CN101892380A - Method for preparing vanadium pentoxide and roasting additive used therein - Google Patents
Method for preparing vanadium pentoxide and roasting additive used therein Download PDFInfo
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- CN101892380A CN101892380A CN2010102159993A CN201010215999A CN101892380A CN 101892380 A CN101892380 A CN 101892380A CN 2010102159993 A CN2010102159993 A CN 2010102159993A CN 201010215999 A CN201010215999 A CN 201010215999A CN 101892380 A CN101892380 A CN 101892380A
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- barium
- roasting
- scherbinaite
- coal
- vanadium pentoxide
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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 discloses a method for preparing vanadium pentoxide and a roasting additive used therein, and belongs to the technical field of the roasting process of rare non-ferrous metals. The method comprises a step of recovering vanadium by leaching cinder, wherein the cinder is prepared by the following steps of: (1) mixing 20 to 50 percent of vanadium-containing stone-like coal and 80 to 50 percent of vanadium ore to obtain mineral aggregate; and (2) mixing the roasting additive and the mineral aggregate, feeding the mixture into a kiln and roasting the mixture for 6 to 72 hours at the temperature of between 700 and 1,050 DEG C to obtain the cinder, wherein the roasting additive comprises barium compound, metal barium powder or barium solvent in an amount which accounts for 0.5 to 2 percent of the mass of the vanadium-containing stone-like coal. The preparation method using the roasting additive of the invention has the advantages of wide temperature range of the roasting furnace, high conversion ratio, no pollution, obvious cost reduction and the like.
Description
Technical field
The present invention relates to rare non-ferrous metal sinter process process technology field, concrete relate to a kind of method of Vanadium Pentoxide in FLAKES and roasting additive that is adopted thereof of preparing.
Background technology
The additive that contains traditional sinter process of scherbinaite coal extraction Vanadium Pentoxide in FLAKES is measured 10.15% sodium-chlor for adding the ore deposit, because sodium-chlor decomposites chlorine and hydrogen chloride gas in high-temperature calcination process, baking flue gas is seriously polluted, and the rate of recovery is low, the production cost height, superseded fully at present.The existing roasting additive that contains scherbinaite coal extraction Vanadium Pentoxide in FLAKES mainly contains following several:
1, adding 4% yellow soda ash with the sodium-chlor of 0.5-2% is composite additive, go into flat kiln roasting, this technology water logging adds the water logging slag acidleach rate of recovery and can reach more than 70%, ten thousand yuan of one ton of smart vanadium of the about 6-7 of production cost, the shortcoming of this technology is that baking flue gas is difficult to reach discharging standards, process water can not recycle, and needs certain hour discharging at interval a part of to guarantee that technology is unimpeded.
2, with 2% yellow soda ash be additive be equipped with commercial lime or dry powder or single be the additive calcification baking with commercial lime or dry powder, this technology disposal of three wastes very easily, baking flue gas is lower than discharging standards, and this technology rate of recovery can be more than 70%, ten thousand yuan of the smart vanadium production cost 6-7 of ton.But this technology exists following shortcoming: A, furnace temperature requires at 750-850 ℃, and furnace temperature is strict, and the furnace temperature scope is narrow and small, is difficult to control, the productive capacity instability, and the industrial production peak rate of conversion can reach 90%, and low has only 50%; B, sulfuric acid consumption are big, and smart vanadium per ton needs 15-20 ton sulfuric acid, production cost height; C, when add be lime carbonate or calcium hydroxide the time, in roasting process, can effectively consolidate sulphur, but calcium sulfate can be fused in the acidic solution, subsequent technique to vanadium extraction is totally unfavorable, the one, calcium ion can be deposited on the resin filling resin voids and cause adsorption effect poor, the 2nd, calcium sulfate precipitablely causes the quantity of slag when transferring alkali big and consume sulfuric acid when pH value 2.5.
3, blank oxidizing roasting sulfuric acid to leach process for extracting vanadium, this technology baking flue gas is difficult to up to standard, to the bad adaptability of ore.
Summary of the invention
The objective of the invention is in order to solve above-mentioned problems of the prior art, propose a kind of new method for preparing Vanadium Pentoxide in FLAKES and the roasting additive of employing.Adopt the technology roasting furnace temperature scope of this roasting additive wide, the transformation efficiency height, pollution-free, and cost significantly reduces.
