CN101182596A - Method for extracting vanadic anhydride from stone coal vanadium ore - Google Patents
Method for extracting vanadic anhydride from stone coal vanadium ore Download PDFInfo
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- CN101182596A CN101182596A CNA2007101685608A CN200710168560A CN101182596A CN 101182596 A CN101182596 A CN 101182596A CN A2007101685608 A CNA2007101685608 A CN A2007101685608A CN 200710168560 A CN200710168560 A CN 200710168560A CN 101182596 A CN101182596 A CN 101182596A
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- bone coal
- flakes
- coal navajoite
- vanadium pentoxide
- 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
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- 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 extracting vanadic oxide from bone coal vanadium mine; the method comprises the following steps that the bone coal vanadium mine is selected to be delivered into a kiln for baking and the kiln temperature is controlled between 750 to 1100 Celsius degrees and the discharge temperature of the baked material is 750 to 1000 Celsius degrees; and then the materials are delivered into a heat-preservation warehouse to be kept still for 24 to 120 hours; and then the material is extracted and the pH value of the obtained extraction liquid is adjusted to be 2.5; the liquid is absorbed and desorbed to obtain the desorption liquid and then the desorption liquid is purified and the silicon and phosphor in the desorption liquid is removed; ammonium chloride is added to precipitate vanadium and obtain ammonium meta-vanadate; the ammonium meta-vanadate is implemented with the process of pyrolysis to obtain the vanadic oxide. The beneficial effect of the invention is that the bone coal vanadium mine is directly baked which reduces the working procedures of baking, proportioning, ball grinding and balling; the invention adopts the heat-preserving warehouse for preserving heat and the extraction rate can reach more than 90 percent if the temperature is kept between 750 to 1100 Celsius degrees for more than 72 hours; the extraction rate is higher if the heat-preserving time is longer; moreover, the mechanization degree is high and no dust pollution exists.
Description
Technical field
The present invention relates to rare Non-ferrous Metallurgy industry, concrete relate to a kind of method of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES.
Background technology
Extract the traditional technology of Vanadium Pentoxide in FLAKES in the bone coal navajoite because baking flue gas and contaminated wastewater are serious, and the rate of recovery is low, the production cost height, superseded fully at present, the technology of extracting Vanadium Pentoxide in FLAKES now in the bone coal navajoite mainly contains following several mode:
(1) the direct ball milling of raw ore (being bone coal navajoite), sulfuric acid with 15-25%, controlled temperature is more than 90 ℃, take the leaching of peracid high temperature, leaching liquid is transferred alkali solvent extraction vanadium through ammoniacal liquor, dilute sulphuric acid reextraction vanadium, and strip liquor is transferred alkali pH value to 2 with ammoniacal liquor, the precipitation of heating gets the ammonium poly-vanadate product, production instance such as Shaanxi Province's adret vanadium industry company though this technology does not have baking flue gas, soak slag and can add the stacking up to standard of lime neutralizing treatment, but extraction tail water can not fully recovering, need a discharging part to reach the balance of water, have certain environmental protection hidden danger, and this technical process complexity, the sulfuric acid consumption is big, and smart vanadium production cost per ton reaches ten thousand yuan of 6-7.Production process need be heated, energy consumption is big, and only be suitable for being the attached stone coal vanadium-containing ore of ion suction attitude, bad adaptability, illite, kaolinite, roscoelite are contained navajoite stone incompatibility, and China's stone coal vanadium-containing resource 90% is to contain vanadium with illite, kaolinite, roscoelite, and the navajoite resource that is the ionic adsorption attitude accounts for less than 10%, has restricted the application of this technology;
(2) adding 4% yellow soda ash with the sodium-chlor of 0.5-2% is the balling-up of composite additive batching, goes into flat kiln roasting, and calcining is gone into pond water normal temperature leaching, and leaching liquid is used the saturated nacl aqueous solution desorb through 717 resin absorption, and stripping liquid adds the ammonium chloride precipitation and gets the ammonium meta-vanadate product.The dump leaching of water logging tailings sprays with dilute sulphuric acid, spray liquid is through transferring alkali to pH value 2.5-3.0, through the D201 resin absorption, saturated resin sodium hydroxide desorb, stripping liquid purifies silica removal phosphorus, add the ammonium chloride precipitation and get the ammonium meta-vanadate product, the beautiful allusion quotation smelting nine heavy vanadium industry company production technique in earlier stage in production instance such as Xichuan County, Henan.This technology water logging adds the acidleach rate of recovery and can reach more than 70%, ten thousand yuan of one ton of smart vanadium of the about 5-6 of production cost.The shortcoming of this technology is that baking flue gas is difficult to reach discharging standards, and waste water can not all recycle, and must discharge the balance that a part could guarantee the unimpeded and water of technology.
