CN110592400A - Novel vanadium extraction and dressing combined method for high-silicon low-calcium stone coal - Google Patents
Novel vanadium extraction and dressing combined method for high-silicon low-calcium stone coal Download PDFInfo
- Publication number
- CN110592400A CN110592400A CN201910753628.1A CN201910753628A CN110592400A CN 110592400 A CN110592400 A CN 110592400A CN 201910753628 A CN201910753628 A CN 201910753628A CN 110592400 A CN110592400 A CN 110592400A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- stone coal
- calcium
- roasting
- rich
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/06—Sulfating roasting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
A novel dressing and smelting combined method for extracting vanadium from high-silicon low-calcium stone coal comprises the following steps of firstly, finely grinding raw ore of the high-silicon low-calcium stone coal to obtain stone coal powder; step two, mixing the stone coal powder, the iron-rich material, the calcium-containing material and the carbon powder according to the ratio of 100: 5-15: 5-15: 5-15, and roasting at 1300 ℃ under the protection of inert gas; thirdly, magnetically separating the roasted material to obtain a magnetic vanadium-rich product and nonmagnetic tailings; step four, mixing the vanadium-rich product and sodium sulfate for sulfurizing roasting; and step five, soaking the vulcanized and roasted sample in water, and then carrying out solid-liquid separation to obtain a vanadium-rich solution and leaching residues. The non-magnetic slag obtained by magnetic separation after reduction roasting can be used as a raw material of cement, and the iron-rich slag obtained by secondary roasting and water leaching can be used as a raw material of reduction roasting, so that internal circulation of iron materials in the vanadium extraction process is realized, and the method has the characteristics of high efficiency, economy, environmental protection and high vanadium leaching rate.
Description
Technical Field
The invention belongs to the technical field of vanadium extraction from stone coal, and particularly relates to a novel selection and metallurgy combined method for extracting vanadium from high-silicon low-calcium stone coal.
Background
The vanadium resources in China are mainly stored in vanadium titano-magnetite and stone coal vanadium ore, the storage capacity of the stone coal is 618.8 hundred million tons, and the stone coal contains V2O5About 1.18 hundred million tons is V in the vanadium titano-magnetite in China2O52.7 times of the reserve. The storage capacity of the stone coal only in the Hunan region is 187.2 million tons, which accounts for about 30 percent of the storage capacity of the whole country, the total economic value exceeds trillion yuan, and the extraction of vanadium from the stone coal becomes an important development direction for utilizing vanadium resources in China. V in stone coal2O5The content is greatly different in each region, generally 0.13-1.00%, less than 0.50% accounts for more than 60%, and more than 1% of rich ore only accounts for 2.8%. Under the current technical and economic conditions, the stone coal has industrial exploitation and utilization value when the vanadium-containing grade reaches more than 0.80-0.85%. The beneficiation method can enrich vanadium in stone coal in individual areas by about 1-2 times, but the universality is not strong, and the stone coal ore in many places has poor beneficiation effect due to extremely fine disseminated particle size of vanadium minerals, so that effective enrichment cannot be obtained. If a new technology is developed, the low-grade stone coal vanadium ore can be efficiently enriched, and the method has great significance for the development of the vanadium ore industry in China.
Disclosure of Invention
In order to overcome the technical defects of the prior art, the invention aims to provide a novel vanadium extraction and selection combined method for high-silicon low-calcium stone coal, which is efficient, environment-friendly and high in leaching rate, so that the enrichment ratio of vanadium in the high-silicon low-calcium stone coal is greatly improved, tailings can be directly used as building materials, iron oxide of a byproduct can be returned to a process system for recycling, no tailings are discharged, and the method is economical and environment-friendly.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel vanadium separation and metallurgy combined method for high-silicon low-calcium stone coal comprises the following steps:
step one, grinding ore
Finely grinding the high-silicon low-calcium type stone coal raw ore to obtain stone coal powder;
step two, mixed sample roasting
Mixing stone coal powder, an iron-rich material, a calcium-containing material and carbon powder according to the proportion of 100: 5-15: 5-15: 5-15, and roasting at 1300 ℃ under the protection of inert gas;
step three, magnetic separation
Magnetically separating the roasted material to obtain a magnetic vanadium-rich product (mainly vanadium iron spinel) and nonmagnetic tailings;
step four, sulfuration roasting
Mixing the vanadium-rich product with sodium sulfate, and carrying out vulcanization roasting;
step five, leaching vanadium with water
And (3) soaking the vulcanized and roasted sample in water, and then carrying out solid-liquid separation to obtain a vanadium-rich solution and leaching slag (iron-rich slag).
