CN101445271A - A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium - Google Patents
A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium Download PDFInfo
- Publication number
- CN101445271A CN101445271A CNA2009101024017A CN200910102401A CN101445271A CN 101445271 A CN101445271 A CN 101445271A CN A2009101024017 A CNA2009101024017 A CN A2009101024017A CN 200910102401 A CN200910102401 A CN 200910102401A CN 101445271 A CN101445271 A CN 101445271A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- sub
- coal
- kiln
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium, namely a method to make vanadium high temperature oxidation etherealization which includes the following steps: 1. material selection, that is selecting ore or slag that containing content of all-vanadium V<SUB>2</SUB>O<SUB>5</SUB> over 0.3% as raw material; 2. cleavage breakage, coal separation, and jevigating to get fecula in 100-200 mesh; 3. high temperature oxidation etherealization, that is control material maximum temperature inside rotary kiln above 1250 EDG C, and flue-gas temperature out of the kiln not lower than 650 EDG C; 4. kiln gas residual heat utilization and dust removing and temperature reduction, that is remove the majority of solid dust grain and lower flue-gas temperature to 150 EDG C below; 5. acid or caustic washing to collect vanadium, namely kiln gas countercurrent contact with vitriol oil or soda ash solution to generate (VO<SUB>2</SUB>)<SUB>2</SUB>SO<SUB>4</SUB> or NaVO<SUB>3</SUB> solution; 6. Purify to get the vanadium, and get qualified NH<SUB>4</SUB>VO<SUB>3</SUB> or V<SUB>2</SUB>O<SUB>5</SUB> product. The vanadium conversion rate is above 90% through the present invention, no waste water and slag muck discharged, material sufficiently circulated and utilized, discharged gas can ensured to be meet discharge standard without environment pollution; also energy consumption low, cost low and can realize factory large scale easily which can also be applied to factories producing ammonium metavanadate and vanadic oxide.
Description
Technical field
The present invention relates to the oxide compound of vanadium, furthermore, relate to the production method of Vanadium Pentoxide in FLAKES, contain navajoite stone or contain the method that vanadium slag is produced Vanadium Pentoxide in FLAKES in particular to using.
Background technology
Produce V now
2O
5Factory, " sodium method " technology of all also succeeding in developing the latter stage sixties in century in the use basically, its major defect is to contain SO in the decarburization flue gas burnt in a heap
2, SO
3With SO in the baking flue gas in the kiln
2, SO
3, HCl and Cl
2Deng strongly-acid gas and dust severe contamination problem to environment.Minority factory, is difficult to apply because transformation efficiency is low in " calcium method " technology on probation.Having developed novel procesies such as low sodium method, calcium method, sodium calcium method in recent years, but used the product output capacity of these technologies low, only is 35%～45%, and cost is all higher than traditional sodium method.
In recent years, system vanadium technology is innovated to some extent, applies for having of Chinese patent: CN86108218 number " rotary kiln bakes to burn the article vanadium slag one water logging extraction vanadium method ", CN1059885 number " a kind of novel method of extracting Vanadium Pentoxide in FLAKES from contain the scherbinaite coal ", CN101245410 number " a kind of method of roasting high calcium vanadium slag with fluidizing apparatus ", CN101012496 number " a kind of method of extracting Vanadium Pentoxide in FLAKES from bone coal ", CN101265523 number " technology of Vanadium Pentoxide in FLAKES is extracted in the roasting of stone coal ore rotary kiln calcium method " etc.These technology all are to extract Vanadium Pentoxide in FLAKES under 850 ℃ to 1050 ℃ maturing temperature, can not make its gasification, so the yield of vanadium are not high, and produce a large amount of " three wastes " contaminate environment.