(3) be that additive is equipped with the balling-up of commercial lime batching and goes into flat kiln calcification baking with 2% yellow soda ash, calcining is with the dump leaching of dilute sulphuric acid normal temperature, leaching liquid transfer pH value to 2.5-3.0 through the D201 resin absorption, use the sodium hydroxide desorb, stripping liquid adds the ammonium chloride precipitation and gets the ammonium meta-vanadate product through purifying silica removal phosphorus.The beautiful allusion quotation smelting nine heavy vanadium in production instance such as Xichuan, Henan are company already, and the permanent imperial vanadium in Hefeng, Hubei is company already.This technology disposal of three wastes very easily, baking flue gas is lower than discharging standards, process water recycles zero release, waste residue adds lime neutralization and can reach the general waste of country and stack standard, also can be sold to the cement mill, is a kind of high grade cement stopping composition.This technology rate of recovery can reach more than 70%, and the smart vanadium production cost of ton is ten thousand yuan of 4.5-5.5.But this technology exists following shortcoming: 1. the workshop dust pollution is serious; 2. furnace temperature requires at 750 ℃-850 ℃, and furnace temperature requires strict, and the furnace temperature scope is narrow, is difficult to control, the productive capacity instability, and the highest commentaries on classics rate of soaking of industrial production can reach 88%, and low has only 50%; 3. the leaching of the bottom of four limits, dump leaching field and heap not exclusively causes leaching rate low; 4. the sulfuric acid consumption is big, used yellow soda ash, and lime is alkaline reagents, when roasting reacts incomplete, can quantitatively consume sulfuric acid, and when particularly furnace temperature was on the low side, the sulfuric acid consumption was multiplied, and smart vanadium per ton need consume sulfuric acid 15-20 ton; 5. production cost is also than higher.
Summary of the invention
Problem to be solved by this invention be propose at above-mentioned prior art that a kind of production technique is easy to control, the high and low cost of the rate of recovery, the free of contamination method of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES.
The present invention for the solution that problem adopts of the above-mentioned proposition of solution is: a kind of method of extracting Vanadium Pentoxide in FLAKES from bone coal navajoite includes the next coming in order step:
1) at first chooses bone coal navajoite, carry out slightly broken and thin broken;
2) bone coal navajoite after the above-mentioned fragmentation is gone into the kiln roasting, 750 ℃-1100 ℃ of control furnace temperature, 750～1000 ℃ of the drop temperatures of gained roasting material;
3) under 750～1000 ℃ of temperature, enter to be incubated the static insulation of feed bin 24～120 hours;
4) will be incubated the cooling of feed bin bottom and expect the mechanize discharging and be delivered to leaching vat to leach, then the gained leaching liquid be transferred pH value to 2.5 with dilute sulphuric acid;
5) get stripping liquid through D201 resin absorption, NaOH desorb, stripping liquid through purifying silica removal phosphorus, is added the ammonium chloride precipitation and gets ammonium meta-vanadate, pyrolysis obtains Vanadium Pentoxide in FLAKES.
