CN113549769B - Method for enriching vanadium in vanadium-containing steel slag - Google Patents
Method for enriching vanadium in vanadium-containing steel slag Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention discloses a method for enriching vanadium in vanadium-containing steel slag, which comprises the steps of crushing and acid leaching the vanadium-containing steel slag, then carrying out primary magnetic separation, grinding the material subjected to the primary magnetic separation and an aggregating agent solution together, washing the material after grinding, then carrying out secondary magnetic separation, smelting the material subjected to the secondary magnetic separation, and casting the material into an iron ingot to finish the enrichment of the vanadium. The method for enriching vanadium in the vanadium-containing steel slag can realize the recycling of the vanadium-containing steel slag, can improve the economic benefit, and can avoid environmental pollution caused by stacking of the steel slag and the like. By adopting the enrichment method, the steel slag with the vanadium content of less than 1 percent can be converted into a metallurgical raw material with the vanadium content of more than 6 percent, and the aim of recycling the steel slag with the vanadium content is fulfilled.
Description
Technical Field
The invention belongs to the technical field of effective utilization of waste resources, and particularly relates to a method for enriching vanadium in vanadium-containing steel slag.
Background
Vanadium is an important strategic resource and is mainly used as an alloy additive in the steel industry. Vanadium resources all over the world are concentrated in China, the vanadium resources of China are concentrated in the Panxi region, a large amount of vanadium-titanium magnetite is stored in the Panxi region, and a certain amount of vanadium can be remained in steel slag after the vanadium-titanium magnetite is subjected to blast furnace ironmaking and converter blowing. At present, steel slag with the vanadium content of more than 2% is well applied, but the steel slag with the vanadium content of less than 2% cannot be reasonably utilized, so that the steel slag is utilized in a manner of recycling iron resources, and the vanadium resources are greatly wasted.
Disclosure of Invention
Aiming at the prior art, the invention provides a method for enriching vanadium in vanadium-containing steel slag, so as to solve the problem that the vanadium-containing steel slag cannot be effectively utilized.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-solution ratio of 1g: 3-5 mL, carrying out acid leaching for 16-24 h at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is acid liquid with the concentration of 0.1-0.5 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 1000-3000 gauss at the speed of 0.5-1 m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g: 1-3 mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; the solute of the aggregating agent solution comprises EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 2-4 g/mL, 0.5-1 g/mL and 0.1-0.5 g/mL;
s4: mixing the chelating material with water according to the material ratio of 1g: 10-15 mL, adjusting the pH of the mixture to 8-10, stirring for 10-20 min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 3000-5000 gauss at the speed of 0.5-1 m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 2-5 cm, then putting the pellets into a smelting furnace, smelting at 1450-1500 ℃ for 2-4 h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
According to the invention, the vanadium-containing steel slag is firstly crushed into particles with smaller particle size, and then the particles are put into the raw material treatment liquid for soaking, wherein the raw material treatment liquid is acid liquid, the acid liquid can react with other oxides except vanadium oxide in the vanadium-containing steel slag and elementary substances such as iron, the elementary substances such as iron and the like and the oxidation contents of the elementary substances are reduced, the content of the vanadium oxide is increased, and the primary enrichment of vanadium is realized. In addition, the acid liquor can destroy the steel slag structure while reducing the contents of elementary substances and oxides of iron, magnesium, aluminum and the like in the vanadium-containing steel slag, and is beneficial to the precipitation of iron and the like in the steel slag.
And (3) placing the treated primary material into a magnetic separator for primary magnetic separation, so that iron in the primary material can be further removed. The material after magnetic separation is mixed with the aggregating agent solution, the EDTA tetrasodium in the aggregating agent solution has good chelating capacity for iron, calcium, magnesium and other ions, and forms chelate with the iron, calcium, magnesium and the like, so that the content of the iron, calcium, magnesium and the like in the steel slag can be reduced; fly ash, talcum powder and bentonite in the aggregating agent solution can increase the friction among materials and improve the ball milling effect. After ball milling and chelating, adding water for washing, wherein the washing liquid is alkaline, dissolving the metal chelate in water under alkaline condition, and filtering to remove the chelate. After ball milling, chelating and water washing, the contents of iron, magnesium, calcium and the like in the steel slag are further reduced, the content of vanadium oxide is improved, and vanadium is further enriched.
After the chelating and washing, the steel slag is continuously put into a magnetic separator for secondary magnetic separation, so that the iron in the steel slag can be adsorbed again, the content of the iron is reduced to the maximum extent, and the vanadium enrichment degree is higher.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the raw material treatment liquid is a citric acid solution with the concentration of 0.2 mol/L.