Xinhua County, Hunan Mr.'s Li Jixing application for a patent for invention " stone-like coal gas phase vanadium extracting method " (number of patent application 200710035258.5) is open, and its core technology is to make vanadium in fluidizing furnace high temperature oxidation gasification vanadium extraction.Concrete is to make stone coal powder 900 ℃～1250 ℃ burnings down with oxygen-rich air in fluidizing furnace, carries out Pintsch process, V
3+Be oxidized to V
2O
5After enter furnace gas, reclaim and to make V
2O
5Product.The shortcoming of this method is: 1. used oxygen enrichment manufacturing installation and fluidizing furnace cost are higher; 2. the production energy consumption height of oxygen-rich air, cost height; 3. contain a large amount of CO in the flue gas that fluidizing furnace is discharged
2, SO
2, SO
3Deng sour gas, could realize with ammonium liquid and KOH solution absorption V after must purifying them earlier
2O
5Purpose, and KOH price height obviously can increase considerably cost; 4. the temperature of controlling in its fluidizing furnace is 900 ℃～1250 ℃; And the scherbinaite coal is the siliceous shale that contains the scherbinaite coal, the fusing point of main mineral composition wherein: 1150 ℃ in potash feldspar, and 1118 ℃ of albites, 1244 ℃ of white micas all are lower than 1250 ℃.When fire box temperature near or surpass their fusing point, slag can deliquescing, liquefaction and bonding, makes the lime-ash normally " boiling " in the burner hearth, until the obstruction blast cap and extremely stove.Really like this, then be difficult to carry out normal suitability for industrialized production.5. this invention is only applicable to contain the scherbinaite coal, contains navajoite stone or slag for other and not necessarily is suitable for.
Summary of the invention
The purpose of this invention is to provide a kind of usefulness and contain navajoite stone or contain the method that vanadium slag is produced Vanadium Pentoxide in FLAKES, overcoming the shortcoming of prior art, present method reduced investment, power consumption is low, yield is high, no waste water, waste sludge discharge, and waste gas can qualified discharge.
Usefulness provided by the invention contains navajoite stone or contains vanadium slag produces the method for Vanadium Pentoxide in FLAKES and may further comprise the steps:
The first step is selected materials
Select full content of vanadium V
2O
50.3% ore or slag be as raw material; Select for use coal as the used fuel of technological process;
Second step, oven dry, fragmentation, coal separation, levigate
With selected ore or slag drying, broken and levigate, if make raw material with bone coal, the coal that contains total coal amount about 70% is selected in the coal separation according to a conventional method between coal car of need sending to be elected from bone coal, and remaining coal is contained in the ore; Be finely ground to coal dust and fecula respectively after coal and the ore oven dry;
The 3rd step, the high temperature oxidation gasification
Coal dust and fecula sent in the rotary kiln respectively calcine, the material top temperature is higher than 1250 ℃ in the control rotary kiln, and the flue-gas temperature of kiln discharge is not less than 650 ℃, and ore particles can disintegration under the high temperature, and the vanadium in the raw material can oxic gas change into V
2O
5Gas is discharged with kiln gas; Grog after the calcining enters in the cooler and carries out countercurrent flow with freezing air, makes it become hot blast and goes into kiln;
The 4th step, using waste heat from tail gas utilization and dedusting cooling
Go out kiln exhaust gas and enter the waste heat boiler recovery waste heat, the separate solid grit, and reduce flue-gas temperature; Or do not enter waste heat boiler, directly by the water spraying atomization device, reduce flue-gas temperature; The dust of collecting is put in the caustic soda dilute solution in the alkali-soluble slot into stirring and dissolving V
2O
5Generate NaVO
3Slag after the filtration returns the fecula storehouse after dehydrating, enter calcined by rotary kiln system vanadium again with fecula;
In the 5th step, vanadium and desulfurization discharging are received in pickling or alkali cleaning
Tail gas after the cooling is pumped to the inlet pipe of pickling tower or soda-wash tower bottom through blower fan, in tower with cat head under dilute sulphuric acid or soda ash solution counter current contact absorb V
2O
5, generate (VO
2)
2SO
4Or NaVO
3Solution, the fine solid particle in the simultaneously further flush away tail gas; Pickling tail gas enters in the thionizer, carries out desulfurization with lime milk solution and handles, back up to standard discharging;
In the 6th step, purify the system vanadium
The washing lotion that contains vanadium, dirt of coming out at the bottom of the pickling tower successively enters drags for sandpit and equipment for separating liquid from solid, returns the fecula storehouse after sand setting of pulling out in the sandpit and the slag of separating dehydrate, and advances calcined by rotary kiln again; Clear liquid is evacuated to the hydrolytic purification groove with pump, adds soda ash adjustment pH value and removes impurity; Removal of impurities liquid enters equipment for separating liquid from solid, and clear liquid is a scavenging solution, can make qualified ammonium meta-vanadate and Vanadium Pentoxide in FLAKES product by traditional method; Pickling tail gas carries out desulfurization and handles discharging again.
