate can be greatly increased.
Description
Technical field
Patent of the present invention is related to wet method vanadium extraction technology, especially a kind of side of high-calcium type Rock coal containing alum charring process Leaching Vanadium
Method.
Background technology
Vanadium is a kind of important strategic materials, with its excellent alloy property and catalytic action, is widely used in iron and steel work
The fields such as industry, national defence sophisticated technology, chemical industry and light and textile industries.The aboundresources of vanadium, widely distributed in the world, but no single
Solely it is available for the rich ore exploited, but with low-grade mode and other mineral intergrowths.The vanadium resource of China is mainly v-ti magnetite
Ore deposit and two kinds of bone coal, v in bone coal2o5Grade not high, typically between 0.2～1.2%, but Rock coal containing alum aboundresources, contain
V in bone coal2o5Reach 1.18 × 108T, accounts for national v2o5The 87% of reserves, extracts Fan Shi China vanadium money therefore from bone coal
One important directions of source exploitation.
Current extracting vanadium from stone coal technology mostly is roasting-wet-leaching vanadium extracting method, including sodium roasting-water seaoning, calcification baking-
Leaching method, compound additive roasting-leaching method, blank roasting-acid-hatching of young eggs, in addition also have directly acid-leaching vanadium-extracted method etc., due to stone
In colliery, the grade of vanadium is relatively low, chemical composition is more complicated, vanadium occurrence status have multiformity, and the bone coal of different chemical composition adopts
Method be not quite similar, various process for extracting vanadium also respectively have its pluses and minuses.For high-calcium type Rock coal containing alum, such as using traditional roasting
Burning-the acid-hatching of young eggs, can generate calcium vanadate in leaching process and lead to the extraction rate of vanadium low, in order to improve the extraction rate of vanadium, Bu Shaofa
The method that bright patent discloses flotation deliming.Published Chinese invention patent (publication number cn 103706465a,
Cn102274795a, cn103484667a, cn105032598a) propose a kind of flotation beneficiation method to process high-calcium type stone
Coal, carries out low-temperature bake decarburization-medicament flotation deliming-high-temperature roasting oxidizing lower vanadium, the technique of water logging vanadium extraction, the extraction rate of vanadium
In 65-80%.Cn102534233a discloses " process for extracting vanadium of low-grade high-calcium v-bearing steel slag " patented technology, and the method includes
Pretreatment of slag, calcium oxide roasting, carbonating leach, hydrolyze the techniques such as precipitation, but there is sintering temperature in vanadium extracting process
Height, the low unfavorable factor of V leaching rate.
In sum, at present to high-calcium type Rock coal containing alum be raw material extraction vanadium method, all carry out low-temperature bake decarburization, flotation
The processes such as deliming, high-temperature roasting, technological process length, reagent consumption are big, and flotation effect is not ideal sometimes, and the extraction rate of vanadium exists
65-80%, resource is not fully utilized.In order to find inexpensive, environmentally friendly vanadium extraction technology, the special proposition present invention.
Content of the invention
Not enough for art methods, patent of the present invention provides a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium
Method, the method, without the technique such as roasting decarburization or flotation deliming or high-temperature roasting oxidation, directly contains scherbinaite in high-calcium type
Add gangue and initiator in coal, carry out carbonization with concentrated sulphuric acid, then use the vanadium in water extraction carbonization sample.This method can be notable
Improve the leaching rate of vanadium in Rock coal containing alum, realize no roasting, technique that no waste gas produces to be preparing v2o5.
Inventive principle: the charcoal (organic) that this patent mainly uses in additive and raw ore occurs carbonization anti-with concentrated sulphuric acid
Should, discharge substantial amounts of heat, maintain 150～350 DEG C of reaction temperature, fully the Organic substance charcoal being coated on mineral surfaces
Change, and destroy the crystal structure of mineral, realize v(iv), especially v() efficient release, the acquisition of carbonization slag can be enable higher
V leaching rate, contribute to subsequent handling preparation v2o5.
For achieving the above object, the comprising the concrete steps that of the technical solution used in the present invention:.
(1) first high-calcium type Rock coal containing alum and gangue ball mill are crushed to 150～325 mesh, are respectively placed in two
Store for future use in feed bin.
