CN112551579B - Preparation method of barium vanadate hydrate based on vanadium-rich liquid - Google Patents

Preparation method of barium vanadate hydrate based on vanadium-rich liquid Download PDF

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CN112551579B
CN112551579B CN202110002262.1A CN202110002262A CN112551579B CN 112551579 B CN112551579 B CN 112551579B CN 202110002262 A CN202110002262 A CN 202110002262A CN 112551579 B CN112551579 B CN 112551579B
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barium
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CN112551579A (en
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刘涛
潘东
张一敏
刘红
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Wuhan University of Science and Engineering WUSE
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00—Compounds of vanadium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract

The invention relates to a preparation method of barium vanadate hydrate based on vanadium-rich liquid. The technical proposal is as follows: adding a pH regulator into the vanadium-rich liquid, and regulating the pH to 9-10 to obtain vanadium-rich liquid regulating liquid; adding magnesium salt into the vanadium-rich liquid regulating liquid according to the molar ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid of (2-4) to 1, stirring, and carrying out solid-liquid separation to obtain a solution I; adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of (4-8) to 1, stirring, and carrying out solid-liquid separation to obtain ammonium metavanadate; dissolving ammonium metavanadate in deionized water, preserving heat for 0.5-2 hours at 90-95 ℃, and cooling to room temperature to obtain solution II; adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of (0.5-1) to 1, stirring, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The invention has low preparation cost, low preparation temperature, short preparation time and easy industrialized production; the prepared product has high purity and uniform appearance.

Description

Preparation method of barium vanadate hydrate based on vanadium-rich liquid
Technical Field
The invention belongs to the technical field of barium vanadate hydrate. In particular to a preparation method of barium vanadate hydrate based on vanadium-rich liquid.
Background
Barium vanadate hydrate Ba (VO) 3 ) 2 ·H 2 O is a material with special optical, magnetic and electric properties, and can be used as a nonlinear optical crystal to widen the wavelength range of laser.
Currently, barium vanadate hydrate is mainly prepared by V 2 O 5 And barium salt as raw material, and synthesizing by high-temperature solid-phase reaction or hydrothermal reaction.
Ulla Gro Nielsen et al (NIELSEN U G, JAKOBSEN H J, SKIBSTED J, characacterization of Divalent Metal Metavanadates by V Magic-Angle Spinning NMR Spectroscopy of the Central and Satellite Transitions [ J)]Inorganic Chemistry,2000,39 (10): 2135-45) at V 2 O 5 And BaCO 3 The Ba (VO) is obtained by solid phase reaction for 24 hours at 700 ℃ while the Ba is used as a raw material and is uniformly mixed and ground 3 ) 2 But V used in this method 2 O 5 The cost of raw materials is high, the reaction temperature is high and the solid phase reaction speed is slow.
Shifting Pang et al (PANG S, LI G, JIANG L, et al, hydrothermal synthesis of Ba (VO 3) 2.H2O nanobels [ J ]]Materials Letters,2006,60 (23): 2900-2.) at V 2 O 5 、Ba(OH) 2 ·8H 2 O is taken as raw material, hexadecyl trimethyl chloride is taken as raw materialAmmonium chloride is used as a surfactant, and the nano band-shaped Ba (VO) is obtained though the hydrothermal reaction is carried out for 24 hours at 180 DEG C 3 ) 2 ·H 2 O, but V used in the method 2 O 5 The cost of raw materials is high, and the reaction time is long.
Preparation method and application of barium vanadate hydrate nonlinear optical crystal (CN 107299395A) patent technology, and NH is adopted 4 VO 3 、V 2 O 5 For vanadium source, use Ba (OH) 2 ·8H 2 O、BaCO 3 、Ba(NO 3 ) 2 、BaC 2 O 4 、(CH 3 COO) 2 Ba and the like are used as barium sources, phosphoric acid is used as mineralizer, and the reaction is carried out for 3 to 5 days under the hydrothermal condition of 180 to 200 ℃ to synthesize 0.25mmX0.15mmX0.1mm Ba (VO) 3 ) 2 ·H 2 O single crystal, although the method prepares micron-sized Ba (VO 3 ) 2 ·H 2 O, but NH used 4 VO 3 、V 2 O 5 The raw material cost is high, and the reaction time is too long.