In the first step of aforesaid method, described ore is or the scherbinaite coal, or vanadium shale, and containing vanadium slag is the red mud that the manufacture aluminum oxide is discharged, or contains the slag that vanadium iron ore deposit steel-refining produces.
In second step of aforesaid method, the fecula fineness that is finely ground to after the oven dry of described ore is 100～200 orders (0.15mm～0.075mm); Described coal oven dry back levigated fineness of pulverized coal is-200 orders.
In the 3rd step of aforesaid method, described coal dust enters rotary kiln with hot blast from kiln hood (hot junction), and described fecula enters rotary kiln from kiln tail (cold junction).
In the 4th step of aforesaid method, described dedusting is to isolate most solid grits, and cooling is that flue-gas temperature is reduced to below 150 ℃.
In the 5th step of aforesaid method, the V after described pickling or the alkaline cleaning procedure control pickling in the tail gas
2O
5＜30 * 10
-6Described pickling tail gas carries out desulfurization to be handled, and is to send the tail gas after the pickling to thionizer to remove SO with milk of lime
2, SO
3Deng obnoxious flavour, the waste water after the desulfurization enters equipment for separating liquid from solid, and the subparticle that makes calcium sulfate, calcium sulfite, lime carbonate and tail gas bring separates with clear liquid; Clear liquid returns complex acid groove deallocation system dilution heat of sulfuric acid, joins the doctor solution of limy breast at desulfurization process; Deliver to special-purpose gypsum stockyard after the slag dehydration of separating.
In the 6th step of aforesaid method, described traditional method is to produce " the red cake method " of Vanadium Pentoxide in FLAKES product, or " ion exchange method ", or " solvent extration ".
The contriver points out: because of bone coal becomes the cambrian period stratum of ore deposit before 500,000,000 years, and the fugitive constituent of coal extremely low (about 3%), granularity too slightly is being difficult for fire burns, and is unfavorable for the V in the shale
3+High temperature disintegration oxidation gasification; Coal dust is used to provide the calcining heat and dries ore, coal; When in rotary kiln, calcining,, can add coal in addition and supply as bone coal self coal dust quantity not sufficient; Different ore beds or different ore deposit sections, content of vanadium V after the homogenizing
2O
50.3%, just can use; Be higher than 650 ℃ of these two indexs and control stablely greater than 1250 ℃, exhaust temperature as long as can realize the highest material temperature, in the kiln discharge grog full content of vanadium less than 30 * 10
-6, it is exactly sure that the transformation efficiency of obtaining vanadium is higher than 90% effect.
The contriver points out again: advancing the kiln hood preheating of air can be realized by cooler, high temperature chamotte goes out that kiln hood is laggard goes into cooler, freezing air in cooler with the grog countercurrent flow, make the into air heating of kiln hood, deliver to grog canopy or stockyard after going out the grog cooling of cooler, cooled grog is the good raw material that the cement mill produces cement.
The contriver also points out: for the waste heat recovery of tail gas, if Project design throughput is less, builds afterheat generating system and can not realize more energy efficiency, increase construction investment that on the contrary can be meaningless.After adjusting assessment, can not establish device for generating power by waste heat, only need on the pipeline of tail gas kiln discharge, install water spraying atomization device or special cooling tower additional, make tail gas be cooled to＜150 ℃ just can send into pickling tower or soda-wash tower and receive vanadium and operate.
The inventive method is carried out blank calcination without any additives to containing navajoite stone or slag, can make the Transformation efficiency is up to 90 % of vanadium, no waste water, waste sludge discharge, and waste gas can be guaranteed qualified discharge, can not produce problem of environmental pollution; And reduced investment, energy consumption is low, cost is low, realizes that easily factory maximizes.Be applicable to the producer that produces ammonium meta-vanadate and Vanadium Pentoxide in FLAKES.
Embodiment
Embodiment 1 gets certain scherbinaite colliery, and after testing, this ore contains full vanadium (with V
2O
5Meter, down together) 1.0%, fixed carbon 16%, fugitive constituent 2.8%, water content 8% meets processing requirement, enters the level ground, ore deposit.Because of thermal value higher, but portion's coal separation.Deliver to jaw crusher to be broken into＜granularity of 20mm, deliver to hot blast ball mill (claim again air swept mill) again to be milled to～fecula of 200 orders (0.075mm), delivering to the fecula storehouse again sends into the hollow dry-process rotory kiln with screw feeder from the kiln tail at the bottom of by the storehouse and moves to kiln hood, simultaneously with hot flue gas heat exchange, temperature of charge is more and more higher, when temperature reaches 400 ℃～500 ℃, the water of constitution in the bone coal in all aluminosilicates all discharges; To more than 550 ℃, the coal initial burning burning in the bone coal raises kiln temperature more, and makes ore particle disintegration, aluminosilicate further resolve into active higher unbodied aluminum oxide and silicon oxide; Can decompose fully to about 800 ℃.Simultaneously, the V of shale minerals lattice
3+Ion is also with unbodied V
2O
3Molecule exists, and at high temperature further is oxidized to V by airborne oxygen
2O
5, evaporate into simultaneously in the hot flue gas; When temperature is increased to more than 1150 ℃ V
2O
5Can be decomposed into VO
2And O
2, help the V of solid phase
2O
5Volatilize more thoroughly.During to the material fusion, barium oxide remaining in the material is practically negligible, all evaporate in the gas phase with hot flue gas flow direction kiln tail; Expel from kiln during to 850 ℃ and become tail gas.Tail gas enters vertical waste heat boiler from tangential direction, produces middle pressure steam, promotes the turbine driven set generating.Exhaust temperature is reduced to about 150 ℃, the V in the tail gas from 850 ℃
2O
5All become solid particle; Part is settled down to useless pot bottom formation with the breeze in the tail gas and contains vanadium powder dirt, ejects from useless pot bottom and delivers to alkali-soluble slot.After this, with the V in 5%～10% the caustic soda soln dissolving dust
2O
5Become NaVO
3Solution is delivered to the fecula storehouse after the filter residue after the filtering separation dehydrates, the reentry calcined by rotary kiln; Contain NaVO
3Filtrate incorporate the scavenging solution of clarification after the removal of impurities into and advance further enrichment and the purification that ion-exchanger carries out vanadium.Part of V
2O
5Be contained in from useless pot tail gas discharged, successively enter two-stage pickling tower.The one-level tower acid solution washing tail gas of discharging at the bottom of the secondary tower; The secondary tower washs the tail gas that one-level pickling tower is discharged once more with 3% dilute sulphuric acid, guarantees V in the secondary tower exhaust gas body
2O
5＜30 * 10
-6The sulfuric acid lotion of discharging in the one-level tower enters equipment for separating liquid from solid by dragging for pit, and supernatant liquor is delivered to the hydrolytic purification pond, uses soda ash Na
2CO
3Transfer to pH4～4.5, fully stir the generation post precipitation and send into equipment for separating liquid from solid, clear liquid enters ion-exchanger, makes VO
3 -Be adsorbed on the anionite-exchange resin, resin stops upper prop after inhaling " satisfying ", with elutriant from the resin VO
3 -Elute.Contain the vanadium elutriant and enter settling bowl, sedimentation was got supernatant liquor and is added ammonium chloride NH after 24 hours
4Cl generates the ammonium meta-vanadate precipitation, leaves standstill 12 hours after-filtration and gets the ammonium meta-vanadate crystal, sends into calcined by rotary kiln, at 500 ℃
-Stopped about 3 hours in 550 ℃ the warm air, ammonium meta-vanadate resolves into V
2O
5Product and ammonia NH
3, contain NH
3Tail gas introduce the ammonia recovery tower and reclaim ammonia with hydrochloric acid soln and generate NH
4Cl.So both protect environment, reduced NH again
4The consumption of Cl.
