Method for recovering vanadium in acidic vanadium precipitation waste liquid of oxygen-enriched roasting
A technology of oxygen-enriched roasting and vanadium precipitation, which is applied in the direction of improving process efficiency, can solve the problems of high cost of extraction methods, slow treatment, large environmental pollution, etc., so as to reduce water consumption and environmental pollution, realize no waste water discharge, The effect of easy industrialization promotion
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Embodiment 1
[0017] Select 100g of coconut shell activated carbon whose particle size is mostly 0.6 mm, put it into distilled water, clean it with ultrasonic waves for 15 minutes, take it out and put it into an acidic potassium permanganate solution containing potassium permanganate with a mass percent concentration of 5% for 24 hours. After 1 hour, rinse with distilled water twice, put it in an oven and dry it at 350°C for 3 hours. After cooling, add 10g styrene, 100g distilled water, 0.5g sodium dodecylsulfonate and stir evenly, then add 10g aminotrimethylene Base phosphonic acid, after heating up to 80°C and adding 0.1g of ammonium persulfate. Raise the temperature to 90°C and react for 5 hours, take it out and soak it in ethanol for 24 hours, after drying, put it into the waste liquid according to the volume ratio of activated carbon: vanadium precipitation waste liquid is 1:100, stir and react for 9 hours, filter, the metal in the obtained filtrate The impurity content is less than 0....
Embodiment 2
[0019] Select 100g of coconut shell activated carbon whose particle size is mostly 1.4 mm, put it into distilled water, clean it with ultrasonic waves for 20 minutes, take it out and put it into an acidic potassium permanganate solution containing potassium permanganate with a mass percent concentration of 7% for 30 minutes. After 1 hour, wash with distilled water twice, put it in an oven and bake at 400°C for 3 hours, then add 10g styrene, 100g distilled water, 0.8g sodium dodecylsulfonate and stir well, then add 20g aminotrimethylene Base phosphonic acid, after heating up to 80°C and adding 1g of ammonium persulfate. Raise the temperature to 90°C and react for 5 hours, take it out and soak it in ethanol for 30 hours, after drying, put it into the waste liquid according to the volume ratio of activated carbon: vanadium precipitation waste liquid: 2:100, stir and react for 10 hours, filter, and the metal in the obtained filtrate The impurity content is less than 0.019g / L, meet...
Embodiment 3
[0021] Select 100g of coconut shell activated carbon whose particle size is mostly 2.2 mm, put it into distilled water, clean it with ultrasonic waves for 25 minutes, take it out and put it into an acidic potassium permanganate solution containing potassium permanganate with a mass percent concentration of 8% for 36 hours. After 1 hour, rinse with distilled water for 3 times, put it in an oven and dry it at 450°C for 2 hours. After cooling, add 10g of styrene, 100g of distilled water, 1g of sodium dodecylsulfonate and stir evenly, then add 30g of aminotrimethylene Phosphonic acid, after heating up to 85°C and adding 1g of ammonium persulfate. Raise the temperature to 95°C and react for 4 hours, take it out and soak it in ethanol for 36 hours, after drying, put it into the waste liquid according to the volume ratio of activated carbon: vanadium precipitation waste liquid is 3:100, stir and react for 11 hours, then filter, the metal in the obtained filtrate The impurity content ...
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