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Method for electrolyzing vanadium slurry and extracting vanadium pentexide using film

A technology of vanadium pentoxide and vanadium ore, which is applied to the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems of large investment in production equipment, large occupied site area, and long production cycle, so as to save equipment investment and improve The recovery rate and the effect of simple equipment

Inactive Publication Date: 2007-08-01
襄阳中经九丰矿业科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for the production of vanadium pentoxide by electric field decomposition of vanadium ore slurry diaphragm extraction, to solve the serious pollution of the existing vanadium extraction method, long production cycle, high energy consumption, large investment in production equipment, large occupied site area, and high vanadium pentoxide. The problem of low recovery rate; and solve the problems of waste water, waste gas discharge and water recycling in the production process

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  • Method for electrolyzing vanadium slurry and extracting vanadium pentexide using film
  • Method for electrolyzing vanadium slurry and extracting vanadium pentexide using film
  • Method for electrolyzing vanadium slurry and extracting vanadium pentexide using film

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Embodiment Construction

[0032] Preferred embodiment is referring to Fig. 1, and this electric field decomposes the method step of vanadium ore slurry membrane extraction production vanadium pentoxide:

[0033] Step 1, the ore is crushed, and the vanadium ore is ground to 100 to 250 meshes.

[0034] Step 2, using 2 to 4 equivalents of dilute sulfuric acid or using 10 to 15% soda ash solution to the mineral powder ratio to make the liquid to solid ratio 1: 1.5 to 2;

[0035] A), sulfuric acid system

[0036] Fe(VO 3 ) 2 +2H 2 SO 4 +XH 2 O(VO 2 ) 2 SO 4 +FeSO 4 +X+2H 2 O;

[0037] Ca(VO 3 ) 2 +2H 2 SO 4 +XH 2 O=(VO 2 ) 2 SO4+CaSO4↓+X+2H 2 O.

[0038] B), soda ash system

[0039] Ca(VO 3 ) 2 +Na 2 CO 3 +XH 2 O=2NaVO 3 +CaCO 3 ↓+XH 2 O.

[0040] Fe(VO 3 ) 2 +Na 2 CO 3 +XH 2 O=2NaVO 3 +FeO↓+CO 2 ↑+XH 2 O.

[0041] Step 3 see Fig. 2 and Fig. 3, the electric field pulp is decomposed, put the above pulp into the electric field decomposition tank 10, the power supply adop...

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Abstract

The invention relates to a method for preparing vanadic anhydride through electric field disintegrating vanadium ore diaphragm extraction, comprising following steps: disintegrating vanadium ore, grinding into vanadium- containing powdered ore of 100- 250 order; mixing vanadium- containing slurry with liquid and solid ratio being 1: 1.5 - 2 with vanadium- containing powdered ore and electrolytic solution; putting vanadium- containing slurry into alternating current field decomposer for electrolysis, the voltage of electric field is 0 -110 voltage, current is 0- 3000 A, the discharging disintegrating time is 30- 90 minutes, and stopping when vanadium- containing slurry becomes into solid; adding water for diluting and extracting vanadium with diaphragm; feeding got organic phase for teschemacherite back extraction, adding ammonium salt into vanadium- containing liquid, heating and stirring, cooling and aging, getting ammonium vanadate and water solution. The invention is characterized by short production cycle, no pollution, low energy consumption, small investment for production device, small occupying area and high vanadium recovering rate.

Description

(1) Technical field [0001] The invention relates to a wet extraction method of rare metal vanadium, in particular to a method for producing vanadium pentoxide. (2) Background technology [0002] my country is rich in vanadium resources, and there are more than 70 proven vanadium minerals. And the existing method of extracting vanadium pentoxide mainly adopts roasting from vanadium mineral, and its main production method step has: add sodium salt roasting or add calcium oxide roasting, then through water leaching or dilute sulfuric acid leaching, filtration, purification, Precipitation of ammonium salt, filtration and drying, high temperature thermal decomposition and deamination, etc. The main steps of another method are as follows: vanadium ore is ground, mixed evenly with dilute sulfuric acid, sodium bisulfate, and sodium chlorate through a mixer, then pooled and sealed, soaked and settled, filtered and rinsed, purified and filtered, and then used 15% trioctylamine (TOA,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/00C22B3/28C25C1/06
CPCY02P10/20
Inventor 杨暖侯作义
Owner 襄阳中经九丰矿业科技有限公司
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