Preferably, in the high-silicon low-calcium type stone coal: the content of silicon dioxide is more than 55 wt%, the content of calcium oxide is less than 1.5 wt%, and the content of vanadium pentoxide is more than 0.7 wt%.
Preferably, in the first step, the stone coal raw ore is finely ground until the granularity is less than 200 meshes and accounts for 45-70%.
Preferably, in the second step, the iron-rich material is at least one of iron oxide, iron powder and oolitic hematite.
Preferably, in the second step, the calcium-containing material is at least one of calcium oxide and calcium carbonate.
Preferably, in the second step, the inert gas is one or more of nitrogen and argon, and the roasting time is 2-4 h.
Preferably, in the third step, the magnetic field intensity of the magnetic separation is 0.1-0.5T.
Preferably, in the third step, the grade of vanadium in the magnetic vanadium-rich product is 10-16%.
Preferably, in the third step, the nonmagnetic tailings are directly used as cement raw materials.
Preferably, in the fourth step, the mass ratio of the vanadium-rich product to the sodium sulfate is 100: 25-30.
Preferably, in the fourth step, the temperature of the sulfurizing roasting is 700-.
Preferably, in the fifth step, the leaching solid-liquid ratio of the water leaching is 1: (2-3) g/ml, the temperature is 80-85 ℃, and the time is 1-2 h.
Preferably, in the fifth step, the leached slag (iron-rich slag) is returned to the second step to be recycled as the iron-rich material.
Preferably, after the treatment of the steps one to five, the extraction rate of the vanadium is not lower than 90%.
The technical principle of the invention is as follows:
in the stone coal raw ore of the invention, vanadium exists in a trivalent and quadrivalent state, and is firmly combined in a similar form in a silicon-oxygen tetrahedron structure of the clay ore, although calcium vanadate is generated near 900 ℃ by adding a calcium-containing material, the molar ratio SiO is within 1000-2/(CaO+SiO2)>At 0.5, calcium vanadate and silicon-oxygen tetrahedron are decomposed, calcium oxide and silicon dioxide which hinders the combination of ferrovanadium generate CaSiOx with high melting point, x is 3/4/5, and the temperature interval is also the optimal temperature for the combination of vanadium and the added iron-rich material. When the added calcium-containing material is combined with the silica tetrahedron, the wrapped vanadium is opened, the released vanadium is combined with the iron to generate magnetic ferrovanadium spinel, crystal grains continuously grow during roasting, the ferrovanadium is wrapped by the silica tetrahedron again even if the temperature is reduced, and the vanadium can be enriched by simple ore grinding and magnetic separationAnd (4) collecting.
