Treatment system and treatment method for reducing content of impurities in soluble manganese sulfate solution
A treatment system and technology of impurity content, applied in the field of electrode material preparation, can solve problems such as low impurity removal rate
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Embodiment 1
[0079] Manganese sulfate solution with Mn content of 50g / L, Mg content of 40g / L and Ca content of 0.5g / L was prepared, and the actual content of each ion in the manganese sulfate solution was determined by atomic absorption.
[0080] The organic phosphorus extractant is composed of P204 and sulfonated kerosene, wherein the volume content of P204 is 20%. Ammonia water and the above-mentioned organophosphorus extractant are used for saponification, and the saponification rate is 70%.
[0081] The pH of the manganese sulfate solution is adjusted to 3, and the volume ratio of the manganese sulfate solution and the organic phosphorus extractant is 1:1, and a multi-stage extraction process is carried out to obtain a manganese-rich organic phase, wherein the temperature of the extraction process is 25 ° C, and the extraction The time is 4min, and the phase separation time is 7min.
[0082] The volume ratio of the stripping agent (1mol / L sulfuric acid) to the manganese-rich organic p...
Embodiment 2
[0085] The difference with embodiment 1 is:
[0086] The pH of the soluble manganese salt solution was adjusted to 2 before carrying out the extraction process.
Embodiment 3
[0088] The difference from Example 1 is: before carrying out the extraction process, the pH of the soluble manganese salt solution was adjusted to 5.
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