Method for carrying out phosphorus removal on acidic vanadium-containing solution

An acidic, solution-based technology, which is applied in the field of phosphorus removal from acidic vanadium-containing solutions, can solve the problems of unfavorable recycling of vanadium-extracting residues, high phosphorus concentration in acidic vanadium-containing solutions, and high phosphorus content in vanadium-containing residues, and achieves good phosphorus removal effect, phosphorus Large concentration range and complete precipitation effect

Active Publication Date: 2015-09-09
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

[0004] However, when the above two methods of phosphorus removal are applied to acidic vanadium-containing solutions, there are certain problems: the pH of the acidic vanadium-containing solution obtained by acid leaching of vanadium slag calcification and roasting clinker is generally in the range of 2.8-3.5, and when adjusted to 4.0-4.5 A large amount of precipitation will lead to loss of vanadium; if iron salt is used to remove phosphorus, the added ferric ions will form iron vanadate precipitation with van

Method used

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Examples

Experimental program
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Example Embodiment

[0025] Example 1

[0026] Get 1000mL acid vanadium-containing solution (pH=2.86, TV=1.94g / L, P=1.76g / L), add the hydrogen peroxide aqueous solution 30mL (acidic vanadium-containing solution: H 2 O 2 =100ml: 0.9g) and 11.4g of zirconium sulfate (molar ratio Zr / P=0.7), stirred at 50°C for 30min; adjusted the pH of the solution with ammonium bicarbonate = 3.5, stirred for 60min, left standing for 2h after the reaction, and filtered to obtain a filtrate, Wherein TV=1.89g / L, P=0.027g / L (vanadium recovery rate 99%, phosphorus removal rate 98.5%).

Example Embodiment

[0027] Example 2

[0028] Get 1000mL acid vanadium-containing solution (pH=3.2, TV=6.72g / L, P=1.26g / L), add the hydrogen peroxide aqueous solution 10mL (acidic vanadium-containing solution: H 2 O 2 =100ml: 0.3g) and 13.9g of zirconium sulfate (molar ratio Zr / P=1.2), stirred at 40°C for 15min; adjusted the pH of the solution with ammonium carbonate=3.0 and stirred for 30min, after the reaction was completed, let stand for 2h, and filtered to obtain a filtrate, wherein TV=6.64g / L, P=0.022g / L (vanadium recovery rate 99.3%, phosphorus removal rate 98.2%).

Example Embodiment

[0029] Example 3

[0030] Get 1000mL acid vanadium-containing solution (pH=3.44, TV=22.08g / L, P=0.47g / L), add the hydrogen peroxide solution 50mL (acidic vanadium-containing solution: H 2 O 2 = 100ml: 1.5g) and 6.5g of zirconium sulfate (molar ratio Zr / P=1.5), stirred at 30°C for 5min; adjusted pH=2.7 with ammonia, stirred for 10min, left standing for 2h after the reaction, and filtered to obtain a filtrate, in which TV =21.31g / L, P=0.025g / L (vanadium recovery rate 98.9%, phosphorus removal rate 94.4%).

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Abstract

The invention relates to the field of phosphor removal of an acidic vanadium-containing solution, and discloses a method for carrying out phosphorus removal on the acidic vanadium-containing solution, wherein the method comprises the following step: under the condition with a pH value of 2.5-3.5, carrying out a contact process on the acidic vanadium-containing solution, hydrogen peroxide and zirconium sulfate. According to the method for carrying out phosphorus removal on the acidic vanadium-containing solution disclosed by the invention, the allowed concentration range of the acidic vanadium-containing solution is large, and the phosphor removal can be effectively carried out on the acidic vanadium-containing solution; moreover, the vanadium loss is relatively small when the phosphor removal is carried out.

Description

technical field [0001] The invention relates to a method for removing phosphorus from an acidic vanadium-containing solution. Background technique [0002] Vanadium slag is the main raw material for the preparation of vanadium oxide. At present, there are two main industrialized vanadium extraction processes, namely, sodium roasting and vanadium extraction process and calcification roasting vanadium extraction process. The vanadium slag used in industrial production is mainly ordinary vanadium slag, which is characterized by low CaO content, generally CaO / V 2 O 5 ≤0.15. However, for CaO / V 2 O 5 For high-calcium and high-phosphorus vanadium slag ≥0.16 and P≥0.06%, it is not suitable to use sodium roasting-water leaching vanadium slag due to the high CaO content leading to a significant reduction in roasting conversion rate; The vanadium process treatment of high calcium and high phosphorus vanadium slag, first of all, it is necessary to solve the technical problem of dee...

Claims

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Application Information

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IPC IPC(8): C22B3/44C22B34/22
CPCY02P10/20
Inventor 付自碧高官金何文艺申彪彭毅张林
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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