The described bone coal navajoite fixed carbon of step 1) content 5-10%.
The described bone coal navajoite granularity of step 1) 8-12cm accounts for 25～30%.
Step 2) describedly goes into kiln roasting Wei rotation rotary kiln, rotary kiln or tunnel furnace roasting.
Step 2) described furnace temperature is 750 ℃-900 ℃.
Step 2) described drop temperature is 750 ℃-900 ℃.
The key distinction point of the present invention and prior art is:
1. do not add any additives;
2. bone coal navajoite is not pulverized ball milling, do not prepare burden, not balling-up is gone into the dynamic roasting of kiln with block (granular) form;
3. 750～1100 ℃ of gained roasting material control drop temperatures are gone into the static long-time insulation of round shape insulation feed bin;
4. the cooling material is with block (granular) form mechanize discharging, and Vanadium Pentoxide in FLAKES is carried in helical feed to leaching vat dilute sulphuric acid normal temperature leaching.
Traditional theory is thought, want from bone coal navajoite, to extract Vanadium Pentoxide in FLAKES, must add certain sodium salt is additive, the crystalline network bone coal navajoite of ionic adsorption attitude (be except) of destroying illite, kaolinite, roscoelite under certain high temperature discharges vanadium, takes water logging or acid leaching process could realize extracting Vanadium Pentoxide in FLAKES.
As long as and it is considered herein that and satisfy certain maturing temperature and the soaking time of control under the certain temperature, can destroy the crystalline network that contains vanadium illite, kaolinite, roscoelite equally vanadium is discharged.The reaction mechanism of the present invention in roasting process is as follows:
1. under the certain high temperature condition, contain vanadium
Illite (Al
2(V
2) O
32SiO
2FeO2H
2O)
Kaolinite (Al
2(V
2) O
32SiO
22H
2O)
Roscoelite (K
2(Na
2) Al
2O
32V
2O
36SiO
22H
2O) 2 water molecules volatilizations in break away from, and make it contain vanadium illite, kaolinite, roscoelite formation polar molecule, asymmetric its lattice deformability that causes of electronic cloud motion.
2. vanadium is a valence variation element, and under long-time soak condition, but the vanadium slow oxidation is high valence state, and the trajectory of electron motion transition is expanded its molecular structure that contains vanadium illite, kaolinite, roscoelite, shrinkage strain, and lattice fracture vanadium discharges then.
Therefore it is proportional to contain under height that the scherbinaite coal changes the rate of soaking and the certain temperature soaking time, be that soaking time under the certain temperature is long more, it is high more that rate is soaked in its commentaries on classics, and it is irrelevant to change the additive types and the amount of soaking rate and adding under certain temperature and soaking time, relevant with temperature and soaking time.In the present invention, as long as can guarantee temperature 750-1100 ℃, its commentaries on classics was soaked rate and just can be reached more than 90% more than 72 hours the time, and soaking time is long more, and it is high more to change the rate of soaking.
Under the acting in conjunction of high temperature and long-time insulation, the vanadium that contains in vanadium illite, kaolinite, the roscoelite can be discharged fully, block (granular) roasting, bulk (granular) leaching recovery vanadium have been realized, it is serious to have solved vanadium extraction workshop dust pollution, produce difficult control, the rate of recovery is low, the drawback that production cost is high.
