PROCESS FOR THE ELIMINATION OF MOLYBDENUM FROM AQUEOUS SOLUTIONS OF MANGANESE SALTS

摘要

The disclosure relates to a process for removing molybdenum from aqueous manganese(II)salt solutions by adsorbing the molybdenum on manganese dioxide and separating adsorbend and adsorbate from the purified manganese(II)salt solution. To this end, the disclosure provides for a pH value lower than 5 to be established in the manganese salt solution; for an oxidant capable of oxidizing manganese(II)compounds to manganese(IV)compounds to be added at temperatures between 50 DEG and 80 DEG C., so as to effect oxidation of a small proportion of dissolved manganese(II)salt to manganese dioxide; for resulting precipitate to be allowed to remain in contact over a period of at least 15 minutes with the manganese(II)salt solution, and for the precipitate to be separated from said solution at said temperatures.