Fe2O3+C+V2O3+V2O4→FeO+V2O3+VO
CaO+SiO2→CaSiOx(x＝3/4/5)
Fe2O3+FeO+V2O3+VO→FeV2O4+Fe2VO4
FeV2O4+Fe2VO4+Na2SO4→Na3VO4+Fe2O3+SO2+SO3
SO2+SO3+H2O→H2SO3+H2SO4
Aiming at high-silicon low-calcium type stone coal, an iron-rich material, a calcium-containing material and carbon powder are added, a vanadium phase is regulated and controlled by a reduction roasting method, the calcium-containing material is combined with silicon in the stone coal to generate calcium silicate, the phase conversion rate of vanadium is increased, a vanadium-containing mica mineral is converted into a vanadium iron spinel mineral, the vanadium iron spinel is selected by a magnetic separation method, the smelting grade of vanadium is obviously improved, the grade of vanadium in a magnetic vanadium-rich product obtained by magnetic separation is up to 10-16%, and meanwhile, non-magnetic tailings can be directly used as building materials; and then carrying out vulcanization roasting on the vanadium iron spinel ore to convert the vanadium iron spinel ore into soluble vanadate and iron oxide, wherein the iron oxide can be returned to a process system to be used as a raw material for stone coal reduction roasting, and the vanadate can leach vanadium through simple water leaching, so that the balance of iron materials in the whole stone coal vanadium extraction process is realized, and the stone coal zero-tailing discharge is also realized.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention greatly improves the enrichment ratio of vanadium in the high-silicon low-calcium stone coal, and the enrichment ratio can reach more than 20 times.
2. The stone coal in the invention has large magnetic separation and tailing discarding quantity and no pollution, and can be directly used as building materials.
3. The magnetic vanadium-rich product (mainly ferrovanadium spinel) is prepared by a sulfuration roasting method, vanadium is converted into soluble sodium vanadate after roasting, and iron oxide as a byproduct can be returned to a process system for recycling, so that the process is free from tail slag discharge, economic and environment-friendly.
4. The method can ensure that the leaching rate of vanadium in the stone coal reaches more than 90 percent, and is environment-friendly, energy-saving and efficient.
Detailed Description
The invention is further described with reference to specific embodiments, without limiting its scope.
Example 1
The stone coal is obtained from a place in Guizhou, wherein V2O50.74% grade, 3.16% C content, 0.36% Ca content, SiO2Content 59.41%;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 60 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the iron-rich material, the calcium-containing material and the carbon powder according to the mass ratio of 100:8:8: 5;
step three, roasting
Placing the mixed sample into a reduction furnace, and roasting at 1250 ℃ for 3 hours in a nitrogen atmosphere;
step four, magnetic separation
Cooling the roasted material, and then carrying out magnetic separation to obtain a magnetic vanadium-rich product (mainly vanadium iron spinel), wherein the magnetic field intensity is 0.15T; the grade of vanadium in the magnetic vanadium-rich product is 14.61%, and the non-magnetic product can be directly used as a cement raw material;
step five, sulfuration roasting
Mixing the vanadium-rich product and sodium sulfate according to the mass ratio of 100:30, and then carrying out vulcanization roasting at the roasting temperature of 850 ℃ for 2 hours;
step six, water immersion
And (3) soaking the roasted sample in water, wherein the solid-to-liquid ratio of the leaching is 1:3, leaching for 1h at the temperature of 80 ℃;
step seven: solid-liquid separation
Carrying out solid-liquid separation on the hot water leaching slurry to obtain a vanadium-rich solution and leaching residues, wherein the leaching residues are iron-rich residues;
the leaching solution prepared in the embodiment is determined that the leaching rate of vanadium is as follows: 93.28 percent.
Example 2
The stone coal is obtained from somewhere in Shaanxi, where V2O50.9% grade, 9.16% C, 0.23% Ca, SiO2The content is 70.54%;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 70 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the iron-rich material, the calcium-containing material and the carbon powder according to the mass ratio of 100:5:10: 7;
step three, roasting
Placing the mixed sample into a reduction furnace, and roasting at 1100 ℃ for 4 hours under the nitrogen atmosphere;
step four, magnetic separation
Cooling the roasted material, and then carrying out magnetic separation to obtain a magnetic vanadium-rich product (mainly vanadium iron spinel), wherein the magnetic field intensity is 0.4T; the grade of vanadium in the magnetic vanadium-rich product is 12.34%, and the non-magnetic product can be directly used as a cement raw material;
step five, sulfuration roasting
Mixing the vanadium-rich product and sodium sulfate according to the mass ratio of 100:29, and then carrying out vulcanization roasting at the roasting temperature of 850 ℃ for 4 hours;
step six, water immersion
And (3) soaking the roasted sample in water, wherein the solid-to-liquid ratio of the leaching is 1: 2.5, the temperature is 85 ℃, and the leaching time is 2 hours;
step seven: solid-liquid separation
Carrying out solid-liquid separation on the hot water leaching slurry to obtain a vanadium-rich solution and leaching residues, wherein the leaching residues are iron-rich residues;
the leaching solution prepared in the embodiment is determined that the leaching rate of vanadium is as follows: 94.3 percent.