Beneficial effect of the present invention is:
1. the present invention directly carries out roasting to bone coal navajoite, reduce to bone coal navajoite dry, batching, ball milling, balling-up worker system, the investment of having saved fixed capital has solved the dust pollution in workshop again;
2. maturing temperature scope of the present invention is the 750-1100 degree, roasting Cai Yong rotation rotary kiln, tunnel furnace or rotary kiln, all can satisfy its processing requirement, above-mentioned kiln shape exhaust gas dust control has sophisticated technology and advanced suite of equipment to adopt, and can satisfy the process for cleanly preparing requirement;
3. the sulphur in the bone coal navajoite takes to add the solid sulphur of lime, as long as when adding lime by stoichiometry excessive 50%, the fixed rate of sulphur can reach more than 90%;
4. two independent systems are set up in roasting of the present invention and insulation separately, adopt the insulation of insulation feed bin, can be according to ore characteristics control soaking time length, as long as can guarantee temperature 750-1100 ℃, its commentaries on classics was soaked rate and just can be reached more than 90% more than 72 hours the time, soaking time is long more, and it is high more to change the rate of soaking;
5. the present invention is incubated feed bin cooling material and takes machinery discharging automatically, and helical feed is to leaching vat, the high no dust pollution of mechanization degree;
6. leaching mode of the present invention is taked spray+drill traverse+spray, finishes in leaching vat, takes the cycle operation leaching mode of " two low height ", improved the leaching rate of recovery, enrichment liquid water contain the vanadium grade, reduce to transfer the workload of alkali, thereby reduce the investment of dump leaching place and resin accordingly;
7. acid consumption of the present invention is low, because of the alkaline reagents add-on greatly reduces, causes the vitriolic consumption to have only 1/3rd of former calcification roasting, and burning slag per ton only needs sulfuric acid 35-50kg, and smart vanadium consumption sulfuric acid amount per ton is the 4-6 ton;
8. the rate height is soaked in the present invention's commentaries on classics, and illite, kaolinite contain vanadium can reach 75-80%; Roscoelite, kaolinite contain the commentaries on classics rate of soaking of vanadium can be up to 80-94%;
9. this technology is changeed and is soaked rate of recovery height because of taking bulk (granular) roasting, bulk (granular) leaching, and the sulfuric acid consumption is low, and the smart vanadium cost of ton only needs ten thousand yuan of 2-4.
Embodiment
Below technology of the present invention is described in further detail.
Bone coal navajoite (control fixed carbon content 5-10%) → thick is broken+thin broken (control size 8-12cm accounts for 25～30%) → go into kiln (rotation rotary kiln, rotary kiln, tunnel furnace) roasting (750 ℃～1100 ℃ of control furnace temperature, 750～1000 ℃ of roasting material drop temperatures) → advance to be incubated feed bin insulation 24～120 hours → bottom cooling material mechanize discharging → helical feed to leaching vat → dilute sulphuric acid normal temperature spray+drill traverse+spray leaching → leaching liquid to transfer pH value to the 2.5 → D201 resin absorption → tail water of flowing through to recycle complex acid or make bath water, (, absorption tail water is enriched to when a certain amount of when being circulated to sulfate radical, add the lime neutralizing treatment, neutralizer returns complex acid) → saturated resin → get ammonium meta-vanadate product → pyrolysis and obtain Vanadium Pentoxide in FLAKES → tailings and add lime and neutralize and be sold to the cement mill through purifying silica removal phosphorus → add ammonium chloride precipitation with sodium hydroxide desorb → stripping liquid into mine tailing storehouse or oven dry.
Embodiment 1
1, ore dressing: at first choose bone coal navajoite (fixed carbon content 5-10%), carry out slightly broken and thin breaking, control bone coal navajoite granularity 8-12cm accounts for 25～30%;
2, roasting: with bone coal navajoite Ru rotation rotary kiln, rotary kiln or the tunnel furnace roasting after the above-mentioned fragmentation, 750 ℃ of control furnace temperature, 750 ℃ of the drop temperatures of gained roasting material;
3, under 750 ℃ of temperature, enter to be incubated the static insulation of feed bin 24 hours;
4, leaching, the roasting material that roasting is good, average grade 0.722% is changeed the rate 64.23% of soaking, with mass percentage concentration 5-6% sulfuric acid, sprays, acid consumption 86kg/T, the gained leaching liquid is adjusted pH value to 2.5, the D201 resin absorption of flowing through with dry powder;
5, transfer alkali: the leaching in early stage, leaching liquid need transfer alkali directly through the D201 resin absorption hardly, middle and later periods is when leaching, the free acid that cause does not have new heap consumption not run out of again must be taked to add dry powder and transfer alkali to pH value could guarantee the normal sorption of D201 resin more than 2.5, transfers alkali to stir static clarification by adding in 1: 1 of free acid in the leaching with dry powder and gets final product.
