A method for deep separation of molybdenum and vanadium in molybdenum-vanadium-containing solution
A separation method and solution technology are applied in the preparation of vanadium compounds, the preparation of molybdenum compounds, chemical instruments and methods, etc., which can solve the problems of large amount of waste water, high cost, long process flow, etc. The effect of convenience and short process flow
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0024] Take 20L heavy oil hydrogenation desulfurization waste catalyst alkaline leaching liquid and obtain V-containing 2 o 5 0.9g / L, Mo4.3g / L solution, adding sulfuric acid to the solution to adjust the solution [H + ] is 0.5mol / L, add the solution containing low-valent molybdenum according to the reduction of vanadium in the solution from V (V) to 1.1 times of the theoretical amount of V (IV), and react at 50 ° C for 1 hour. The solution containing low-valent molybdenum is obtained by dissolving ammonium molybdate into an acidic solution with a pH value of 0 and feeding sulfur dioxide under pressure for reduction. Add sodium carbonate to the solution after reduction to adjust the pH of the solution to 5.0, precipitate the oxides of tetravalent vanadium, filter the oxides of tetravalent vanadium and the solution after precipitation of vanadium, and calcinate the oxides of tetravalent vanadium at 500 ° C for 3 hours to obtain V 2 o 5 99.1% vanadium pentoxide product; addi...
Embodiment 2
[0026] Take 10L of vanadium-molybdenum-lead ore alkaline leaching solution and obtain V-containing 2 o 5 1.1g / L, Mo 9.1g / L solution, add hydrochloric acid to adjust solution [H + ] is 2mol / L, add MoO by 1.3 times of V(V) in the solution reduced to V(IV) theoretical amount 2 , reacted at 95°C for 3 hours; added sodium hydroxide to the solution after reduction to adjust the pH of the solution to 2.0, then used anion exchange resin D314 to enrich molybdenum, and analyzed with ammonia water to obtain molybdenum ammonium containing Mo 150g / L and V 1.1mg / L salt solution, then adjust the pH of the ammonium salt solution of molybdenum to 9.0, add magnesium chloride to react at 50°C for 1 hour, and filter to obtain the purified liquid; Ammonium molybdate, ammonium tetramolybdate is dried at 90°C to obtain ammonium tetramolybdate product, ammonium tetramolybdate contains V 0.0006%; add sodium hydroxide to the solution after molybdenum extraction by ion exchange to adjust the pH of th...
Embodiment 3
[0028] Get Mo 7.9g / L obtained by oxidizing and roasting 10L nickel-molybdenum ore, V 2 o 5 0.4g / L alkaline leaching solution, adding sulfuric acid to the solution to adjust the solution [H + ] is 1.5mol / L, according to the reduction of vanadium in the solution to 1.2 times of the theoretical amount of V(IV), add the solution containing low-valent molybdenum, and react at 60°C for 1 hour. The solution containing low-valent molybdenum is to dissolve ammonium molybdate into [H + ] is obtained by adding zinc to 1mol / L acidic solution for reduction. Add potassium carbonate to the solution after reduction to adjust the pH of the solution to 5.0, precipitate the oxides of tetravalent vanadium, filter the oxides of tetravalent vanadium and the solution after precipitation of vanadium, calcinate the oxides of tetravalent vanadium at 500 ° C for 3 hours, and obtain the oxides containing V 2 o 598.9% vanadium pentoxide product; add sulfuric acid to the solution after vanadium precip...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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