METHOD OF PROCESSING OF MOLYBDENUM INTERMEDIATE PRODUCT

processing of molybdenum intermediate product. SUBSTANCE: method includes granulation of intermediate product with addition of binding agent in form of sodium silicate and additional introduction of quartz sand with weight ratio of SiO2:Mo=(0.9-2.5):1. Subsequent oxidizing roasting is carried out at...

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Bibliographische Detailangaben
Hauptverfasser:	KOZHEVNIKOV G.N, VODOP'JANOV A.G, GURIN VLADIMIR DMITRIEVICH, MATAFONOV A.A, ARANOVICH VIKTOR L'VOVICH, SITDIKOV F.G, MIRONENKO VIKTOR NIKOLAEVICH, RUDENKO BORIS IVANOVICH, KOVESHNIKOV A.V, SIGEDIN VITALIJ NIKOLAEVICH
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	processing of molybdenum intermediate product. SUBSTANCE: method includes granulation of intermediate product with addition of binding agent in form of sodium silicate and additional introduction of quartz sand with weight ratio of SiO2:Mo=(0.9-2.5):1. Subsequent oxidizing roasting is carried out at temperature of 600-650 C with simultaneous driving off of volatile metal oxides and further cooling of products of roasting to temperature of 450-550 C. Method allows reduction of total sulfur in cinder down to 0.2%, higher degree of sublimation of rhenium up to its complete recovery (98.3 %0, excluded dust carrying away, obtaining cinder with easily soluble molybdenum, simplified method technology and apparatuses. EFFECT: higher efficiency. 1 tbl, 3 ex