Method for extracting nickel and molybdenum from nickel-molybdenum ore acidic leaching solution
A technology of acidic leaching solution and nickel-molybdenum ore, which is applied in the field of nickel-molybdenum extraction, can solve the problems of high impurity content of precipitated molybdenum products, large alkali consumption and waste water, and inability to recover molybdenum, achieving low production cost, short process, and easy operation. easy effect
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Embodiment 1
[0020] The present embodiment proposes a method for extracting nickel and molybdenum from the acidic leach solution of nickel-molybdenum ore, comprising the following steps:
[0021] 1) At room temperature, according to the ratio of 1:50 by volume of the acidic leach solution of phosphoric acid and nickel-molybdenum ore, the phosphoric acid with a concentration of 5mol / L is added to the acidic leach solution of nickel-molybdenum ore with a concentration of 1mol / L, and stirred 3min, the molybdenum in the solution is converted into phosphomolybdenum heteropolyacid;
[0022] 2) using TBP as an extractant to extract the molybdenum phosphorus heteropoly acid to obtain an organic phase containing the molybdenum phosphorus heteropoly acid, and then back extracting with ammonia water to obtain a molybdenum-containing stripping solution, the molybdenum-containing extracting solution is Ammonium molybdate solution containing phosphorus and other impurities can be used to prepare ammoniu...
Embodiment 2
[0025] The present embodiment proposes a method for extracting nickel and molybdenum from the acidic leach solution of nickel-molybdenum ore, comprising the following steps:
[0026] 1) At room temperature, according to the ratio of phosphoric acid and the acidic leach solution of nickel-molybdenum ore at a volume ratio of 1:50, the phosphoric acid with a concentration of 3mol / L is added to the acidic leach solution of nickel-molybdenum ore with a concentration of 1mol / L, and stirred 4min, the molybdenum in the solution is converted into phosphomolybdenum heteropolyacid;
[0027] 2) using TBP as an extractant to extract the molybdenum phosphorus heteropoly acid to obtain an organic phase containing the molybdenum phosphorus heteropoly acid, and then back extracting with ammonia water to obtain a molybdenum-containing stripping solution, the molybdenum-containing extracting solution is Ammonium molybdate solution containing phosphorus and other impurities can be used to prepare...
Embodiment 3
[0030] The present embodiment proposes a method for extracting nickel and molybdenum from the acidic leach solution of nickel-molybdenum ore, comprising the following steps:
[0031] 1) At room temperature, according to the ratio of 1:20 by volume of the acidic leach solution of phosphoric acid and nickel-molybdenum ore, the phosphoric acid with a concentration of 1mol / L is added to the acidic leach solution of nickel-molybdenum ore with an acid concentration of 6mol / L, and stirred 10min, the molybdenum in the solution is converted into phosphomolybdenum heteropolyacid;
[0032] 2) using TBP as an extractant to extract the molybdenum phosphorus heteropoly acid to obtain an organic phase containing the molybdenum phosphorus heteropoly acid, and then back extracting with ammonia water to obtain a molybdenum-containing stripping solution, the molybdenum-containing extracting solution is Ammonium molybdate solution containing phosphorus and other impurities can be used to prepare ...
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