Drag for and send into raw material silo behind the dewatering and drying that the slag pulled out in the pit and solid-liquid separation go out and advance rotary kiln and calcine again.Should carry out the vanadium recycling after the precipitation dehydration that hydrolysis produces, the waste residue behind the recovery vanadium is an aluminosilicate, send the stockyard exclusive district to store up take-away after the dehydration.Precipitation after the ion-exchange mainly is a silicon compound, after the dehydration can with the slag dump that produces after the hydrolysis together.Precipitation after the desulfurization mainly is a gypsum.Deliver to cinder yard after the dehydration and prepare to take out the cement mill.
Material in the rotary kiln, when the coal afterburnt, temperature of charge peaks very soon, and is partially molten state.When kiln hood moved, with the freezing air countercurrent flow that advances kiln, temperature of charge reduced gradually, and air themperature raises gradually.During to kiln hood, clinker temperature is lower than 200 ℃.The kiln discharge grog is delivered to windrow canopy or stockyard.
Embodiment 2 certain scherbinaite colliery after testing, this ore contains vanadium 0.31%, fixed carbon 8%, fugitive constituent 3.2%, moisture 7% meets processing requirement.Ore storage is gone into the level ground, ore deposit, deliver to the coal separation workshop again, through equipment works such as fragmentation, screening, hydrocyclone, jig, dense media preparation machine and flotation machine, bone coal ore deposit branch hanked to be contained vanadium coal and contains coal ore.They are dewatered respectively, dry, be finely ground to satisfactory coal dust and raw material powder.Coal dust deposits Pulverized Coal Bin in, is blown into kiln hood (temperature end) burning with air, provides the incendiary heat to rotary kiln; Air through the cooler preheating enters kiln hood simultaneously, both as heat carrier, also for the residual coal of breeze provide the burning with and with V
3+Be oxidized to V
2O
5Oxygen.The grog that goes out kiln hood goes dedicated storage yard to store up after entering cooler and freezing air heat exchange, cooling.Top temperature is higher than 650 ℃ greater than 1250 ℃, kiln discharge exhaust temperature in the kiln more easy to control in this way.Go out kiln exhaust gas with soda ash solution in the two-stage soda-wash tower, connect the absorption V
2O
5, can make the V in the gas
2O
5Be lower than 10 * 10-6, be better than acid wash.Alkaline wash is neutralized to pH2 with sulfuric acid, separates obtaining red cake (V after the heating sedimentation
2O
5Crude product), can make V with traditional " red cake method "
2O
5Elaboration.Tail water after the separate red cake is sent into causticizing tank, adds milk of lime and gets calcium sulfate, calcium sulfite and sodium hydroxide solution, isolates gypsum and send the stockyard, and NaOH solution send carbonating tower, obtains Na
2CO
3Solution is sent soda-wash tower back to and is recycled, and the yellow soda ash that is consumed needs to replenish in addition, but the tail gas qualified discharge that carbonating tower is discharged.
Embodiment 3 gets and contains vanadium slag and wear into～200 orders compass screen surface surplus 10%.Cooperate special-purpose coal mill, fine coal storehouse, coal delivery system and Coal powder spray firing system.Used coal burning caloricity is greater than 25000kJ/kg, its fugitive constituent〉10% for well.The coal-grinding powder fineness is～200 orders, compass screen surface surplus 15%.The set-up mode of Coal powder spray firing system is identical with dry method cement rotary kiln.The kiln discharge tail contains V
2O
5Hot flue-gas temperature〉800 ℃, the flue gas processing mode is with embodiment one.Go out the kiln hood clinker temperature and be about 1000 ℃, enter cooler.The cooling tail advances freezing air and hot grog countercurrent flow, goes out cooler clinker temperature＜200 ℃; Advance the kiln head heat air themperature〉600 ℃.Most important temperature is a material top temperature in the rotary kiln in this cover system〉1250 ℃, the kiln discharge tail contains V
2O
5Exhaust temperature〉800 ℃.
