Method for electrolyzing vanadium slurry and extracting vanadium pentexide using film
A technology of vanadium pentoxide and vanadium ore is applied in the direction of improving process efficiency, photographing technology, instruments, etc., which can solve the problems of large occupied site area, large investment in production equipment, low recovery rate of vanadium, etc., and achieves small occupied site area. , The effect of saving equipment investment and saving reaction time
Inactive Publication Date: 2008-10-01
襄阳中经九丰矿业科技有限公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] For a preferred embodiment see figure 1 , the method steps of producing vanadium pentoxide by electric field decomposition of vanadium ore slurry membrane extraction:
[0034] Step 1, the ore is crushed, and the vanadium ore is ground to 100 to 250 meshes.
[0035] Step 2, use 2-4N dilute sulfuric acid or use 10-15% soda ash solution and mineral powder ratio to make the liquid and solid ratio 1: 1.5-2;
[0036] A), sulfuric acid system
[0037] Fe(VO 3 ) 2 +2H 2 SO 4 +xH 2 O=(VO 2 ) 2 SO 4 +FeSO 4 +x+2H 2 O;
[0038] Ca(VO 3 ) 2 +2H 2 SO 4 +xH 2 O=(VO 2 ) 2 SO4+CaSO4↓+x+2H 2 O.
[0039] B), soda ash system
[0040] Ca(VO 3 ) 2 +Na 2 CO 3 +xH 2 O=2NaVO 3 +CaCO 3 ↓+xH 2 O.
[0041] Fe(VO 3 ) 2 +Na 2 CO 3 +xH 2 O=2NaVO 3 +FeO↓+CO 2 ↑+xH 2 O.
[0042] Step 3 see figure 2 , image 3 , Decompose the electric field pulp, put the above pulp into the electric field decomposition tank 10, use a molten salt adjustable transformer with a v...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(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