Example 3
The stone coal raw material is taken from a certain stone coal vanadium ore in the lake outlet county of Jiangxi province, wherein V2O5Grade of 1.54%, C content of 2.56%, Ca content of 1.17%, SiO2The content is 56.21 percent;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 50 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the iron-rich material, the calcium-containing material and the carbon powder according to the mass ratio of 100:15:15: 10;
step three, roasting
Placing the mixed sample into a reduction furnace, and roasting for 2.5 hours at 1150 ℃ in a nitrogen atmosphere;
step four, magnetic separation
Cooling the roasted material, and then carrying out magnetic separation to obtain a magnetic vanadium-rich product (mainly vanadium iron spinel), wherein the magnetic field intensity is 0.35T; the grade of vanadium in the magnetic vanadium-rich product is 15.58 percent, and the non-magnetic product can be directly used as a cement raw material;
step five, sulfuration roasting
Mixing the vanadium-rich product and sodium sulfate according to the mass ratio of 100:25, and then carrying out vulcanization roasting at the roasting temperature of 700 ℃ for 4 hours;
step six, water immersion
Soaking the roasted sample in water at the solid-liquid ratio of 1:3 at 82 ℃ for 1.5 h;
step seven: solid-liquid separation
Carrying out solid-liquid separation on the hot water leaching slurry to obtain a vanadium-rich solution and leaching residues, wherein the leaching residues are iron-rich residues;
the leaching solution prepared in the embodiment is determined that the leaching rate of vanadium is as follows: 96.37 percent.
Comparative example 1
The stone coal is obtained from a place in Guizhou, wherein V2O50.74% grade, 3.16% C content, 0.36% Ca content, SiO2Content 59.41%;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 60 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the iron-rich material and the carbon powder according to the mass ratio of 100:8:5, and not adding the calcium-containing material;
step three, roasting
Placing the mixed sample into a reduction furnace, and roasting at 1250 ℃ for 3 hours in a nitrogen atmosphere;
step four, magnetic separation
Cooling the roasted material, and then carrying out magnetic separation to obtain a magnetic vanadium-rich product (mainly vanadium iron spinel), wherein the magnetic field intensity is 0.15T; the grade of vanadium in the magnetic vanadium-rich product is 7.25 percent, and the non-magnetic product can be directly used as a cement raw material;
step five, sulfuration roasting
Mixing the vanadium-rich product and sodium sulfate according to the mass ratio of 100:30, and then carrying out vulcanization roasting at the roasting temperature of 850 ℃ for 2 hours;
step six, water immersion
And (3) soaking the roasted sample in water, wherein the solid-to-liquid ratio of the leaching is 1:3, leaching for 1h at the temperature of 80 ℃;
step seven: solid-liquid separation
Carrying out solid-liquid separation on the hot water leaching slurry to obtain a vanadium-rich solution and leaching residues, wherein the leaching residues are iron-rich residues;
the leaching rate of vanadium of the water leaching solution prepared by the comparative example is determined as follows: 42.58 percent.