Vanadiumcontent height in the slag is used for the corresponding raising of sulfuric acid concentration of pickling, V in the tail gas of assurance second stage pickling tower
2O
5Be lower than 10 * 10
-6
Embodiment 4 one families produce V with traditional technology and rotary kiln at present
2O
5Enterprise, employing is set up suspended preheater preheating scherbinaite coal fecula at the kiln tail, transform cooler at kiln hood, strengthen exchange capability of heat, improve measures such as advancing the kiln hood hot blast temperature, realize that the material top temperature is higher than 1250 ℃ in the kiln, the kiln discharge exhaust temperature has been higher than 650 ℃ of these two important temperature index just.With new thermal source (as coal dust, coal gas, fuel oil etc.) fecula is carried out preheating in addition, to guarantee above-mentioned 2 technic indexs.Go out kiln exhaust gas and do not advance preheater but enter waste heat boiler or the tail gas refrigerating unit, its after-treatment device also should be transformed by embodiment one.Just can improve V greatly by the present invention
2O
5Output capacity improves enterprise's production capacity, reduces cost, and improves the business economic benefit, and solves problem of environmental pollution.
Claims (7)
1 one kinds with containing navajoite stone or containing the method that vanadium slag is produced Vanadium Pentoxide in FLAKES, is the method that makes the gasification of vanadium high temperature oxidation, and its feature may further comprise the steps:
The first step is selected materials
Select full content of vanadium V
2O
50.3% ore or slag be as raw material; Select for use coal as the used fuel of technological process;
Second step, oven dry, fragmentation, coal separation, levigate
With selected ore or slag drying, broken and levigate, if make raw material with bone coal, the coal that contains total coal amount about 70% is selected in the coal separation according to a conventional method between coal car of need sending to be elected from bone coal, and remaining coal is contained in the ore; Be finely ground to coal dust and fecula respectively after coal and the ore oven dry;
The 3rd step, the high temperature oxidation gasification
Coal dust and fecula sent in the rotary kiln respectively calcine, the material top temperature is higher than 1250 ℃ in the control rotary kiln, and the flue-gas temperature of kiln discharge is not less than 650 ℃, and ore particles can disintegration under the high temperature, and the vanadium in the raw material can oxic gas change into V
2O
5Gas is discharged with kiln gas; Grog after the calcining enters in the cooler and carries out countercurrent flow with freezing air, makes it become hot blast and goes into kiln;
The 4th step, using waste heat from tail gas utilization and dedusting cooling
Go out kiln exhaust gas and enter the waste heat boiler recovery waste heat, the separate solid grit, and reduce flue-gas temperature; Or do not enter waste heat boiler, directly by the water spraying atomization device, reduce flue-gas temperature; The dust of collecting is put in the caustic soda dilute solution in the alkali-soluble slot into stirring and dissolving V
2O
5Generate NaVO
3Slag after the filtration returns the fecula storehouse after dehydrating, enter calcined by rotary kiln system vanadium again with fecula;
In the 5th step, vanadium is received in pickling or soda ash solution is received vanadium and desulfurization discharging
Tail gas after the cooling is pumped to the inlet pipe of pickling tower or soda-wash tower bottom through blower fan, in tower with cat head under dilute sulphuric acid or soda ash solution counter current contact absorb V
2O
5, generate (VO
2)
2SO
4Or NaVO
3Solution, the fine solid particle in the simultaneously further flush away tail gas; Pickling tail gas enters in the thionizer, carries out desulfurization with lime milk solution and handles, back up to standard discharging;
In the 6th step, purify the system vanadium
The washing lotion that contains vanadium, dirt of coming out at the bottom of the pickling tower successively enters drags for sandpit and equipment for separating liquid from solid, returns the fecula storehouse after sand setting of pulling out in the sandpit and the slag of separating dehydrate, and advances calcined by rotary kiln again; Clear liquid is evacuated to the hydrolytic purification groove with pump, adds soda ash adjustment pH value and removes impurity; Removal of impurities liquid enters equipment for separating liquid from solid, and clear liquid is a scavenging solution, can make qualified ammonium meta-vanadate and Vanadium Pentoxide in FLAKES product by traditional method; Pickling tail gas carries out desulfurization and handles discharging again.
