Green and clean preparation method of vanadium compound
A vanadium compound and green technology, applied in the field of vanadium compound preparation, can solve problems such as endangering human health, affecting water supply, and hidden dangers of living environment safety, and achieve the effect of avoiding pollution and green and clean production
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Embodiment 1
[0032] S1 Pulverize 1000g of coal gangue raw material (containing 1.0% vanadium), put it into a ball mill to make 200 mesh particles, then add 10g of 1% barite, and mix.
[0033] S2 is burned at 800°C for 2 hours, oxidized and burned in the air for 6 hours, and the product is leached with water after cooling;
[0034] S3 to S2 step leaching solution using 717 anion exchange resin to adsorb VO 4 3- , VO 4 3- Adsorption and enrichment on 717 anion exchange resin, pH 3.0, Ba 2+ Enter the solution, remove barium and remove impurities and purify;
[0035]S4 adds the strong alkali solution (10%) containing sodium hydroxide in the solution that S3 step obtains, makes it fully dissolve, makes the solution be in alkaline state all the time, strips the vanadium element and obtains VO 4 3- , adjust the pH to 13 to obtain a sodium vanadate solution containing about 10% vanadium, and then filter to remove a small amount of Fe that is insoluble in alkali 3+ , Mn 2+ 、Cr 3+ 、Ni 2+ 、...
Embodiment 2
[0040] S1 Pulverize 200g of vanadium-containing mud (containing 5% vanadium), put it into a ball mill to make 200-mesh particles, then add 12g of barium nitrate, mix and stir evenly.
[0041] S2 is burned at 800°C for 3 hours, ventilated and oxidized in the air for 6 hours, and the product is leached with water after cooling;
[0042] S3 to S2 step leaching solution using 717 anion exchange resin to adsorb VO 4 3- , VO 4 3- Adsorption and enrichment on 717 anion exchange resin, pH 3.5, Ba 2+ Enter the solution, remove barium and remove impurities and purify;
[0043] In S4, add 10% ammonia water into the solution obtained in step S3 to fully dissolve it so that the solution is always in an alkaline state, and strip the vanadium element to obtain VO 4 3- , adjust the pH to 13 to obtain a sodium vanadate solution containing about 10% vanadium, and then filter to remove a small amount of Fe that is insoluble in alkali 3+ , Mn 2+ 、Cr 3+ 、Ni 2+ 、Cu 2+ , SiO 2 and other ...
Embodiment 3
[0048] S1 Pulverize 350g of vanadium slag (containing 3% vanadium), put it into a ball mill to make 200 mesh particles, then add 8g of barite, mix and stir evenly.
[0049] S2 is ventilated and oxidized in air at 850°C for 11 hours, and the cooled product is leached with clean water;
[0050] S3 to S2 step leaching solution using 432 anion exchange resin to adsorb VO 4 3- , VO 4 3- Adsorption and enrichment on 432 anion exchange resin, pH 3.5, Ba 2+ Enter the solution, remove barium and remove impurities and purify;
[0051] In S4, add 10% ammonia water into the solution obtained in step S3 to fully dissolve it so that the solution is always in an alkaline state, and strip the vanadium element to obtain VO 4 3- , adjust the pH to 13 to obtain a sodium vanadate solution containing about 10% vanadium, and then filter to remove a small amount of Fe that is insoluble in alkali 3+ , Mn 2+ 、Cr 3+ 、Ni 2+ 、Cu 2+ , SiO 2 and other impurities.
[0052] S5 To the solution af...
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