(2) by the high-calcium type Rock coal containing alum in step (1) and colliery powder, by high-calcium type Rock coal containing alum original ore powder: bastard coal
Stone powder mass ratio is 1:(0.05～0.1) example, blender carries out mix and blend 20～30 min.
(3) it is initially charged concentrated sulphuric acid in the compound of step (2) gained, after stirring 30～45 min, add 0.2～5
G/l ammonium persulfate solution, the quality of addition is the 10%～15% of high-calcium type Rock coal containing alum, stirs 20～45 min, obtains damp sand shape
Mixture, handss are pinched can be agglomerating, and falling on the ground down is loose sand shape.
(4), in the boxcar that the damp sand shape mixture of gained in step (3) is delivered to by transmission belt, then push water and steam
In vapour carbonization chamber, carbonization 24～36 h under the conditions of 150～250 DEG C, obtain carbonization slag.
(5) the carbonization slag of step (4) gained is poured in stirring pool, adds water stirring for 1.0～2.0 l/kg by liquid-solid ratio,
Lower point two sections leachings of room temperature, leaching time is 0.5～3 h；Ore pulp after first paragraph leaching, after carrying out filter pressing solid-liquid separation, the
One section of leachate is directly entered liquid storage tank, and the first paragraph that second segment leachate is used for next group carbonization slag leaches, two-stage nitration leaching slag
Send to brickmaking.
(6) the first paragraph leachate obtaining step (5), is measured using Ferrous ammonium sulfate standardized titration method, must contain
Vanadium is the blue solution of 6～11g/l.With alkaline matter, first paragraph leachate is adjusted to ph 1.5～3.0, after standing 2～3h,
Carry out filter pressing, collect the crystal depositing, filtrate enters oxidation pond, add hydrogen peroxide, by Low Valent Vanadium v(iii), v (iv) is oxidized to v
(v) valency, the method that then routinely hydrometallurgy prepares vanadium, carry out d201 large pore anion resin absorption, sodium hydroxide highly basic
The steps such as eluting, ammonium chloride precipitation, 500 DEG C of roastings prepare high-purity v2o5.
V in high-calcium type Rock coal containing alum raw ore in described step (1)2o5Content is more than 0.85wt%, and cao content is more than 5.5
wt%.
In described step (1), gangue is coal mining spoil out, and carbon content is more than 11%, caloric value 1000～
1300 kilocalories.
In described step (2), high-calcium type Rock coal containing alum powder and the quality proportioning of colliery powder are 1:(0.05～0.1).
Concentrated sulphuric acid addition in described step (3), is 1 by high-calcium type Rock coal containing alum original ore powder and concentrated sulphuric acid quality proportioning:
(0.15～0.35), is added by pressing metering in sulphuric acid tank, mixing time 30～45 min.
In described step (3), initiator is ammonium persulfate solution, and the mass concentration of preparation is 0.5～5 g/l, and addition is
The 10%～15% of high-calcium type Rock coal containing alum original ore powder quality, mixing time 20～45min.Initiator helps the organic matter in breeze
Quick generation carbonization reaction.
Carry out carbonization reaction, after referring to that bone coal adds concentrated sulphuric acid and initiator, in special steam charcoal in described step (4)
Change in room and carry out carbonization；100～150 meters of described carbonization chamber length, similar to tunnel canopy, can accommodate 60～90 boxcars.High calcium
As shown in Fig. 1, boxcar slides in orbit type Rock coal containing alum carbonization pretreatment system structure with wheel.
150～250 DEG C of carbonization temperature in described step (4), time 24～36 h.
The liquid-solid ratio that in described step (5), carbonization slag leaches the ratio that adds water is 1.0～2.0 l/kg, carries out two-stage nitration under room temperature
Leaching, leaching mixing time is 0.5～3 h.
Adjust the alkaline matter of ph value in described step (6), refer to caco3, cao, naoh, na2co3, nahco3,
Ammonia, therein one or more.
In described step (6), the addition of hydrogen peroxide is 1.5～2 times of concentration containing vanadium in solution.
The beneficial effect of patent of the present invention is:.
