Method for extracting V2O5 from vanadium-containing shale by using chlorination evaporation
A chlorination volatilization, V2O5 technology, applied in the field of V2O5 extraction, can solve the problems of unenvironmental protection, uneconomical, poor treatment effect, etc., achieve the effects of low cost, improved chlorination performance, and reduced chlorine consumption
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Embodiment 1
[0022] A method for extracting V from vanadium-bearing shale by chlorination volatilization 2 o 5 method, the process steps are as figure 1 Shown:
[0023] (1) First crush the vanadium-containing shale raw ore to less than 3mm, decarburize at 650-700°C for 50-60 minutes, and decarburize until the carbonaceous content is below 2wt% of the vanadium-containing shale raw ore, and obtain decarburized Shale, and then decarburized shale is ground to a particle size of less than 0.178mm;
[0024] (2) In a mixed gas atmosphere of dry chlorine and air, heat the decarburized shale with a particle size of less than 0.178mm to 900~1000°C for 30~60min, and chlorinate and roast it at 900~1000°C for 60~ 90min;
[0025] (3) performing one-stage condensation and two-stage condensation on the chlorinated volatile matter produced in the chlorination roasting process, to obtain vanadium-containing chloride;
[0026] (4) Dissolving the vanadium-containing chloride obtained in the second-stage ...
Embodiment 2
[0030] A method for extracting V from vanadium-bearing shale by chlorination volatilization 2 o 5 method, its treatment process such as figure 1 Shown:
[0031] (1) First crush the vanadium-containing shale raw ore to less than 3mm, decarburize at 650-700°C for 50-60 minutes, and decarburize until the carbonaceous content is below 2wt% of the vanadium-containing shale raw ore, and obtain decarburized Shale, and then decarburized shale is ground to a particle size of less than 0.178mm;
[0032] (2) In a mixed gas atmosphere of dry chlorine and nitrogen, heat the decarburized shale with a particle size of less than 0.178mm to 900~1000°C for 30~60min, and chlorinate and roast it at 900~1000°C for 60~ 90min;
[0033] (3) performing one-stage condensation and two-stage condensation on the chlorinated volatile matter produced in the chlorination roasting process, to obtain vanadium-containing chloride;
[0034] (4) Dissolving the vanadium-containing chloride obtained in the sec...
Embodiment 3
[0038] A method for extracting V from vanadium-bearing shale by chlorination volatilization 2 o 5 method, its treatment process such as figure 1 Shown:
[0039] (1) First crush the vanadium-containing shale raw ore to less than 3mm, decarburize at 650-700°C for 40-50 minutes, and decarburize until the carbonaceous content is below 2wt% of the vanadium-containing shale raw ore, and obtain decarburized Shale, and then decarburized shale is ground to a particle size of less than 0.178mm;
[0040] (2) In a mixed gas atmosphere of dry chlorine and air, heat up the decarburized shale with a particle size of less than 0.178mm to 800~900°C for 30~60min, and chlorinate and roast at 800~900°C for 40~ 80min;
[0041] (3) performing one-stage condensation and two-stage condensation on the chlorinated volatile matter produced in the chlorination roasting process, to obtain vanadium-containing chloride;
[0042] (4) dissolving the vanadium-containing chloride obtained by the two-stage ...
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