The citric acid solution is used as the treatment liquid, and the citric acid is an organic acid which is friendly to the environment, so that the problem of environmental pollution can be avoided. And the citric acid is mild in acidity, does not generate violent reaction, and is safer in enrichment process. Meanwhile, citrate can be introduced, which is beneficial to the subsequent chelating.
Further, in S2, the speed of the raw material passing through the magnetic separator is 0.8m/min, and the magnetic field intensity of the magnetic separator is 2000 Gauss.
Further, in S3, the primary magnetic separation material and the aggregating agent solution were mixed at a ratio of 1g to 2 mL.
Further, the concentrations of tetrasodium EDTA, fly ash, talc powder and bentonite in the aggregating agent solution are 3g/mL, 0.8g/mL, 0.6g/mL and 0.4g/mL, respectively.
Further, in S4, the pH value of the mixture is adjusted to 8-9 by sodium carbonate.
The pH value is adjusted by sodium carbonate, so that the chelating material can not be agglomerated, and the subsequent magnetic separation can be favorably carried out.
Further, in S5, the speed of the passing of the chelate material in the magnetic separator is 1m/min, and the magnetic field intensity of the magnetic separator is 4000 Gauss.
Further, the carbonaceous reducing agent is coke powder or graphite powder.
Furthermore, the melting temperature in S6 is 1480 ℃, and the melting time is 3 h.
The invention has the beneficial effects that: the method for enriching vanadium in the vanadium-containing steel slag can realize the recycling of the vanadium-containing steel slag, can improve the economic benefit, and can avoid environmental pollution caused by stacking of the steel slag and the like. By adopting the enrichment method, the steel slag with the vanadium content of less than 1 percent can be converted into a metallurgical raw material with the vanadium content of more than 6 percent, and the aim of recycling the steel slag with the vanadium content is fulfilled.
Detailed Description
The vanadium-containing steel slag used in the invention is converter steel slag obtained by smelting schreyerite by Panzhihua steel group, and the chemical components of the vanadium-containing steel slag are shown in Table 1.
TABLE 1 composition of vanadium-containing steel slag
The following examples are provided to illustrate specific embodiments of the present invention.
Example one
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 4mL, carrying out acid leaching for 20 hours at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is a citric acid solution with the concentration of 0.2 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 2000 gauss at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; solutes of the aggregating agent solution are EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 3g/mL, 0.8g/mL, 0.6g/mL and 0.4 g/mL;
s4: mixing the chelating material with water according to a material ratio of 1g:12mL, adjusting the pH of the mixture to about 9 by using sodium carbonate, stirring for 15min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 4000 gausses at the speed of 0.8m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 3cm, then putting the pellets into a smelting furnace, smelting for 3 hours at the temperature of 1480 ℃, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Example two
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 3mL, carrying out acid leaching for 24 hours at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is a citric acid solution with the concentration of 0.5 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 3000 Gauss at the speed of 1m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:1mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; the solutes of the aggregating agent solution are EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 2g/mL, 0.5g/mL, 1g/mL and 0.1 g/mL;
s4: mixing the chelating material with water according to a material ratio of 1g:10mL, adjusting the pH of the mixture to about 8 by using sodium carbonate, stirring for 20min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 5000 gauss at the speed of 1m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 2cm, then putting the pellets into a smelting furnace, smelting at 1450 ℃ for 4h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
EXAMPLE III
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 5mL, carrying out acid leaching for 16h at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is a citric acid solution with the concentration of 0.1 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 1000 gauss at the speed of 0.5m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:1mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; the solutes of the aggregating agent solution are EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 4g/mL, 1g/mL, 0.5g/mL and 0.5 g/mL;
s4: mixing the chelating material with water according to the material ratio of 1g:15mL, adjusting the pH of the mixture to about 9 by using sodium carbonate, stirring for 10min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 3000 Gauss at the speed of 0.5m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 5cm, then putting the pellets into a smelting furnace, smelting for 2 hours at 1500 ℃, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Comparative example 1
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm to obtain a primary material;
s2: passing the primary material through a magnetic separator with the magnetic field intensity of 2000 Gauss at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; solutes of the aggregating agent solution are EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 3g/mL, 0.8g/mL, 0.6g/mL and 0.4 g/mL;
s4: mixing the chelating material with water according to a material ratio of 1g:12mL, adjusting the pH of the mixture to about 9 by using sodium carbonate, stirring for 15min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 4000 gausses at the speed of 0.8m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 3cm, then putting the pellets into a smelting furnace, smelting at 1480 ℃ for 3h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Comparative example No. two
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 4mL, carrying out acid leaching for 2 hours at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is hydrochloric acid solution with the concentration of 0.2 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 2000 gauss at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; solutes of the aggregating agent solution are EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 3g/mL, 0.8g/mL, 0.6g/mL and 0.4 g/mL;