6, the wash-out of ion-exchange and Vanadium Pentoxide in FLAKES
Adsorbing selected ion is D201, is the macroporous strong basic resin anion(R.A) that Shanghai Resin Factory produces magnificent antelope board, this resin strong alkali-acid resistance, and antioxidant property is good, and is bigger to the loading capacity of Vanadium Pentoxide in FLAKES, and exchange capacity is 346kg/T.
Go out flow path φ 0.8m * 2m resin bucket with qualified leaching liquid or under the leaching liquid (being that pH value is 0 leaching liquid greater than 2.5 free acids) of dry powder accent alkali is enterprising, each resin bucket is filled the exchange column of D201 resin 800kg, control 0.5m
3The flow velocity in/time, it is 0 that absorption tail water begins, increase to 0.2g/L gradually, just can begin to recoil to water outlet and not have muddiness with clean tail water, sodium hydroxide solution with clear water preparation 8-12% adds in the resin, with pump circulation 15-20 minute, static immersion was put to treating pond in 2 hours, put equally for 6-7 time to treating pond with clear water washing and to prepare purification, for the first time the higher-grade of elutriant Vanadium Pentoxide in FLAKES is up to 248g/L, and lowest quality merges average grade 39.438g/L together about 2g/L, NaOH content 0.48%, P 0.05639g/L, SiO
23.5g/L, pH value 9.
7, purify: above-mentioned elutriant is higher because of silicon, phosphorus content, in adding ammonium chloride precipitation process silicon, phosphorus can be just as co-precipitation with ammonium meta-vanadate, so having a strong impact on the quality purification earlier of Vanadium Pentoxide in FLAKES removes silicon and phosphorus, take to add by silicone content 80%, add strong electrolyte and carry out silica removal phosphorus.
Elutriant after purifying, Vanadium Pentoxide in FLAKES grade 39.40g/L, pH value 9, SiO
20.019g/L P 0.0012g/L purifies back elutriant Vanadium Pentoxide in FLAKES and precipitates silicon deposition rate 99.46%, P deposition rate 97.87% hardly.
8, precipitation: will purify good elutriant supernatant liquor and transfer to the precipitation pond, precipitation is with transferring in the precipitation pond after the press filtration of sheetpile pressure filter below, extraordinarily go into the ammonium chloride precipitation by 2.5 of pentoxide content, stir on the edged limit, and quiescent setting is after 12 hours, analytically clear liquid Vanadium Pentoxide in FLAKES grade is reduced to below the 1g/L, it is complete to be considered as precipitation, extracts precipitation liquid out and adds clear water agitator treating quiescent settling again 12 hours, and washing lotion is accessed, following throw out is dried product ammonium meta-vanadate packing warehouse-in with drier.