(1) present invention using gangue that is abundant, cheap, being easy to get as improver, to improve Rock coal containing alum quick from
Heat.There is carbonization reaction after mixing with concentrated sulphuric acid due to gangue, discharge substantial amounts of heat, local temperature can be maintained in 150-
In the range of 350 DEG C.In carbonization process, the Organic substance of various mineral surfaces claddings, particularly porphyrin in high-calcium type Rock coal containing alum
Vanadium is decomposed by concentrated sulphuric acid carbonization, is conducive to sulphuric acid to penetrate into inside with mineral structure, and the metallic element in mineral, particularly
With the reaction of sulphophile element-vanadium, thus improving the extraction rate of vanadium.Through the checking of a large amount of commercial production, concentrated sulphuric acid carbonization time 24 ~
During 36h, the extraction rate of vanadium is i.e. up to 91.23 ~ 95.87%.
(2) present invention adopts the improver in bastard coal masonry carbonization reaction, enriches, is easy to get, environmental friendliness, to leaching process
No affect, in bone coal, abundant aluminium content is favorably improved the yield of side-product aluminium potassium sulfate.
(3) prepare v2o5Technique in, roasting need not be carried out to high-calcium type Rock coal containing alum, it is to avoid useless in roasting process
Gas produces.Waste gas is not produced, equipment is simple, and raw material is cheap in carbonization process.
(4) compared with the patented technology of decarburization-flotation-roasting, the vanadium extraction rate of high-calcium type Rock coal containing alum greatly improves, can
To reach 91.23 ~ 95.87%.Leachate subsequent production technique, prepares v according to conventional wet lay metallurgical technology2o5Method, just may be used
To obtain more than 99.5% vanadic anhydride product.Achieve pollution-free, the environmentally friendly preparation v of extracting vanadium from stone coal2o5.
Therefore, the present invention has the characteristics that vanadium extraction efficiency high and pollution are low.The present embodiment is after measured: the leaching rate of vanadium
Reach 91.15 ~ 95.87%.
Brief description
Fig. 1 is the process chart of the present invention.
Fig. 2 is high-calcium type Rock coal containing alum vanadium extraction carbonization chamber figure.
In figure label: 1, hydraulic feed device, 2, water vapour carbonization chamber, 3, boxcar, 4, track, 5, wheel, 6, water steams
Vapour jetting device；Boxcar slides in orbit.
Specific embodiment
Example 1.
When patent of the present invention uses, 10 tons of high-calcium type Rock coal containing alums are crushed to 325 mesh, add the gangue of 1 ton of 325 mesh
Powder, stirring mixing 30min；Then add 3.5 tons of concentrated sulphuric acids in blender from sulphuric acid tank, stir 45min；Add quality
Concentration is 1.5 tons of 5g/l ammonium persulfate solution, stirs 45min.The mixture being stirred is loaded boxcar with belt transport band
In, propulsion carbonization chamber；Spray into 300 DEG C of water vapour (pharmaceutical factory provides by side) in carbonization chamber, maintain carbonization room temperature to be 250
℃；Boxcar was released after 36 hours by carbonization, and carbonization slag is poured into stirring leaching pond, added 20 tons of water to carry out one section of leaching, pressure
Filter, it is standby that filtrate is directly entered liquid storage tank.One section of filtering residue adds 20 tons of water carry out two-stage nitration stirring leaching 3 hours, two
Section leaching liquid is used as brick-making raw material as one section of leaching liquid of next group carbonization slag, two-stage nitration leaching slag.One section of leaching liquid is blackish green
V(iv in color, predominantly leachate) color, content of vanadium be 11 g/l；Adjusting ph in leachate with 5% naoh is 1.5, then uses
5% na2co3Adjusting ph is 3.0, places three hours, after a large amount of aluminium potassium sulfate crystal separate out, carries out solid-liquid separation, in filtrate
Plus hydrogen peroxide carries out aoxidizing, solution is brown solution.Routinely hydrometallurgy is prepared the method for vanadium and is carried out for subsequent operation, and step is
Macroporous anion exchange resin adsorption of vanadium, highly basic eluting vanadium, ammonium chloride precipitation, ammonium metavanadate roasting, prepare more than 99.5%
v2o5.By raw ore and v in leaching tailings2o5The detection of content, v in stone coal mine2o5Leaching rate 95.87%.In addition, this is real
A large amount of aluminium potassium sulfate side-products are obtained in example operation.
Example 2.