In summary, the conventional Ba (VO 3 ) 2 ·H 2 The preparation method of O has the defects of higher preparation cost, higher preparation temperature, overlong preparation time and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and aims to provide a preparation method of barium vanadate hydrate based on vanadium-rich liquid, which has the advantages of low preparation cost, low preparation temperature, short preparation time and high purity and uniform morphology and is used for preparing Ba, and is based on vanadium-rich liquid in industrial production 3 (VO 4 ) 2 High quality raw materials of low-dielectric high-frequency microwave dielectric materials.
In order to achieve the above purpose, the technical scheme adopted by the invention comprises the following specific steps:
step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 9-10 to obtain vanadium-rich liquid regulating liquid;
and step two, adding magnesium salt into the vanadium-rich liquid regulating liquid according to the molar ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid being (2-4) to 1, stirring for 0.5-1 hour, and carrying out solid-liquid separation to obtain a solution I.
And thirdly, adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of (4-8) to 1, stirring for 2-4 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate.
And fourthly, dissolving the ammonium metavanadate in deionized water, preserving heat for 0.5-2 hours at the temperature of 90-95 ℃, and cooling to room temperature to obtain a solution II.
And fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of (0.5-1) to 1, stirring for 0.5-1 hour, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The chemical formula of the barium vanadate hydrate is Ba (VO 3 ) 2 ·H 2 O。
The vanadium-rich liquid is a product of wet extraction, purification and enrichment, ammonium salt vanadium precipitation and purification and enrichment in high-temperature calcination of vanadium-containing substances; the vanadium-rich liquid comprises the following components: vanadium concentration is 5-50 g/L, sulfate radical concentration is 5-400 g/L, na concentration is 5-200 g/L, fe concentration is less than or equal to 0.05g/L, al concentration is less than or equal to 0.05g/L, P concentration is 0.3-0.6 g/L, si concentration is 0.1-0.2 g/L; the content of pentavalent vanadium in the total vanadium is >90wt%.
The pH regulator is one of sulfuric acid, nitric acid, hydrochloric acid and sodium hydroxide.
The magnesium salt is one of magnesium chloride, magnesium sulfate and magnesium nitrate.
The purity of the ammonium chloride is industrial grade.
The barium salt is one of barium chloride, barium nitrate and barium hydroxide.
The total impurities in the vanadium-rich liquid regulating liquid are Na, fe, al, P and Si in the vanadium-rich liquid.
By adopting the technical scheme, compared with the prior art, the invention has the following positive effects:
the vanadium-rich liquid adopted by the invention is a product purified and enriched in the wet extraction, purification and enrichment, ammonium salt vanadium precipitation and high-temperature calcination of vanadium-containing substances, and V adopted in the prior art 2 O 5 Is a product obtained by wet extraction, purification and enrichment, ammonium salt vanadium precipitation and high-temperature calcination in the high-temperature calcination process,as the intermediate process links are reduced, the preparation cost of the barium vanadate hydrate based on the vanadium-rich liquid is obviously reduced.
The method takes the purified vanadium-rich liquid as the main raw material, and the barium salt is added and then stirred and reacts for 0.5 to 1 hour under the normal temperature condition, so that the barium vanadate hydrate based on the vanadium-rich liquid is prepared in a shorter time, the preparation process is simple, the preparation period is short, and the industrial production is easy.
According to the invention, from the vanadium-rich liquid, through simple purification and impurity removal and barium salt precipitation reaction, micron-sized barium vanadate hydrate based on the vanadium-rich liquid is synthesized in a short time under normal temperature conditions, and the prepared barium vanadate hydrate is micron particles with the granularity of less than 10 mu m, and has high purity and uniform morphology.
Therefore, the invention has the characteristics of low preparation cost, low preparation temperature, short preparation time and easy realization of industrial production, and the prepared barium vanadate hydrate based on the vanadium-rich liquid has high purity and uniform morphology and is used for preparing Ba 3 (VO 4 ) 2 High quality raw materials of low-dielectric high-frequency microwave dielectric materials.
Drawings
FIG. 1 is an X-ray diffraction pattern of barium vanadate hydrate based on vanadium-rich liquid prepared by the invention;
FIG. 2 is a scanning electron microscope image of the barium vanadate hydrate shown in FIG. 1 based on the vanadium rich liquid.
