Method for extracting rhenium from eluate of flue ash generated by baking enriched ore of molybdenum
A technology of flue ash and molybdenum concentrate, applied in the field of extracting rhenium from molybdenum concentrate roasting flue ash and eluent, can solve the problems of high impurity content, difficulty in obtaining purity, low recovery rate, etc., and achieve high purity Effect
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Embodiment 1
[0016] 1.1. Add water to the flue ash produced by roasting molybdenum concentrate, the liquid-solid ratio is 2:1, the temperature is 100°C, and the time is 2 hours, the rhenium in the flue ash is leached, and then the solid-liquid separation is carried out, and the solid is filtered out Impurities, obtain rhenium-containing leachate;
[0017] 1.2. Neutralize the leachate and eluent with ammonium bicarbonate to PH = 5, so that the molybdenum, iron, copper, lead and other metal ions in it form hydroxides, separate and precipitate from rhenium, and obtain the rhenium-containing extract after filtration. Prefluid;
[0018] 1.3. Add the pre-extraction solution into the extraction tank and extract with the extractant. The organic phase composition of the extractant is 2.5% N235 10% TBP 87.5% kerosene. The ratio of the extraction agent to the pre-extraction solution is O / A=1:2 , the residence time is 1 minute, so that rhenium enters the extractant, which is called rich oil, and the ...
Embodiment 2
[0024] 2.1. Add water to the flue ash produced by roasting molybdenum concentrate, the liquid-solid ratio is 4:1, the temperature is 80°C, and the time is 2.5 hours, the rhenium in the flue ash is leached, and then the solid-liquid separation is carried out, and the solid is filtered out Impurities, obtain rhenium-containing leachate;
[0025] 2.2. Neutralize the leachate and eluent with ammonium bicarbonate to PH = 5, so that the metal ions such as molybdenum, iron, copper, lead, etc. form hydroxides, separate and precipitate from rhenium, and obtain the rhenium-containing extract after filtration. Prefluid;
[0026] 2.3. Add the pre-extraction solution into the extraction tank and extract with the extractant. The organic phase composition of the extractant is 5% N235 20% TBP 75% kerosene. The ratio of the extraction agent to the pre-extraction solution is O / A=1:4 , the residence time is 4 minutes, so that rhenium enters the extractant, which is called rich oil, and the raff...
Embodiment 3
[0032] 3.1. Add water to the flue ash produced by roasting molybdenum concentrate, the liquid-solid ratio is 3:1, the temperature is 90°C, and the time is 3 hours, the rhenium in the flue ash is leached, and then the solid-liquid separation is carried out, and the solid is filtered out Impurities, obtain rhenium-containing leachate;
[0033] 3.2. Neutralize the leaching solution and eluent with ammonium bicarbonate to PH = 5, make the molybdenum, iron, copper, lead and other metal ions form hydroxides, separate and precipitate from rhenium, and obtain the rhenium-containing extract after filtration. Prefluid;
[0034] 3.3. Add the pre-extraction solution into the extraction tank and extract with the extractant. The organic phase composition of the extractant is 4% N235 16% TBP 80% kerosene. The ratio of the extraction agent to the pre-extraction solution is O / A=1:3 , the residence time is 2 minutes, so that rhenium enters the extractant, which is called rich oil, and the raff...
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