Supercharge Your Innovation With Domain-Expert AI Agents!

Method for vadaium precipitation from balck acid leaching vanadium liquid

A technology of black acid and vanadium liquid, applied in the direction of improving process efficiency, etc., can solve problems such as black acid leaching vanadium liquid precipitation method, affecting the circulation of pipelines, reducing product grade, etc., so as to avoid incomplete vanadium precipitation , Improving pipeline flow capacity and reducing vanadium loss

Active Publication Date: 2015-07-22
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, on the one hand, the added oxidant is powdered ammonium persulfate, and the pH of the solution will drop to about 1.0 after adding, without relevant pH adjustment; on the other hand, because the solution contains a certain amount of NH 4 + , hydrolysis and ammonium salt complex vanadium precipitation occur during storage or transportation, which will greatly reduce the overall vanadium yield and also affect the flowability of the transportation pipeline; secondly, the solution is not filtered after impurity removal, and the iron precipitate formed Entering the precipitation process, reducing the product grade
[0008] So far, there is no effective method for vanadium precipitation in black acid leaching vanadium 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
  • Method for vadaium precipitation from balck acid leaching vanadium liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Measure V 5+ , V 4+ , TFe concentrations of 31.24g / L, 1.27g / L and 0.405g / L black leachate 500mL, the solution pH = 3.82, T = 31 ℃. Add pH=3.20, the oxidizing agent solution 12ml that ammonium persulfate concentration is 600g / L to it, filter after stirring for 5min, the V in the filtrate 5+ , V 4+ , TFe concentrations were 32.44g / L, 2 o 5 Content 99.23%, V 4+ The content of TFe is <0.05%, and the content of TFe is 0.098%. The TV content of the supernatant liquid after filtration is 0.138g / L, the corresponding vanadium precipitation rate is 99.57%, and the vanadium loss in the whole process is 0.64%.

Embodiment 2

[0052] Measure V 5+ , V 4+ , TFe concentrations were 18.86g / L, 2.81g / L and 0.601g / L black leach solution 500mL, the solution pH=2.93, T=15 ℃. Add pH=3.8, the oxidant solution 21.4ml that ammonium persulfate concentration is 700g / L to it, filter after stirring for 8min, the V in the filtrate 5+ , V 4+ , TFe concentrations were 21.55g / L, 2 o 5 Content 98.78%, V 4+ The content of TFe is <0.05%, and the content of TFe is 0.154%. The TV content of the supernatant liquid after filtration is 0.096g / L, the corresponding vanadium deposition rate is 99.09%, and the vanadium lost in the whole process is 0.99%.

Embodiment 3

[0056] Measure V 5+ , V 4+ , TFe concentrations of 28.35g / L, 2.57g / L and 0.215g / L black leachate 500mL, the solution pH = 3.01, T = 27 ℃. Add pH=2.8, the oxidant solution 16.5ml that ammonium persulfate concentration is 750g / L to it, filter after stirring for 5min, the V in the filtrate 5+ , V 4+ , TFe concentrations were 30.85g / L, 2 o 5 Content 99.08%, V 4+ content <0.05%, TFe content 0.116%; the TV content of the supernatant liquid after filtration is 0.092g / L, the corresponding vanadium deposition rate is 99.70%, and the vanadium loss in the whole process is 0.52%.

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 vadaium precipitation from black acid leaching vanadium liquid. The method comprises the following steps sequentially carried out that (1) an oxidant is added to the black acid leaching vanadium liquid, is stirred and is precipitated, the reaction temperature ranges from 10 DEG C to 40 DEG C and the reaction time ranges from 5min to 10min; (2) filtering and precipitation are carried to acquire filter liquid; (3) ammonium sulfate is added to the filter liquid and is stirred to acquire vanadium liquid; (4) the pH value of the vanadium liquid is regulated through sulfuric acid to range from 1.8 to 2.4, the vanadium liquid is heated to be over 90 DEG C and is stirred and precipitated to acquire ammonium polyorthovanadate mixed liquid; (5) the ammonium polyorthovanadate mixed liquid is filtered to acquire ammonium polyorthovanadate precipitation, and theammonium polyorthovanadate precipitation is washed, dried and roasted to acquire vanadium pentoxide. The method for vadaium precipitation from the black acid leaching vanadium liquid can obviously improve vanadium precipitation efficiency and reduce vanadium loss, effectively remove iron ions in the vanadium liquid, improve product quality and reduce production cost, and is particularly suitable for initial production stages of new vanadium factories.

Description

technical field [0001] The invention relates to the field of extraction of vanadium oxide, in particular to a vanadium precipitation method of vanadium slag calcification and roasting clinker in acid leaching vanadium solution. Background technique [0002] "Converter vanadium slag → calcification roasting → sulfuric acid leaching → acidic vanadium precipitation" is a new vanadium oxide extraction process. The direction of sustainable development of vanadium technology. [0003] The crushed vanadium slag in this process is generally subjected to magnetic separation, the purpose of which is to basically control the content of magnetic substances within 3%, and then after being mixed with limestone, it enters the rotary kiln for calcification and roasting. The obtained clinker is subjected to sulfuric acid acid leaching in the range of pH 2.5-3.5, and the vanadium leaching solution can be directly used for vanadium precipitation, the vanadium precipitation rate is high, and t...

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 Patents(China)
IPC IPC(8): C22B3/46C22B34/22
CPCY02P10/20
Inventor 何文艺卢晓林申彪郭继科叶露冯光磊余乐
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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