CN110760203A - Preparation process of novel bismuth temperature-resistant environment-friendly pigment - Google Patents
Preparation process of novel bismuth temperature-resistant environment-friendly pigment Download PDFInfo
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- CN110760203A CN110760203A CN201910881275.3A CN201910881275A CN110760203A CN 110760203 A CN110760203 A CN 110760203A CN 201910881275 A CN201910881275 A CN 201910881275A CN 110760203 A CN110760203 A CN 110760203A
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- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 86
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000000049 pigment Substances 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 43
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 239000007787 solid Substances 0.000 claims abstract description 24
- 239000012153 distilled water Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 16
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002243 precursor Substances 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 12
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 6
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 6
- 238000004806 packaging method and process Methods 0.000 claims description 30
- 238000012216 screening Methods 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 238000009461 vacuum packaging Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000001052 yellow pigment Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0009—Pigments for ceramics
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0006—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black containing bismuth and vanadium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/32—Thermal properties
- C01P2006/37—Stability against thermal decomposition
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Abstract
The invention discloses a preparation process of a novel bismuth temperature-resistant environment-friendly pigment, which comprises the following steps: s1, weighing ammonium metavanadate solid at room temperature, adding distilled water and NaOH, and strongly stirring for 15 minutes to obtain a solution I; s2, weighing bismuth nitrate solid according to the molar ratio of the bismuth nitrate solid to vanadium element, and adding concentrated nitric acid to dissolve the bismuth nitrate solid to obtain a bismuth nitrate solution II; s3, adding the solution I into the solution II, and stirring for 1 hour to obtain a bismuth vanadate pigment precursor; s4, dissolving the bismuth vanadate pigment precursor obtained in the second step in distilled water, and adding silicate and ammonia water to obtain a coated pigment; s5, after the reaction is finished, washing the prepared product with distilled water and ethanol, drying, calcining and crushing to obtain the bismuth ceramic pigment.
Description
Technical Field
The invention relates to the technical field of pigment production, in particular to a preparation process of a novel bismuth temperature-resistant environment-friendly pigment.
Background
Bismuth is silver white to pink metal, is brittle and easy to crush, and has stable chemical properties. Bismuth exists in the form of free metal and mineral in nature, previously bismuth is considered as a stable element with the largest relative atomic mass, but in 2003, bismuth is found to have extremely weak radioactivity, bismuth vanadate is internationally also called 184 yellow, the success of German Pasteur production and research and development is firstly used for marking the birth of a new generation of environment-friendly materials, the bismuth vanadate is a bright yellow inorganic chemical, does not contain heavy metal elements harmful to human bodies, is an environment-friendly low-carbon metal oxide substance, has multiple crystal phases, and the bismuth vanadate with different crystal phases has different properties and applications;
but the prior production process for preparing the bismuth ceramic pigment has the problems of complex process, easy environmental pollution, slow reaction rate, complex operation, high cost and poor pigment performance.
Disclosure of Invention
The invention provides a preparation process of a novel bismuth temperature-resistant environment-friendly pigment, which can effectively solve the problems that the existing production process for preparing bismuth ceramic pigment in the background art is complex in process, easy to cause environmental pollution, slow in reaction rate, complex in operation, high in cost and not superior in pigment performance.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation process of a novel bismuth temperature-resistant environment-friendly pigment comprises the following steps:
s1, weighing ammonium metavanadate solid at room temperature, adding distilled water and NaOH, and strongly stirring for 15 minutes to obtain a solution I;
s2, weighing bismuth nitrate solid according to the molar ratio of the bismuth nitrate solid to vanadium element, and adding concentrated nitric acid to dissolve the bismuth nitrate solid to obtain a bismuth nitrate solution II;
s3, adding the solution I into the solution II, and stirring for 1 hour to obtain a bismuth vanadate pigment precursor;
s4, dissolving the bismuth vanadate pigment precursor obtained in the second step in distilled water, adding silicate and ammonia water, and reacting at room temperature to obtain a coated pigment;
and S5, after the reaction is finished, washing the prepared product with distilled water and ethanol respectively, drying, calcining and crushing to obtain the bismuth ceramic pigment.
