POTASSIUM IODIDE PRODUCTION METHOD

摘要

FIELD: chemistry.SUBSTANCE: invention relates to potassium iodate production technology and will find application in chemical, pharmaceutical and food industry during manufacturing of iodine-containing compounds. The method to produce potassium iodate includes continuous electrochemical oxidation of potassium iodide to potassium iodate with mass concentration of potassium iodide 55-85 kg/mand potassium iodate 70-170 kg/min presence of potassium bichromate with mass concentration of up to 2 kg/mon an oxidating ruthenium-titanium anode at anode current density of not more than 2000 A/min the solution at temperature of 60-80°C, crystallisation of potassium iodate by continuous bleeding of some electrolyte, its cooling to ambient temperature and separation of potassium iodate crystals from mother solution, and mother solution separated from crystals is strengthened by potassium iodide and returns to the electrolytic cell.EFFECT: proposal of improved technology of potassium iodate production.