Technical scheme of the present invention is as follows:
A kind of method for preparing Vanadium Pentoxide in FLAKES comprises that burning the slag leaching reclaims the vanadium step, and wherein said burning slag is to make by following step:
(1), take by weighing mineral aggregate, described mineral aggregate is that 20%～50% the navajoite stone that contains scherbinaite coal and 80%～50% is formed by mass percent;
(2), roasting additive and mineral aggregate are mixed into the cellar for storing things, 700～1050 ℃ roasting temperature 6～72 hours obtains burning slag; Wherein said roasting additive comprises compound or barium metal powder or the barium solvent that accounts for the barium that contains scherbinaite ature of coal amount 0.5～2%.
The method for preparing Vanadium Pentoxide in FLAKES described in the technique scheme, the compound of wherein said barium is one or more the mixing that is selected from bariumchloride, barium carbonate, barium sulfate, barium oxide, barium peroxide, nitrate of baryta or the barium oxide, when multiple mixing be arbitrarily than.
The method for preparing Vanadium Pentoxide in FLAKES described in the technique scheme, wherein the roasting additive in the step (2) also comprises and accounts for yellow soda ash or the lime that contains scherbinaite ature of coal amount 1～2%.
The method for preparing Vanadium Pentoxide in FLAKES described in the technique scheme, wherein the roasting additive in the step (2) also comprises and accounts for the yellow soda ash that contains scherbinaite ature of coal amount 1～2% and 1～2% lime.
Press such scheme, the mode that described roasting additive and mineral aggregate are mixed into the cellar for storing things roasting is with the compound of barium or barium metal powder or barium fluxing agent and contains the scherbinaite coal and go into flat kiln, shaft kiln roasting, rotary kiln or rotary kiln baking with block, granular or powdery balling-up.
Press such scheme, the mode that described roasting additive and mineral aggregate are mixed into the cellar for storing things roasting is with the compound of barium or barium metal powder or barium fluxing agent and contains the scherbinaite coal and go into rotary kiln or rotary kiln baking with block, granular or powdery.
Press such scheme, the leaching mode that the vanadium step is reclaimed in the leaching of described burning slag be with water, dilute soda solution or dilution heat of sulfuric acid be that the leaching agent pond is soaked, dump leaching or stir leaching.
Press such scheme, described dilution heat of sulfuric acid concentration is 1-2%, the mass percent meter.
The roasting additive that method adopted for preparing Vanadium Pentoxide in FLAKES described in above-mentioned arbitrary technical scheme, wherein, described roasting additive comprises compound or barium metal powder or the barium solvent that accounts for the barium that contains scherbinaite ature of coal amount 0.5～2%.
Roasting additive described in the technique scheme, wherein, the compound of described barium is one or more the mixing that is selected from bariumchloride, barium carbonate, barium sulfate, barium oxide, barium peroxide, nitrate of baryta or the barium oxide.
Roasting additive described in the technique scheme, wherein, roasting additive also comprises and accounts for yellow soda ash or the lime that contains scherbinaite ature of coal amount 1～2%.
Roasting additive described in the technique scheme, wherein, roasting additive also comprises and accounts for the yellow soda ash that contains scherbinaite ature of coal amount 1～2% and 1～2% lime.
The technology that vanadium is reclaimed in burning slag leaching among the present invention can adopt technology known in the art to operate.
The mechanism of action of the present invention, only give an example with BaCO3:
Contain the scherbinaite coal in roasting process, when maturing temperature reached kindling temperature 366-437 ℃ of pyrite (the main form that exists of sulphur in the bone coal), the steam decomposition pressure of sulphur was less, and pyrite is pressed following formula and decomposed:
2FeS
2+11/2O
2＝Fe2O3+4SO2(1) 3FeS
2+8O
2＝Fe
3O
4+6SO
2(2)
Pyritous decomposition is mainly finished by (1), the reaction of (2) formula at preliminary heating zone in industrial production.
When being higher than 565 ℃, then decomposes maturing temperature by following formula:
2FeS
2＝2FeS+2S(3) S+O
2＝SO
2(4)
(1)-(4) sulfurous gas that formula generated is when having Indian red to make catalyzer, and oxidizing sulfur dioxide is sulphur trioxide (2SO
2+ O
2=2SO
3), the barium carbonate that adds in sulphur trioxide that is generated and the upper materials, yellow soda ash, lime reaction are produced barium sulfate, sodium sulfate, calcium sulfate, thereby have got the effect of solid sulphur.
SO
3+BaCO
3＝BaSO
4+CO
2↑(6) SO
3+Na
2CO
3＝Na
2SO
4+CO
2↑(7)
SO
3+Ca(OH)
2＝CaSO
4+H
2O↑(8)
When add for bariumchloride and hydrated barta the time will react by following formula:
2SO
3+2BaCL
2+O
2＝2BaSO
4+2CL
2↑(9)
SO
3+Ba(OH)
2+O
2→BaSO
4+H
2O↑(10)
When the barium sulfate of barium sulfate that is generated or interpolation plays reduction reaction with charcoal under certain maturing temperature barium is reduced to barium metal
BaSO
4+C＝Ba+SO
2+CO
2(11)
If oxidized ore is sulfur-bearing not, interpolation be barium carbonate, maturing temperature is lower than 800 ℃, then difficulty is finished above-mentioned reaction, it is consistent with blank roasting that rate is soaked in its commentaries on classics.
Barium metal that is generated or the barium metal that directly adds are fused into liquid the infiltration in the ore and the pasc reaction that contains in vanadium illite, kaolinite, the roscoelite in the time of 724 ℃, generate low-melting silicon barium slag.AI
2(V
2) O
32SiO
2FeO2H
2O (illite)+Ba+O
2→ AI
2O
3+ BaOSiO
2+ Fe
2O
3+ H
2O (12) AI
2(V
2) O
32SiO
22H
2O (kaolinite)+Ba+O
2→ AI
2O
3+ BaOSiO
2+ H
2O (13) K
2(Na
2) AI
2O
32V
2O
36SiO
22H
2O (roscoelite)+Ba+O
2→ K
2O (Na
2O)+AI
2O
3+ BaOSiO
2+ H
2O (14)
Be that barium metal has destroyed the crystalline network that contains vanadium illite, kaolinite, roscoelite vanadium is discharged.
When what add be barium carbonate, and maturing temperature is during greater than 800 ℃, has charcoal to exist time, and barium carbonate will be decomposed into barium oxide
BaCO
3+C→BaO+CO
2↑(15)
Maturing temperature is not greater than 800 ℃ or when higher, and barium carbonate can directly be decomposed into barium oxide
BaCO
3→BaO+CO
2↑(16)
The barium oxide that is generated at high temperature also can react with the silicon in the ore and generate silicon barium slag, also can destroy and contain the vanadium illite, kaolinite, the crystalline network of roscoelite discharges vanadium, so the commentaries on classics rate of soaking of 800-1050 ℃ of maturing temperature of control will be higher than 750-800 ℃ commentaries on classics and soaks rate in the industrial production.
The silicon barium compound that is generated at high temperature further generates Si-Ba alloy with the charcoal reaction.
BaO·SiO
2+C→BaSi+CO
2(17)
The Si-Ba alloy that is generated at high temperature generates corresponding oxide compound with the oxygen reaction.
BaSi+O
2→BaO+SiO
2(18)
Barium oxide at high temperature is reduced to barium metal by charcoal and continue participates in above-mentioned reaction, and one reacts completely or temperature reduces and just stops above-mentioned reaction until charcoal.
The oxide compound of its barium generates stable inferior vanadic acid barium with the tetravalence barium oxide reaction that newly discharges:
BaO+V
2O
3→BaVO
2(19)
Inferior vanadic acid barium very easily is dissolved in dilute sulphuric acid, generates blue vanadium acyl acid
BaVO
2+H
2SO
4→BaSO
4+(VO)SO
4+H
2O(20)
The a part further oxidation of vanadium at a low price generates the high price Vanadium Pentoxide in FLAKES
V
2O
3+O
2→V
2O
5(21)
Or generate corresponding sodium metavanadate and metavanadic acid calcium with the yellow soda ash that adds and the reaction of lime.
V
2O
3+NaCO3+O
2→NaVO
3+CO
2(22)
V
2O
3+CaO+O
2→CaVO
3(23)
The above-mentioned vanadate that generates all very easily dissolves in sulfuric acid, only needs extremely low acid concentration just can leach fully, and leaching time is short, and leaching speed is fast.When taking extremely low acid concentration leaching, the dissolving of other impurity is very little.So leaching liquid is pure, acid consumption is extremely low.