s4: mixing the chelating material with water according to a material ratio of 1g:12mL, adjusting the pH of the mixture to about 9 by using sodium carbonate, stirring for 15min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 4000 gausses at the speed of 0.8m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 3cm, then putting the pellets into a smelting furnace, smelting at 1480 ℃ for 3h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Comparative example No. three
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 4mL, carrying out acid leaching for 20 hours at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is a citric acid solution with the concentration of 0.2 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 2000 gauss at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with water according to a material-liquid ratio of 1g:2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a ball grinding material;
s4: drying the ball-milled material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 4000 gausses at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a secondary magnetic separation material;
s5: and preparing the secondary magnetic separation material into pellets with the diameter of 3cm, then putting the pellets into a smelting furnace, smelting at 1480 ℃ for 3h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Comparative example No. four
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 4mL, carrying out acid leaching for 20 hours at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is a citric acid solution with the concentration of 0.2 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 2000 gauss at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; the solute of the aggregating agent solution is EDTA tetrasodium, and the concentration of the EDTA tetrasodium is 3 g/mL;
s4: mixing the chelating material with water according to a material ratio of 1g:12mL, adjusting the pH of the mixture to about 9 by using sodium carbonate, stirring for 15min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 4000 gauss at the speed of 0.8m/min, and collecting unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 3cm, then putting the pellets into a smelting furnace, smelting at 1480 ℃ for 3h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Comparative example five
A method for enriching vanadium in vanadium-containing steel slag comprises the following steps:
s1: crushing the vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g to 2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the vanadium-containing steel slag is less than 3mm to obtain a primary material; the raw material treatment liquid is a citric acid solution with the concentration of 0.2 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 2000 gauss at the speed of 0.8m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g:2mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; the solutes of the aggregating agent solution are EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are 3g/mL, 0.8g/mL, 0.6g/mL and 0.4g/mL respectively;
s4: mixing the chelating material with water according to a material ratio of 1g:12mL, adjusting the pH of the mixture to about 9 by using sodium hydroxide, stirring for 15min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 4000 gausses at the speed of 0.8m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 3cm, then putting the pellets into a smelting furnace, smelting at 1480 ℃ for 3h, then discharging molten iron, and casting into iron ingots to finish the enrichment of vanadium.
Analysis of results
The compositions and contents of the ingots obtained in examples 1 to 3 and comparative examples 1 to 5 were measured, respectively, and the results are shown in Table 1.
TABLE 1 cast iron composition and content (wt%)
As can be seen from Table 1, the vanadium-containing pig iron prepared by the enrichment method of the invention has vanadium content of more than 6 percent and higher vanadium content, can be used as a raw material to participate in the smelting of steel, obtains the corresponding steel with vanadium content, and reduces the difficulty of the smelting of the steel.
While the present invention has been described in detail with reference to the embodiments, it should not be construed as limited to the scope of the patent. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (8)
1. The method for enriching vanadium in vanadium-containing steel slag is characterized by comprising the following steps of:
s1: crushing vanadium-containing steel slag into particles with the particle size not more than 3mm, mixing the particles with a raw material treatment solution according to a material-to-liquid ratio of 1g: 3-5 mL, performing acid leaching for 16-24 hours at room temperature, and filtering to obtain a primary material; the raw material treatment liquid is acid liquid with the concentration of 0.1-0.5 mol/L;
s2: drying the primary material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 1000-3000 gauss at the speed of 0.5-1 m/min, and collecting the unadsorbed material to obtain a primary magnetic separation material;
s3: mixing the primary magnetic separation material with an aggregating agent solution according to a material-liquid ratio of 1g: 1-3 mL, and then putting the mixture into a ball mill for ball milling until the particle size of the primary magnetic separation material is less than 1mm to obtain a chelating material; the solute of the aggregating agent solution comprises EDTA tetrasodium, fly ash, talcum powder and bentonite, and the concentrations of the EDTA tetrasodium, the fly ash, the talcum powder and the bentonite are respectively 2-4 g/mL, 0.5-1 g/mL and 0.1-0.5 g/mL;
s4: mixing the chelating material with water according to a feed liquid ratio of 1g: 10-15 mL, adjusting the pH of the mixture to be alkaline, stirring for 10-20 min, and filtering to obtain a base material;
s5: drying the base material until the water content is lower than 5%, then passing through a magnetic separator with the magnetic field intensity of 3000-5000 gauss at the speed of 0.5-1 m/min, and collecting the unadsorbed materials to obtain a secondary magnetic separation material;
s6: and preparing the secondary magnetic separation material into pellets with the diameter of 2-5 cm, then putting the pellets into a smelting furnace, smelting at 1450-1500 ℃ for 2-4 h, then discharging molten iron, and casting into iron ingots to complete the enrichment of vanadium.
2. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: the raw material treatment liquid is a citric acid solution with the concentration of 0.2 mol/L.
3. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: in S2, the passing speed of the primary material in the magnetic separator is 0.8m/min, and the magnetic field intensity of the magnetic separator is 2000 gauss.
4. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: in S3, the primary magnetic separation material is mixed with the aggregating agent solution according to the material-liquid ratio of 1g:2 mL.
5. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: the concentrations of EDTA tetrasodium, fly ash, talcum powder and bentonite in the aggregating agent solution are respectively 3g/mL, 0.8g/mL, 0.6g/mL and 0.4 g/mL.
6. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: and in S4, adjusting the pH value of the mixture to 8-9 by using sodium carbonate.
7. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: in S5, the passing speed of the chelate material in the magnetic separator is 1m/min, and the magnetic field intensity of the magnetic separator is 4000 gauss.
8. The method for enriching vanadium in steel slag containing vanadium according to claim 1, wherein the method comprises the following steps: the smelting temperature in S6 is 1480 ℃, and the smelting time is 3 h.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418385A (en) * | 2008-12-03 | 2009-04-29 | 攀枝花钢城集团有限公司 | Method for extracting vanadium pentoxide from vanadium-containing steel slag |
| CN103131867A (en) * | 2013-03-12 | 2013-06-05 | 昆明理工大学 | Method for extracting vanadium from vanadium containing slag |
| CN103343174A (en) * | 2013-07-11 | 2013-10-09 | 东北大学 | Method for separating titanium, iron, vanadium and calcium from mixed titaniferous slag |
| CN106676275A (en) * | 2016-12-16 | 2017-05-17 | 攀枝花浩恒钒钛科技有限公司 | Vanadium extraction method based on waste steel slag and acid-base property waste water |
| CN106755988A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The System and method for for the treatment of tailings in vanadium extraction and slag |
| WO2020228750A1 (en) * | 2019-05-16 | 2020-11-19 | 成都先进金属材料产业技术研究院有限公司 | Method for producing calcium-containing vanadium slag by adding lime to converter molten iron and leaching method therefor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2542704T3 (en) * | 2010-03-05 | 2014-11-28 | Loesche Gmbh | Preparation method for stainless steel slags and steelmaking slags for recovering metal |
-
2021
- 2021-07-30 CN CN202110874869.9A patent/CN113549769B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418385A (en) * | 2008-12-03 | 2009-04-29 | 攀枝花钢城集团有限公司 | Method for extracting vanadium pentoxide from vanadium-containing steel slag |
| CN103131867A (en) * | 2013-03-12 | 2013-06-05 | 昆明理工大学 | Method for extracting vanadium from vanadium containing slag |
| CN103343174A (en) * | 2013-07-11 | 2013-10-09 | 东北大学 | Method for separating titanium, iron, vanadium and calcium from mixed titaniferous slag |
| CN106676275A (en) * | 2016-12-16 | 2017-05-17 | 攀枝花浩恒钒钛科技有限公司 | Vanadium extraction method based on waste steel slag and acid-base property waste water |
| CN106755988A (en) * | 2017-03-24 | 2017-05-31 | 江苏省冶金设计院有限公司 | The System and method for for the treatment of tailings in vanadium extraction and slag |
| WO2020228750A1 (en) * | 2019-05-16 | 2020-11-19 | 成都先进金属材料产业技术研究院有限公司 | Method for producing calcium-containing vanadium slag by adding lime to converter molten iron and leaching method therefor |
Non-Patent Citations (2)
| Title |
|---|
| 利用新硫酸和钛白废酸直接酸浸含钒钢渣试验研究;李军等;《钢铁钒钛》;20200615(第03期);54-59 * |
| 含钒钢渣资源特性及其提钒的研究进展;叶国华等;《稀有金属》;20100915(第05期);29-34 * |
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