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

Method for extracting vanadium from stone coal pickle liquor

A technology of acid leaching solution and stone coal, which is applied in the field of vanadium metallurgy, can solve the problems of rising production cost of vanadium extraction from stone coal, unfavorable development and environmental protection, and increased difficulty in recycling, so as to eliminate adverse effects and reduce reagent consumption , to avoid the effect of consumption

Inactive Publication Date: 2014-05-14
CENT SOUTH UNIV
View PDF3 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of oxidants and reducing agents not only increases the production cost of vanadium extraction from stone coal, but also complicates the composition of the liquid after vanadium extraction from stone coal, making it more difficult to reuse water in the process, which has great impact on the vanadium extraction industry from stone coal. The development and environmental protection are extremely unfavorable

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

[0051] step one

[0052] After removing aluminum, the content of V1.81g / L, Fe T 10.53g / L (Fe T Indicates the total concentration of iron element), 10L of stone coal acid immersion solution with Fe(III) 4.92g / L, stirred and added limestone milk to adjust the pH value to 1.5, filtered, and the filtrate used P204-kerosene system as the organic phase, in the organic phase The concentration of P204 is 20v / v%, according to O / A (volume ratio of organic phase to water phase)=1:0.5, three-stage contact extraction and iron removal are carried out to obtain an organic phase containing Fe(III) and V(IV) and Liquid after iron removal, the organic phase containing Fe(III) containing V(IV) contains Fe7.23g / L, containing V0.51g / L; the organic phase containing Fe(III) containing V(IV) After 0.5mol / L H 2 SO 4 The co-extracted vanadium is eluted with the solution to obtain an eluent containing V(IV) and an organic phase containing Fe(III); the obtained eluate containing V(IV) is acidified by...

Embodiment 2

[0065] step one

[0066] After removing aluminum, the content of V3.83g / L, Fe T 7.65g / L, Fe(III) 2.52g / L stone coal acid leaching solution 4L, stir and add CaCO 3 Adjust the pH value to 0.7, filter, and use the P507-TBP-kerosene system as the organic phase for the filtrate, the concentration of P507 in the organic phase is 15v / v%, according to O / A (volume ratio of the organic phase to the aqueous phase) = 1: 1. Carry out 4-stage contact extraction to remove iron, obtain the organic phase containing Fe(III) and V(IV) and the liquid after iron removal, and the organic phase containing Fe(III) and V(IV) contains Fe3.5g / L, containing V0.17g / L; The organic phase containing Fe(III) and V(IV) is first subjected to 0.3mol / L H 2 SO 4 The co-extracted vanadium is eluted with the solution to obtain an eluent containing V(IV) and an organic phase containing Fe(III); the obtained eluate containing V(IV) is acidified by adding sulfuric acid to obtain an acidified eluate containing V(IV)...

Embodiment 3

[0079] step one

[0080] After removing aluminum, the content of V4.57g / L, Fe T 8.41g / L, Fe(III) 2.62g / L stone coal acid immersion solution 2500ml, stir and add ammonia water to adjust the pH value to 1.3, filter, use Cyanex272-TBP-kerosene system as the organic phase of the filtrate, the concentration of Cyanex272 in the organic phase is 10v / v%, according to O / A (volume ratio of organic phase to aqueous phase) = 1:2, carry out 5-stage contact extraction to remove iron, and obtain an organic phase containing Fe(III) and V(IV) and after iron removal liquid, the organic phase containing Fe(III) and V(IV) contains Fe3.48g / L, and contains V0.22g / L; the organic phase containing Fe(III) and V(IV) is first subjected to 0.8 mol / L H 2 SO 4 The co-extracted vanadium is eluted with the solution to obtain an eluent containing V(IV) and an organic phase containing Fe(III); the obtained eluate containing V(IV) is acidified by adding sulfuric acid to obtain an acidified eluate containing ...

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 method for extracting vanadium from stone coal pickle liquor. The technical process mainly comprises the steps of extracting the stone coal pickle liquor subjected to aluminum removal through an acidic phosphate ester extracting agent solvent to remove ferric iron, enriching the vanadium through the acidic phosphate ester extracting agent solvent after the iron is removed and the pH of the liquor is adjusted, neutralizing precipitates with the vanadium-enriched liquor to obtain vanadium dioxide hydrate, refining the vanadium dioxide hydrate, calcining the refined vanadium dioxide hydrate to obtain a vanadium oxide product and the like. The method for extracting the vanadium from stone coal pickle liquor has the advantages of short technical flow, low consumption of reagents, low production cost, high product quality, environment friendliness and the like.

Description

technical field [0001] The invention relates to a method for extracting vanadium from stone coal acid leaching solution, belonging to the technical field of vanadium metallurgy. Background technique [0002] Stone coal is a vanadium-containing polymetallic metallurgical mineral raw material, which contains elements such as vanadium, iron, aluminum, silicon, and carbon, among which iron exists in the form of Fe(III) and Fe(II). During the sulfuric acid leaching process of stone coal, vanadium, iron, aluminum, etc. enter the solution together. When the molar ratio of Fe(III) / Fe(II) in the solution is 1:0.1-10, the vanadium in the solution is almost all V(IV). The presence of iron in solution, especially ferric iron, is extremely harmful to the separation and enrichment of vanadium. Therefore, in order to eliminate the influence of ferric iron, stone coal acid leaching solution usually adopts the following process to separate and enrich vanadium: [0003] 1) Stone coal sulfu...

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): C22B34/22C22B3/38
CPCY02P10/20
Inventor 王学文马艺骞王明玉刘学辉
Owner CENT SOUTH UNIV
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