METHOD FOR REGULATING PARTICLE SIZE OF PRUSSIAN WHITE
A method for regulating a particle size of Prussian white, includes (1) adding a food-grade manganese sulfate solution and a complexing agent solution into a sodium ferrocyanide solution for a precipitation reaction to generate Prussian white crystal nucleus; (2) replacing the food-grade manganese s...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A method for regulating a particle size of Prussian white, includes (1) adding a food-grade manganese sulfate solution and a complexing agent solution into a sodium ferrocyanide solution for a precipitation reaction to generate Prussian white crystal nucleus; (2) replacing the food-grade manganese sulfate solution with an industrial-grade manganese sulfate solution, and keeping other conditions unchanged, so that the Prussian white crystal nucleus grow continuously to obtain a slurry; and (3) successively subjecting the slurry to an aging reaction, solid-liquid separation, washing and drying to obtain a Prussian white product with a specific particle size. The food-grade manganese sulfate solution, and the sodium ferrocyanide solution are subjected to the precipitation reaction, and then the industrial-grade manganese sulfate solution are added to continue a precipitation reaction. The particle size of the Prussian white is regulated by controlling an adding time of the two manganese sulfate solutions |
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