According to the technical scheme, the mole number of NaOH in the step S1 is 2-6 times of that of vanadium.
According to the technical scheme, in the step S3, the stirring environment is pH 3-8, and the temperature is 50-95 ℃.
According to the technical scheme, in the step S4, the reaction time is 1-5 hours at room temperature, and 10% -15% of silicate powder is added.
According to the technical scheme, in the step S5, washing is carried out for 2-3 times through distilled water and ethanol, drying is carried out for 4 hours at 105 ℃, and calcining is carried out for 4-6 hours at 600 ℃.
According to the technical scheme, concentrated nitric acid in the step S2 is added into bismuth nitrate to prevent the bismuth nitrate from being hydrolyzed;
the dissolution steps are as follows:
a1, putting concentrated nitric acid into a reactor, slowly adding bismuth nitrate, and slowly stirring;
a2, after stirring is completed and solution is produced, cooling the bismuth nitrate solution II in the reactor to room temperature;
the stirring speed in the step A2 is 30-50 r/min.
According to the above technical solution, the bismuth ceramic pigment in step S5 further includes the following steps:
b1, screening the bismuth ceramic pigment through a screening machine, packaging the qualified bismuth ceramic pigment, and grinding the unqualified bismuth ceramic pigment;
b2, detecting the qualified bismuth ceramic pigment, and packaging after detection is finished;
and B3, packaging, placing, and performing sampling inspection.
According to the technical scheme, the screen used for screening by the screening machine in the step B1 is 500-600 meshes, the unqualified bismuth ceramic pigment is ground by a grinding machine, and impurities in the bismuth ceramic pigment are removed in the grinding process.
According to the technical scheme, the detection items in the step B2 are color, temperature resistance, oil absorption, light resistance, heat resistance, acid resistance and dispersibility;
and B2, packaging by a packaging machine, removing air in packaging, and performing vacuum packaging.
According to the technical scheme, the sampling rate in the step B3 is 0.2-0.5%;
the storage environment in the step B2 is room temperature and is far away from acidic and alkaline substances.
Compared with the prior art, the invention has the beneficial effects that: the bismuth vanadate yellow pigment has a scientific and reasonable structure, is safe and convenient to use, has innovation points that silicic acid generated by a silicate polymerization reaction is coated on the surface of bismuth vanadate, and can resist high temperature of about 1000 ℃ due to extremely strong inertia of silicon dioxide, and the pigment is still bright in color and loose in structure after being calcined at 1000 ℃.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic flow diagram of the production process of the present invention;
FIG. 2 is a flowchart illustrating step S2 according to the present invention;
fig. 3 is a flowchart illustrating step S4 according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1: as shown in figures 1-3, the invention provides a technical scheme of a preparation process of a novel bismuth temperature-resistant environment-friendly pigment, which comprises the following steps:
s1, weighing ammonium metavanadate solid at room temperature, adding distilled water and NaOH, and strongly stirring for 15 minutes to obtain a solution I;
s2, weighing bismuth nitrate solid according to the molar ratio of the bismuth nitrate solid to vanadium element, and adding concentrated nitric acid to dissolve the bismuth nitrate solid to obtain a bismuth nitrate solution II;
s3, adding the solution I into the solution II, and stirring for 1 hour to obtain a bismuth vanadate pigment precursor;
s4, dissolving the bismuth vanadate pigment precursor obtained in the second step in distilled water, adding silicate and ammonia water, and reacting at room temperature to obtain a coated pigment;
and S5, after the reaction is finished, washing the prepared product with distilled water and ethanol respectively, drying, calcining and crushing to obtain the bismuth ceramic pigment.
According to the technical scheme, the mol number of NaOH in the step S1 is 5 times of that of vanadium element.
According to the above technical scheme, in step S3, the stirring environment is PH 5 and the temperature is 70 ℃.