Comparative example 2
The stone coal is obtained from a place in Guizhou, wherein V2O50.74% grade, 3.16% C content, 0.36% Ca content, SiO2Content 59.41%;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 60 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the calcium-containing material and the carbon powder according to the mass ratio of 100:8:5, and not adding the iron-rich material;
step three, roasting
Placing the mixed sample into a reduction furnace, and roasting at 1250 ℃ for 3 hours in a nitrogen atmosphere;
step four, magnetic separation
Cooling the roasted material, and then carrying out magnetic separation to obtain a magnetic vanadium-rich product, wherein the magnetic field intensity is 0.15T; there were almost no magnetic products, and non-magnetic insoluble calcium vanadate was detected in the non-magnetic products.
Comparative example 3
The stone coal is obtained from a place in Guizhou, wherein V2O50.74% grade, 3.16% C content, 0.36% Ca content, SiO2Content 59.41%;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 60 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the iron-rich material, the calcium-containing material and the carbon powder according to the mass ratio of 100:8:8: 25;
step three, roasting
Placing the mixed sample into a reduction furnace, and roasting at 1250 ℃ for 3 hours in a nitrogen atmosphere;
step four, magnetic separation
Cooling the roasted material, and then carrying out magnetic separation to obtain a magnetic vanadium-rich product (mainly an iron simple substance), wherein the magnetic field intensity is 0.15T; the grade of vanadium in the magnetic vanadium-rich product is 5.25%, and a vanadium simple substance is detected in the non-magnetic product;
step five, sulfuration roasting
Mixing the vanadium-rich product and sodium sulfate according to the mass ratio of 100:30, and then carrying out vulcanization roasting at the roasting temperature of 850 ℃ for 2 hours;
step six, water immersion
And (3) soaking the roasted sample in water, wherein the solid-to-liquid ratio of the leaching is 1:3, leaching for 1h at the temperature of 80 ℃;
step seven: solid-liquid separation
Carrying out solid-liquid separation on the hot water leaching slurry to obtain vanadium-containing solution and leaching slag, wherein the leaching slag is iron-rich slag; the leaching rate of vanadium of the water leaching solution prepared by the comparative example is determined as follows: 40.75 percent.
Comparative example 4
The stone coal raw material is taken from a certain stone coal vanadium ore in the lake outlet county of Jiangxi province, wherein V2O5Grade of 1.54%, C content of 2.56%, Ca content of 1.17%, SiO2The content is 56.21 percent;
the leaching method described in this embodiment specifically includes the steps of:
step one, grinding ore
Finely grinding the high-silicon low-calcium stone coal raw ore until the granularity is less than 200 meshes and accounts for 50 percent to obtain stone coal powder;
step two, sample mixing
Uniformly mixing the stone coal powder, the iron-rich material, the calcium-containing material and the carbon powder according to the mass ratio of 100:15:15: 10;
step three, roasting
Placing the mixed sample into a reducing furnace, and roasting at 900 ℃ for 2.5 hours in a nitrogen atmosphere;
step four, magnetic separation
And cooling the roasted material, and carrying out magnetic separation to obtain a magnetic product (mainly magnetite), wherein the magnetic field intensity is 0.35T, the vanadium grade in the magnetic vanadium-rich product is 1.67%, vanadium is hardly enriched, and the temperature does not reach the generation temperature of vanadium iron spinel.
Claims (10)
1. A combined method for selecting and smelting novel vanadium extraction from high-silicon low-calcium stone coal is characterized by comprising the following steps:
step one, grinding ore
Finely grinding the high-silicon low-calcium type stone coal raw ore to obtain stone coal powder;
step two, mixed sample roasting
Mixing stone coal powder, an iron-rich material, a calcium-containing material and carbon powder according to the proportion of 100: 5-15: 5-15: 5-15, and roasting at 1300 ℃ under the protection of inert gas;
step three, magnetic separation
Magnetically separating the roasted material to obtain a magnetic vanadium-rich product and nonmagnetic tailings;
step four, sulfuration roasting
Mixing the vanadium-rich product with sodium sulfate, and carrying out vulcanization roasting;
step five, leaching vanadium with water
And (3) soaking the vulcanized and roasted sample in water, and then carrying out solid-liquid separation to obtain a vanadium-rich solution and leaching residues.
