HUT77963A - Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production
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Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production
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Publication number
HUT77963A
HUT77963AHU9401883AHU9401883AHUT77963AHU T77963 AHUT77963 AHU T77963AHU 9401883 AHU9401883 AHU 9401883AHU 9401883 AHU9401883 AHU 9401883AHU T77963 AHUT77963 AHU T77963A
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Application filed by Károly Welther, Ralph Berkin, Károlyné Welther, Kálmán Kovács, Térfalvi Zsuzsa PerlakynéfiledCriticalKároly Welther
Priority to HU9401883ApriorityCriticalpatent/HUT77963A/en
Publication of HU9401883D0publicationCriticalpatent/HU9401883D0/en
Publication of HUT77963ApublicationCriticalpatent/HUT77963A/en
Sulphuric and nitric acid solutions containing small amounts of molybdenum and tungsten are reacted with phosphates in a ratio of 1:5-20 per metal, after the solution comprising 1.5-3.5 hydrogen ion/mol has been concentrated. The reaction takes place at 40-95 deg. C. The metals precipitate with ammonium and the 50-95% hetero-poly-acid is separated.
HU9401883A1994-06-221994-06-22Method and apparatus for the treatment of acidic solutions containing molybdenum and/or tungsten and originating in heating-filament production
HUT77963A
(en)