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Method for recycling vanadium from acid vanadium-containing solution containing silicon and phosphorus

A solution and acidic technology, applied in the field of vanadium recovery, can solve the problems of few reports, difficulty in removing silicon and phosphorus, etc., and achieve the effects of reducing energy consumption, high recovery rate, and simplifying the process

Active Publication Date: 2014-04-16
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it is difficult to remove silicon and phosphorus in an acidic system, there are few reports on the method of separating silicon, phosphorus impurities and vanadium from an acidic solution containing silicon, phosphorus, and vanadium at the same time.

Method used

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  • Method for recycling vanadium from acid vanadium-containing solution containing silicon and phosphorus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a kind of like figure 1 Shown from containing silicon, the method for reclaiming vanadium in the acid vanadium-containing solution of phosphorus, may further comprise the steps:

[0026] (1) Take SiO 2 1.8g / L, P 2.89g / L, V 2 o 5 3.52g / L and 2.5L of acidic vanadium-containing solution with a pH value of 0.8, with solid Na 2 CO 3 Adjusting the pH value of the acidic vanadium-containing solution to 1.5;

[0027] (2) Flow the acidic vanadium-containing solution after pH adjustment through a weakly basic anion exchange resin (D301 resin) for adsorption. The adsorption contact time is 10 minutes (the adsorption process can be carried out at room temperature). After testing, V 2 o 5 The adsorption rate is 98.6%, SiO 2 The adsorption rate is 30.1%, and the P adsorption rate is 27.3%;

[0028] (3) Use NaOH solution with a concentration of 150g / L to desorb the D301 resin after step (2), and control the temperature at 35°C during desorption; after testing, V 2 o 5 The ...

Embodiment 2

[0033] a kind of like figure 1 Shown from containing silicon, the method for reclaiming vanadium in the acid vanadium-containing solution of phosphorus, may further comprise the steps:

[0034] (1) Take SiO 2 1.8g / L, P 2.89g / L, V 2 o 5 3.52g / L and 2.5L of acidic vanadium-containing solution with a pH value of 0.8, with solid Na2 CO 3 Regulating the pH value of the acidic vanadium-containing solution to 1.8;

[0035] (2) Flow the acidic vanadium-containing solution after pH adjustment through a weakly basic anion exchange resin (D314 resin) for adsorption. The adsorption contact time is 10 minutes (the adsorption process can be carried out at room temperature). After testing, V 2 o 5 The adsorption rate is 99.0%, SiO 2 The adsorption rate is 27.2%, and the P adsorption rate is 28.0%;

[0036] (3) Use NaOH solution with a concentration of 135g / L to desorb the D314 resin after step (2), and the temperature during desorption is controlled at 40°C; after testing, V 2 o 5...

Embodiment 3

[0041] a kind of like figure 1 Shown from containing silicon, the method for reclaiming vanadium in the acid vanadium-containing solution of phosphorus, may further comprise the steps:

[0042] (1) Take SiO 2 0.60g / L, P 4.82g / L, V 2 o 5 4. 2.5 L of 20 g / L acidic vanadium-containing solution with a pH value of 0.5, and adjust the pH value of the acidic vanadium-containing solution to 2.0 with solid NaOH under stirring conditions;

[0043] (2) Flow the acidic vanadium-containing solution after adjusting the pH value through a strongly basic anion exchange resin (D201 resin) for adsorption. The adsorption contact time is 15 minutes (the adsorption process can be carried out at room temperature). After testing, V 2 o 5 The adsorption rate is 99.2%, SiO 2 The adsorption rate is 20.1%, and the P adsorption rate is 28.5%;

[0044] (3) Use NaOH solution with a concentration of 120g / L to desorb the D201 resin after step (2), and control the temperature at 40°C during desorption...

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Abstract

The invention discloses a method for recycling vanadium from an acid vanadium-containing solution containing silicon and phosphorus. The method includes that a pH value of an acid vanadium-containing solution is adjusted in a range from 1.0 to 2.5, the acid vanadium-containing solution with an adjusted pH value passes through weak-base anion-exchange resins or strong-base anion exchange resins to be absorbed, a strong alkali solution is used to desorb the weak-base anion-exchange resins or the strong-base anion exchange resins after adsorption, soluble magnesium salt and / or calcium salt is used to purify a desorption solution after desorption and silicon to remove phosphorus in the solution, ammonium salt is used to perform vanadium precipitation on a purified solution obtained after purification, vanadium-containing precipitation obtained after vanadium precipitation is calcined, and high- purity vanadium-containing products are recycled. The method has the advantages that the technological process is simple, the operation is convenient, the energy consumption is low, the impurity removing effect is good, the product quality is high and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and metallurgy, and in particular relates to a method for recovering vanadium from a vanadium-containing solution. Background technique [0002] Industrially, the methods for extracting vanadium from stone coal mines, clay vanadium ores, vanadium-containing solid waste and other vanadium-containing resources and their roasted products are mainly wet methods, and acid leaching agents (such as sulfuric acid, hydrochloric acid, nitric acid, etc.) are mostly used for leaching. The vanadium-containing solution extracted by acid leaching (i.e. acidic vanadium-containing solution) has high impurity content, especially the high content of silicon and phosphorus in the solution, which not only directly affects the smooth progress of the subsequent vanadium extraction process, but also affects the final The quality of vanadium products. For example, when the content of silicon and phosphorus in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/22C22B3/24C22B3/44
CPCY02P10/20
Inventor 邢学永宁顺明佘宗华蒙在吉李肇佳刘建忠陈文勇黄臻高封志敏万洪强赵强王文娟吴江华
Owner CHANGSHA RES INST OF MINING & METALLURGY