2. The combined process of claim 1 for extracting vanadium from high-silicon low-calcium stone coal, which comprises the following steps: among the high-silicon low-calcium type stone coals: the content of silicon dioxide is more than 55 wt%, the content of calcium oxide is less than 1.5 wt%, and the content of vanadium pentoxide is more than 0.7 wt%.
3. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: in the first step, the stone coal raw ore is finely ground until the granularity is less than 200 meshes and accounts for 45-70%.
4. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: in the second step, the iron-rich material is at least one of iron oxide, iron powder and oolitic hematite; the calcium-containing material is at least one of calcium oxide and calcium carbonate.
5. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: in the second step, the inert gas is one or more of nitrogen and argon, and the roasting time is 2-4 h.
6. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: in the third step, the magnetic field intensity of the magnetic separation is 0.1-0.5T; the grade of vanadium in the magnetic vanadium-rich product is 10-16%; the non-magnetic tailings are directly used as a cement raw material.
7. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: in the fourth step, the mass ratio of the vanadium-rich product to the sodium sulfate is 100: 25-30; the temperature of the sulfuration roasting is 700-900 ℃, and the time is 2-4 h.
8. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: in the fifth step, the solid-liquid ratio of the water leaching is 1: (2-3) g/ml, the temperature is 80-85 ℃, and the time is 1-2 h.
9. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: and step five, returning the leached slag to the step two to be used as an iron-rich material for recycling.
10. The integrated process for the beneficiation and metallurgy of vanadium from high-silicon low-calcium type stone coal according to claim 1 or 2, characterized in that: after the treatment of the first step to the fifth step, the extraction rate of vanadium is not lower than 90 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753628.1A CN110592400A (en) | 2019-08-15 | 2019-08-15 | Novel vanadium extraction and dressing combined method for high-silicon low-calcium stone coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910753628.1A CN110592400A (en) | 2019-08-15 | 2019-08-15 | Novel vanadium extraction and dressing combined method for high-silicon low-calcium stone coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110592400A true CN110592400A (en) | 2019-12-20 |
Family
ID=68854337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910753628.1A Pending CN110592400A (en) | 2019-08-15 | 2019-08-15 | Novel vanadium extraction and dressing combined method for high-silicon low-calcium stone coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110592400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817921A (en) * | 2021-07-26 | 2021-12-21 | 中南大学 | Method for extracting valuable metals from stone coal vanadium ore |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296192A (en) * | 2011-09-20 | 2011-12-28 | 武汉工程大学 | Composite roasting additive for extracting vanadium pentoxide from vanadium-containing stone coal and application of composite roasting additive |
| CN104480313A (en) * | 2014-12-04 | 2015-04-01 | 北京科技大学 | Method for extracting vanadium and chromium from solids |
| CN106065435A (en) * | 2016-07-18 | 2016-11-02 | 江苏省冶金设计院有限公司 | A kind of method and system processing vanadium slag |
| CN106381401A (en) * | 2016-12-14 | 2017-02-08 | 安徽工业大学 | Reducing enrichment method for vanadium in vanadium-containing steel slag |
| WO2017148922A1 (en) * | 2016-03-01 | 2017-09-08 | Sms Group Process Technologies Gmbh | Process for the separation of vanadium |
| CN107586947A (en) * | 2017-09-22 | 2018-01-16 | 中南大学 | The selecting smelting combination technique of vanadium, aluminium, potassium, silicon in a kind of synthetical recovery siliceous shale containing vanadium |
| CN107641723A (en) * | 2017-09-13 | 2018-01-30 | 北京科技大学 | Regulate and control the method for vanadium enrichment phase magnetic and magnetic separation separation vanadium enrichment phase in Rock coal containing alum |
-
2019