According to the above technical scheme, the reaction time in step S4 is 1 hour at room temperature, and 10% silicate powder is added.
According to the above technical scheme, washing is carried out for 2 times by distilled water and ethanol in the step S5, drying is carried out for 4 hours at 105 ℃, and calcining is carried out for 6 hours at 600 ℃.
According to the technical scheme, concentrated nitric acid in the step S2 is added into bismuth nitrate to prevent the bismuth nitrate from being hydrolyzed;
the dissolution steps are as follows:
a1, putting concentrated nitric acid into a reactor, slowly adding bismuth nitrate, and slowly stirring;
a2, after stirring is completed and solution is produced, cooling the bismuth nitrate solution II in the reactor to room temperature;
in step A2, the stirring speed was 30 r/min.
According to the above technical solution, the bismuth ceramic pigment in step S5 further includes the following steps:
b1, screening the bismuth ceramic pigment through a screening machine, packaging the qualified bismuth ceramic pigment, and grinding the unqualified bismuth ceramic pigment;
b2, detecting the qualified bismuth ceramic pigment, and packaging after detection is finished;
and B3, packaging, placing, and performing sampling inspection.
According to the technical scheme, the screen used for screening by the screening machine in the step B1 is 600 meshes, the unqualified bismuth ceramic pigment is ground by the grinding machine, and impurities in the bismuth ceramic pigment are removed in the grinding process.
According to the technical scheme, the detection items in the step B2 are color, temperature resistance, oil absorption, light resistance, heat resistance, acid resistance and dispersibility;
and B2, packaging by a packaging machine, removing air in packaging, and performing vacuum packaging.
According to the technical scheme, the sampling rate in the step B3 is 0.2%;
step B2 is carried out in an environment at room temperature, away from acidic and basic substances.
Example 2: as shown in figures 1-3, the invention provides a technical scheme of a preparation process of a novel bismuth temperature-resistant environment-friendly pigment, which comprises the following steps:
s1, weighing ammonium metavanadate solid at room temperature, adding distilled water and NaOH, and strongly stirring for 15 minutes to obtain a solution I;
s2, weighing bismuth nitrate solid according to the molar ratio of the bismuth nitrate solid to vanadium element, and adding concentrated nitric acid to dissolve the bismuth nitrate solid to obtain a bismuth nitrate solution II;
s3, adding the solution I into the solution II, and stirring for 1 hour to obtain a bismuth vanadate pigment precursor;
s4, dissolving the bismuth vanadate pigment precursor obtained in the second step in distilled water, adding silicate and ammonia water, and reacting at room temperature to obtain a coated pigment;
and S5, after the reaction is finished, washing the prepared product with distilled water and ethanol respectively, drying, calcining and crushing to obtain the bismuth ceramic pigment.
According to the technical scheme, the mol number of NaOH in the step S1 is 3 times of that of vanadium element.
According to the above technical scheme, in step S3, the stirring environment is PH 6 and the temperature is 70 ℃.
According to the technical scheme, in the step S4, the reaction time is 4 hours at room temperature, and silicate accounting for 15% of the powder is added.
According to the above technical scheme, washing is carried out for 2 times by distilled water and ethanol in the step S5, drying is carried out for 4 hours at 105 ℃, and calcining is carried out for 5 hours at 600 ℃.
According to the technical scheme, concentrated nitric acid in the step S2 is added into bismuth nitrate to prevent the bismuth nitrate from being hydrolyzed;
the dissolution steps are as follows:
a1, putting concentrated nitric acid into a reactor, slowly adding bismuth nitrate, and slowly stirring;
a2, after stirring is completed and solution is produced, cooling the bismuth nitrate solution II in the reactor to room temperature;
in step A2, the stirring speed was 40 r/min.
According to the above technical solution, the bismuth ceramic pigment in step S5 further includes the following steps:
b1, screening the bismuth ceramic pigment through a screening machine, packaging the qualified bismuth ceramic pigment, and grinding the unqualified bismuth ceramic pigment;
b2, detecting the qualified bismuth ceramic pigment, and packaging after detection is finished;
and B3, packaging, placing, and performing sampling inspection.
According to the technical scheme, the screen mesh used for screening by the screening machine in the step B1 is 500 meshes, the unqualified bismuth ceramic pigment is ground by the grinding machine, and impurities in the bismuth ceramic pigment are removed in the grinding process.
According to the technical scheme, the detection items in the step B2 are color, temperature resistance, oil absorption, light resistance, heat resistance, acid resistance and dispersibility;
and B2, packaging by a packaging machine, removing air in packaging, and performing vacuum packaging.
According to the technical scheme, the sampling rate in the step B3 is 0.4%;
step B2 is carried out in an environment at room temperature, away from acidic and basic substances.
Example 3: as shown in figures 1-3, the invention provides a technical scheme of a preparation process of a novel bismuth temperature-resistant environment-friendly pigment, which comprises the following steps:
s1, weighing ammonium metavanadate solid at room temperature, adding distilled water and NaOH, and strongly stirring for 15 minutes to obtain a solution I;
s2, weighing bismuth nitrate solid according to the molar ratio of the bismuth nitrate solid to vanadium element, and adding concentrated nitric acid to dissolve the bismuth nitrate solid to obtain a bismuth nitrate solution II;
s3, adding the solution I into the solution II, and stirring for 1 hour to obtain a bismuth vanadate pigment precursor;
s4, dissolving the bismuth vanadate pigment precursor obtained in the second step in distilled water, adding silicate and ammonia water, and reacting at room temperature to obtain a coated pigment;
and S5, after the reaction is finished, washing the prepared product with distilled water and ethanol respectively, drying, calcining and crushing to obtain the bismuth ceramic pigment.
According to the technical scheme, the mol number of NaOH in the step S1 is 6 times of that of vanadium element.
According to the above technical scheme, in step S3, the stirring environment is PH 5 and the temperature is 75 ℃.
According to the technical scheme, in the step S4, the reaction time is 5 hours at room temperature, and 13% of silicate powder is added.
According to the above technical scheme, washing is carried out for 3 times by distilled water and ethanol in the step S5, drying is carried out for 4 hours at 105 ℃, and calcining is carried out for 5 hours at 600 ℃.
According to the technical scheme, concentrated nitric acid in the step S2 is added into bismuth nitrate to prevent the bismuth nitrate from being hydrolyzed;
the dissolution steps are as follows:
a1, putting concentrated nitric acid into a reactor, slowly adding bismuth nitrate, and slowly stirring;
a2, after stirring is completed and solution is produced, cooling the bismuth nitrate solution II in the reactor to room temperature;
in step A2, the stirring speed was 50 r/min.
According to the above technical solution, the bismuth ceramic pigment in step S5 further includes the following steps:
b1, screening the bismuth ceramic pigment through a screening machine, packaging the qualified bismuth ceramic pigment, and grinding the unqualified bismuth ceramic pigment;
b2, detecting the qualified bismuth ceramic pigment, and packaging after detection is finished;
and B3, packaging, placing, and performing sampling inspection.
According to the technical scheme, the screen used for screening by the screening machine in the step B1 is 600 meshes, the unqualified bismuth ceramic pigment is ground by the grinding machine, and impurities in the bismuth ceramic pigment are removed in the grinding process.
According to the technical scheme, the detection items in the step B2 are color, temperature resistance, oil absorption, light resistance, heat resistance, acid resistance and dispersibility;
and B2, packaging by a packaging machine, removing air in packaging, and performing vacuum packaging.
According to the technical scheme, the sampling rate in the step B3 is 0.4%;
step B2 is carried out in an environment at room temperature, away from acidic and basic substances.
The following tables are prepared by examples 1-3 to facilitate the study:
by contrast, the qualified bismuth vanadate can be prepared in the examples 1 to 3, and can reach the standard, so that the production process is proved to have the composite standard and is suitable for popularization and application.