7, the mass analysis of Vanadium Pentoxide in FLAKES
Vanadium Pentoxide in FLAKES standard GB 3283-87
| Index name | Metallurgical | Chemical industry | |
| V 2O 5-99 | V 2O 5-98 | V 2O 5-97 | |
| Vanadium Pentoxide in FLAKES % 〉=(V 2O 5) | 99.0 | 98.0 | 97 |
| Silicon (Si) %≤ | 0.15 | 0.15 | 0.25 |
| Iron (Fe) %≤ | 0.20 | 0.30 | 0.30 |
| Phosphorus (P) %≤ | 0.03 | 0.05 | 0.30 |
| Sulphur (S) %≤ | 0.01 | 0.03 | 0.30 |
| Arsenic (As) %≤ | 0.01 | 0.02 | 0.02 |
| Sodium oxide+oxidation pasture Na 2O+K 2O%≤potassium | 2.5 | ||
| Physical condition | Sheet | Sheet | Powdery |
The ammonium meta-vanadate of being produced through dry, pentoxide content is 64.37%, 280 ℃ and takes off ammonium, 500-550 ℃ of calcination 6 hours, orange Vanadium Pentoxide in FLAKES product, through assay, analytical results is as follows:
| Element | V 2O 5 | Fe | P | S | Si | As | Full vanadium |
| Content (%) | 97.22 | 0.08 | 0.019 | 0.02 | 0.08 | Do not detect | 99.48 |
Analytical results according to above smart vanadium, element harmful and required control is lower than state quality standard, the content of Vanadium Pentoxide in FLAKES is on the low side, but full vanadium is of high grade, when mainly being calcination oxidizing condition bad due to, as long as control the oxidizing condition of calcination well in industrial production, Vanadium Pentoxide in FLAKES can reach the requirement of metallurgical grade 98 vanadium fully.
Embodiment 2
850 ℃ of control furnace temperature, 850 ℃ of the drop temperatures of roasting material, insulation feed bin soaking time is 48 hours, and its commentaries on classics rate of soaking is 86.34%, and all the other are all with embodiment 1.
Embodiment 3
900 ℃ of control furnace temperature, 900 ℃ of the drop temperatures of roasting material, insulation feed bin soaking time is 72 hours, and its commentaries on classics rate of soaking is 94.42%, and all the other are all with embodiment 1.
Embodiment 4
900 ℃ of control furnace temperature, 850 ℃ of the drop temperatures of roasting material, insulation feed bin soaking time is 120 hours, and its commentaries on classics rate of soaking is 96.58%, and all the other are all with embodiment 1.
Embodiment 5
1100 ℃ of control furnace temperature, 1000 ℃ of the drop temperatures of roasting material, insulation feed bin soaking time is 72 hours, and its commentaries on classics rate of soaking is 96.50%, and all the other are all with embodiment 1.
Claims (6)
1. method of extracting Vanadium Pentoxide in FLAKES from bone coal navajoite includes the next coming in order step:
1) at first chooses bone coal navajoite, carry out slightly broken and thin broken;
2) bone coal navajoite after the above-mentioned fragmentation is gone into the kiln roasting, 750 ℃-1100 ℃ of control furnace temperature, 750～1000 ℃ of the drop temperatures of gained roasting material;
3) under 750～1000 ℃ of temperature, enter to be incubated the static insulation of feed bin 24～120 hours;
4) will be incubated the cooling of feed bin bottom and expect the mechanize discharging and be delivered to leaching vat to leach, then the gained leaching liquid be transferred pH value to 2.5 with dilute sulphuric acid;
5) get stripping liquid through D201 resin absorption, NaOH desorb, stripping liquid through purifying silica removal phosphorus, is added the ammonium chloride precipitation and gets ammonium meta-vanadate, pyrolysis obtains Vanadium Pentoxide in FLAKES.
2. by the described method of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES of claim 1, it is characterized in that the described bone coal navajoite fixed carbon of step 1) content 5-10%.
3. by claim 1 or the 2 described methods of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES, it is characterized in that the described bone coal navajoite granularity of step 1) 8-12cm accounts for 25～30%.
4. by claim 1 or the 2 described methods of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES, it is characterized in that step 2) describedly go into kiln roasting Wei rotation rotary kiln, rotary kiln or tunnel furnace roasting.
5. by the described method of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES of claim 1, it is characterized in that step 2) described furnace temperature is 750 ℃-900 ℃.
6. by the described method of from bone coal navajoite, extracting Vanadium Pentoxide in FLAKES of claim 1, it is characterized in that step 2) described drop temperature is 750 ℃-900 ℃.
