Method for preparing high-purity vanadium pentoxide from vanadium-chromium solution without ammonium
A technology for vanadium pentoxide and vanadium oxide is applied in the field of preparing high-purity vanadium pentoxide without ammonium from a vanadium-chromium solution, and can solve the problems of intractability, inapplicability, complicated process and the like of a production system
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0024] A method for preparing high-purity vanadium pentoxide from a vanadium-chromium solution without ammonium, comprising the following steps:
[0025] Step 1. Add 91.5g calcium sulfate to 1L vanadium-chromium solution with a vanadium concentration of 35g / L and a chromium concentration of 100g / L, adjust the pH to 8, heat at 80°C and stir for 30min, and separate solid-liquid to obtain calcium vanadate precipitation And vanadium-free and chromium-containing filtrate, vanadium-free and chromium-containing filtrate is used to produce chromium-based chemical products;
[0026] Step 2: After washing the calcium vanadate precipitate, add 10 times its mass of water to stir, then add a 50% sulfuric acid solution, adjust the pH to 4, and separate the solid-liquid to obtain a vanadium-containing leachate and calcium sulfate precipitation; Add 50% sulfuric acid to the vanadium leaching solution, adjust the pH to 1.5, heat at 80 °C and stir for 60 minutes, and separate the solid and liqu...
Embodiment 2
[0030] A method for preparing high-purity vanadium pentoxide from a vanadium-chromium solution without ammonium, comprising the following steps:
[0031] Step 1. Add 72g calcium sulfate to 1L vanadium-chromium solution with a vanadium concentration of 35g / L and a chromium concentration of 100g / L, adjust the pH value to 6.8, heat at 80°C and stir for 100min, and separate solid-liquid to obtain calcium vanadate precipitation and Vanadium-free and chromium-containing filtrate, vanadium-free and chromium-containing filtrate is used to produce chromium-based chemical products;
[0032] Step 2: After washing the calcium vanadate precipitate, add 10 times its mass of water to stir, then add a 60% sulfuric acid solution, adjust the pH to 2, and separate the solid-liquid to obtain a vanadium-containing leachate and calcium sulfate precipitation; Add 60% sulfuric acid to the vanadium leaching solution, adjust the pH to 2.3, heat at 80°C and stir for 90 minutes, and separate the solid an...
Embodiment 3
[0036] A method for preparing high-purity vanadium pentoxide from a vanadium-chromium solution without ammonium, comprising the following steps:
[0037] Step 1. Add 138g calcium sulfate to 1L vanadium-chromium solution with a vanadium concentration of 35g / L and a chromium concentration of 100g / L, adjust the pH value to 10.5, heat at 80°C and stir for 30min, and separate solid-liquid to obtain calcium vanadate precipitation and Vanadium-free and chromium-containing filtrate, vanadium-free and chromium-containing filtrate is used to produce chromium-based chemical products;
[0038]Step 2: After washing the calcium vanadate precipitate, add 10 times its mass of water to stir, then add a 60% sulfuric acid solution, adjust the pH to 3, and separate the solid-liquid to obtain a vanadium-containing leachate and calcium sulfate precipitation; Add 60% sulfuric acid to the vanadium leaching solution, adjust the pH to 0.5, heat at 80 °C and stir for 60 min, and separate the solid and l...
PUM

Abstract
Description
Claims
Application Information

- Generate Ideas
- Intellectual Property
- Life Sciences
- Materials
- Tech Scout
- Unparalleled Data Quality
- Higher Quality Content
- 60% Fewer Hallucinations
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com