When in roasting process, adding a certain amount of soda ash, because of sodium ion is much more active than barium ion, keep time enough at a certain temperature, inferior vanadic acid barium will be converted into sodium metavanadate.
BaVO
2+NaCO
3+O
2→BaCO
3+NaVO
3(24)
Thereby realized the water logging vanadium extraction
When roasting process adds a certain amount of lime in addition, most of vanadium will generate metavanadic acid calcium by the reaction of (23) formula, and available soda ash or dilute sulphuric acid leaching are reclaimed.
Beneficial effect of the present invention is:
1, the present invention contains the scherbinaite coal to 20%-50% and mixes with 80%-50% navajoite stone, extract the roasting additive and the application method thereof of Vanadium Pentoxide in FLAKES, the existing equipment of producer that extracts Vanadium Pentoxide in FLAKES need not to change and transform, only need to change additive and just can produce with ready-made installations and facilities, water logging, alkali soak or the acid leaching extraction Vanadium Pentoxide in FLAKES;
2, the present invention contains compound, barium metal powder or barium fluxing agent and the yellow soda ash etc. that the scherbinaite coal adds barium, in roasting process with ore in reaction of Salmon-Saxl generate barium sulfate, can effectively consolidate sulphur, baking flue gas is lower than discharging standards;
3, maturing temperature of the present invention is the 700-1050 degree, and the furnace temperature wide ranges is easy to control;
4, the rate height is soaked in commentaries on classics of the present invention, and the fired slags water logging rate of recovery is 50-70%, and it is 60-80% that alkali soaks the rate of recovery, and rare sulphur leaching rate of recovery can reach more than the 80-98%;
5, fired slags of the present invention adopts the required sulfuric acid concentration of acidleach only to need 1-2% (quality), and the leaching liquid foreign matter content is low, and pH value is easy to control, and the tail water dosis neutralisata is few, and tail water can be recycled, the process water zero release;
6, fired slags of the present invention is low with dilute sulphuric acid acidleach consumption, and burning slag per ton only needs 20-50kg sulfuric acid (pure) leaching speed fast, and the static leaching of normal temperature only needed can leach fully in 24 hours;
7, water logging of the present invention, alkali soak, and production cost is ten thousand yuan of/ton smart vanadium of 5-6, ten thousand yuan of/ton smart vanadium of the production cost 4-5 of acidleach.
Embodiment:
For making technical scheme of the present invention be convenient to understand, the present invention is further illustrated below in conjunction with embodiment.
Embodiment 1:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, be crushed to 80 orders, control its fixed carbon content 3.2%, add barium carbonate by containing scherbinaite colliery amount 0.8% (quality), mix, make the bead of particle diameter 15-25mm, it is gone into flat kiln 1050 degree roastings 6 hours, burn cinder grade 1.284%, (wherein with the dilute sulphuric acid of 2.0% (mass percent concentration), contain scherbinaite coal burning slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, (quality) taked the pond mode of soaking to leach to contain scherbinaite coal, leaching liquid pH value 2.5, sour molten vanadium 11.38kg/T through roasting, rate 88.62% is soaked in its commentaries on classics, leaching liquid is through the D201 resin absorption, and with the desorb of saturated sodium-chloride+5% (mass percent concentration) sodium hydroxide, stripping liquid is through purifying, add the ammonium chloride precipitation and get ammonium meta-vanadate, pyrolysis is to Vanadium Pentoxide in FLAKES.All the other extract the Vanadium Pentoxide in FLAKES step with reference to prior art.(for example, patent publication No. is CN101182596, and denomination of invention is the patent application of " a kind of method of extracting Vanadium Pentoxide in FLAKES from bone coal navajoite ".Down together)
Embodiment 2:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, be crushed to 80 orders, control its fixed carbon content 3.3%, add barium sulfate and contain scherbinaite colliery amount 1% (quality) adding yellow soda ash batch mixes by containing scherbinaite colliery amount 1% (quality), make the bead of particle diameter 15-25mm, it is gone into flat kiln 800 degree roastings 18 hours, burn cinder grade 1.205%, with the soda ash of 5% (mass percent concentration) (wherein, contain the scherbinaite coal and burnt slag and soda ash solid-to-liquid ratio 1: 1, quality) take the pond mode of soaking to leach to pass through roasting contain scherbinaite coal, the molten vanadium 9.47kg/T of alkali, rate 78.59% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 3:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, be crushed to 80 orders, control its fixed carbon content 3.4%, add barium carbonate and contain scherbinaite colliery amount 1% (quality) adding yellow soda ash batch mixes by containing scherbinaite colliery amount 1.0% (quality), make the bead of particle diameter 15-25mm, it is gone into flat kiln 900 degree roastings 12 hours, burn cinder grade 1.231%, contain the scherbinaite coal with what the dilute sulphuric acid of 1.66% (mass percent concentration) (wherein, contain the scherbinaite coal and burnt slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, quality) taked the pond mode of soaking to leach to pass through roasting, leaching liquid pH value 2.5, the molten vanadium 11.09kg/T of alkali, rate 90.09% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 4:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, the thick broken 25mm that was controlled to is sieved to and accounts for 50% less, control its fixed carbon content 6.5-7.0%, add barium carbonate and contain scherbinaite colliery amount 1% (quality) adding yellow soda ash batch mixes by containing scherbinaite colliery amount 1.0% (quality), it is gone into rotary kiln 800 degree roastings 12 hours, burn cinder grade 1.222%, with the dilute sulphuric acid of 1.66% (mass percent concentration) (wherein, contain scherbinaite coal burning slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, quality) takes the mode of dump leaching spray to leach and contain the scherbinaite coal through roasting, leaching liquid pH value 2.5, the molten vanadium 11.00kg/T of acid, rate 90.01% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 5:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, the thick broken 25mm that was controlled to is sieved to and accounts for 50% less, control its fixed carbon content 6.5-7.0%, add nitrate of baryta by containing scherbinaite colliery amount 1.8% (quality), mix, it is gone into rotary kiln 700 degree roastings 28 hours, burn cinder grade 1.284%, with the dilute sulphuric acid of 1.66% (mass percent concentration) (wherein, contain the scherbinaite coal and burnt slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, quality) take the pond mode of soaking to leach to pass through roasting contain scherbinaite coal, sour molten vanadium 11.55kg/T, rate 90.0% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 6:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, the thick broken 25mm that was controlled to is sieved to and accounts for 50% less, control its fixed carbon content 6.5-7.0%, add barium sulfate by containing scherbinaite colliery amount 1.8% (quality), containing scherbinaite colliery amount 1.8% (quality) adds yellow soda ash and contains the lime batch mixes that the scherbinaite coal adds ore deposit amount 1.8% (quality), balling-up, it is gone into flat kiln 800 degree roastings 12 hours, burn cinder grade 1.205%, with the soda ash of 5% (mass percent concentration) (wherein, contain scherbinaite coal burning slag and soda ash solid-to-liquid ratio 1: 1, quality) takes the pond mode of soaking to leach and contain the scherbinaite coal through roasting, the molten vanadium 9.47kg/T of alkali, rate 78.59% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 7:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, be crushed to 80 orders, control its fixed carbon content 3.4%, add barium fluxing agent by containing scherbinaite colliery amount 1% (quality), mix, make the bead of particle diameter 15-25mm, it is gone into flat kiln 800 degree roastings 48 hours, burn cinder grade 1.211%, (wherein with the dilute sulphuric acid of 1.36% (mass percent concentration), contain scherbinaite coal burning slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, quality) takes the mode of dump leaching spray to leach and contain scherbinaite coal, leaching liquid pH value 2.5, sour molten vanadium 11.29kg/T through roasting, rate 93.23% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 8:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, the thick broken 25mm that was controlled to is sieved to and accounts for 50% less, control its fixed carbon content 6.5-7.0%, add barium carbonate and contain scherbinaite colliery amount 1% (quality) adding yellow soda ash batch mixes by containing scherbinaite colliery amount 1% (quality), it is gone into rotary kiln 800 degree roastings 72 hours, burn cinder grade 1.225%, with the dilute sulphuric acid of 1.36% (mass percent concentration) (wherein, contain scherbinaite coal burning slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, quality) takes the mode of dump leaching spray to leach and contain the scherbinaite coal through roasting, leaching liquid pH value 2.5, the molten vanadium 10.50kg/T of acid, rate 85.71% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 9:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, be crushed to 80 orders, control its fixed carbon content 3.3%, by containing the mixture that scherbinaite colliery amount 1% (quality) adds barium sulfate and barium carbonate, and contain scherbinaite colliery amount 1% (quality) and add the yellow soda ash batch mixes, make the bead of particle diameter 15-25mm, it is gone into flat kiln 800 degree roastings 18 hours, burn cinder grade 1.215%, (wherein, contain scherbinaite coal burning slag and soda ash solid-to-liquid ratio 1: 1 with the soda ash of 5% (mass percent concentration), quality) takes the pond mode of soaking to leach and contain the scherbinaite coal through roasting, the molten vanadium 9.27kg/T of alkali, rate 76.29% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