2 the method for claim 1 is characterized in that in the first step, and described ore is or the scherbinaite coal, or vanadium shale, and containing vanadium slag is the red mud that the manufacture aluminum oxide is discharged, or contain the slag that vanadium iron ore deposit steel-refining produces.
3 the method for claim 1 is characterized in that in second step that the fecula fineness that is finely ground to after the described ore oven dry is 100～200 orders; Described coal oven dry back levigated fineness of pulverized coal is-200 orders.
4 the method for claim 1 is characterized in that described coal dust enters rotary kiln with hot blast from kiln hood in the 3rd step, and described fecula enters rotary kiln from the kiln tail.
5 the method for claim 1 is characterized in that described dedusting is the solid grit of particle separation diameter greater than 5 μ m in the 4th step, and cooling is that flue-gas temperature is reduced to below 150 ℃.
6 the method for claim 1 is characterized in that in the 5th step, the V after the described acid cleaning process control pickling in the tail gas
2O
5＜10 * 10
-6Described pickling tail gas carries out desulfurization to be handled, and is to send the tail gas after the pickling to thionizer to remove SO with milk of lime
2, SO
3Deng obnoxious flavour, the waste water after the desulfurization enters equipment for separating liquid from solid, and the subparticle that makes calcium sulfate, calcium sulfite, lime carbonate and tail gas bring separates with clear liquid; Supernatant liquor returns complex acid groove deallocation system dilution heat of sulfuric acid, joins the doctor solution of limy breast at desulfurization process; Deliver to special-purpose gypsum stockyard after the slag dehydration after the separation.
7 the method for claim 1 is characterized in that described traditional method is to produce " the red cake method " of Vanadium Pentoxide in FLAKES product, or " ion exchange method ", or " solvent extration " in described the 6th step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101024017A CN101445271A (en) | 2009-01-04 | 2009-01-04 | A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101024017A CN101445271A (en) | 2009-01-04 | 2009-01-04 | A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101445271A true CN101445271A (en) | 2009-06-03 |
Family
ID=40741203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101024017A Pending CN101445271A (en) | 2009-01-04 | 2009-01-04 | A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101445271A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391904A (en) * | 2011-10-10 | 2012-03-28 | 郑峰 | Technology for increasing value of stone coal and extracting valuable metal elements |
| CN103422114A (en) * | 2012-05-15 | 2013-12-04 | 攀钢集团攀枝花钢钒有限公司 | Preparation method for potassium metavanadate |
| CN104073642A (en) * | 2014-07-25 | 2014-10-01 | 南京华电节能环保设备有限公司 | Method for producing nonferrous metals with slag |
| CN104445233A (en) * | 2014-12-17 | 2015-03-25 | 邵燕 | Industrialized production method of wollastonite |
| CN104745799A (en) * | 2015-03-19 | 2015-07-01 | 河北钢铁股份有限公司承德分公司 | Method for controlling redox atmosphere of rotary kiln |
| CN105603177A (en) * | 2016-03-04 | 2016-05-25 | 中钢集团鞍山热能研究院有限公司 | Oxygen-enriched roasting method and device for extracting vanadium from inferior coal |
| WO2019193510A1 (en) * | 2018-04-03 | 2019-10-10 | Reliance Industries Limited | Process for obtaining vanadium oxide from a gasifier slag |
-
2009
- 2009-01-04 CN CNA2009101024017A patent/CN101445271A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391904A (en) * | 2011-10-10 | 2012-03-28 | 郑峰 | Technology for increasing value of stone coal and extracting valuable metal elements |
| CN103422114A (en) * | 2012-05-15 | 2013-12-04 | 攀钢集团攀枝花钢钒有限公司 | Preparation method for potassium metavanadate |
| CN103422114B (en) * | 2012-05-15 | 2016-05-04 | 攀钢集团攀枝花钢钒有限公司 | A kind of preparation method of potassium metavanadate |
| CN104073642A (en) * | 2014-07-25 | 2014-10-01 | 南京华电节能环保设备有限公司 | Method for producing nonferrous metals with slag |