80 tons of high-calcium type Rock coal containing alums are crushed to 150 mesh, add the colliery powder of 4 ton of 150 mesh, stirring mixing 20min；
Then inject 12 tons of concentrated sulphuric acids from sulphuric acid tank, stir 30 min；Adding mass concentration is 0.5g/l ammonium persulfate solution 8
Ton, stirs 20min.The mixture being stirred is loaded in boxcar, advanced carbonization chamber with belt transport band；Spray in carbonization chamber
Enter 300 DEG C of water vapour (pharmaceutical factory provides by side), maintain carbonization room temperature to be 150 DEG C；Boxcar was pushed away after 24 hours by carbonization
Go out, carbonization slag is poured into stirring leaching pond, add 80 tons of water to carry out one section of leaching, filter pressing, it is standby that filtrate is directly entered liquid storage tank.
Add 80 tons of water and carry out two-stage nitration stirring leaching 1 hour in one section of filtering residue, two-stage nitration leaching liquid is as the one of next group carbonization slag
Section leaching liquid, two-stage nitration leaching slag is used as brick-making raw material.One section of leaching liquid is blackish green, predominantly v in leachate4+Color, vanadium
Content is 6 g/l；Adjusting ph in leachate with 5% ammonia is 1.5, then uses 5% nahco3Adjusting ph is 3.0, places three hours,
After a large amount of aluminium potassium sulfate crystal separate out, filter pressing, in filtrate plus hydrogen peroxide carries out aoxidizing, solution is brown solution.Follow-up behaviour
Make routinely hydrometallurgy and prepare the method for vanadium to carry out, step is macroporous anion exchange resin adsorption of vanadium, highly basic eluting vanadium, chlorine
Change ammonium precipitation, ammonium metavanadate roasting, prepare more than 99.5% v2o5.By raw ore and v in leaching tailings2o5The ratio of content
Relatively, v in stone coal mine2o5Leaching rate 91.15%.
Example 3.
When patent of the present invention uses, 200 tons of high-calcium type Rock coal containing alums are crushed to 200 mesh, add the bastard coal of 15 ton of 250 mesh
Stone powder, stirring mixing 25min；Then inject 60 tons of concentrated sulphuric acids from sulphuric acid tank, stir 40min；Adding mass concentration is 3g/
24 tons of l Ammonium persulfate. mixed solution, stirs 30min.The mixture being stirred is loaded in boxcar, advanced with belt transport band
Carbonization chamber；Spray into 300 DEG C of water vapour (pharmaceutical factory provides by side) in carbonization chamber, maintain carbonization room temperature to be 200 DEG C；Carbonization
After 30 hours, boxcar is released, carbonization slag is poured into stirring leaching pond, add 300 tons of water to carry out one section of leaching, filter pressing, filtrate
It is directly entered liquid storage tank standby.Add 300 tons of water and carry out two-stage nitration stirring leaching 2.5 hours in one section of filtering residue, two-stage nitration leaches
Liquid is used as brick-making raw material as one section of leaching liquid of next group carbonization slag, two-stage nitration leaching slag.One section of leaching liquid is blackish green, mainly
For leaching the color of v (iv), content of vanadium is 9.8 g/l；In leachate, addition cao pressed powder (325 mesh) regulation ph is
1.8, then use 5% na2co3Adjusting ph is 3.0, places three hours, after separating out a large amount of aluminum sulfate salt, filter pressing, in filtrate plus double
Oxygen water carries out aoxidizing, solution is brown solution.Routinely hydrometallurgy is prepared the method for vanadium and is carried out for subsequent operation, and step is macropore
Anion exchange resin adsorption of vanadium, highly basic eluting vanadium, ammonium chloride precipitation, ammonium metavanadate roasting, prepare more than 99.5%
v2o5.By raw ore and v in leaching tailings2o5The detection of content, v in stone coal mine2o5Leaching rate 94.32%.
Example 4.