Embodiment 10:
Choosing a kind of 20%-50% contains the scherbinaite coal and mixes with 80%-50% navajoite stone, be crushed to 80 orders, control its fixed carbon content 3.4%, scherbinaite colliery amount 1.0% (quality) adds barium carbonate and barytic mixture mixes by containing, make the bead of particle diameter 15-25mm, it is gone into flat kiln 900 degree roastings 12 hours, burn cinder grade 1.251%, contain the scherbinaite coal with what the dilute sulphuric acid of 1.66% (mass percent concentration) (wherein, contain the scherbinaite coal and burnt slag and dilute sulphuric acid solid-to-liquid ratio 1: 2, quality) taked the pond mode of soaking to leach to pass through roasting, leaching liquid pH value 2.5, the molten vanadium 11.10kg/T of acid, rate 88.73% is soaked in its commentaries on classics, and all the other steps are with embodiment 1.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any formal and substantial restriction, all those skilled in the art, in not breaking away from the technical solution of the present invention scope, when can utilizing the above technology contents that discloses, and a little change of making, modify the equivalent variations with differentiation, be equivalent embodiment of the present invention; Simultaneously, all foundations essence technology of the present invention all still belongs in the scope of technical scheme of the present invention change, modification and the differentiation of any equivalent variations that above embodiment did.
Claims (10)
1. a method for preparing Vanadium Pentoxide in FLAKES comprises that burning the slag leaching reclaims the vanadium step, and wherein said burning slag is to make by following step:
(1), take by weighing mineral aggregate, described mineral aggregate is that 20%～50% the navajoite stone that contains scherbinaite coal and 80%～50% is formed by mass percent;
(2), roasting additive and mineral aggregate are mixed into the cellar for storing things, 700～1050 ℃ roasting temperature 6～72 hours obtains burning slag; Described roasting additive comprises compound or barium metal powder or the barium solvent that accounts for the barium that contains scherbinaite ature of coal amount 0.5～2%.
2. the method for preparing Vanadium Pentoxide in FLAKES according to claim 1 is characterized in that: the compound of described barium is one or more the mixing that is selected from bariumchloride, barium carbonate, barium sulfate, barium oxide, barium peroxide, nitrate of baryta or the barium oxide.
3. the method for preparing Vanadium Pentoxide in FLAKES according to claim 1 and 2 is characterized in that: the roasting additive in the step (2) also comprises and accounts for the yellow soda ash that contains scherbinaite ature of coal amount 1～2% or account for the lime that contains scherbinaite ature of coal amount 1～2% or account for the yellow soda ash that contains scherbinaite ature of coal amount 1～2% and the combination of 1～2% lime.
4. the method for preparing Vanadium Pentoxide in FLAKES according to claim 3 is characterized in that: in the step (2) roasting additive and mineral aggregate be mixed into the cellar for storing things be meant with the compound of barium or barium metal powder or barium fluxing agent with contain the scherbinaite coal and go into flat kiln, shaft kiln roasting, rotary kiln or rotary kiln baking with block, granular or powdery balling-up.
5. the method for preparing Vanadium Pentoxide in FLAKES according to claim 1 and 2 is characterized in that: in the step (2) roasting additive and mineral aggregate be mixed into the cellar for storing things be meant with the compound of barium or barium metal powder or barium fluxing agent with contain the scherbinaite coal and go into flat kiln, shaft kiln roasting, rotary kiln or rotary kiln baking with block, granular or powdery balling-up.
6. the method for preparing Vanadium Pentoxide in FLAKES according to claim 1 and 2 is characterized in that: burn the slag leaching reclaim the leaching mode of vanadium step be with water, dilute soda solution or dilution heat of sulfuric acid be that leaching agent carries out that the pond is soaked, dump leaching or stir leaching.
