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Method for reducing content of kalium and sodium in vanadium solvent extraction circulation liquid

A technology of circulating liquid and sodium content, which is applied in the field of sodium content and reducing potassium in the circulating liquid for vanadium extraction and leaching, which can solve the problems of reducing potassium and sodium content, and the solution cannot be recycled, and achieve the effect of avoiding the problem of emission pollution

Inactive Publication Date: 2009-01-14
PANGANG GROUP RESEARCH INSTITUTE CO LTD +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the solution cannot be recycled due to too high content of potassium and sodium in the leaching circulation liquid for vanadium extraction, the present invention provides a method for reducing the content of potassium and sodium in the leaching circulation liquid for vanadium extraction

Method used

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  • Method for reducing content of kalium and sodium in vanadium solvent extraction circulation liquid

Examples

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Effect test

example 1

[0023] Get the vanadium extraction leaching solution of 1200mL (the Na in the solution + The concentration is 20.7g / L, K + The concentration is 3.1g / L, SO 4 2- Concentration is 34.2g / L), adjust the pH value of the solution to 1.7 with concentrated sulfuric acid; water bath is heated to 95 ℃, add 580g ferric sulfate under the condition of stirring, and use calcium hydroxide to control the pH value of the solution at 1.4~ 1.9; after constant temperature reaction for 60 minutes, adjust the pH value of the solution to 3.8; filter to obtain 962 mL of filtrate. After analysis, the main components of the filtrate are: Na + The concentration is 2.4g / L, K + The concentration is 0.3g / L, SO 4 2- The concentration of 1.7g / L. The filtrate is returned to the leaching process for recycling.

example 2

[0025] Get the vanadium extraction leaching solution of 1600mL (the Na in the solution + The concentration is 34.5g / L, SO 4 2- Concentration is 53.1g / L), adjust the pH value of the solution to 2.2 with concentrated sulfuric acid; water bath is heated to 92 ℃, add 1290g iron sulfate under the condition of stirring, and use calcium hydroxide to control the pH value of the solution at 1.4~ 1.9; after constant temperature reaction for 120 minutes, adjust the pH value of the solution to 6.0; filter to obtain 1076 mL of filtrate. After analysis, the main components of the filtrate are: Na + The concentration is 2.7g / L, SO 4 2- The concentration of 0.3g / L. The filtrate is returned to the leaching process for recycling.

example 3

[0027] Get the vanadium extraction leaching solution of 2000mL (the Na in the solution + The concentration is 30.8g / L, SO 4 2- Concentration is 49.8g / L), adjust the pH value of the solution to 2.0 with concentrated sulfuric acid; water bath is heated to 95 ℃, add 1550g ferric sulfate under the condition of stirring, and use calcium hydroxide to control the pH value of the solution at 1.4~ 1.9; after constant temperature reaction for 90 minutes, adjust the pH value of the solution to 4.0; filter to obtain 1320 mL of filtrate. After analysis, the main components of the filtrate are: Na + The concentration is 2.5g / L, SO 4 2- The concentration of 1.5g / L. The filtrate is returned to the leaching process for recycling.

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Abstract

The invention discloses a method for reducing the potassium and sodium content in a vanadium extraction leaching circulating liquid, which comprises the following steps: the pH value in the vanadium extraction leaching circulating liquid is adjusted with acid to maintain the vanadium extraction leaching circulating liquid within the acidic range; the vanadium extraction leaching circulating liquid is heated and stirred; when the vanadium extraction leaching circulating liquid reaches a reaction temperature, a potassium and sodium removing agent is added in the vanadium extraction leaching circulating liquid to make the potassium and sodium in the vanadium extraction leaching circulating liquid react with the potassium and sodium removing agent; and when the reaction is ended, the vanadium extraction leaching circulating liquid is filtrated.

Description

technical field [0001] The invention relates to a method for reducing the content of potassium and sodium in the leaching circulating liquid for extracting vanadium, in particular to a method for reducing the content of potassium and sodium in the acid leaching-ion exchange circulating liquid for low-grade vanadium raw materials. Background technique [0002] At present, vanadium products obtained by extracting vanadium from low-grade vanadium raw materials in China have occupied a certain market share, which has had a great impact on domestic vanadium production. Since the pollution to the environment is relatively serious when producing vanadium products from low-grade vanadium raw materials, the production of vanadium products from low-grade vanadium raw materials is greatly restricted. Among the environmental pollution problems caused by the production of vanadium products, wastewater pollution is one of the more serious problems, and more than 90% of the wastewater is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22
Inventor 付自碧孙朝晖彭毅张帆张林边悟邓杰博陈海军
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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