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Spherical high-density ammonium metavanadate as well as preparation method and application thereof

A high-density ammonium metavanadate technology, applied in the field of its preparation, spherical high-density ammonium metavanadate, can solve the problem of low density of ammonium metavanadate, achieve simple preparation method, increase axial or radial force, The effect of improving sphericity

Active Publication Date: 2020-04-07
大连融科储能集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to, aim at the above-mentioned low problem of current ammonium metavanadate density, propose a kind of preparation method of spherical high-density ammonium metavanadate, adopt this method to improve the physical characteristics of ammonium metavanadate, prepare high-density ammonium metavanadate Spherical ammonium metavanadate, the density can be as high as 1.2g / cm 3 above

Method used

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  • Spherical high-density ammonium metavanadate as well as preparation method and application thereof
  • Spherical high-density ammonium metavanadate as well as preparation method and application thereof
  • Spherical high-density ammonium metavanadate as well as preparation method and application thereof

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Embodiment 1

[0034] This embodiment discloses a preparation method of spherical high-density ammonium metavanadate, the method adopts such as figure 1 As shown in the container, the reactor is a cylindrical reactor, and two baffles 1 are longitudinally symmetrically arranged on the inner wall of the cylindrical reactor, and the baffles 1 extend radially, and the baffles 1 The ratio of the radial length to the inner diameter of the cylindrical reactor is 1.5:10; a stirring device is installed at the center of the inner bottom of the cylindrical reactor, and the effective volume of the reactor is 750ml.

[0035] The two baffles installed on the inner wall of the reactor in this embodiment can convert the tangential flow of the fluid into an axial or radial flow. When the impeller rotates normally, a tangential flow is generated under the action of centrifugal force, so that the liquid is thrown around the wall. , and rise along the periphery of the kettle, while the liquid level in the cente...

Embodiment 2

[0040] This embodiment discloses a preparation method of spherical high-density ammonium metavanadate, using the same reactor as in Example 1, and the preparation steps are as follows:

[0041] Configure ammonium sulfate solution, NH in the solution 4 + =100 g / L, pH=5. Configure vanadium-containing solution, V in the solution2 o 5 =60g / L, pH=8. The ammonium sulfate solution and the vanadium-containing solution were heated to 60°C. Start stirring, stirring speed 1200r / min, to figure 1 Add vanadium-containing solution and ammonium sulfate solution simultaneously in the shown reaction vessel (effective volume 750ml). The liquid inlet speed of the vanadium-containing solution is 20ml / min, and the liquid inlet speed of the ammonium sulfate solution is 20ml / min. After 19 minutes, stop feeding the solution, add caustic soda to adjust the pH of the solution to 10, raise the temperature to 85°C, and keep stirring for 4 hours. Adjust the stirring speed to 800r / min, lower the temp...

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Abstract

The invention provides spherical high-density ammonium metavanadate as well as a preparation method and application thereof. The preparation method comprises the following steps: respectively heatinga vanadium-containing solution and an ammonium sulfate solution to 40-60 DEG C; simultaneously adding the vanadium-containing solution and the ammonium sulfate solution into a reactor which is startedand stirred, wherein the reactor is a cylindrical reactor, a plurality of baffles are longitudinally and symmetrically arranged on the inner side wall of the cylindrical reactor, the baffles extend along the radial direction, and the ratio of the liquid inlet speed of the vanadium-containing solution to that of the ammonium sulfate solution is 1-3: 1; adding an alkaline substance into the mixed solution to adjust the pH of the solution to 8-10, filtering the solution, washing the solid with water, and drying to obtain the spherical high-density ammonium metavanadate. The preparation method ofthe spherical high-density ammonium metavanadate can improve the physical characteristics of the ammonium metavanadate and prepare high-density spherical ammonium metavanadate with a density of morethan 1.2g / cm3..

Description

technical field [0001] The invention relates to ammonium metavanadate technology, in particular to a spherical high-density ammonium metavanadate, its preparation method and application. Background technique [0002] Ammonium metavanadate is a white crystalline powder, slightly soluble in cold water, soluble in hot water and dilute ammonia, and turns into vanadium pentoxide when burned in air. It is mainly used in chemical reagents, catalysts, battery materials, etc., and can also be used to prepare vanadium pentoxide. At present, ammonium metavanadate is mainly obtained through extraction, synthesis and purification of vanadium ore. CN 106430305-A production method of high-density ammonium metavanadate-disclosed, what this patent method introduces is to add additives (sodium salt, potassium salt, magnesium salt or PAM) in the vanadium-containing solution, and then carry out ammonium salt at a certain temperature Precipitate vanadium to obtain high-density ammonium metavan...

Claims

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Application Information

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IPC IPC(8): C01G31/02C01G31/00
CPCC01G31/00C01G31/02C01P2006/10C01P2004/32C01P2004/03C01P2006/11
Inventor 邹振龙宋明明杨洪邸卫利尚俊龙
Owner 大连融科储能集团股份有限公司