Detailed Description
The invention is further described in connection with the accompanying drawings and detailed description, without limiting the scope of protection:
a preparation method of barium vanadate hydrate based on vanadium-rich liquid. The preparation method of the specific embodiment comprises the following specific steps:
step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 9-10 to obtain a vanadium-rich liquid regulating liquid.
And step two, adding magnesium salt into the vanadium-rich liquid regulating liquid according to the molar ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid being (2-4) to 1, stirring for 0.5-1 hour, and carrying out solid-liquid separation to obtain a solution I.
And thirdly, adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of (4-8) to 1, stirring for 2-4 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate.
And fourthly, dissolving the ammonium metavanadate in deionized water, preserving heat for 0.5-2 hours at the temperature of 90-95 ℃, and cooling to room temperature to obtain a solution II.
And fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of (0.5-1) to 1, stirring for 0.5-1 hour, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The chemical formula of the barium vanadate hydrate is Ba (VO 3 ) 2 ·H 2 O。
The vanadium-rich liquid comprises the following components: vanadium concentration is 5-50 g/L, sulfate radical concentration is 5-400 g/L, na concentration is 5-200 g/L, fe concentration is less than or equal to 0.05g/L, al concentration is less than or equal to 0.05g/L, P concentration is 0.3-0.6 g/L, si concentration is 0.1-0.2 g/L; the content of pentavalent vanadium in the total vanadium is >90wt%.
The pH regulator is one of sulfuric acid, nitric acid, hydrochloric acid and sodium hydroxide.
The magnesium salt is one of magnesium chloride, magnesium sulfate and magnesium nitrate.
The barium salt is one of barium chloride, barium nitrate and barium hydroxide.
In this embodiment:
the purity of the ammonium chloride is industrial grade;
the total impurities in the vanadium-rich liquid regulating liquid are five types of Na, fe, al, P and Si in the vanadium-rich liquid;
the vanadium-rich liquid is a product of wet extraction, purification and enrichment, ammonium salt vanadium precipitation and purification and enrichment in high-temperature calcination of vanadium-containing substances.
The embodiments are not described in detail.
Example 1
A preparation method of barium vanadate hydrate based on vanadium-rich liquid. The preparation method of the specific embodiment comprises the following specific steps:
and step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 9 to obtain a vanadium-rich liquid regulating liquid.
And step two, adding magnesium salt into the vanadium-rich liquid regulating liquid according to the mol ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid being 2:1, stirring for 0.5 hour, and carrying out solid-liquid separation to obtain a solution I.
And thirdly, adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of 4:1, stirring for 2 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate.
And fourthly, dissolving the ammonium metavanadate in deionized water, preserving heat for 0.5 hour at the temperature of 90 ℃, and cooling to room temperature to obtain a solution II.
And fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of 0.5:1, stirring for 0.5 hour, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The chemical formula of the barium vanadate hydrate is Ba (VO 3 ) 2 ·H 2 O。
The vanadium-rich liquid comprises the following components: vanadium concentration is 5.02g/L, sulfate radical concentration is 5.03g/L, na concentration is 4.99g/L, fe concentration is 0.01g/L, al concentration is 0.012g/L, P concentration is 0.3g/L, si concentration is 0.1g/L; the content of pentavalent vanadium in the total vanadium was 90.05wt%.
The pH regulator is sulfuric acid.
The magnesium salt is magnesium chloride.
The barium salt is barium chloride.
The purity of the ammonium chloride was 98.
Example 2
A preparation method of barium vanadate hydrate based on vanadium-rich liquid. The preparation method of the specific embodiment comprises the following specific steps:
and step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 9.3 to obtain the vanadium-rich liquid regulating liquid.
And step two, adding magnesium salt into the vanadium-rich liquid regulating liquid according to the mol ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid being 2.5:1, stirring for 0.6 hour, and carrying out solid-liquid separation to obtain a solution I.
And thirdly, adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of 5:1, stirring for 2.5 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate.
And fourthly, dissolving the ammonium metavanadate in deionized water, preserving heat for 1 hour at 92 ℃, and cooling to room temperature to obtain a solution II.
And fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of 0.7:1, stirring for 0.7 hour, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The chemical formula of the barium vanadate hydrate is Ba (VO 3 ) 2 ·H 2 O。
The vanadium-rich liquid comprises the following components: vanadium concentration is 20.05g/L, sulfate radical concentration is 150.06g/L, na concentration is 80.09g/L, fe concentration is 0.02g/L, al concentration is 0.019g/L, P concentration is 0.4g/L, si concentration is 0.14g/L; the content of pentavalent vanadium in the total vanadium was 92wt%.
The pH regulator is nitric acid.
The magnesium salt is magnesium sulfate.
The barium salt is barium nitrate.
The purity of the ammonium chloride was 98.5.
Example 3
A preparation method of barium vanadate hydrate based on vanadium-rich liquid. The preparation method of the specific embodiment comprises the following specific steps:
and step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 9.6 to obtain the vanadium-rich liquid regulating liquid.
And step two, adding magnesium salt into the vanadium-rich liquid regulating liquid according to the mol ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid being 3.5:1, stirring for 0.8 hour, and carrying out solid-liquid separation to obtain a solution I.
And thirdly, adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of 7:1, stirring for 3.5 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate.
And fourthly, dissolving the ammonium metavanadate in deionized water, preserving heat for 1.5 hours at 93 ℃, and cooling to room temperature to obtain a solution II.
And fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of 0.8:1, stirring for 0.8 hour, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The chemical formula of the barium vanadate hydrate is Ba (VO 3 ) 2 ·H 2 O。
The vanadium-rich liquid comprises the following components: vanadium concentration is 40.15g/L, sulfate radical concentration is 300.80g/L, na concentration is 150.15g/L, fe concentration is 0.04g/L, al concentration is 0.035g/L, P concentration is 0.5g/L, si concentration is 0.18g/L; the content of pentavalent vanadium in the total vanadium was 94wt%.
The pH regulator is hydrochloric acid.
The magnesium salt is magnesium nitrate.
The barium salt is barium hydroxide.
The purity of the ammonium chloride was 99.
Example 4
A preparation method of barium vanadate hydrate based on vanadium-rich liquid. The preparation method of the specific embodiment comprises the following specific steps:
and step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 10 to obtain the vanadium-rich liquid regulating liquid.
And step two, adding magnesium salt into the vanadium-rich liquid regulating liquid according to the molar ratio of magnesium ions to total impurity ions in the vanadium-rich liquid regulating liquid being 4:1, stirring for 1 hour, and carrying out solid-liquid separation to obtain a solution I.
And thirdly, adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of 8:1, stirring for 4 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate.
And fourthly, dissolving the ammonium metavanadate in deionized water, preserving heat for 2 hours at the temperature of 95 ℃, and cooling to room temperature to obtain a solution II.
And fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of 1:1, stirring for 1 hour, and carrying out solid-liquid separation to obtain the barium vanadate hydrate based on the vanadium-rich solution. The chemical formula of the barium vanadate hydrate is Ba (VO 3 ) 2 ·H 2 O。
The vanadium-rich liquid comprises the following components: the concentration of vanadium is 49.85g/L, the concentration of sulfate radical is 399.87g/L, the concentration of Na is 199.68g/L, the concentration of Fe is 0.05g/L, the concentration of Al is 0.05g/L, the concentration of P is 0.6g/L, and the concentration of Si is 0.2g/L; the content of pentavalent vanadium in the total vanadium is more than 96wt%.
The pH regulator is sodium hydroxide.
The magnesium salt is magnesium nitrate.
The barium salt is barium chloride.
The purity of the ammonium chloride was 99.5.
Compared with the prior art, the specific embodiment has the following positive effects:
the vanadium-rich liquid adopted in the specific embodiment is a product purified and enriched in the wet extraction, purification and enrichment, ammonium salt vanadium precipitation and high-temperature calcination of vanadium-containing substances, and V adopted in the prior art 2 O 5 The preparation method is characterized in that the preparation method reduces the preparation cost of the barium vanadate hydrate based on the vanadium-rich liquid due to the reduction of intermediate process links for the wet extraction, purification and enrichment, ammonium salt vanadium precipitation and high-temperature calcination of the high-temperature calcination product.
