System for extracting vanadium from leachate containing vanadium, chromium and silicon and preparing vanadium pentoxide, and treatment method thereof

A technology of vanadium pentoxide and leaching solution, which is applied to the preparation of vanadium compounds, vanadium oxide, chemical instruments and methods, etc. It can solve the problems of large initial investment, high equipment requirements, and affecting purity

Active Publication Date: 2018-07-20
INST OF PROCESS ENG CHINESE ACAD OF SCI
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Preparation of high-purity V from the leaching solution containing vanadium-chromium-silicon 2 o 5 The vanadium-chromium solution that is not suitable for the formation of heteropolyacids, has relatively high requirements for equipment, large initial investment, and the introduction of other impurities that affect V 2 o 5 The problem of purity, the present invention provides a kind of system and processing method thereof for preparing the system of low-chromium and low-aluminum vanadium pentoxide from vanadium-chromium-silicon solution

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System for extracting vanadium from leachate containing vanadium, chromium and silicon and preparing vanadium pentoxide, and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] This embodiment provides a system and a treatment method for extracting vanadium and preparing vanadium pentoxide from a vanadium-chromium-silicon-containing leach solution:

[0129] The system sequentially includes an impurity removal system, an extraction system, a stripping vanadium precipitation system, a washing system and a calcination system.

[0130] Wherein, the impurity removal system includes the first filter 1, the impurity removal reaction kettle 2, the impurity removal liquid static tank 3 and the second filter 4 connected in sequence, the liquid outlet of the second filter 4 and the material of the extraction system The entrance is connected.

[0131] The extraction system comprises a centrifugal extractor 5, a raffinate storage tank 6 and a vanadium-rich organic phase storage tank 7, the raffinate outlet of the centrifugal extractor 5 is connected to the inlet of the raffinate storage tank 6, and the centrifugal The organic phase outlet of the extractor...

Embodiment 2

[0145] This embodiment provides a system and a treatment method for extracting vanadium and preparing vanadium pentoxide from a vanadium-chromium-silicon-containing leach solution:

[0146] The system is the same as that in Example 1.

[0147] The processing method of the above system is:

[0148] (1) After the leaching solution containing vanadium, chromium and silicon is filtered by the first filter 1, 500mL of the leaching solution containing pentavalent vanadium, hexavalent chromium and silicon is sent to the impurity removal reaction kettle 2, and after constant temperature heating to 60°C, add 5.86 Al of g 2 (SO 4 ) 3 and 0.751 g of CaCl 2 Carry out desiliconization treatment, stir and react for 40 minutes, cool to room temperature and adjust the pH value to 7.7 with sulfuric acid, and then stir for 10 minutes, then send it to the impurity removal liquid standing tank 3 and let it stand for 2 hours, and after the second filter 4 is centrifugally separated and filtere...

Embodiment 3

[0156] This embodiment provides a system and a treatment method for extracting vanadium and preparing vanadium pentoxide from a vanadium-chromium-silicon-containing leach solution:

[0157] The system is the same as that in Example 1.

[0158] The processing method of the above system is:

[0159] (1) After the leaching solution containing vanadium, chromium and silicon is filtered by the first filter 1, 1000 mL of the leaching solution containing pentavalent vanadium, hexavalent chromium and silicon is sent to the impurity removal reaction kettle 2, and after the constant temperature is heated to 70 ° C, 1.056 g Al(OH) 3 and 0.7g CaCl 2 Carry out desiliconization treatment, stir and react for 50 minutes, cool to room temperature and adjust the pH value to 8.0 with sulfuric acid, and then stir for 10 minutes, then put it into the impurity removal liquid standing tank 3 and let it stand for 3 hours, and after centrifugal separation and filtration by the second filter 4, Obta...

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 provides a system for extracting vanadium from leachate containing vanadium, chromium and silicon and preparing vanadium pentoxide, and a treatment method thereof. The system sequentially comprises an impurity removal system, an extraction system, a stripping vanadium precipitation system, a washing system and a calcination system. The system and the method are characterized in thatdetailed studying of silicon, aluminum, chromium and other elements easily precipitating in the vanadium pentoxide product is carried out, different polymer forms of vanadium, chromium, silicon, aluminum and other impurities in an extraction feeding liquid, an impurity removal solution and raffinate are quantitatively detected through chemical regulation and device enhancement, and the structure of a extracted complex is detected, so the extraction mechanism of the vanadium, chromium, silicon and aluminum is scientifically predicated based on the result of quantitative experiment test studying; and the system is formed through chemical regulation impurity removal, an enhanced centrifugal extraction equipment and stripping quantification control and other measures in order to realize the preparation of low-chromium, low-silicon, low-aluminum and high-purity vanadium pentoxide product.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy or wastewater treatment, and relates to a system for extracting vanadium from a vanadium-chromium-silicon-containing leaching solution and preparing vanadium pentoxide and a treatment method thereof, in particular to a method for preparing low A system of chromium-low-aluminum vanadium pentoxide and its treatment method. Background technique [0002] Vanadium is a non-ferrous metal and a very important strategic resource. Vanadium pentoxide (V 2 o 5 ) is an important oxide of vanadium and is also the most widely used oxide. The scope of application has expanded from metallurgy, chemical industry and other industries to aerospace, electronic industry, electrochemistry, etc. 2 o 5 The market demand is increasing, the V 2 o 5 The purity requirements of vanadium are also getting higher and higher, especially the development of vanadium redox flow batteries and vanadium aluminum alloys, which put f...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02
CPCC01G31/003C01G31/02C01P2006/80B01D11/04C22B3/44C22B34/22C22B3/28C22B3/3846Y02P10/20B01D11/0476B01D11/0492
Inventor 曹宏斌宁朋歌
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap