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A kind of preparation method of vanadium bismuth persimmon and application of vanadium bismuth persimmon as pigment

A technology of metavanadic acid and bismuth nitrate, applied in chemical instruments and methods, vanadium compounds, inorganic chemistry, etc., can solve problems such as single color and unsatisfactory

Active Publication Date: 2022-04-05
HUNAN SANFENG VANADIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] To sum up, at present, the main application form of bismuth vanadate is the application form of yellow pigment, which has a single color and cannot meet the needs of the current stage.

Method used

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Examples

Experimental program
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Effect test

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[0034] The invention provides a kind of preparation method of vanadium bismuth persimmon, comprising the steps of:

[0035] 1) dissolving bismuth nitrate, aluminum nitrate and molybdenum nitrate in nitric acid solution to obtain a metal nitrate mixed solution;

[0036] Ammonium sulfate, ammonium chloride and ammonium nitrate are dissolved in sulfuric acid solution to obtain ammonium salt mixed solution.

[0037] 2) dissolving ammonium metavanadate in NaOH solution, adjusting the pH value to 11-14 to obtain sodium metavanadate solution;

[0038] 3) cooling the sodium metavanadate solution to room temperature, adding acid to adjust the pH value to 4.5-5.5 to obtain a sodium vanadate solution;

[0039] 4) heating the sodium vanadate solution to boiling, mixing with the ammonium salt mixed solution obtained in the step 1), heating up after the heat preservation reaction, and then mixing with the metal nitrate mixed solution obtained in the step 1), adding acid to adjust the pH v...

Embodiment 1

[0057] 1) Dissolve bismuth nitrate, aluminum nitrate and molybdenum nitrate in 10mol / L nitric acid solution to obtain metal nitrate mixtures with bismuth nitrate, aluminum nitrate and molybdenum nitrate concentrations of 1mol / L, 0.1mol / L and 0.05mol / L respectively solution;

[0058] Ammonium sulfate, ammonium chloride and ammonium nitrate with a mass ratio of 5:5:8 were dissolved in a 14mol / L sulfuric acid solution to obtain NH 4 + The concentration is 6mol / L ammonium salt mixed solution.

[0059] 2) 100kg ammonium metavanadate is dissolved in 6mol / L NaOH solution, and the pH value is adjusted to 11 to obtain sodium vanadate solution;

[0060] 3) cooling the sodium vanadate solution to room temperature, adding nitric acid to adjust the pH value to 4.5 to obtain a metavanadate solution;

[0061] 4) Heat the metavanadic acid solution to 60°C, mix it with the ammonium salt mixed solution obtained in step 1) according to the volume ratio of 1:0.25, and keep it warm for 30 minut...

Embodiment 2

[0064] 1) Dissolve bismuth nitrate, aluminum nitrate and molybdenum nitrate in 12mol / L nitric acid solution to obtain metal nitrates with bismuth nitrate, aluminum nitrate and molybdenum nitrate concentrations of 1.5mol / L, 0.15mol / L and 0.1mol / L respectively mixture;

[0065] Dissolve ammonium sulfate, ammonium chloride and ammonium nitrate with a mass ratio of 5:4:10 in a 16mol / L sulfuric acid solution to obtain NH 4 + The concentration is 8mol / L ammonium salt mixed solution.

[0066] 2) 100kg ammonium metavanadate was dissolved in 8mol / L NaOH solution, and the pH value was adjusted to 12 to obtain sodium vanadate solution;

[0067] 3) cooling the sodium vanadate solution to room temperature, adding nitric acid to adjust the pH value to 5, to obtain a metavanadate solution;

[0068] 4) Heat the metavanadic acid solution to 80°C, mix it with the ammonium salt mixed solution obtained in the step 1) according to the volume ratio of 1:0.3, and keep it warm for 60 minutes;

[...

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Abstract

The invention provides a method for preparing vanadium bismuth persimmon, comprising the following steps: 1) preparing a metal nitrate mixed solution of bismuth nitrate, aluminum nitrate and molybdenum nitrate, and an ammonium salt mixed solution of ammonium sulfate, ammonium chloride and ammonium nitrate ; 2) dissolving ammonium metavanadate in sodium hydroxide solution to adjust the pH value to prepare a sodium metavanadate solution; 3) cooling the sodium metavanadate solution to room temperature, adding acid to adjust the pH value to obtain Sodium vanadate solution; 4) heating the sodium vanadate solution, mixing it with the ammonium salt mixed solution obtained in the step 1), heating up after the heat preservation reaction, and then performing the reaction with the metal nitrate mixed solution obtained in the step 1) Mixing, adding acid to adjust the pH value to 1-2, salting out reaction to obtain vanadium bismuth persimmon red. The core of the present invention lies in the innovation of the process route and the optimization of parameters, the process is simple, the raw materials do not contain polluting components, and has the characteristics of cleanliness and environmental protection. The advantage of being non-toxic.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic pigments, in particular to a preparation method of vanadium bismuth persimmon and its application as a pigment. Background technique [0002] Bismuth vanadate is also known as 184 yellow, bismuth yellow, molybdenum bismuth yellow, titanium bismuth yellow, bismuth yellow 184 in the world. It was first successfully produced and developed by BASF in Germany, marking the birth of a new generation of environmentally friendly materials. [0003] There are four known lattice structures of bismuth vanadate, and the colors are different according to the lattice structure: [0004] 1. Tetragonal crystal, which is a scheelite-type crystal, can be used as a yellow pigment; [0005] 2. Tetragonal, zirconium silicate type crystal, very light yellow; [0006] 3. Orthorhombic crystal, which is a vanadate-type crystal, and the bismuth vanadate in nature is brown; [0007] 4. Monoclinic crystal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G31/00
CPCC01G31/00
Inventor 许小弟田兴江
Owner HUNAN SANFENG VANADIUM IND CO LTD