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Method for preparing low-silicon low-calcium low-aluminium vanadium liquid

A technology of vanadium liquid and low calcium, which is applied in the field of leaching vanadium extraction, can solve the problems of uninvolved, unproduced, high purity and concentration of vanadium liquid, etc., and achieve low cost, simple and easy-to-use process, and wide range of raw materials Effect

Inactive Publication Date: 2013-11-27
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this process is limited to the purification of vanadium liquid after roasting flow and ion exchange of vanadium ore, and has high requirements on the purity and concentration of vanadium liquid, and does not involve vanadium slag clinker leaching vanadium liquid, vanadium ore directly leaching vanadium Vanadium solution obtained by dissolving vanadium solution and crude vanadium product and other vanadium solution with complex composition; and low-silicon, low-calcium and low-alumina (for example, Si<0.005g / L, Ca<0.005g / L, Al<0.005g / L, Al< 0.01g / L) vanadium solution

Method used

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  • Method for preparing low-silicon low-calcium low-aluminium vanadium liquid
  • Method for preparing low-silicon low-calcium low-aluminium vanadium liquid
  • Method for preparing low-silicon low-calcium low-aluminium vanadium liquid

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Add 300mL of common vanadium solution in Table 1 to a 500mL clean beaker, stir, heat to boiling, adjust the pH value of the solution system to 8, add 10g of impurity remover A (4g of aluminum sulfate and 6g of magnesium sulfate), react for 1h, Cool to room temperature, filter, after obtaining the filtrate, adjust the pH value of the solution system to 11, add 1g of impurity remover B (sodium oxalate), react for 1h, cool to room temperature, filter, and obtain Si content of 0.005g / L, Ca content The vanadium liquid is 0.005g / L and Al content is 0.01g / L.

[0024] Table 2 shows the main chemical components of the vanadium-containing leaching solution used in Example 2 below.

[0025] Table 2 The main chemical composition table of the vanadium-containing leaching solution used in Example 2 / g L -1

[0026]

example 2

[0028] Add 300mL of common vanadium solution in Table 2 to a 500mL clean beaker, stir, heat to boiling, adjust the pH value of the solution system to 9, add 3g of impurity remover A (1.5g of aluminum sulfate and 1.5g of iron sulfate), and react 1h, cooled to normal temperature, filtered, after obtaining the filtrate, adjusted the pH value of the solution system to 9, added 2g of impurity remover B (potassium oxalate), reacted for 1h, cooled to normal temperature, filtered, obtained the Si content of 0.005g / L, Vanadium solution with Ca content of 0.005g / L and Al content of 0.01g / L.

[0029] Table 3 shows the main chemical components of the vanadium-containing leaching solution used in Example 3 below.

[0030] Table 3 Main chemical composition table of the vanadium-containing leaching solution used in Example 3 / g L -1

[0031]

example 3

[0033] Add 300mL of common vanadium solution in Table 3 to a 500mL clean beaker, stir, heat to boiling, adjust the pH value of the vanadium solution to 11, add 20g of impurity remover A (8g of aluminum sulfate and 12g of magnesium sulfate), react for 1h, and cool to normal temperature, filter, and after obtaining the filtrate, adjust the pH value of the solution system to 10; add 8g of impurity remover B (a solution made of sodium oxalate and potassium oxalate), react for 1h, cool to normal temperature, and filter to obtain a Si content of 0.005 g / L, a vanadium solution with a Ca content of 0.005 g / L and an Al content of 0.01 g / L.

[0034] In summary, the method of the present invention can use ordinary vanadium liquid to make low-silicon, low-aluminum, low-calcium (for example, Si element content is lower than 0.005g / L, Ca element content is lower than 0.005g / L and Al element content is lower than 0.01g / L) vanadium-containing solution. Moreover, the method of the present inv...

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Abstract

The invention provides a method for preparing low-silicon low-calcium low-aluminium vanadium liquid, which comprises the following steps of dissolving a vanadium-containing material, and filtering to obtain a vanadium-containing solution; heating the vanadium-containing solution to 60 DEG C for boiling; adjusting the pH value of the vanadium-containing solution to 8-11; adding a first impurity removal agent into the vanadium-containing solution, and filtering to obtain a first purified solution; adjusting the pH value of the first purified solution to 8-11, and adding a second impurity removal agent into the first purified solution, wherein the first impurity removal agent is one or more of aluminium sulphate, aluminium sulphate, aluminium nitrate, iron sulphate, iron chloride, iron nitrate, magnesium sulphate, magnesium sulphate and magnesium nitrate, and the second impurity removal agent is soluble oxalate; and after the reaction is over, cooling and filtering to obtain vanadium liquid in which the Si content is lower than 0.005g / L, the Ca content is lower than 0.005g / L and the Al content is lower than 0.01g / L. The method provided by the invention can be used for effectively removing impurities such as silicon, calcium, aluminium and the like in the vanadium liquid; and the technology is simple and easy to use, the application range of the raw materials is wide, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of vanadium extraction by leaching, and specifically relates to a method for preparing a low-silicon, low-calcium, and low-aluminum vanadium liquid. Background technique [0002] Generally, low-calcium, low-aluminum, and low-silicon vanadium products are vanadium products with higher added value. It is used in different industries and has different technical requirements. It can usually be used in metallurgy, chemical industry, medicine, energy, environmental protection, aerospace and other industries, and has an irreplaceable role. [0003] The patent document with the publication number CN101182036A discloses a process for preparing high-purity vanadium pentoxide by removing impurities from high vanadium. In this process, hydrochloric acid is used to adjust the pH value of the analysis solution to 8-9, aluminum sulfate is used as a purifying agent, and the pH value of the filtrate is adjusted with hydrochl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/44C22B34/22
CPCY02P10/20
Inventor 殷兆迁孙朝晖李千文
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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