Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing low-phosphorus vanadium liquid by using wastewater subjected to vanadium precipitation

A technology of vanadium precipitation wastewater and phosphorus vanadium, applied in the field of metallurgy, can solve the problems of vanadium precipitation wastewater polluting the environment, difficult treatment, inability to fully utilize, and large consumption of phosphorus removal agents, so as to simplify the process of leaching and phosphorus removal, broaden the Disposal approaches, effects of good economic and social benefits

Inactive Publication Date: 2011-05-11
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +3
View PDF2 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not make reasonable use of vanadium-precipitated wastewater as a leaching agent in the process of leaching vanadium solution, so it cannot solve the problems of environmental pollution and difficult treatment of vanadium-precipitated wastewater, and cannot make full use of available elements in raw materials, especially vanadium-precipitated wastewater, in the process of phosphorus removal. Medium ammonium ions are used to save raw materials, and the phosphorus removal agent consumes a lot during the phosphorus removal process, and it is only suitable for alkaline vanadium liquid system, which has certain limitations

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 preparing low-phosphorus vanadium liquid by using wastewater subjected to vanadium precipitation
  • Method for preparing low-phosphorus vanadium liquid by using wastewater subjected to vanadium precipitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment one prepares low phosphorus vanadium liquid with the inventive method

[0040] This embodiment is alkaline leaching of vanadium-containing clinker in vanadium-precipitating wastewater. Take 900mL of the vanadium precipitation wastewater after the sodium roasting process, the sodium ion concentration is less than 50g / L, heat it in a water bath to 50°C, adjust the pH value to 6, add 400g of clinker as shown in Table 1, and continue to heat up and stir the reaction. The material is roasted by adding sodium salt, and the pH value begins to rise during the reaction process. After 30 minutes of reaction, the pH value is 10.5, which remains basically unchanged. Add a solution made of 2.0g magnesium sulfate and a small amount of water, and the temperature is at 90°C. , kept stirring at 90°C for 15 minutes, then added a solution made of 0.5 g of calcium chloride and a small amount of water, continued to react for 10 minutes, filtered while it was hot, and obtained the...

Embodiment 2

[0041] Embodiment two uses the inventive method to prepare low-phosphorus vanadium liquid

[0042] This embodiment is alkaline leaching of vanadium-containing clinker in vanadium-precipitating wastewater. Take 900mL of the vanadium precipitation wastewater after the sodium roasting process, the sodium ion concentration is less than 50g / L, heat it in a water bath to 60°C, adjust the pH value to 8, add 400g of clinker as shown in Table 1, and continue to heat up and stir the reaction. The material is roasted by adding alkali salt, and the pH value starts to rise continuously during the reaction process. After 40 minutes of reaction, the pH value is 11. Add a solution made of 2.0g magnesium chloride and a small amount of water. At this time, the temperature is at 95°C, keep 95°C and continue stirring After reacting for 20 minutes, add a solution made of 0.5 g of aluminum sulfate, 0.3 g of calcium sulfate and a small amount of water, continue to react for 15 min, and filter while ...

Embodiment 3

[0045] Embodiment three uses the inventive method to prepare low-phosphorus vanadium liquid

[0046] This embodiment is acid leaching of vanadium-containing clinker in vanadium-precipitating wastewater. Take 900mL of vanadium precipitation wastewater after the calcification and roasting process, the concentration of sodium ions is less than 50g / L, heat it in a water bath to 50°C, adjust the pH value to 5, add 400g of clinker as shown in Table 2, continue to heat up and stir the reaction, the pH value is in the reaction process Start to rise continuously, adjust the pH value with sulfuric acid to keep it at 3.2 and react for 30 minutes, then add a solution made of 2.0g magnesium sulfate and a small amount of water. At this time, the reaction temperature is kept at about 70°C. The solution made of a small amount of water was continued to react for 15 minutes, and filtered while it was hot to obtain a filtrate, which was filtered after static aging for 5 hours to obtain a vanadiu...

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 preparing low-phosphorus vanadium liquid by using wastewater subjected to vanadium precipitation, belongs to the field of metallurgy, and aims to solve the problems that the wastewater subjected to vanadium precipitation is difficult to treat and high in cost, broaden the treatment way of the wastewater subjected to vanadium precipitation and prepare qualified low-phosphorus vanadium liquid. In the method, the wastewater subjected to vanadium precipitation is taken as a leaching agent of vanadium-containing clinker, ammonium ions and phosphate ions which are contained in the wastewater react with magnesium ions to form a complex precipitate and remove most of phosphorus, calcium salt, aluminum salt or iron salt is added to deeply remove the phosphorus, and the solution is filtered to obtain the low-phosphorus vanadium liquid. By the novel method for preparing the low-phosphorus vanadium liquid, the wastewater subjected to vanadium precipitation can be recycled, the vanadium liquid with qualified phosphorus content can be obtained in the leaching process, the leaching and phosphorus removing processes are simplified, the wastewater discharge pressure of vanadium production enterprises is relieved, and raw materials are saved.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a method for preparing low-phosphorus vanadium liquid by utilizing vanadium precipitation wastewater. Background technique [0002] Production of V with vanadium slag as raw material 2 o 5 In the technological process, the leaching process generally adopts three methods of acid leaching, alkali leaching, and water leaching to obtain vanadium-containing leachate. Generally, tap water or industrial water is used for leaching. This process will generate a large amount of industrial wastewater, especially vanadium precipitation wastewater. Vanadium wastewater mainly contains ammonium ions, sodium ions, vanadium chromium ions, etc. Due to the difficulty in treatment, it brings great environmental pressure to vanadium production enterprises. At present, there are two main treatment methods for vanadium precipitation wastewater: one is to discharge harmful elements (such as vanad...

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): C22B7/00C22B34/22
Inventor 伍珍秀彭毅孙朝晖刘丰强李龙鲜勇
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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