Compared with the prior art, the invention has the beneficial effects that: the bismuth vanadate yellow pigment has a scientific and reasonable structure, is safe and convenient to use, has innovation points that silicic acid generated by a silicate polymerization reaction is coated on the surface of bismuth vanadate, and can resist high temperature of about 1000 ℃ due to extremely strong inertia of silicon dioxide, and the pigment is still bright in color and loose in structure after being calcined at 1000 ℃.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation process of a novel bismuth temperature-resistant environment-friendly pigment is characterized by comprising the following steps: the method comprises the following steps:
s1, weighing ammonium metavanadate solid at room temperature, adding distilled water and NaOH, and strongly stirring for 15 minutes to obtain a solution I;
s2, weighing bismuth nitrate solid according to the molar ratio of the bismuth nitrate solid to vanadium element, and adding concentrated nitric acid to dissolve the bismuth nitrate solid to obtain a bismuth nitrate solution II;
s3, adding the solution I into the solution II, and stirring for 1 hour to obtain a bismuth vanadate pigment precursor;
s4, dissolving the bismuth vanadate pigment precursor obtained in the second step in distilled water, adding silicate and ammonia water, and reacting at room temperature to obtain a coated pigment;
and S5, after the reaction is finished, washing the prepared product with distilled water and ethanol respectively, drying, calcining and crushing to obtain the bismuth ceramic pigment.
2. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment according to claim 1, wherein the molar number of NaOH in the step S1 is 2-6 times that of vanadium.
3. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment according to claim 1, wherein the stirring environment in the step S3 is pH 3-8 and the temperature is 50-95 ℃.
4. The preparation process of the novel bismuth temperature-resistant environment-friendly pigment according to claim 1, wherein in the step S4, 10% -15% of silicate powder is added, wherein the reaction time is 1-5 hours at room temperature.
5. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment according to claim 1, wherein in the step S5, the pigment is washed by distilled water and ethanol for 2-3 times, dried at 105 ℃ for 4 hours and calcined at 600 ℃ for 4-6 hours.
6. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment according to claim 1, wherein concentrated nitric acid in the step S2 is added into bismuth nitrate to prevent the bismuth nitrate from being hydrolyzed;
the dissolution steps are as follows:
a1, putting concentrated nitric acid into a reactor, slowly adding bismuth nitrate, and slowly stirring;
a2, after stirring is completed and solution is produced, cooling the bismuth nitrate solution II in the reactor to room temperature;
the stirring speed in the step A2 is 30-50 r/min.
7. The preparation process of the novel bismuth temperature-resistant environment-friendly pigment according to claim 1, wherein the bismuth ceramic pigment in the step S5 further comprises the following steps:
b1, screening the bismuth ceramic pigment through a screening machine, packaging the qualified bismuth ceramic pigment, and grinding the unqualified bismuth ceramic pigment;
b2, detecting the qualified bismuth ceramic pigment, and packaging after detection is finished;
and B3, packaging, placing, and performing sampling inspection.
8. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment as claimed in claim 7, wherein the screen used for screening by the screening machine in the step B1 is 500-600 mesh, the unqualified bismuth ceramic pigment is ground by a grinding machine, and impurities in the bismuth ceramic pigment are removed during grinding.
9. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment according to claim 7, wherein the detection items in the step B2 are color, temperature resistance, oil absorption, light resistance, heat resistance, acid resistance and dispersibility;
and B2, packaging by a packaging machine, removing air in packaging, and performing vacuum packaging.
10. The process for preparing the novel bismuth temperature-resistant environment-friendly pigment according to claim 7, wherein the sampling rate in the step B3 is 0.2-0.5%;
the storage environment in the step B2 is room temperature and is far away from acidic and alkaline substances.
Priority Applications (1)
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| CN121825304A (en) * | 2026-03-12 | 2026-04-10 | 成都先进金属材料产业技术研究院股份有限公司 | Coating and preparation method thereof |
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