20 tons of high-calcium type Rock coal containing alums are crushed to 250 mesh, add the colliery powder of 1.6 ton of 250 mesh, stirring mixing
20min；Then inject 5 tons of concentrated sulphuric acids from sulphuric acid tank, stir 45min；Adding mass concentration is 3g/l ammonium persulfate solution
2.4 tons, stir 35min.The mixture being stirred is loaded in boxcar, advanced carbonization chamber with belt transport band；To carbonization chamber
In spray into 300 DEG C of water vapour (pharmaceutical factory provides by side), maintain carbonization room temperature to be 180 DEG C；By hopper after carbonization 32 hours
Car is released, and carbonization slag is poured into stirring leaching pond, adds 35 tons of water to carry out one section of leaching, filter pressing, filtrate is directly entered liquid storage tank
Standby.Add 40 tons of water and carry out two-stage nitration stirring leaching 3 hours in one section of filtering residue, two-stage nitration leaching liquid is as next group carbonization slag
One section of leaching liquid, two-stage nitration leaching slag be used as brick-making raw material.One section of leaching liquid is blackish green, v (iv) predominantly in leachate
Color, content of vanadium is 8.8 g/l；Adjusting ph in leachate with 10% ammonia is 2.0, then uses 5% na2co3Adjusting ph is 3.0, puts
Put three hours, after separating out a large amount of aluminum sulfate salt, filter pressing, in filtrate plus hydrogen peroxide carries out aoxidizing, solution is brown solution.Afterwards
The continuous method operating routinely hydrometallurgy to prepare vanadium is carried out, and step is macroporous anion exchange resin adsorption of vanadium, highly basic eluting
Vanadium, ammonium chloride precipitation, ammonium metavanadate roasting, prepare more than 99.5% v2o5.By raw ore and v in leaching tailings2o5Content
Detection, v in stone coal mine2o5Leaching rate 93.38%.
Claims (8)
1. a kind of method of high-calcium type Rock coal containing alum charring process Leaching Vanadium is it is characterised in that the comprising the concrete steps that of methods described:
(1) high-calcium type Rock coal containing alum and gangue ball mill are crushed to 150～325 mesh；(2) by high-calcium type Rock coal containing alum original ore powder with
Colliery powder is stirred mixing, and is subsequently added into concentrated sulphuric acid and initiator solution；(3) above-mentioned damp sand shape mixture is placed in carbonization
In room, carbonization 24～36 h under the conditions of 150～250 DEG C, obtain carbonization slag；(4) by carbonization slag with 1.0～2.0 l/kg solid-liquids
Ratio carries out two-phase method leaching vanadium；(5) leachate is adjusted after ph 1.5～3.0, adds hydrogen peroxide by Low Valent Vanadium v(iii), v
(iv) it is oxidized to v (v) valency, the method that then routinely hydrometallurgy prepares vanadium, carry out d201 large pore anion resin absorption, hydrogen
The steps such as sodium oxide highly basic eluting, ammonium chloride precipitation, 500 DEG C of roastings prepare high-purity v2o5.
2., in a kind of method of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1, its feature exists
In: described high-calcium type Rock coal containing alum and gangue ball mill are crushed to 150～325 mesh.
3. a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1 method it is characterised in that: institute
State the v in high-calcium type Rock coal containing alum raw ore2o5Content is more than 0.85wt%, and cao content is more than 5.5 wt%.
4. a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1 method it is characterised in that: institute
Stating gangue is coal mining spoil out, and phosphorus content is more than 11%, and caloric value is in 1000～1300 kilocalories.
5. a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1 method it is characterised in that: institute
The quality proportioning stating high-calcium type Rock coal containing alum powder with colliery powder is 1:(0.05～0.1).
6. a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1 method it is characterised in that: institute
State middle concentrated sulphuric acid addition, be 1:(0.15～0.35 by high-calcium type Rock coal containing alum original ore powder and concentrated sulphuric acid quality proportioning), by sulfur
Press metering in sour tank to add, mixing time 30～45 min.
7. a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1 method it is characterised in that: institute
Stating initiator is ammonium persulfate solution, and its mass concentration is 0.5～5 g/l, and the addition of solution is that high-calcium type Rock coal containing alum is former
The 10%～15% of powdered ore quality, mixing time 20～45min.
8. a kind of high-calcium type Rock coal containing alum charring process Leaching Vanadium according to claim 1 method it is characterised in that: institute
The damp sand shape mixture obtaining carbonization 24～36 h under the conditions of 150～250 DEG C in water vapour carbonization chamber.
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| CN201610886583.1A CN106350669B (en) | 2016-09-13 | 2016-09-13 | A kind of Rock coal containing alum water vapour charing pretreatment preparation V2O5Method |
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| CN106854701A (en) | 2017-06-16 |
| CN106350669B (en) | 2019-03-29 |
| CN106350668A (en) | 2017-01-25 |
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