Method for separating tantalum and niobium from red mud by utilizing ultrasonic wave
A technology of ultrasonic wave and red mud, applied in the direction of improving process efficiency, etc., can solve the problems of high environmental impact pressure, difficult waste treatment, and many processing processes, so as to improve quality, benefit environmental protection, and simple extraction process Effect
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Embodiment 1
[0060] Put 30g of red mud and 900ml of distilled water in a 2L triangular flask inserted into the thermostat, and mix 225ml of hydrochloric acid (HCl) and 75ml of nitric acid (HNO3), and heat the thermostat to 75°C , while applying ultrasonic waves at a frequency of 36.7kHz and an output power of 280W, it reacted for 6 hours. Afterwards, the reactant is filtered, and the red mud residue and the extraction filtrate are separated and recovered respectively. Thereafter, the recovered red mud residue was washed with distilled water, and dried at 60° C. for 12 hours. At this time, the extraction filtrate, which is a solution containing extracted tantalum and niobium, was analyzed using ICP (PerkinElmer, OPTIMA 2100DV).
Embodiment 2
[0062] An experiment was carried out in the same manner as in Example 1, except that 300 ml of hydrochloric acid (HCl, 35%) was used instead of the mixed acid of hydrochloric acid and nitric acid and mixed as an acidic solution.
Embodiment 3
[0064] Experiments were carried out in the same manner as in Example 1, except that 300 ml of nitric acid (HNO3, 65%) was used as an acidic solution instead of the mixed acid of hydrochloric acid and nitric acid.
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