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Application filed by Ozaporizhia Titanium And MagnefiledCriticalOzaporizhia Titanium And Magne
Priority to UA20031211435ApriorityCriticalpatent/UA69866C2/en
Publication of UA69866ApublicationCriticalpatent/UA69866A/en
Publication of UA69866C2publicationCriticalpatent/UA69866C2/en
A method for producing a high-clean germanium involves charging germanium dioxide into the reactor, reducing thereof with hydrogen, alloying, directed crystallization and zone purification at multiplepassages of melted zone through the obtained ingot. After charging germanium dioxide to the reactor it is dried in the nitrogen atmosphere, with subsequent roasting in the nitrogen atmosphere. As germanium dioxide it is used the hydrated germanium dioxide. The invention allows to increase germanium output with simultaneous reducing expenses for producing thereof.
UA20031211435A2003-12-112003-12-11A method for producing a high-clean germanium
UA69866C2
(en)
Azeotrope compositions comprising 1,2,3,3,3-pentafluoropropene and hydrogen fluoride and processes for the production and purification of 1,2,3,3,3-pentafluoropropene
High strength and high ductility steel plate having hyperfine crystal grain structure produced by subjecting ordinary low carbon steel to low strain working and annealing, and method for production thereof