Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for preparing high-purity vanadium pentoxide by adopting ammonium metavanadate as raw material

A technology of vanadium pentoxide and ammonium metavanadate, applied in the direction of vanadium oxide, etc., can solve the problems of incomplete impurity removal and high impurity content, and achieve the effect of stable product quality and simple process control

Inactive Publication Date: 2012-07-25
湖南汇锋高新能源有限公司
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a process for preparing high-purity vanadium pentoxide with ammonium metavanadate as raw material, so as to solve the problem of incomplete impurity removal and high impurity content in the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 100kg of ammonium metavanadate to 400kg of water, heat to 65°C, and stir until the ammonium metavanadate is completely dissolved; add 0.5Kg of hydrogen peroxide, add appropriate amount of sodium carbonate to adjust the pH of the vanadium solution to 9, stir evenly, and keep warm for 1 hour; add 30g of oxalic acid , sodium citrate, magnesium chloride (its mass ratio is 1: 1: 1), stir, and keep warm for 2h; the vanadium solution is cooled to 45°C, press-filtered, and the resulting filtrate is put into a vanadium sink and cooled to below 40°C; The mass ratio of ammonium chloride to vanadium pentoxide is 0.7:1. Add ammonium chloride to precipitate vanadium. The vanadium precipitation time is 5 hours, and stand until ammonium metavanadate is completely precipitated; put the ammonium metavanadate precipitate into a centrifuge and add metavanadium Ammonium metavanadate 6 times of deionized water was deionized and washed by centrifugal dehydration several times, and dehydrat...

Embodiment 2

[0016] Add 100kg of ammonium metavanadate to 450kg of water, heat to 75°C, and stir until the ammonium metavanadate is completely dissolved; add 0.5Kg of hydrogen peroxide, add an appropriate amount of sodium carbonate, adjust the pH of the vanadium solution to 9.5, stir, and keep warm for 1 hour; add 50g of oxalic acid , sodium citrate, magnesium chloride, fly ash (its mass ratio is 1: 1: 1: 2), stir, and keep warm for 3h; the vanadium solution is cooled to 40°C, press-filtered, and the gained filtrate is put into a vanadium sink for cooling; According to the mass ratio of vanadium pentoxide and ammonium chloride as 1:1.2, add ammonium chloride to precipitate vanadium, and the vanadium precipitation time is 8h, until ammonium metavanadate is completely precipitated; put the ammonium metavanadate precipitate into a centrifuge and add metavanadium Ammonium metavanadate was oxidized and calcined in a muffle furnace at a temperature of 525°C for 4 hours; the calcined The solid po...

Embodiment 3

[0018] Add 100kg of ammonium metavanadate to 500kg of water, heat to 85°C, and stir until the ammonium metavanadate is completely dissolved; add 0.5Kg of hydrogen peroxide, add appropriate amount of sodium carbonate to adjust the pH of the vanadium solution to 10, stir, and keep warm for 1 hour; add 70g of citric acid Sodium, magnesium chloride, and fly ash (the mass ratio is 2:2:3), stirred, and kept warm for 4 hours; the vanadium solution was cooled to 40°C, press-filtered, and the obtained filtrate was placed in a vanadium precipitation pool and cooled to below 40°C; The mass ratio of vanadium pentoxide to ammonium chloride is 1:1.5. Add ammonium chloride to precipitate vanadium. The vanadium precipitation time is 12 hours until ammonium metavanadate is completely precipitated; put the ammonium metavanadate precipitate into a centrifuge and add metavanadate Deionized water 8 times ammonium was deionized and washed several times, and dehydrated to near dryness to obtain ammon...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a process for preparing high-purity vanadium pentoxide by adopting ammonium metavanadate as a raw material. The process comprises the following step of obtaining a high-purity vanadium pentoxide product after an ammonium metavanadate crude product is treated by adopting the processes of dissolving, adjusting pH, removing impurities by an impurity removing agent, precipitating vanadium for removing impurities, and calcining and the like. By detection, the content of the high-purity vanadium pentoxide prepared by adopting the process can be up to more than 99.5%, and the content of the impurity is less than 100ppm. The process disclosed by the invention has the advantages that the control is simple, the quality of a product is stable, no pollution is caused to the environment, and the requirement for clean production is met and the like. The process is suitable for large-scale production.

Description

technical field [0001] The invention relates to a preparation process of vanadium pentoxide, in particular to a process for preparing high-purity vanadium pentoxide by using ammonium metavanadate as a raw material. Background technique [0002] my country is rich in vanadium resources, and vanadium products are widely used. In recent years, with the advancement of technology, the industrial production of some vanadium downstream high-end technology products has higher requirements for the quality of vanadium compounds. High-purity vanadium pentoxide is widely used in aerospace industry, nuclear industry, solar energy, wind power storage and equipment, coatings, catalysts, luminescent materials and other fields. Especially in the field of energy storage in the new energy industry - the vanadium battery industry is developing rapidly. The domestic supply of high-purity vanadium pentoxide cannot meet the domestic quality and market demand, mainly relying on imports. Therefore...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G31/02
Inventor 王远望阳更君
Owner 湖南汇锋高新能源有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com