- 2019-08-15 CN CN201910753628.1A patent/CN110592400A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296192A (en) * | 2011-09-20 | 2011-12-28 | 武汉工程大学 | Composite roasting additive for extracting vanadium pentoxide from vanadium-containing stone coal and application of composite roasting additive |
| CN104480313A (en) * | 2014-12-04 | 2015-04-01 | 北京科技大学 | Method for extracting vanadium and chromium from solids |
| WO2017148922A1 (en) * | 2016-03-01 | 2017-09-08 | Sms Group Process Technologies Gmbh | Process for the separation of vanadium |
| CN106065435A (en) * | 2016-07-18 | 2016-11-02 | 江苏省冶金设计院有限公司 | A kind of method and system processing vanadium slag |
| CN106381401A (en) * | 2016-12-14 | 2017-02-08 | 安徽工业大学 | Reducing enrichment method for vanadium in vanadium-containing steel slag |
| CN107641723A (en) * | 2017-09-13 | 2018-01-30 | 北京科技大学 | Regulate and control the method for vanadium enrichment phase magnetic and magnetic separation separation vanadium enrichment phase in Rock coal containing alum |
| CN107586947A (en) * | 2017-09-22 | 2018-01-16 | 中南大学 | The selecting smelting combination technique of vanadium, aluminium, potassium, silicon in a kind of synthetical recovery siliceous shale containing vanadium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817921A (en) * | 2021-07-26 | 2021-12-21 | 中南大学 | Method for extracting valuable metals from stone coal vanadium ore |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102168156B (en) | Iron and aluminum melting separation method for complicated and hard-dressing aluminum and iron intergrowth ore | |
| CN103805726B (en) | A kind of method using rotary hearth furnace pearl iron process to fully utilize iron red mud | |
| WO2019071796A1 (en) | Method for recovering valuable components from mixed slag containing nickel and iron | |
| CN102260787A (en) | Method for comprehensively recovering iron from copper smelting slag flotation tailings | |
| CN101787407B (en) | Method for reducing and extracting copper smelting waste slag through microwave carbon heating | |
| CN102277462A (en) | Method for comprehensive utilization of vanadium titanomagnetite | |
| CN102839278B (en) | Method for extracting iron from iron mine tailings through strong magnetic, pre-concentration deep reduction | |
| CN112662896B (en) | Method for preparing titanium-rich material from titanium ore | |
| CN110002421B (en) | Method for preparing battery-grade iron phosphate by using sulfuric acid residues | |
| CN109880999B (en) | Method for recovering iron in copper slag after modification of composite additive and application | |
| WO2019071787A1 (en) | Method for recovering valuable components from smelting slag containing nickel | |
| CN107082429A (en) | A kind of method that utilization Dust of Iron And Steel Works prepares cementite | |
| CN100584971C (en) | Nickel oxide ore reconcentration process | |
| CN113979655B (en) | Modified steel slag based on steel dust mud and red mud, and preparation method and application thereof | |
| CN105238893B (en) | A kind of method that solid waste containing vanadium sinters blast furnace ironmaking with ore deposit | |
| CN104846189B (en) | Fluidized roasting separation method for siderite-containing mixed iron ore | |
| CN107557567B (en) | A kind of method of high-phosphorus iron ore dephosphorization | |
| CN116239401B (en) | Liquid steel slag treatment method for steel mill | |
| CN110592400A (en) | Novel vanadium extraction and dressing combined method for high-silicon low-calcium stone coal | |
| CN105296747B (en) | A kind of method of comprehensive utilization of low-grade complex Ferromanganese Ore | |
| CN103740929A (en) | Additive and method for reinforcing separation of manganese and iron through magnetic roasting-magnetic separation of high-iron manganese oxide ore | |
| CN108796236B (en) | Method for comprehensively recycling valuable components in copper slag | |
| CN101705353B (en) | Multi-functional composite additive for intensifying direct reduction of low-grade superfine hematite | |
| CN113215388B (en) | Method for converting niobium minerals in niobium rough concentrate into niobium-calcium ore and producing niobium concentrate | |
| CN108707746A (en) | The method that two-stage roasting-magnetic separation-leaching high-phosphor oolitic hematite carries iron drop phosphorus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |