Дочірне Підприємство "Завод По Виробництву Залізоокисних Пигментів'Спе
Дочернее Предприятие "Завод По Производству Железоокисных Пигментов "Спектр" Ват "Сумихимпром"
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Priority to UA98010209ApriorityCriticalpatent/UA37337A/en
Publication of UA37337ApublicationCriticalpatent/UA37337A/en
A method for producing red ferrioxide pigment by dehydration heptahydrous ferric sulfate (II), roasting by sulphur trioxide, washing, filtration, drying, milling is known. A method for producing red ferrioxide pigment comprises producing red ferrioxide pigment ferric oxide (III) with subsequent filtration, washing thereof of water-soluble salts, drying and milling, at that the method is carried out by interaction of ferric sulfate (II) with soda up to achievement of pH 6.5-7, oxidation of obtained suspension with air oxygen in heating, at that after washing of water-soluble salts roasting and after-oxidation are in addition carried out.
UA98010209A1998-01-151998-01-15method for producing red ferrioxide pigment
UA37337A
(en)