| CN104445233A (en) * | 2014-12-17 | 2015-03-25 | 邵燕 | Industrialized production method of wollastonite |
| CN104745799A (en) * | 2015-03-19 | 2015-07-01 | 河北钢铁股份有限公司承德分公司 | Method for controlling redox atmosphere of rotary kiln |
| CN105603177A (en) * | 2016-03-04 | 2016-05-25 | 中钢集团鞍山热能研究院有限公司 | Oxygen-enriched roasting method and device for extracting vanadium from inferior coal |
| CN105603177B (en) * | 2016-03-04 | 2018-01-16 | 中钢集团鞍山热能研究院有限公司 | A kind of method and device of colm vanadium extraction oxygen-enriched air roasting |
| WO2019193510A1 (en) * | 2018-04-03 | 2019-10-10 | Reliance Industries Limited | Process for obtaining vanadium oxide from a gasifier slag |
| US11945728B2 (en) | 2018-04-03 | 2024-04-02 | Reliance Industries Limited | Process for obtaining vanadium oxide from a gasifier slag field |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101913632B (en) | Method for extracting aluminum oxide, monox and ferric oxide from gangue combustion ashes | |
| CN101445271A (en) | A method of producing vanadic oxide by using ore containing vanadium or SLAG containing vanadium | |
| CN102442650B (en) | Method for producing sulfuric acid and co-producing calcium carbide by phosphogypsum | |
| CN104386720B (en) | Method for acid-alkali combined extraction of alumina from high-silicon aluminum-containing mineral raw material | |
| CN106904849A (en) | The system and method that a kind of utilization Industrial Solid Waste produces sulphate aluminium cement co-producing sulfuric acid | |
| CN104445313B (en) | Method for extracting aluminum oxide from fly ash by acid-base combination | |
| CN104555946B (en) | Method for jointly producing sulphuric acid and cement clinker by using sulphur gas to reduce gypsum | |
| CN104211033B (en) | For from the equipment going out phosphoric acid processed in kiln flue gas of kiln-process phosphoric acid technique | |
| CN104477926B (en) | A kind of method that coal ash alkali soaks sintering hydro-thermal method produces eakleite and aluminium oxide | |
| CN101941725A (en) | Method for extracting aluminum oxide from coal gangue and co-producing active calcium silicate | |
| CN111410446B (en) | Method and production system for recycling solid waste in aluminum industry by rotary kiln | |
| WO2014194564A1 (en) | Device and process for fluorine recovery from smoke after phosphorus absorption by hydration in kiln process for production of phosphoric acid | |
| CN109516484A (en) | A method of aluminium oxide is produced with carbide slurry flyash and coal gangue sintering method | |
| CN109809456A (en) | A kind of system and method for coal gasification collaboration gypsum calcining coproduction calcium oxide and sulphur | |
| WO2016086826A1 (en) | Improved device for preparing phosphoric acid from kiln egression flue gas of phosphoric acid process of kiln method, and phosphoric acid preparing process | |
| CN106810094B (en) | The system and method for cement joint production sulphur is prepared using municipal waste and Industrial Solid Waste | |
| CN102020251A (en) | Improved production process for preparing sulfuric acid and cement from gypsum | |
| CN100532266C (en) | Technique for producing hydrate alumina and silicic acid with coal ash | |
| CN102746086B (en) | Technique and device for coproducing carbide slag cement in a dry-method acetylene process | |
| CN105217588B (en) | Yellow phosphorus coproduction sylvite, aluminum oxide, molecular sieve, the circulation clean production method of slag cements and architectural shape | |
| CN103922369A (en) | Process of producing magnesium carbonate-series products by dolomite lime smoke gas desulfurization carbon-drop power generation | |
| CN101857253B (en) | Process for producing aluminium hydroxide, silicic acid and sodium carbonate by utilizing fly ash | |
| CN100532264C (en) | Technique for producing hydroted alumina and silicic acid with coal gangue | |
| CN108706615A (en) | A kind of method of comprehensive utilization of ardealite, high-sulfur bauxite and flyash | |
| CN101870484B (en) | Process for producing aluminium hydroxide and cement by utilizing fly ash |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090603 |