7. the method for preparing Vanadium Pentoxide in FLAKES according to claim 6 is characterized in that: described dilution heat of sulfuric acid mass percent concentration is 1～2%.
8. the described roasting additive that method adopted for preparing Vanadium Pentoxide in FLAKES of arbitrary claim in the claim 1～7, it is characterized in that: described roasting additive comprises compound or barium metal powder or the barium solvent that accounts for the barium that contains scherbinaite ature of coal amount 0.5～2%.
9. roasting additive according to claim 8 is characterized in that: the compound of described barium is one or more the mixing that is selected from bariumchloride, barium carbonate, barium sulfate, barium oxide, barium peroxide, nitrate of baryta or the barium oxide.
10. it is characterized in that according to Claim 8 or 9 described roasting additives: roasting additive also comprises and accounts for the yellow soda ash that contains scherbinaite ature of coal amount 1～2% or account for the lime that contains scherbinaite ature of coal amount 1～2% or account for the yellow soda ash that contains scherbinaite ature of coal amount 1～2% and the combination of 1～2% lime.
Priority Applications (1)
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Cited By (8)
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| CN102766761A (en) * | 2012-08-20 | 2012-11-07 | 长沙矿冶研究院有限责任公司 | Method for extracting vanadium pentoxide from vanadium containing clay ores |
| CN104073626A (en) * | 2014-07-15 | 2014-10-01 | 花垣四方矿业有限公司 | Method for producing vanadium-bearing clinker |
| CN108707747A (en) * | 2018-05-31 | 2018-10-26 | 攀枝花恒弘球团有限公司 | The method for producing vanadium bearing slag is roasted containing vanadium raw materials |
| CN109182734A (en) * | 2018-09-14 | 2019-01-11 | 北京中凯宏德科技有限公司 | A kind of diluted acid dump leaching vanadium titano-magnetite sodium roasting vanadium-extracting tailings method for removing sodium |
| CN110029221A (en) * | 2019-05-06 | 2019-07-19 | 内乡县万鑫化冶有限公司 | A kind of intensive technique for producing vanadium pentoxide |
| CN111484078A (en) * | 2020-05-14 | 2020-08-04 | 中国科学院过程工程研究所 | Method for preparing vanadium pentoxide from vanadium-titanium magnetite |
| CN115216648A (en) * | 2022-07-22 | 2022-10-21 | 攀枝花市阳润科技有限公司 | Method for extracting vanadium from vanadium-containing tailings |
| CN116103518A (en) * | 2022-12-20 | 2023-05-12 | 东北大学 | Vanadium extraction method of vanadium slag by taking barium slag as additive |
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| CN102766761A (en) * | 2012-08-20 | 2012-11-07 | 长沙矿冶研究院有限责任公司 | Method for extracting vanadium pentoxide from vanadium containing clay ores |
| CN104073626A (en) * | 2014-07-15 | 2014-10-01 | 花垣四方矿业有限公司 | Method for producing vanadium-bearing clinker |
| CN108707747A (en) * | 2018-05-31 | 2018-10-26 | 攀枝花恒弘球团有限公司 | The method for producing vanadium bearing slag is roasted containing vanadium raw materials |
| CN109182734A (en) * | 2018-09-14 | 2019-01-11 | 北京中凯宏德科技有限公司 | A kind of diluted acid dump leaching vanadium titano-magnetite sodium roasting vanadium-extracting tailings method for removing sodium |
| CN110029221A (en) * | 2019-05-06 | 2019-07-19 | 内乡县万鑫化冶有限公司 | A kind of intensive technique for producing vanadium pentoxide |
| CN111484078A (en) * | 2020-05-14 | 2020-08-04 | 中国科学院过程工程研究所 | Method for preparing vanadium pentoxide from vanadium-titanium magnetite |
| CN111484078B (en) * | 2020-05-14 | 2021-06-08 | 中国科学院过程工程研究所 | Method for preparing vanadium pentoxide from vanadium-titanium magnetite |
| CN115216648A (en) * | 2022-07-22 | 2022-10-21 | 攀枝花市阳润科技有限公司 | Method for extracting vanadium from vanadium-containing tailings |
| CN116103518A (en) * | 2022-12-20 | 2023-05-12 | 东北大学 | Vanadium extraction method of vanadium slag by taking barium slag as additive |
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