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Application filed by Володимир Олександрович Пономарьов, Григорій Іванович Гринь, Віктор Гнатович Созонтов, Микола Володимирович Кошовець, Ванадій Олексійович Носач, Олександр Олексійович Лазурко, Артем Васильович СільченкоfiledCriticalВолодимир Олександрович Пономарьов
Priority to UAU201211668UpriorityCriticalpatent/UA78687U/en
Publication of UA78687UpublicationCriticalpatent/UA78687U/en
A process for the extraction of hydrogen fluoride from off grade system by dilution method with large surplus of weak nitrate acid. Hydrogen fluoride is extracted from the system at concentration of nitrate acid from 90 to 98 % by blowing with air, coming to column.
UAU201211668U2012-10-092012-10-09Process for the extraction of hydrogen fluoride from off grade system
UA78687U
(en)
EVAPORATION GAS GENERATING DEVICE AND METHOD FOR PRODUCING EVAPORATION GAS, AND DEVICE FOR PRODUCING HYDROGEN BROMIDE AND PROCESS FOR PRODUCING HYDROGEN BROMIDE
Method for processing copper converter powder comprising carrying out oxidation and leaching process with acid of the converter powder by adding h2so4 and introducing air or steam and performing a sulfidization process to sulfur the leaching solution, and recover the copper and the arsenic