Method for extracting vanadium from vanadium-containing raw material

A technology for raw materials and slurry, applied in the field of vanadium extraction from new vanadium-containing raw materials, can solve the problems of poor adaptability of vanadium raw materials, difficult to realize industrialized production, difficult solid-liquid separation, etc., and achieves improved roasting effect and low equipment requirements. , the effect of low safety management requirements

Active Publication Date: 2015-03-04
边悟
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with "a method for extracting vanadium pentoxide from vanadium-containing steel slag", this method has more gravity separation processes, but still does not fundamentally solve the following problems: 1) only vanadium in the pickling solution is reclaimed, and the pickling residue , raffinate, ferrous sulfate, and other environmental protection issues are not involved; 2) only talk about strong acidic sulfuric acid to deal with steel slag, and all of them are relatively large liquid-solid treatment methods; 3) solid-liquid separation is difficult, Extraction and phase separation are very slow, and industrial production is not easy to realize
[0010] It can be seen from the above that the existing vanadium extraction process is not adaptable to changes in the composition of vanadium raw materials

Method used

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  • Method for extracting vanadium from vanadium-containing raw material

Examples

Experimental program
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Embodiment 1

[0055] Weigh 2350g of -200 mesh 1# steel slag and 4700g of ferrous sulfate heptahydrate, mix well, and then spray 700mL of water for granulation. The particle size is not controlled, and the diameter is basically between 1mm and 20mm. In the furnace, heat up to 910°C in 50 minutes, keep it warm for 100 minutes, take it out of the furnace to cool, and get 4503.6g of clinker a (this clinker will be used in some examples later), take 500g of clinker and grind it to -100 mesh, add it to 1500mL In water, add 50wt% sulfuric acid dropwise to carry out stirring and leaching at room temperature for 1 hour. During the leaching process, the pH value is controlled between 1.7 and 2.0, and 89.3mL of 50wt% sulfuric acid is consumed. The slurry is filtered and washed (washed four times with 1000mL water), and the TV is 5.90g. / L vanadium liquid 2342mL, the obtained TV is 0.35% residue 501.0g, the vanadium transfer leaching rate is 92.92% according to the liquid, and the vanadium transfer leac...

Embodiment 2

[0057] Weigh 500g of clinker a, with a diameter between 4mm and 20mm, without grinding, add it to 1500mL of water, add 50wt% sulfuric acid dropwise and carry out stirring and leaching at room temperature for 1 hour. During the leaching process, control the pH value between 1.7 and 2.0 and consume 50wt% sulfuric acid 611.8mL was filtered and washed (washed four times with 160mL of water), and 2920mL of vanadium liquid with a TV of 2.91g / L was obtained, and 487.0g of a residue with a TV of 1.48% was obtained. The leaching rate is 77.17%. The vanadium liquid was extracted with 15% N235 extractant (TBP5%, sulfonated kerosene 80%), the O / A ratio was 1:3, and the pH value was 1.96. After primary extraction of vanadium (artificial shaking for 5 minutes, static for 5 minutes), The raffinate contains TV0.11g / L. Before stripping, wash the organic phase with 20mL of 7% sulfuric acid, and carry out stripping with 200mL of 5% ammonia water. Adjust the pH of the stripping solution to 9.5. ...

Embodiment 3

[0059] Take 50g of clinker a and grind it to -100 mesh, add it to 100mL water, add 50wt% sulfuric acid dropwise to carry out stirring and leaching at room temperature for 1h, control the pH value between 2.5 and 3.5 during the leaching process, and filter and wash the slurry (wash four times with 100mL water ), to obtain residue and leaching solution, vanadium-containing leaching solution, the French domestic Rohm and Haas IRA96RF resin is used to adsorb the vanadium solution, and the remaining adsorption solution is used as the next leaching water (concentration of vanadium is lower than 1mg / L), after 10 cycles, the remaining adsorption The concentration of liquid Mn rose from 1.69g / L to 15.88g / L, and white magnesium sulfate crystals were continuously precipitated after 6 cycles. The manganese-containing 15.88g / L solution was extracted with an extractant containing 15% P204 (TBP5%, sulfonated kerosene 80%), the O / A ratio was 1:2, the pH value was 3.52, and the manganese was ex...

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Abstract

The invention discloses a method for extracting vanadium from a vanadium-containing raw material. The method comprises the following steps: a, uniformly mixing the vanadium-containing raw material, sulfuric acid and/or a sulfate, and water, so as to obtain a mixed material; b, performing aerobic roasting on the mixed material, so as to obtain a roasted clinker; c, performing leaching on the roasted clinker by using a leaching agent, so as to obtain a leaching slurry; and d, performing filtration separation on the leaching slurry, so as to obtain tails and a vanadium-containing solution. The method has relatively strong adaptability on composition variation of the vanadium-containing raw material, and helps to realize economic feasible industrial production and extraction of vanadium by using steel slag, vanadium slag and other vanadium-containing raw materials with relatively high calcium and magnesium content. The method is simple, practicable, low in equipment requirement, convenient to operate, low in material consumption and energy consumption, and easy for industrialization, and has extremely good economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of extracting vanadium from vanadium-containing raw materials, and in particular relates to a novel method for extracting vanadium from vanadium-containing raw materials. Background technique [0002] Vanadium is an important transition metal element. Because of its many excellent physical and chemical properties, it has a wide range of uses and is known as "metal vitamin" and "modern industrial monosodium glutamate". 85% of the world's vanadium is used in the steel industry, mainly as alloy additives to improve the strength, toughness, ductility and heat resistance of steel, and the other 15% of vanadium is used in aerospace, chemical, energy and other fields, especially vanadium batteries have Broad application prospects. [0003] At present, the direct raw materials for vanadium extraction mainly include: vanadium slag, steel slag, stone coal vanadium ore, vanadium-titanium magnetite concentrate, vanadiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B34/22
CPCY02P10/20
Inventor 边悟
Owner 边悟
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