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Technique for extracting vanadium pentoxide by the pulp resin method

A technology of vanadium pentoxide and resin, which is applied in the field of extracting vanadium pentoxide by pulp resin method, can solve the problem of reducing the probability of contact between resin and vanadium ions, coarse-grained ore cannot be completely separated from precious liquid, and continuous production cannot be achieved To achieve the effect of facilitating production and maintenance, increasing the leaching speed and leaching rate, and shortening the leaching time

Inactive Publication Date: 2008-10-15
新疆汇友矿业设计研究院(有限公司)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can increase the recovery rate by more than 10%, there is still the problem of liquid-solid sedimentation separation, coarse-grained ore cannot be completely separated from precious liquid, and coarse-grained ore takes away a part of vanadium ions
Moreover, the resin is loaded with a net basket to reduce the probability of contact between the resin and vanadium ions, causing the resin to absorb vanadium ions at a slow rate, and the resin adsorption saturation is low. This process fails to achieve continuous production.

Method used

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  • Technique for extracting vanadium pentoxide by the pulp resin method

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Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1: A kind of pulp resin method extracts vanadium pentoxide process, first the stone coal vanadium ore roasting clinker is wet-grinded to a fineness of less than 0.1mm with a ball mill, and then the ore powder is magnetically separated with a magnetic separator, The iron filings and magnetic reducing substances in the ore powder are selected to reduce the amount of oxidant in the subsequent operation, and the underflow of the magnetic separation enters the water immersion resin adsorption operation. After wet-grinding the roasted clinker with a grinding machine, the particle size classification can be carried out with a spiral classifier or a hydrocyclone, so that the amount of ore powder with a fineness of less than 0.074mm in the ore powder obtained after wet grinding accounts for at least 70% of the total amount of ore powder is produced. Keep the pulp concentration at 25%, and the pulp enters the water immersion resin adsorption stirring tank, and adds D20...

Embodiment 2

[0010] Embodiment 2: A kind of pulp resin method extracts vanadium pentoxide process, first the stone coal vanadium ore roasting clinker is wet-grinded to a fineness of less than 0.1mm with a ball mill, and then the ore powder is magnetically separated with a magnetic separator, The iron filings and magnetic reducing substances in the ore powder are selected to reduce the amount of oxidant in the subsequent operation, and the underflow of the magnetic separation enters the water immersion resin adsorption operation. After the roasted clinker is wet-grinded with a grinding machine, a spiral classifier can be used for particle size classification, so that the amount of ore powder with a fineness of less than 0.06mm in the ore powder obtained after wet grinding accounts for at least the total amount of the ore powder. 80% of. Keep the pulp concentration at 35%, and the pulp enters the water immersion resin adsorption stirring tank, and adds 307 weakly basic anions [Cl - ] type r...

Embodiment 3

[0011] Embodiment 3: A kind of pulp resin method extracts vanadium pentoxide process, first the stone coal vanadium ore roasting clinker is wet-grinded to a fineness of less than 0.1mm with a ball mill, and then the ore powder is magnetically separated with a magnetic separator, The iron filings and magnetic reducing substances in the ore powder are selected to reduce the amount of oxidant in the subsequent operation, and the underflow of the magnetic separation enters the water immersion resin adsorption operation. After wet-grinding the roasted clinker with a grinding machine, a hydrocyclone can be used for particle size classification, so that the amount of ore powder with a fineness less than 0.074mm in the ore powder obtained after wet grinding accounts for at least 90% of the amount. Keep the pulp concentration at 40%, put the pulp into the water immersion resin adsorption stirring tank, add D201 weakly basic anion [Cl -] type resin is used for water leaching and adsorp...

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Abstract

This invention discloses a resin method for extracting V2O5 from ore slurry. The method comprises: (1) wet-milling torrefied ore to fineness less than 0.1 mm, keeping the slurry concentration at 25-40%, introducing into a water-leaching stirring tank, leaching, adding anionic resin 7-15 wt.% of the ore into the water-leaching stirring tank to adsorb vanadium ions, controlling the concentration below 0.1 g / L, and desorbing the saturated resin with alkali solution to obtain desorbed pregnant solution; (2) keeping the ore slurry concentration at 25-40%, adding acid solution, acid-leaching in an acid-leaching stirring tank, adding oxidant and 307 resin 7-15 wt.% of the ore, adsorbing vanadium ions, controlling the concentration below 0.1 g / L, desorbing the saturated resin with alkali solution to obtain desorbed pregnant solution; (3) adding ammonium salts into the desorbed pregnant solutions respectively to precipitate vanadium, torrefying and refining. The method has such advantages as reasonable process, high leaching and adsorption speed, high leaching rate, high adsorption saturation degree, no need for solid-liquid separation, and convenient production control.

Description

technical field [0001] The invention relates to a process for extracting vanadium from stone coal vanadium pulp by using resin, in particular to a process for extracting vanadium pentoxide by pulp resin method. Background technique [0002] At present, the common production process for extracting refined vanadium from stone coal vanadium ore is raw ore-crushing-balling-sodium roasting-leaching-resin adsorption-resin desorption-ammonium chloride precipitation of vanadium-burning to extract refined vanadium. The announcement number is CN1235201A, and the publication date is November 17, 1999. The Chinese invention patent application publication discloses a method for extracting vanadium by resin adsorption, which is based on the roasting and leaching methods in the existing vanadium extraction process. , the macroporous weakly basic anion exchange resin packed in a net basket is directly immersed in the leached vanadium-containing pulp to absorb vanadium, and then desorb vanad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/24C22B3/06C22B3/44C22B1/14C22B34/22
CPCY02P10/20
Inventor 洪声
Owner 新疆汇友矿业设计研究院(有限公司)