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|---|---|---|---|
| CN200710168560A CN100580107C (en) | 2007-12-03 | 2007-12-03 | Method for extracting vanadic anhydride from stone coal vanadium ore |
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| CN200710168560A CN100580107C (en) | 2007-12-03 | 2007-12-03 | Method for extracting vanadic anhydride from stone coal vanadium ore |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101787430B (en) * | 2010-01-25 | 2011-10-05 | 辽宁晨光铁合金集团有限公司 | Method for increasing leaching rate of navajoite under navajoite kiln roasting condition |
| CN101830468B (en) * | 2009-03-10 | 2012-07-04 | 湖南金大地材料股份有限公司 | Process for extracting white carbon black in alkaline-leaching and vanadium extraction of stone coal |
| CN102560105A (en) * | 2012-02-07 | 2012-07-11 | 九江佰盾钒技术贸易有限公司 | Elution leaching method for recovering vanadium from stone coal vanadium ore |
| CN103194611A (en) * | 2013-04-01 | 2013-07-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing vanadium oxide |
| CN103952538A (en) * | 2014-04-18 | 2014-07-30 | 长沙有色冶金设计研究院有限公司 | Roasting method for stone coal navajoite in manners of lifting, adjusting air and supplying heat |
| CN104152698A (en) * | 2014-08-06 | 2014-11-19 | 南通汉瑞实业有限公司 | Recycling method of vanadium-nitrogen alloy waste materials |
| CN104531989A (en) * | 2014-12-22 | 2015-04-22 | 核工业北京化工冶金研究院 | Method for reducing leaching acid consumption and impurity dissolution rate of high-acid-consumption vanadium ore |
| CN110438336A (en) * | 2019-09-09 | 2019-11-12 | 宁夏京成天宝饲料添加剂有限公司 | A method of extracting vanadic anhydride from containing descloizite |
| CN115198116A (en) * | 2022-07-21 | 2022-10-18 | 上海寰泰绿钒科技有限公司 | Method for extracting vanadium from vanadium-containing stone coal |
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2007
- 2007-12-03 CN CN200710168560A patent/CN100580107C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830468B (en) * | 2009-03-10 | 2012-07-04 | 湖南金大地材料股份有限公司 | Process for extracting white carbon black in alkaline-leaching and vanadium extraction of stone coal |
| CN101787430B (en) * | 2010-01-25 | 2011-10-05 | 辽宁晨光铁合金集团有限公司 | Method for increasing leaching rate of navajoite under navajoite kiln roasting condition |
| CN102560105A (en) * | 2012-02-07 | 2012-07-11 | 九江佰盾钒技术贸易有限公司 | Elution leaching method for recovering vanadium from stone coal vanadium ore |
| CN103194611A (en) * | 2013-04-01 | 2013-07-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing vanadium oxide |
| CN103952538A (en) * | 2014-04-18 | 2014-07-30 | 长沙有色冶金设计研究院有限公司 | Roasting method for stone coal navajoite in manners of lifting, adjusting air and supplying heat |
| CN103952538B (en) * | 2014-04-18 | 2016-03-16 | 长沙有色冶金设计研究院有限公司 | The roasting method of wind concurrent heating is adjusted in a kind of bone coal navajoite lifting |
| CN104152698A (en) * | 2014-08-06 | 2014-11-19 | 南通汉瑞实业有限公司 | Recycling method of vanadium-nitrogen alloy waste materials |
| CN104531989A (en) * | 2014-12-22 | 2015-04-22 | 核工业北京化工冶金研究院 | Method for reducing leaching acid consumption and impurity dissolution rate of high-acid-consumption vanadium ore |
| CN110438336A (en) * | 2019-09-09 | 2019-11-12 | 宁夏京成天宝饲料添加剂有限公司 | A method of extracting vanadic anhydride from containing descloizite |
| CN115198116A (en) * | 2022-07-21 | 2022-10-18 | 上海寰泰绿钒科技有限公司 | Method for extracting vanadium from vanadium-containing stone coal |
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