Preparation method of vanadium slag sodium treatment pellets
A vanadium slag and sodiumization technology is applied in the field of improving the strength of vanadium slag sodiumized pellets, and can solve the problems of vanadium slag sodiumized pellet strength without further technical description, sacrificing vanadium recovery rate, uneven mixing, and the like, Achieving the effect of wide application range, improved strength and uniform particle size
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[0024] The invention provides a method for preparing vanadium slag sodiumized pellets. The method comprises the following steps: mechanically activating the inorganic sodiumizing agent and vanadium slag powder according to the sodium ion in the inorganic sodiumizing agent and the vanadium slag powder. Mix the molar ratio of vanadium in the range of 1:1-4:1 to obtain the mixture 1, spray the binder A into the mixture 1 and reactivate to obtain the mixture 2 with a water content of 2-6%; mix the mixture 2 Add into the pelletizing machine, spray binder B, make wet pellets after pelletizing, and obtain vanadium slag sodiumized pellets after drying and dehydration; the particle size of the inorganic sodiumizing agent is less than 0.6mm; the vanadium slag fine powder The particle size is less than 0.125mm. The particle sizes of the organic sodium agent and vanadium slag fine powder are respectively less than 0.6mm and 0.125mm. If the particle size is too large, the two are easy to a...
Embodiment 1
[0043] Get 1000g of converter vanadium slag fine powder and 98.35g of anhydrous sodium carbonate in a moistening mill for 30min, mix to obtain mixture 1, place mixture 1 in the mixer and spray 60g of mass fraction into 10% sodium carbonate solution, after continuing to activate for 30 minutes, a mixture 2 with a water content of 6% was obtained. Mixture 2 is placed in the disc pelletizer, the angle of the control disc is 30°, the rotating speed is 20r / min, the solution containing 5% sodium hydroxide solution and 2% sodium carboxymethyl cellulose is sprayed on In the mixture 2, wet pellets were obtained after 4 minutes of pelletizing. The compressive strength of the wet pellets was 20N, and the drop strength was 5 times / piece. The wet pellets were dried at 100°C for 2 hours, and the vanadium slag was obtained after drying. The compressive strength of the pellets, vanadium slag sodium pellets is 50N, and the drop strength of the pellets after drying is 10 times / piece.
Embodiment 2
[0045] Get 1000g of converter vanadium slag fine powder and 194.2g of anhydrous sodium carbonate in a moistening mill for 30min, mix to obtain mixture 1, place mixture 1 in the mixer and spray 40g of mass fraction into After 5% sodium carbonate solution was activated for 20 minutes, the mixture 2 with a water content of 3.3% was obtained. The mixture 2 is placed in the disc pelletizer, the angle of the control disc is 45°, the rotating speed is 10r / min, and the solution containing 10% sodium hydroxide solution and 0.1% sodium carboxymethyl cellulose is sprayed on the In the mixture 2, the wet pellets were obtained after 6 minutes of pelletizing. The compressive strength of the wet pellets was 30N, and the drop strength was 8 times / piece. The wet pellets were dried at 200°C for 1 hour, and the vanadium slag was obtained after drying. The compressive strength of the pellets, vanadium slag sodium pellets is 100N, and the drop strength of the pellets after drying is 15 times / piece...
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