The method takes the purified vanadium-rich liquid as a main raw material, and the barium salt is added and then stirred and reacted for 0.5 to 1 hour under the normal temperature condition, so that the barium vanadate hydrate based on the vanadium-rich liquid is prepared in a shorter time, the preparation process is simple, the preparation period is short, and the industrial production is easy.
The specific embodiment starts from vanadium-rich liquid, and micron-sized barium vanadate hydrate based on the vanadium-rich liquid is prepared by simple purification, impurity removal and barium salt precipitation reaction in a short time under normal temperature, and the granularity of the prepared product is less than 10 mu m.
The barium vanadate hydrate based on the vanadium-rich liquid prepared in the specific embodiment is shown in the accompanying drawings: FIG. 1 is an X-ray diffraction pattern of barium vanadate hydrate based on vanadium rich solution prepared in example 2; FIG. 2 is a scanning electron microscope image of the barium vanadate hydrate shown in FIG. 1 based on the vanadium rich liquid. As can be seen from fig. 1: the material has similar crystal structure corresponding to the X-ray diffraction peak of barium vanadate hydrate (PDF No. 78-1978), and has no other impurity peak, which shows that the purity of the prepared product is higher. As can be seen from fig. 2: the prepared product is micron particles with the granularity of less than 10 mu m, and the morphology of the particles is uniform.
Therefore, the specific embodiment has the characteristics of low preparation cost, low preparation temperature, short preparation time and easiness in industrial production, and the prepared barium vanadate hydrate based on the vanadium-rich liquid has high purity and uniform morphology and is used for preparing Ba 3 (VO 4 ) 2 High quality raw materials of low-dielectric high-frequency microwave dielectric materials.

Claims (5)

1. The preparation method of the hydrated barium vanadate based on the vanadium-rich liquid is characterized by comprising the following specific steps of:
step one, adding a pH regulator into the vanadium-rich liquid, and regulating the pH of the vanadium-rich liquid to 9-10 to obtain vanadium-rich liquid regulating liquid;
adding magnesium salt into the vanadium-rich liquid adjusting liquid according to the molar ratio of magnesium ions to total impurity ions in the vanadium-rich liquid adjusting liquid being (2-4) to 1, stirring for 0.5-1 hour, and carrying out solid-liquid separation to obtain a solution I;
adding ammonium chloride into the solution I according to the molar ratio of ammonium ions to vanadium ions in the solution I of (4-8) to 1, stirring for 2-4 hours, and carrying out solid-liquid separation to obtain ammonium metavanadate;
step four, dissolving the ammonium metavanadate in deionized water, preserving heat for 0.5-2 hours at the temperature of 90-95 ℃, and cooling to room temperature to obtain a solution II;
fifthly, adding barium salt into the solution II according to the molar ratio of the barium ion to the vanadium ion in the solution II of (0.5-1) to 1, stirring for 0.5-1 hour, and carrying out solid-liquid separation to obtain barium vanadate hydrate based on vanadium-rich liquid;
the vanadium-rich liquid is a product of wet extraction, purification and enrichment, ammonium salt vanadium precipitation and purification and enrichment in high-temperature calcination of vanadium-containing substances; the vanadium-rich liquid comprises the following components: vanadium concentration is 5-50 g/L, sulfate radical concentration is 5-400 g/L, na concentration is 5-200 g/L, fe concentration is less than or equal to 0.05g/L, al concentration is less than or equal to 0.05g/L, P concentration is 0.3-0.6 g/L, si concentration is 0.1-0.2 g/L; the content of pentavalent vanadium in the total vanadium is >90wt%.
2. The method for preparing the barium vanadate hydrate based on the vanadium-rich liquid according to claim 1, wherein the pH regulator is one of sulfuric acid, nitric acid, hydrochloric acid and sodium hydroxide.
3. The method for preparing the barium vanadate hydrate based on the vanadium-rich liquid according to claim 1, wherein the magnesium salt is one of magnesium chloride, magnesium sulfate and magnesium nitrate.
4. The method for preparing barium vanadate hydrate based on vanadium rich solution according to claim 1, wherein the purity of the ammonium chloride is industrial grade.
5. The method for preparing barium vanadate hydrate based on vanadium-rich liquid according to claim 1, wherein the barium salt is one of barium chloride, barium nitrate and barium hydroxide.
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